Restore Shoulder Stability Research Articles

Midterm Result After Shoulder Stabilization Using the Bony Bankart Bridge Technique

Acute bony Bankart lesions (BBL) occur in up to 22% of first-time dislocations, and misdiagnosis may predispose to recurrent instability. The all-arthroscopic ‘‘Bony Bankart Bridge’’(BBB) repair technique for acute BBL restores shoulder stability in the short-term but midterm outcomes were previously lacking. The purpose of this study is to show that the BBB results in stability with high satisfaction and improved outcomes in patients that are a minimum 5 years following surgery.

Midterm Results of the Bony Bankart Bridge Technique for the Treatment of Bony Bankart Lesions

Background: The arthroscopic “bony Bankart bridge” (BBB) repair technique was recently shown to successfully restore shoulder stability at short-term follow-up, but longer-term outcomes have not yet been described. Purpose: To report the outcomes at minimum 5-year follow-up after BBB repair for anterior shoulder instability with a bony Bankart lesion. Study Design: Case series; Level of evidence, 4. Methods: Patients were included if they sustained a bony Bankart lesion, were treated with a BBB technique, and were at least 5 years postoperative. Patients were excluded if they underwent concomitant rotator cuff repair or an open bone fragment reduction. All patients were assessed with the following measures preoperatively and at final evaluation: QuickDASH (Quick Disabilities of the Arm, Shoulder and Hand), American Shoulder and Elbow Surgeons, Single Assessment Numeric Evaluation, and 12-Item Short Form Health Survey (SF-12) Physical Component Summary. Results: From 2008 to 2012, 13 patients who underwent BBB met the inclusion criteria with a mean age of 39.6 years (range, 19.1-68.8 years) and a mean follow-up of 6.7 years (range, 5.1-9.0 years). Mean time from most recent injury to surgery was 6.3 months (range, 1 day–36 months). The mean glenoid bone loss was 22.5% (range, 9.1%-38.6%). Mean SF-12 scores demonstrated significant improvement from 45.8 (SD, 9.7) preoperatively to 55.1 (SD, 5.9) at a mean follow-up of 6.7 years. At final follow-up, the mean American Shoulder and Elbow Surgeons score was 93.1 (range, 68.3-100); the mean QuickDASH score, 6.2 (range, 0-25); and the mean Single Assessment Numeric Evaluation score, 92.8 (range, 69-99). None of the patients progressed to further shoulder surgery. Three of 13 patients (23%) reported subjective recurrent instability. At final follow-up, 9 of 12 (75%) patients indicated that their sports participation levels were equal to their preinjury levels. Median patient satisfaction at final follow-up was 10 of 10 points (range, 3-10). Conclusion: The arthroscopic BBB technique for patients with anterior bony Bankart lesions can restore shoulder stability, yield durable improvements in clinical outcomes, and provide a high return-to-sport rate at a minimum 5-year follow-up. Three of 13 patients experienced postoperative symptoms of instability but did not undergo further stabilization surgery.

Arthroscopic Superior Capsule Reconstruction Can Eliminate Pseudoparalysis in Patients With Irreparable Rotator Cuff Tears

Background: Patients with pseudoparalysis and irreparable rotator cuff tears have very poor function. The authors developed a superior capsule reconstruction (SCR) technique for irreparable rotator cuff tears that restores shoulder stability and muscle balance, improving shoulder function and relieving pain. Purpose: To evaluate whether arthroscopic SCR reversed preoperative pseudoparalysis in patients with irreparable rotator cuff tears. Study Design: Case series; Level of evidence, 4. Methods: One hundred consecutive patients with irreparable rotator cuff tears underwent arthroscopic SCR with fascia lata autografts; 7 patients with deltoid weakness from cervical or axillary nerve palsy and 5 with severe presurgical shoulder stiffness were excluded. The remaining 88 were allocated to 3 groups according to their preoperative active shoulder elevation: no pseudoparalysis (45 patients; mean age, 66.2 years; mean tear size, 3.5 cm), moderate pseudoparalysis (28 patients, 68.3 years, 3.5 cm), and severe pseudoparalysis (15 patients, 62.3 years, 4.9 cm). Clinical outcome, active shoulder range of motion, acromiohumeral distance, and healing rate were compared between patients with and without pseudoparalysis, as well as before surgery and at final follow-up (35-110 months). Results: American Shoulder and Elbow Surgeons score, active elevation, active external rotation, and acromiohumeral distance increased significantly after arthroscopic SCR among all patients. Graft healing rates did not differ among the groups (P = .73): 98% (44 of 45) for no pseudoparalysis, 96% (27 of 28) for moderate pseudoparalysis, and 87% (13 of 15) for severe pseudoparalysis. Pseudoparalysis was reversed in 96% (27 of 28) of patients with preoperative moderate pseudoparalysis and 93% (14 of 15) with preoperative severe pseudoparalysis. Both patients with residual pseudoparalysis postoperatively (1 of 28 with preoperative moderate pseudoparalysis, 1 of 15 with preoperative severe pseudoparalysis) had graft tears. Conclusion: Arthroscopic SCR restored superior glenohumeral stability and improved shoulder function among patients with or without pseudoparalysis who had previously irreparable rotator cuff tears. In the absence of postoperative graft tear, arthroscopic SCR reversed preoperative pseudoparalysis. Graft healing rates after arthroscopic SCR did not differ between patients with and without pseudoparalysis.

Differences in Coracoid and Glenoid Dimensions Based on Sex, Race, and Age: Implications for Use of the Latarjet Technique in Glenoid Reconstruction.

