Fascia Lata Autograft Research Articles

Arthroscopic Superior Capsular Reconstruction (ASCR): All Soft Anchors Technique

Rotator cuff tears are among the most common orthopaedic injuries. If not treated, they can result in a massive irreparable tear because of tendon retraction and muscle atrophy. Mihata et al. in 2012 described the technique of superior capsular reconstruction (SCR) using fascia lata autograft. This has been considered an acceptable and effective method for treating irreparable massive rotator cuff tears. We describe an arthroscopically assisted superior capsular reconstruction (ASCR) technique using all soft anchors to preserve the bone stock and reduce possible hardware complications. Moreover, knotless anchors for the lateral fixation make the technique easier to reproduce.

Polyurethane Scaffold vs Fascia Lata Autograft for Hip Labral Reconstruction: Comparison of Femoroacetabular Biomechanics.

The integrity of the acetabular labrum is critical in providing normal function and minimizing hip degeneration and is considered key for success in today's hip preservation algorithm. Many advances have been made in labral repair and reconstruction to restore the suction seal. To compare the biomechanical effects of segmental labral reconstruction between the synthetic polyurethane scaffold (PS) and fascia lata autograft (FLA). Our hypothesis was that reconstruction with a macroporous polyurethane implant and autograft reconstruction of fascia lata would normalize hip joint kinetics and restore the suction seal. Controlled laboratory study. Ten cadaveric hips from 5 fresh-frozen pelvises underwent biomechanical testing with a dynamic intra-articular pressure measurement system under 3 conditions: (1) intact labrum, (2) reconstruction with PS after a 3-cm segmental labrectomy, then (3) reconstruction with FLA. Contact area, contact pressure, and peak force were evaluated in 4 positions: 90º of flexion in neutral, 90º of flexion plus internal rotation, 90º of flexion plus external rotation, and 20º of extension. A labral seal test was performed for both reconstruction techniques. The relative change from the intact condition (value = 1) was determined for all conditions and positions. PS restored contact area to at least 96% of intact (≥0.96; range, 0.96-0.98) in all 4 positions, and FLA restored contact area to at least 97% (≥0.97; range, 0.97-1.19). Contact pressure was restored to ≥1.08 (range, 1.08-1.11) with the PS and ≥1.08 (range, 1.08-1.10) with the FLA technique. Peak force returned to ≥1.02 (range, 1.02-1.05) with PS and ≥1.02 (range, 1.02-1.07) with FLA. No significant differences were found between the reconstruction techniques in contact area in any position (P > .06), with the exception that FLA presented greater contact area in flexion plus internal rotation as compared with PS (P = .003). Suction seal was confirmed in 80% of PSs and 70% of FLAs (P = .62). Segmental hip labral reconstruction using PS and FLA reapproximated femoroacetabular contact biomechanics close to the intact state. These findings provide preclinical evidence supporting the use of a synthetic scaffold as an alternative to FLA and therefore avoiding donor site morbidity.

Superior capsular reconstruction using hybrid graft for irreparable massive rotator cuff tear.

To evaluate the clinical and radiological outcomes of arthroscopic superior capsular reconstruction (SCR) using hybrid grafts composed of tensor fascia lata autografts and human dermal allografts. This study included 30 patients with chronic irreparable posterosuperior rotator cuff tears (RCTs) who underwent arthroscopic SCR using a hybrid graft composed of tensor fascia lata autograft and human dermal allograft. Clinical outcomes were evaluated using the pain visual analogue scale score, shoulder range of motion, American Shoulder and Elbow Surgeons score, constant score, University of California-Los Angeles score, and simple shoulder test score preoperatively and at least 2years after surgery. Radiographic analysis included the Hamada classification grade, acromiohumeral distance (AHD), and graft integrity at 2years after surgery. All patients exhibited significant clinical improvement in all functional outcome measurements, except external rotation (all P < 0.05). The number of patients who exhibited pseudoparalysis decreased from 7 (23.3%) to 2 (6.7%) postoperatively. Complications were not observed. Radiologically, the mean postoperative AHD increased significantly from 6.9 ± 1.6cm to 8.8 ± 2.1cm at 2years postoperatively (P < 0.001). Twenty five out of the 30 (83.3%) patients showed successful graft healing, and all healing failures occurred on the humeral side. The differences between the healed-graft and failed-graft groups were significantly lower graft thickness (P = 0.001) and smaller AHD (P < 0.001) in the failed-graft group. Every functional outcome scores were not statistically different between healed-graft and failed-graft groups. An arthroscopic SCR technique using a hybrid graft consisting of a tensor fascia lata autograft and human dermal allograft showed satisfactory clinical outcomes in patients with irreparable RCTs. IV.