The Latarjet procedure restores shoulder stability through reconstruction of the glenoid arc. Prior investigations of glenoid and coracoid dimensions have been underpowered to detect differences based on sex and race. We sought to establish normative values for glenoid width and coracoid dimensions based on sex, race, and age. In addition, we assessed the restoration of glenoid dimensions using the classic and modified Latarjet techniques (classic technique: placing lateral surface of the coracoid to the glenoid; modified technique: placing inferior surface of the coracoid to the glenoid). A total of 993 cadaveric specimens (n = 1986 scapulae) from people over 18 years of age at the time of death were analyzed. Measurements of maximal glenoid width, coracoid width, thickness, and length were recorded. Statistical analysis was performed to detect differences based on sex and race, while univariable linear regression was used to determine the association of increasing age on measured dimensions. All dimensions of specimens were significantly larger in males than in females. Caucasians possessed larger mean glenoid width, coracoid width, and coracoid length, while coracoid thickness was significantly larger in African Americans. Linear regression analysis found that increasing age was associated with increased glenoid width and coracoid dimensions. Coracoid positioning restored glenoid width in defects measuring 20% of glenoid width using both classic and modified Latarjet techniques, while defects measuring up to 25% were more accurately reproduced using the modified technique. Dimensions were significantly larger in males and in Caucasians, aside from coracoid thickness. Mean dimensions increased with advancing age. Coracoid positioning using classic or modified Latarjet techniques restored glenoid width defects measuring 20% of the glenoid width, while the modified technique allowed for restoration of larger defects.

An arthroscopic bone block procedure is effective in restoring stability, allowing return to sports in cases of glenohumeral instability with glenoid bone deficiency.

A group of patients affected by bone loss in the context of recurrent anterior shoulder instability were treated arthroscopically with a modified Eden-Hybinette technique since 2005. The last modification was made in 2013, consisting of fixation using a pair of specifically designed double round Endobuttons, which secure the bone graft to the glenoid rim placed through a guide. This report describes patients operated on after this last modification. No reports have described the results of this technique, and the purpose of this study was to assess early clinical and radiological results of an arthroscopic bone block procedure with double round Endobutton fixation. We hypothesized that this technique would restore shoulder stability in patients with anteroinferior glenohumeral instability with glenoid bone deficit, with excellent clinical and radiological results. The clinical and radiological efficacy of this procedure was retrospectively evaluated in 26 patients with an average follow-up of 29.6months (range 24-33months). At minimum 2-year follow-up, we had no recurrent anterior dislocations, excellent clinical results [average Walch-Duplay score 93.2, (SD 7.8); average Rowe score, 96.4 (SD 6.5); average SSV, 87.4 (SD 12.1); satisfaction rate, 88.5%; average loss of external rotation, 4.4° (SD 8.7°)] optimal graft positioning, and a healing rate of 92.3% on computed tomography scan. Arthroscopic bone block grafting combined with a standard Bankart repair restored shoulder stability in patients with anteroinferior glenohumeral instability with glenoid bone deficit, with excellent clinical and radiological results. This procedure did not substantially limit external rotation, allowing a high rate of return to sports even among competitive, overhead, and "at risk" athletes.

Return to Sports and Physical Work After Arthroscopic Superior Capsule Reconstruction Among Patients With Irreparable Rotator Cuff Tears

Background: Although sports participation and heavy physical work can contribute to rotator cuff tears, many patients expect to return to these activities after surgery; however, irreparable rotator cuff tears can preclude this outcome. A new surgical treatment—arthroscopic superior capsule reconstruction (SCR)—restores shoulder stability and muscle balance in patients with irreparable rotator cuff tears; consequently, it improves shoulder function and relieves pain. Purpose: To evaluate the rates of return to sports and physical work among patients treated with arthroscopic SCR. Study Design: Cohort study; Level of evidence, 3. Methods: From 2007 to 2014, we performed arthroscopic SCR in 105 patients with irreparable rotator cuff tears, 5 of whom were lost to follow-up. Consequently, 100 patients (mean age, 66.9 years; range, 43-82 years) were enrolled in the study. Before surgery, 26 patients had participated in sports (2 competitive, 24 recreational), and 34 patients had physical work. Rates of return to sports and physical work, the American Shoulder and Elbow Surgeons (ASES) score, active shoulder range of motion, and rate of graft tear were evaluated. The mean time to final follow-up was 48 months (range, 24-88 months). Results: All 26 patients who played sports before their injuries returned fully to them. In addition, 32 patients returned fully to their previous physical work, whereas the 2 remaining patients returned with reduced hours and workloads. As compared with the nonsports group, the sports group had significantly higher postoperative active elevation (160° ± 32° vs 146° ± 39°; P = .04) and higher postoperative ASES scores (97 ± 7 vs 91 ± 12; P = .02). The shoulder range of motion and ASES scores before and after surgery did not differ significantly between the physical and nonphysical work groups (P = .11-.99). The rate of graft tear did not differ between the sports group (4%) and nonsports group (5%) (P = .75) and between the physical work group (6%) and nonphysical work group (5%) (P = .77). Conclusion: Arthroscopic SCR restored shoulder function and resulted in high rates of return to recreational sports and physical work.

Superior Capsule Reconstruction for Reinforcement Before Arthroscopic Rotator Cuff Repair Improves Cuff Integrity

Objectives:We developed the superior capsule reconstruction (SCR) technique for surgical treatment of irreparable rotator cuff tears. In these patients, SCR restores shoulder stability and muscle balance, consequently improving shoulder function and relieving pain. In this study, we evaluated whether SCR for reinforcement before arthroscopic rotator cuff repair (ARCR) improves cuff integrity, especially in the case of severely degenerated supraspinatus tendon.Methods:A series of 32 consecutive patients (mean age, 69.0 years) with severely degenerated but reparable rotator cuff tears (medium size: 1-3 cm, and large size: 3-5 cm) underwent SCR using fascia lata autografts for reinforcement before ARCR. To determine the indications for SCR for reinforcement, the severity of degeneration in the torn supraspinatus tendon was assessed. We evaluated fatty degeneration in the muscle by using the Goutallier grade; we also scored retraction of the torn tendon (grade 0: no retraction; grade 1: torn edge on the greater tuberosity; grade 2: torn edge on the lateral half of the humeral head; grade 3: torn edge on the medial half of the humeral head; grade 4: torn edge on the glenoid) and tendon quality (grade 0: normal; grade 1: slightly thin, or slight fatty degeneration in the tendon part; grade 2: severely thin, or severe fatty degeneration in the tendon part; grade 3: severely thin, and severe fatty degeneration in the tendon part; grade 4: no tendon). In patients classified with grade 3 or 4 in at least two of these three categories, arthroscopic SCR was performed for reinforcement, after which the torn tendon was repaired over the fascia lata graft. To assess the benefit of SCR for reinforcement, the results from these 32 patients were compared with those after ARCR alone in 91 consecutive patients with medium (1-3 cm) to large (3-5 cm) rotator cuff tears (mean age, 66.7 years). Torn tendons were repaired by using double-row suture-bridges with and without SCR for reinforcement. By using t- and chi-square tests, we compared the American Shoulder and Elbow Surgeons (ASES) score, active shoulder range of motion (ROM), and cuff integrity (Sugaya MRI classification) between ARCR with and without SCR as well as between before surgery and at final follow-up (mean, 19 months; 12 to 40 months). A significant difference was defined as P < 0.05.Results:All 32 patients who underwent SCR before ARCR had no postoperative re-tear and demonstrated type I cuff integrity (sufficient thickness with homogeneously low intensity), whereas those treated with ARCR without SCR had a 5.5% incidence (5/91 all patients) of postoperative re-tear, and 22.1% (19/86 healed patients) had type II (partial high-intensity area) or III (insufficient thickness) cuff integrity. ASES score, active elevation, active external rotation, and active internal rotation increased significantly after ARCR both with and without SCR (P < 0.001) (Table). Postoperative ASES score and active ROM did not differ significantly between ARCR with and without SCR, but the Goutallier grade of the supraspinatus was significantly higher for ARCR with SCR (mean, 2.8) than for ARCR alone (mean, 2.1) (P < 0.0001).Conclusion:SCR for reinforcement prevented postoperative re-tear after ARCR and improved the quality of the repaired tendon on MRI. Furthermore, postoperative functional outcomes were similar in patients who underwent ARCR alone and those who also underwent SCR, even though degeneration of the torn tendons was greater in the latter group.TableASES score (points)ASES score (points)Active elevation (degrees)Active elevation (degrees)External rotation (degrees)External rotation (degrees)Internal rotationInternal rotationBeforeAfterBeforeAfterBeforeAfterBeforeAfterARCR with SCR (n=32)45.188.21331613849L4L1ARCR alone (n=91)34.490.61331695258L2T11

Arthroscopic Superior Capsule Reconstruction Eliminates Pseudoparalysis In Patients with Irreparable Rotator Cuff Tears

Arthroscopic SCR improved shoulder function and achieved superior stability in patients with previously irreparable rotator cuff tears both with and without pseudoparalysis. We have developed the superior capsule reconstruction (SCR) technique for surgical treatment of irreparable rotator cuff tears. In these patients, SCR restores shoulder stability and muscle balance, consequently improving shoulder function—particularly deltoid muscle function—and relieving pain. In this study, we evaluated whether arthroscopic SCR reversed preoperative pseudoparalysis in patients with irreparable rotator cuff tears. A series of 100 consecutive patients with irreparable rotator cuff tears that had failed conservative treatment underwent arthroscopic SCR using fascia lata autografts; 7 patients with deltoid weakness due to cervical or axillary nerve palsy and 3 patients with severe shoulder stiffness (passive shoulder elevation, less than 90°) before surgery were excluded from the study population. The remaining 90 patients were allocated into 3 groups according to their preoperative active shoulder elevation: (1) no pseudoparalysis: more than 90° of active shoulder elevation (48 patients; mean age, 66.3 years; mean tear size in anterioposterior direction, 3.5 cm); (2) moderate pseudoparalysis: no shoulder stiffness, less than 90° of active shoulder elevation, patients maintained more than 90° elevation once the shoulder was elevated passively (27 patients; mean age, 68.1 years, mean tear size, 3.5 cm); and (3) severe pseudoparalysis: no shoulder stiffness, less than 90° of active shoulder elevation, patients had a positive drop-arm sign (15 patients; mean age, 62.3 years, mean tear size, 4.9 cm). Physical examination, radiography, and magnetic resonance imaging were performed before surgery; at 3, 6, and 12 months after surgery; and yearly thereafter. The American Shoulder and Elbow Surgeons (ASES) score, active shoulder range of motion, acromiohumeral distance, and healing rate were compared between patients with and without pseudoparalysis as well as between before surgery and at the final follow-up (mean, 48 months; range, 24 to 88 months) by using the t and chi-square tests. A significant difference was defined as P < 0.05. ASES score, active elevation, active external rotation, and acromiohumeral distance increased significantly after arthroscopic SCR in patients with no pseudoparalysis, moderate pseudoparalysis, or severe pseudoparalysis. The graft healing rate was 96% (43 of 45) in patients with no pseudoparalysis, 96% (26 of 27) in those with moderate pseudoparalysis, and 87% (13 of 15) in the severe pseudoparalysis group. Postoperative ASES score, active elevation, active external rotation, acromiohumeral distance, and healing rate did not differ among the 3 patient groups. Pseudoparalysis was reversed in 96% (26 of 27) of patients with moderate pseudoparalysis and in 93% (14 of 15) patients with severe pseudoparalysis. Patients with residual moderate or severe pseudoparalysis had graft tears postoperatively. Arthroscopic SCR improved shoulder function and achieved superior stability in patients with previously irreparable rotator cuff tears both with and without pseudoparalysis. Providing that the graft did not tear postoperatively, arthroscopic SCR reversed preoperative pseudoparalysis. The graft healing rate after arthroscopic SCR did not differ between patients with and without pseudoparalysis.