Anterior Cruciate Ligament Reconstruction Using a Fascia Lata Graft With FiberTape Augmentation

Reconstruction of the anterior cruciate ligament (ACL) is one of the most popular orthopedic surgical procedures. To date, numerous studies are available focusing on different reconstruction techniques using established autografts, such as hamstrings, bone patellar-tendon bone (BPTB), quadriceps tendon, or allograft tendons. In the present article, we describe a minimally invasive ACL reconstruction technique using a fascia lata autograft in combination with FiberTape (Arthrex, Naples, FL) augmentation using the TightRope II (Arthrex). The minimally invasive harvesting procedure is performed by using the new QuadPro Tendon Harvester (Arthrex). This technique is recommended for acute and chronic complete ACL ruptures or bundle ruptures in athletes or patients with high physical activity. The technique might allow early full weight bearing due to less donor site morbidity, early free range of motion, and early active rehabilitation due to the use of FiberTape as a augmentation device to reinforce the autograft. Clinical studies are necessary to prove the principle.

Fascia Lata Grafting Combined with Gluteal Flaps for Pelvic Floor Reconstruction after Oncologic Resection.

Background:Although recent methods of pelvic reconstruction using myocutaneous flaps have reduced postoperative morbidities‚ including pelvic abscess, the complication rates are still high due to the presence of a large dead cavity and poorly vascularized tissues secondary to preoperative chemoradiation therapy. We aimed to evaluate the usefulness and benefit of fascia lata autografting for pelvic floor reconstruction as a supplemental procedure for gluteal flap closure of perineal wounds.Methods:Our retrospective study included 144 consecutive patients who underwent rectal cancer resection with or without pelvic reconstruction, from 2010 to 2020. For reconstruction, fascia lata autografts were harvested from the thigh and affixed to the pelvic floor. The perineal wound was closed using gluteal advancement flaps.Results:The study included 33 reconstructed and 111 nonreconstructed patients (average age: 69.5 years). The reconstructed group was more likely to have undergone preoperative chemotherapy (81.8% versus 40.5%, P < 0.001) and radiotherapy (78.8% versus 48.6%, P = 0.002), compared with the nonreconstructed group. Additionally, the reconstructed group underwent fewer abdominoperineal resections (63.6% versus 94.6%, P < 0.001) and more pelvic exenterations (36.4% versus 5.4%). The mean size of fascia lata autografts was 8.3 × 5.9 cm. There were significant differences between the reconstructed and nonreconstructed groups, in the incidences of complications (15.2% versus 33.3%, P = 0.044) and pelvic abscess (3.0% versus 16.2%, P = 0.049).Conclusion:Combination of fascia lata autografts and gluteal flaps is considered an effective method of pelvic reconstruction for its low incidence of complications and stable outcomes.