Long-term efficacy of modified Bristow-Latarjet procedure in treatment of recurrent inferoanterior shoulder dislocation

Objective To investigate the long-term effects of modified Bristow-Latarjet operation for treatment of recurrent inferoanterior shoulder dislocation. Methods A retrospective case series study was done on 90 patients with recurrent inferoanterior shoulder dislocation treated by modified Bristow-Latarjet procedure from January 2001 to January 2016. There were 72 males and 18 females, with an average age of 36.8 years. There were 59 right shouders and 31 left shoulders, with dislocation for 4-32 times (mean, 13 times). Shoulder instability severity index score (ISIS) was 3-10 points (mean, 6.4 points). The duration of disease was 6-26 months (mean, 13 months). The operation methods were coracoid lateral incision with modification, rotator cuff interval approach, double hollow compression screw fixation, and bone congruent-arc technique in standing position. Clinical evaluation was done on postoperative recurrence of shoulder joint dislocation/subluxation, bone healing evaluated by X-ray and CT, Rowe score, simple shoulder function Test (SST) score, shoulder osteoarthritis score (Samilson-Prieto), body side shoulder external rotation angle and the subscapularis muscle strength. Results All patients were followed up for1-15 years (mean, 5.6 years). The rate of redislocation or subluxation during follow-up was zero. All transpositions of the coracoid got bone healing at postoperative 3-6 months. The Rowe score was increased significantly from (45.6±9.4)points preoperatively to (92.6±3.5)points postoperatively (P 0.05). With regards to subscapularis strength, the lift-off and belly-press in injured side were (4.9±0.9)kg and (4.4±1.0)kg, respectively (P>0.05). Lift-off and belly-off in normal side were (5.1±0.5)kg and (4.7±1.1)kg, respectively (P>0.05). Conclusion The modified Bristow-Latarjet operation is a reproducible and effective technique that can restore shoulder stability, with advantages of sound bone healing, free shoulder external rotation, low incidence of shoulder joint osteoarthritis, remaining of myodynamia under scapula and hence has long-term effects and is worth of clinical applicaiton. Key words: Shoulder joint; Shoulder dislocation; Bristow procedure

Return to Sports and Work after Arthroscopic Superior Capsule Reconstruction in Patients with Irreparable Rotator Cuff Tears

Objectives:Sports and work can be a causative factor in rotator cuff tears, so that these active patients expect to return to sports and work after surgery. However, in case of irreparable rotator cuff tears, it’s not easy to return to sports and work. A new surgical treatment for irreparable rotator cuff tears, arthroscopic superior capsule reconstruction, restores shoulder stability and muscle balance in patients with irreparable rotator cuff tears; consequently, it improves shoulder function—specifically deltoid muscle function—and relieves pain. In this study, we evaluated the rate of return to sports and work in patients treated with arthroscopic superior capsule reconstruction.Methods:From 2007 to 2014, we performed arthroscopic superior capsule reconstruction on 102 shoulders in 100 patients (mean age 66.7 years; range, 43 to 82) with irreparable rotator cuff tears that had failed conservative treatment. Twenty-six patients played sports before surgery (6 golf, 4 table tennis, 4 swimming, 3 martial arts, 2 baseball, 2 yoga, 1 tennis, 1 badminton, 1 skiing, 1 mountain-climbing, and 1 ground golf). Thirty-four patients had been employed before surgery (21 manual workers, 10 farmers, 1 butcher, 1 cook, and 1 athletic trainer). Also physical examination, radiography, and magnetic resonance imaging were performed before surgery; at 3, 6, and 12 months after surgery; and yearly thereafter. The return-to-sports and work rate and healing rate were analyzed. The American Shoulder and Elbow Surgeons (ASES) score, and active shoulder range of motion were compared between before surgery and at the final follow-up (mean, 48 months; range, 24 to 88 months) by using the t and chi-square tests. A significant difference was defined as P < 0.05.Results:All 26 patients who had played sport before their injuries returned fully to their previous sports, although most of the patients had been playing at recreational level before their injuries. Thirty-two patients returned fully to their previous jobs, whereas two patients (1 farmer and 1 manual worker) returned with reduced hours and workloads. Ninety-five of 102 shoulders (93.1%) had no graft tear or no re-tear of the repaired rotator cuff tendon during the follow-up period. Three shoulders (2.9%) with severe fatty degeneration of the infraspinatus tendon had re-tear of the repaired infraspinatus tendon at 3 months after surgery. Four shoulders (3.9%) suffered a postoperative graft tear by 3 months (2 patients) or 1 year (2 patients) after surgery. The average preoperative American Shoulder and Elbow Surgeons (ASES) score was 31.6 points (range, 3.3 to 63.3 points). Average clinical outcome scores after arthroscopic superior capsule reconstruction all improved significantly at final follow-up (ASES, 93.3 points) (P < .00001). The shoulder active range of motion improved significantly after arthroscopic superior capsule reconstruction at the final follow-up: by 56.9° (92.4° to 149.3°) for elevation (P < .001), by 15.7° (26.0° to 41.6°) for external rotation (P < .01), and by three vertebral bodies (L4 to L1) for internal rotation (P < .01).Conclusion:Arthroscopic superior capsule reconstruction restored shoulder function and resulted in high rates of return to recreational sport and work. These results suggest that arthroscopic superior capsule reconstruction is a viable surgical option for irreparable rotator cuff tears, especially in patients who work and enjoy sport.