Total Autologous Fascia Lata Sacrocolpopexy for Treatment of Pelvic Organ Prolapse: Experience in Thirty-Four Patients

ObjectiveTo develop a technique for open/robotic sacrocolpopexy using autologous fascia lata autograft. We report our experience in our first 34 patients. MethodsThe operation utilizes a 4-5-cm x 15-18-cm piece of fascia lata harvested through a 3-4-inch lateral upper thigh incision. The graft is configured into a traditional Y-shaped configuration using CV-2 Goretex sutures and is used to perform sacrocolpopexy. Patients were followed by history and physical, POP-Q scores, and symptoms related to thigh harvest including visual analog pain (VAP) scores. Treatment failure was defined as symptomatic pelvic organ prolapse (POP) involving apical descent. ResultsAutologous fascia lata sacrocolpopexy was performed on 34 patients with a mean age of 62. Mean follow-up was 13 months (range 2-42). Thirteen cases were open sacrocolpopexies, and 21 were robotic. Concurrent procedures included hysterectomy (9), vaginal mesh excision (7), bowel resection and rectopexy (5), and autologous sling (5). POP symptoms resolved in all 34 patients, and there were no treatment failures. The overwhelming majority of harvest site issues were minor and managed expectantly. Mean VAP score at the harvest site was 0.4 (range 0-3). Three patients developed non-bothersome thigh bulges. One patient developed a harvest site seroma. Twelve patients reported mild, non-bothersome harvest site paresthesias. No thromboembolic events occurred. ConclusionAutologous fascia lata sacrocolpopexy is an efficacious treatment for patients who desire non-mesh POP repair. Most harvest site issues are minor and typically resolve with expectant management alone. Continued follow-up of this series is ongoing to determine long-term success of this operation.

Patient Acceptable Symptom State, Minimal Clinically Important Difference, and Substantial Clinical Benefit After Arthroscopic Superior Capsular Reconstruction

Background: Patient Acceptable Symptom State (PASS), minimal clinically important difference (MCID), and substantial clinical benefit (SCB) have rarely been assessed after arthroscopic superior capsular reconstruction (ASCR) with fascia lata autograft. Purpose: (1) To investigate PASS, MCID, and SCB values for pain visual analog scale (pVAS), American Shoulder and Elbow Surgeons (ASES) score, Constant score, and Single Assessment Numeric Evaluation (SANE) after ASCR with fascia lata autograft, (2) to investigate factors for achieving PASS, MCID, and SCB. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: We retrospectively collected data from patients who underwent ASCR between June 2013 and October 2020. A total of 88 patients were included, and anchor questions for deriving PASS, MCID, and SCB values were applied at a minimum 1-year follow-up postoperatively. PASS, MCID, and SCB were derived using sensitivity- and specificity-based approaches. Univariable and multivariable logistic regression analyses were performed to determine factors for achieving PASS, MCID, and SCB. Results: Based on receiver operating characteristic curves, all 4 scores had acceptable area under the curve values (>0.7) for PASS, MCID, and SCB values. The PASS, MCID, and SCB values were 1.5, 2.5, and 4.5 for pVAS; 81.0, 19.0, and 27.5 for the ASES score; 60.5, −0.5, and 5.5 for the Constant score; and 75.0, 27.5, and 32.5 for SANE, respectively. Poor preoperative scores were related to significantly higher odds ratios (ORs) for achieving MCID and SCB. Wide acromiohumeral distance and dominant side were related to higher ORs for achieving PASS for the ASES score, and subscapularis tear was related to lower ORs for achieving PASS for pVAS and SCB for the Constant score. Conclusion: Reliable PASS, MCID, and SCB values were achieved for at least 1 year after ASCR surgery. Poor preoperative score, wide acromiohumeral distance, and dominant side all demonstrated higher ORs for at least one value, but a subscapularis tear demonstrated lower ORs for achieving PASS for pVAS and SCB for the Constant score.

Interposition arthroplasty for post-traumatic osteoarthritis of the elbow: a systematic review