Arthroscopic Superior Capsule Reconstruction Eliminates Pseudoparalysis in Patients with Irreparable Rotator Cuff Tears

Objectives:We have developed the superior capsule reconstruction (SCR) technique for surgical treatment of irreparable rotator cuff tears. In these patients, SCR restores shoulder stability and muscle balance, consequently improving shoulder function—particularly deltoid muscle function—and relieving pain. In this study, we evaluated whether arthroscopic SCR reversed preoperative pseudoparalysis in patients with irreparable rotator cuff tears.Methods:A series of 100 consecutive patients with irreparable rotator cuff tears that had failed conservative treatment underwent arthroscopic SCR using fascia lata autografts; 7 patients with deltoid weakness due to cervical or axillary nerve palsy and 3 patients with severe shoulder stiffness (passive shoulder elevation, less than 90°) before surgery were excluded from the study population. The remaining 90 patients were allocated into 3 groups according to their preoperative active shoulder elevation: (1) no pseudoparalysis: more than 90° of active shoulder elevation (48 patients; mean age, 66.3 years; mean tear size in anterioposterior direction, 3.5 cm); (2) moderate pseudoparalysis: no shoulder stiffness, less than 90° of active shoulder elevation, patients maintained more than 90° elevation once the shoulder was elevated passively (27 patients; mean age, 68.1 years, mean tear size, 3.5 cm); and (3) severe pseudoparalysis: no shoulder stiffness, less than 90° of active shoulder elevation, patients had a positive drop-arm sign (15 patients; mean age, 62.3 years, mean tear size, 4.9 cm). Physical examination, radiography, and magnetic resonance imaging were performed before surgery; at 3, 6, and 12 months after surgery; and yearly thereafter. The American Shoulder and Elbow Surgeons (ASES) score, active shoulder range of motion, acromiohumeral distance, and healing rate were compared between patients with and without pseudoparalysis as well as between before surgery and at the final follow-up (mean, 48 months; range, 24 to 88 months) by using the t and chi-square tests. A significant difference was defined as P < 0.05.Results:ASES score, active elevation, active external rotation, and acromiohumeral distance increased significantly after arthroscopic SCR in patients with no pseudoparalysis, moderate pseudoparalysis, or severe pseudoparalysis. The graft healing rate was 96% (43 of 45) in patients with no pseudoparalysis, 96% (26 of 27) in those with moderate pseudoparalysis, and 87% (13 of 15) in the severe pseudoparalysis group. Postoperative ASES score, active elevation, active external rotation, acromiohumeral distance, and healing rate did not differ among the 3 patient groups. Pseudoparalysis was reversed in 96% (26 of 27) of patients with moderate pseudoparalysis and in 93% (14 of 15) patients with severe pseudoparalysis. Patients with residual moderate or severe pseudoparalysis had graft tears postoperatively.Conclusion:Arthroscopic SCR improved shoulder function and achieved superior stability in patients with previously irreparable rotator cuff tears both with and without pseudoparalysis. Providing that the graft did not tear postoperatively, arthroscopic SCR reversed preoperative pseudoparalysis. The graft healing rate after arthroscopic SCR did not differ between patients with and without pseudoparalysis.

The effect of the arthroscopic augmentation of the subscapularis tendon on shoulder instability and range of motion: A biomechanical study

BackgroundAnterior shoulder dislocation is common. The treatment of recurrence with glenoid bone defect is still considered controversial. A new arthroscopic subscapularis augmentation has recently been described that functions to decrease the anterior translation of the humeral head. The purpose of the presented study was to examine the biomechanical effect on glenohumeral joint motion and stability. MethodsEight fresh frozen cadaver shoulders were studied by use of a force guided industrial robot fitted with a six-component force-moment sensor to which the humerus was attached. The testing protocol includes measurement of glenohumeral translation in the anterior, anterior-inferior and inferior directions at 0°, 30° and 60° of glenohumeral abduction, respectively, with a passive humerus load of 30N in the testing direction. The maximum possible external rotation was measured at each abduction angle applying a moment of 1Nm. Each specimen was measured in a physiologic state, as well as after Bankart lesion with an anterior bone defect of 15–20% of the glenoid, after arthroscopic subscapularis augmentation and after Bankart repair. FindingsThe arthroscopic subscapularis augmentation decreased the anterior and anterior-inferior translation. The Bankart repair did not restore the mechanical stability compared to the physiologic shoulder group. External rotation was decreased after arthroscopic subscapularis augmentation compared to the physiologic state, however, the limitation of external rotation was decreased at 60° abduction. InterpretationThe arthroscopic subscapularis augmentation investigated herein was observed to restore shoulder stability in an experimental model.