PurposeInterposition arthroplasty for the post-traumatic osteoarthritic elbow is a salvage procedure used in young and active patients and remains a rare and unexplored therapeutic option.MethodsWe systematically reviewed the available literature searching electronic databases, MEDLINE using the PubMed interface and EMBASE. The primary objective was to synthesize functional outcomes and to investigate revision frequencies, but also complication and subsequent surgery rates among patients with surviving grafts. The preferred reporting guidelines for systematic reviews and meta-analyses guidelines were applied.ResultsFive studies were left for inclusion, all retrospective in design, comprising 67 patients. The mean age was 40 years, the mean follow-up period was 61 months, and 68.2% of the patients treated were male. Eleven patients (16.4%) were treated with fascia lata autografts, and 56 patients (83.6%) were treated with Achilles tendon allografts. The graft survived in 53 patients (79.1%); the post-operative Mayo Elbow Performance Score averaged 69 points. Fourteen patients (20.9%) required revision surgery. In the setting of graft survival, 39.1% of patients had complications not requiring further surgical treatment and 5.7% of patients with surviving grafts needed subsequent operative treatment within the follow-up period.ConclusionGiven graft survival, this systematic review demonstrated satisfactory functional outcomes following interposition arthroplasty of the post-traumatic osteoarthritic elbow, however, associated with a cumulative complication and subsequent operative treatment rate of 44.8%. In addition, a revision rate of 20.9% needs to be expected. Varus-valgus instability in the pre-operative clinical assessment seems to be associated with unsatisfactory post-operative elbow function. The superiority of either of the two main reported graft methods (fascia lata autograft and Achilles tendon allograft) remains pending, and the role of an external fixator in preventing post-operative instability remains unresolved.

Postoperative MRI signal intensity correlates functional outcomes after superior capsular reconstruction.

Superior capsular reconstruction (SCR) using fascia lata autograft has been performed for irreparable rotator cuff tear recently. The signal-to-noise quotient (SNQ) of the graft on magnetic resonance imaging (MRI) may reflect the degree of graft maturity and healing. However, how SNQ changes with graft remodelling and time and whether this change correlates with postoperative clinical outcomes after SCR remain unknown. This study aimed to explore the correlation between SNQ of the fascia lata autograft and clinical functional outcomes after SCR. Patients with irreparable posterosuperior rotator cuff tear undergoing SCR using fascia lata autograft between 2013 and 2017 were retrospectively analysed. For clinical outcomes, the American Shoulder and Elbow Surgeons (ASES) score, Constant-Murley score, Single Assessment Numeric Evaluation (SANE), and Visual Analogue Scale (VAS) for pain and range of motion (ROM; forward flexion and external rotation) were evaluated at postoperative 6 and 12months. Signal intensity of the humeral, mid-substance, and glenoid sites and background were measured to calculate the SNQ values on follow-up MRI at 3 and 12months. The correlations between clinical outcomes and SNQ at different time points were then analysed. A total of 15 patients were enrolled in the study. The mean postoperative VAS score significantly increased at postoperative 6months and significantly decreased at postoperative 12months. Except for forward flexion, all other functional outcomes were improved at postoperative 6months. Analysis of MRI showed SNQ at the humeral (SNQh), mid-substance, and glenoid sites decreased from postoperative 3to 12months with a statistical significance detected in SNQh (P < 0.01). Correlation analyses showed that the SNQh values negatively correlated with VAS, ASES, Constant-Murley score, SANE, ROM (forward flexion), and ROM (external rotation) (all P < 0.05). SNQ of the fascia lata autograft decreased with time in patients receiving SCR. SNQ at the humeral site was negatively correlated with clinical outcomes. III.

Arthroscopic Superior Capsule Reconstruction With Fascia Lata Autograft And In-Situ Biceps Tendon Augmentation: Feasible Outcomes After Minimum Two-Year Follow-Up