Arthroscopic Superior Capsule Reconstruction for Irreparable Rotator Cuff Tears

Objectives:An arthroscopic superior capsule reconstruction, in which the fascia lata autograft attached medially to the superior glenoid and laterally to the greater tuberosity, restores shoulder stability and muscle balance in patients with irreparable rotator cuff tears; consequently, it improves shoulder function specifically deltoid muscle function and relieves pain. We assessed the clinical outcome of arthroscopic superior capsule reconstruction (Figure 1) in 100 consecutive patients with irreparable rotator cuff tears. Specifically, we focused on the rates of return to sport and work.Methods:From 2007 to 2014, we performed arthroscopic superior capsule reconstruction on 107 consecutive patients (mean 66.7 years; range, 43 to 82) with irreparable rotator cuff tears that had failed conservative treatment. Seven patients were lost to follow-up because of other medical problems or reasons. In the remaining 100 patients there were 56 supraspinatus and infraspinatus tears; 39 supraspinatus, infraspinatus, and subscapularis tears; 3 supraspinatus, infraspinatus, teres minor, and subscapularis tears; and 2 supraspinatus, infraspinatus, and teres minor tears. Physical examination, radiography, and MRI were performed before surgery; at 3, 6, and 12 months after surgery; and yearly thereafter. Rates of return to sport and work were also investigated in those patients who had been employed (34 patients: 21 manual workers, 10 farmers, 1 butcher, 1 cook, and 1 athletic trainer) or played sport (26 patients: 6 golf, 4 table tennis, 4 swimming, 3 martial arts, 2 baseball, 2 yoga, 1 tennis, 1 badminton, 1 skiing, 1 mountain-climbing, and 1 ground golf) before injury.Results:The average preoperative American Shoulder and Elbow Surgeons (ASES) score was 31.6 points (range, 3.3 to 63.3 points) and the average Japanese Orthopaedic Association (JOA) score was 51.6 points (26.5 to 68.5 points). Average postoperative clinical outcome scores all improved significantly at final follow-up (mean, 36.6 months after surgery; range, 12 to 96 months; ASES, 93.3 points; JOA, 92.2 points) (P < .00001). Ninety-two patients (92%) had neither graft tear nor re-tear of the repaired rotator cuff tendon during the follow-up period (5 to 8 years of follow-up, 17 patients; 3 to 4 years of follow-up, 19 patients; 1 to 2 years of follow-up, 56 patients). Postoperative clinical outcome scores and active elevation at final follow-up were significantly better in healed patients (ASES, 95.5 points; JOA, 93.7 points, 154.8° ± 24.2°) than in unhealed patients suffering from graft tear or re-tear of the repaired rotator cuff tendon (ASES, 76.3 points, P < 0.0001; JOA, 79.5, P < 0.001; 115.0° ± 41.8°, P < 0.001). Thirty-two patients returned fully to their previous jobs, whereas two patients returned with reduced hours and workloads. All 26 patients who had played sport before their injuries returned fully to their previous sports, although most of the patients had been playing at recreational level before their injuries.Conclusion:Arthroscopic superior capsule reconstruction restored shoulder function and resulted in high rates of return to recreational sport and work. Graft tear or re-tear of the repaired rotator cuff tendon exacerbated the clinical outcome after superior capsule reconstruction. These results suggest that arthroscopic superior capsule reconstruction is a viable surgical option for irreparable rotator cuff tears, especially in patients who work and enjoy sport.

Biomechanical Effect of Thickness and Tension of Fascia Lata Graft on Glenohumeral Stability for Superior Capsule Reconstruction in Irreparable Supraspinatus Tears

To investigate the effects of graft length and thickness on shoulder biomechanics after superior capsule reconstruction. Subacromial peak contact pressure and glenohumeral superior translation were measured at 0°, 30°, and 60° of glenohumeral abduction in 8 fresh-frozen cadaveric shoulders under 5 conditions: (1) intact shoulder; (2) irreparable supraspinatus tendon tear, (3) superior capsule reconstruction with a fascia lata allograft 4-mm thick and 15 mm longer than the distance from the superior glenoid to the lateral edge of the greater tuberosity, as determined during placement at 30° of glenohumeral abduction; (4) superior capsule reconstruction with a fascia lata allograft 8-mm thick and with the same 15 mm relative length determined at 10° of glenohumeral abduction, and (5) superior capsule reconstruction with a fascia lata allograft 8-mm thick and with the 15-mm relative length determined at 30° of glenohumeral abduction. To investigate the effect of graft thickness, we compared the data from conditions 1, 2, 3, and 5. To assess the effect of graft length, we compared conditions 1, 2, 4, and5. With superior capsule reconstruction using a 4-mm graft, subacromial peak contact pressure (but not superior translation) was significantly lower than with irreparable supraspinatus tears (at 0° abduction: 259% decrease; P= .0002; at 30° abduction: 113% decrease; P= .01). The superior capsule reconstruction using an 8-mm graft significantly decreased both subacromial peak contact pressure (at 0° abduction: 246% decrease, P= .0002; at 30° abduction: 158% decrease; P= .0008; at 60° abduction: 57% decrease; P= .04) and superior translation (at 0° abduction: 135% decrease; P= .02; at 30° abduction; 130% decrease; P= .004). Graft length with placement at 10° glenohumeral abduction was 5 mm greater than that at 30° abduction. The 8-mm superior capsule reconstruction performed at 10° or 30° of glenohumeral abduction significantly decreased subacromial peak contact pressure (placement at 10° and 30°: 0° abduction, P= .0002 and .0002, respectively; 30° abduction, P= .0004 and .0005, respectively; 60° abduction, P= .04 and .04, respectively) and superior translation (placement at 10° and 30°; 0° abduction, P=.04 and .02, respectively; 30° abduction, P= .02 and .004, respectively) compared with irreparable supraspinatus tears. Superior capsule reconstruction normalized the superior stability of the shoulder joint when the graft was attached at 10° or 30° of glenohumeral abduction. An 8-mm-thick graft of fascia lata had greater stability than did a 4-mm-thick graft. Grafts 8-mm thick and attached at 15° to 45° of shoulder abduction (equal to 10° to 30° of glenohumeral abduction) biomechanically restore shoulder stability during superior capsule reconstruction using fascia lata.

Arthroscopic Bristow-Latarjet combined with bankart repair restores shoulder stability in patients with glenoid bone loss.

BackgroundArthroscopic Bankart repair alone cannot restore shoulder stability in patients with glenoid bone loss involving more than 20% of the glenoid surface. Coracoid transposition to prevent recurrent shoulder dislocation according to Bristow-Latarjet is an efficient but controversial procedure.Questions/purposesWe determined whether an arthroscopic Bristow-Latarjet procedure with concomitant Bankart repair (1) restored shoulder stability in this selected subgroup of patients, (2) without decreasing mobility, and (3) allowed patients to return to sports at preinjury level. We also evaluated (4) bone block positioning, healing, and arthritis and (5) risk factors for nonunion and coracoid screw pullout.MethodsBetween July 2007 and August 2010, 79 patients with recurrent anterior instability and bone loss of more than 20% of the glenoid underwent arthroscopic Bristow-Latarjet-Bankart repair; nine patients (11%) were either lost before 2-year followup or had incomplete data, leaving 70 patients available at a mean of 35 months. Postoperative radiographs and CT scans were evaluated for bone block positioning, healing, and arthritis. Any postoperative dislocation or any subjective complaint of occasional to frequent subluxation was considered a failure. Physical examination included ROM in both shoulders to enable comparison and instability signs (apprehension and relocation tests). Rowe and Walch-Duplay scores were obtained at each review. Patients were asked whether they were able to return to sports at the same level and practice forced overhead sports. Potential risk factors for nonhealing were assessed.ResultsAt latest followup, 69 of 70 (98%) patients had a stable shoulder, external rotation with arm at the side was 9° less than the nonoperated side, and 58 (83%) returned to sports at preinjury level. On latest radiographs, 64 (91%) had no osteoarthritis, and bone block positioning was accurate, with 63 (90%) being below the equator and 65 (93%) flush to the glenoid surface. The coracoid graft healed in 51 (73%), it failed to unite in 14 (20%), and graft osteolysis was seen in five (7%). Bone block nonunion/migration did not compromise shoulder stability but was associated with persistent apprehension and less return to sports. Use of screws that were too short or overangulated, smoking, and age higher than 35 years were risk factors for nonunion.ConclusionsThe arthroscopic Bristow-Latarjet procedure combined with Bankart repair for anterior instability with severe glenoid bone loss restored shoulder stability, maintained ROM, allowed return to sports at preinjury level, and had a low likelihood of arthritis. Adequate healing of the transferred coracoid process to the glenoid neck is an important factor for avoiding persistent anterior apprehension.Level of EvidenceLevel IV, therapeutic study. See Instructions for Authors for a complete description of levels of evidence.

Shoulder instability in the setting of bipolar (glenoid and humeral head) bone loss: the glenoid track concept.

An assortment of variables has been used in predicting anterior shoulder instability resulting from pathologic engagement of Hill-Sachs lesions on the glenoid. The glenoid track is a unique biomechanical model that relates both Hill-Sachs and bony Bankart lesions to predict shoulder engagement. We examined the glenoid track concept to determine if it provides a model that unifies glenoid rim and humeral head bone loss in predicting engagement. In this review we addressed two questions: (1) How are humeral head and glenoid rim bony defects and their interactions quantified? (2) Why is the concept of the glenoid track important? We performed a systematic review of the literature using PubMed (MEDLINE) and OVID for biomechanical studies and peer-reviewed articles published until March 2013. Twenty-four studies fit the inclusion criteria. These were subdivided into four anatomic studies, four studies quantifying glenohumeral bone loss, nine studies biomechanically defining shoulder engagement, six studies analyzing current treatment models, and one clinical study to be included in the final review. Data demonstrate pathologic engagement is dependent on the medial margin of the Hill-Sachs lesion traveling outside the glenoid track. The width of the glenoid track decreases accordingly if there is a glenoid defect, making engagement more likely. Most treatment models focus on widening the glenoid track before addressing Hill-Sachs lesions. The glenoid track uses both glenoid and humeral head bone loss to predict subsequent risk of humeral head engagement and possible dislocation. The glenoid track shows us that restoring the track to its natural width should be among the surgeon's first priority in restoring shoulder stability. Humeral head lesions, also known as Hill-Sachs lesions, are surgically addressed when they cause clinical symptoms. Symptoms arise when the medial margin of the defect engages the glenoid track.

What Went Wrong and What Was Done About It: Pitfalls in the Treatment of Common Shoulder Surgery

When performing revision shoulder surgery, it is important that the surgeon understands why the index procedure failed and has a clear plan to address problems in the revision procedure. The most common cause of failure after anterior instability shoulder surgery is a failure to treat the underlying glenoid bone loss. For most defects, a Latarjet transfer can effectively restore anterior glenoid bone stock and restore shoulder stability. Persistent anterior shoulder pain after rotator cuff surgery may be the result of missed biceps pathology. This can be effectively treated via a biceps tenodesis. The most difficult failures to treat after acromioclavicular joint reconstruction surgery are those involving fractures of either the coracoid or the clavicle. Clavicle hook plates can be used as supplemental fixation during the treatment of these fractures to help offload the fracture site and allow healing while restoring stability to the acromioclavicular articulation. A failed hemiarthroplasty for a proximal humeral fracture frequently results when the tuberosities fail to heal correctly. This complication can be avoided by paying close attention to the implant position and the tuberosity fixation. If hemiarthroplasty is unsuccessful, the patient is best treated with conversion to a reverse shoulder arthroplasty.

Rotator Cuff Tear and Glenohumeral Instability

The rotator cuff plays a significant role in the static and dynamic stability of the glenohumeral joint. Rotator cuff tears may occur after shoulder dislocations, whether in younger athletes or older patients with age-related tendon degeneration. Untreated tears may cause persistent pain, dysfunction, instability, and degenerative changes. A thorough understanding of when to look for rotator cuff tears after shoulder dislocations and how best to manage them may decrease patients' pain and improve function. We systematically reviewed the available literature to better understand (1) when a rotator cuff tear should be suspected after a dislocation, (2) whether surgical or nonsurgical approaches result in better scores for pain and satisfaction in patients with rotator cuff tears resulting from shoulder dislocations, and (3) whether intraarticular lesions, rotator cuff tears, or both should be addressed when surgery is performed. We systematically searched MEDLINE(®), CINAHL, and EMBASE for studies published from 1950 to 2012. We included studies reporting outcomes after treatment in patients with rotator cuff tears and shoulder dislocations. We excluded case reports, studies without any treatment, and studies about patients treated with arthroplasty. Five Level III and six Level IV studies were ultimately selected for review. Patients with persistent pain or dysfunction after a shoulder dislocation often had a concomitant rotator cuff tear. Surgical repair resulted in improved pain relief and patient satisfaction compared to nonoperative management. Repair of the rotator cuff, along with concomitant capsulolabral lesions, helped restore shoulder stability. While these findings are based on Level III and IV evidence, better long-term studies with larger cohorts are needed to strengthen evidence-based recommendations. Persistent pain and dysfunction after a shoulder dislocation should prompt evaluation of the rotator cuff, especially in contact or overhead athletes, patients older than 40 years, or those with nerve injury. Surgery should be considered in the appropriately active patient with a rotator cuff tear after dislocation. While the current literature suggests improved stability and function after surgical repair of the rotator cuff, higher-quality prospective studies are necessary to make definitive conclusions.

The role of arthroscopic capsulo-labral repair in unidirectional post-traumatic shoulder instability in adolescent athletes participating in overhead or contact sports

this study was performed to identify the role of arthroscopic capsulo-labral repair (ACR) in unidirectional post-traumatic shoulder instability in adolescent athletes participating in overhead or contact sports. sixty-five adolescent patients (aged 13 to 18 years) with post-traumatic shoulder instability submitted to arthroscopic surgery were selected from our database. The mean follow-up duration was 63 months. Shoulder range of motion and functional outcomes were evaluated preoperatively and postoperatively using the Single Assessment Numeric Evaluation (SANE), Rowe, and American Shoulder and Elbow Surgeons (ASES) scores. In addition, details in the database on the type of sport practiced, time until surgery, and number of dislocations were analyzed to look for possible correlations with the recurrence rate. at the final follow-up, the mean SANE score was 87.23% (range: 30% to 100%) (preoperative mean score: 46.15% [range, 20% to 50%]); the mean Rowe score was 85 (range: 30 to 100) (preoperative mean score: 35.9 [range: 30 to 50]); and the mean ASES score was 84.12 (range: 30 to 100) (preoperative mean score: 36.92 [range: 30 to 48]). Mean forward flexion and external rotation with the arm at 90° abduction did not show changes compared with preoperative values; 81.5% of the patients returned to their pre-injury level of sports activities, and the failure rate was 21.5%. The recurrence rate was not related to the postoperative scores (p = 0.556 for SANE, p = 0.753 for Rowe, and p = 0.478 for ASES), number of preoperative episodes of instability (p = 0.59), or time that elapsed between the first instability episode and the surgery (p = 0.43). A statistically significant association (p = 0.0021) was found between recurrence and the type of sport practiced. ACR is a reasonable surgical option in an adolescent population participating in sports. It has a role in restoring shoulder stability with very low morbidity; however, the failure rate is higher than in the adult population and both the young patients and their relatives must be properly informed about the expected outcome of the procedure. level IV, therapeutic case series.

Arthroscopic Coracoid Transfer in the Treatment of Recurrent Shoulder Instability: A Systematic Review of Early Results

Systematic review of the literature to characterize safety profile and complication rates associated with arthroscopic coracoid transfer procedures. We conducted a combined search of Medline, EMBASE, and the CINAHL databases from 1985 to November 2012. Articles were selected and data extracted according to standard criteria. Only 3 studies met the inclusion criteria, and these originated from the pioneers of this technique. These studies described the results of 172 arthroscopic coracoid transfer procedures with an overall complication rate of 19.8% ± 5.6%. Conversion to open surgery was necessary in 6/172 (3.5%) patients. Repeated surgery was described in 5/172 (2.9% ± 2.5%) cases, all for screw removal. The overall rate of recurrent instability was 3/172 cases (1.7% ± 2%). Hardware-related complications occurred in 4/172 patients (2.3% ± 2.3%). Coracoid grafts failed to unite in 14/172 patients (8.1% ± 4.1%); graft osteolysis was seen in 7/172 patients (4.1% ± 2.6%). The coracoid graft fractured in 2/172 cases (1.2% ± 1.6%); one of these occurred intraoperatively and one occurred early postoperatively. There was one transient nerve palsy (0.6% ± 1.1%). Results of arthroscopic coracoid transfer surgery for anterior shoulder instability are sparse, with the available studies originating from the pioneers of this technique. Early results suggest that arthroscopic coracoid transfer is a technically feasible procedure that is able to restore shoulder stability. However, this technique seems to be associated with a high complication rate and a steep learning curve. Results from the wider orthopaedic shoulder arthroscopic community are awaited. Extensive cadaveric training and experience with the open technique is recommended before performing the arthroscopic procedure. Systematic review of Level IV studies.