PurposeTo investigate the preliminary functional and radiographic outcomes after arthroscopic superior capsule reconstruction (SCR) with long head of biceps tendon (LHBT) augmentation for irreparable rotator cuff tears (RCTs).MethodsRetrospective review of medical records was conducted in patients receiving unilateral SCR with fascia lata autograft and LHBT augmentation for irreparable RCTs between January 2016 and March 2019. LHBT was adopted when the integrity was intact or partial tear was less than 50% in width. We used all-suture anchors for folded graft patch fixation with 2 in supraglenoid fossa and another 2 plus two knotless anchors via compression suture-bridging technique in greater tuberosity. Reinforced fixation with side-to-side suture was added between infraspinatus tendon and graft patch, and between proximal LHBT and graft to improve force coupling. Clinical and radiographic outcomes including magnetic resonance imaging analysis at 2-year follow-up were investigated and compared with preoperative status.ResultsConsecutive 18 patients (mean age, 66.1 years) were included. Mean active forward elevation significantly improved from 75.6⁰ to 157.2⁰ (P < .0001), and external rotation from 33.3⁰ to 53.3⁰ (P < .01). Mean acromiohumeral distance increased from 6.1 ± 2.5 mm to 8.5 ± 2.1 mm (P < .001). The American Shoulder and Elbow Surgeons score improved from 33.8 ± 5.6 to 93.4 ± 5.92 points (P < .00001). Comparable outcomes were found in patients with intact LHBT and those with partial tear. Nine patients had partial tear of graft patch (5, tuberosity side; 4 posterior glenoid); 2 patients had complete tear (tuberosity side) showing inferior outcomes.ConclusionsThe index surgery restored superior glenohumeral stability and function of the shoulder with irreparable RCTs. Despite high incidence of partial graft tear, favorable outcomes suggest SCR with biceps tendon augmentation is a feasible treatment for irreparable RCTs.Level of EvidenceLevel IV, therapeutic case series.

Biomechanical and Histological Results of Dual-Suspensory Reconstruction Using Banded Tendon Graft to Bridge Massive Rotator Cuff Tears in a Chronic Rabbit Model

Background: Bridging rotator cuff tendon defects with a patch is a reasonable treatment for massive rotator cuff tears (MRCTs). However, the poor outcomes associated with routine patch repair have prompted exploration into superior bridging techniques and graft structures. Purpose: To detect whether dual-suspensory reconstruction using a banded graft would be superior to routine bridging using a patch graft to treat MRCTs and to detect the comparative effectiveness of patellar tendon (PT) and fascia lata (FL) grafts in dual-suspensory reconstruction. Study Design: Controlled laboratory study. Methods: Unilateral chronic MRCTs were created in 72 mature male New Zealand White rabbits, which were randomly divided into 3 groups: (1) patch bridging repair using rectangular FL autograft (PR-FL), (2) dual-suspensory bridging reconstruction using banded FL autograft (DSR-FL), and (3) dual-suspensory bridging reconstruction using banded PT autograft (DSR-PT). In each group, the mean failure load and stiffness of the cuff-graft-humerus (C-G-H) complexes of 6-week and 12-week specimens were recorded, with the failure modes and sites noted. Moreover, cuff-to-graft and graft-to-bone interface healing and graft substance remodeling of the complexes were histologically evaluated (via hematoxylin and eosin, Picrosirius red, Masson trichrome, and Safranin O/fast green staining) at 6 and 12 weeks to assess integrations between the bridging constructs and the native bone or rotator cuff tendons. Results: The DSR-PT group had the greatest mean failure loads and stiffness of the C-G-H complexes at 6 and 12 weeks (41.81 ± 7.00 N, 10.34 ± 2.68 N/mm; 87.62 ± 9.20 N, 17.98 ± 1.57 N/mm, respectively), followed by the DSR-FL group (32.04 ± 5.49 N, 8.20 ± 2.27 N/mm; 75.30 ± 7.31 N, 14.39 ± 3.29 N/mm, respectively). In the DSR-PT and DSR-FL groups, fewer specimens failed at the graft-to-bone junction and more failed at the cuff-to-graft junction, but both groups had higher median failure loads at 6 and 12 weeks (DSR-PT: cuff-to-graft junction, 37.80 and 83.76 N; graft-to-bone junction, 45.46 and 95.86 N) (DSR-FL: cuff-to-graft junction, 28.52 and 67.68 N; graft-to-bone junction, 37.92 and 82.18 N) compared with PR-FL (cuff-to-graft junction, 27.17 and 60.04 N; graft-to-bone junction, 30.12 and 55.95 N). At 12 weeks, the DSR-FL group had higher median failure loads at graft substance (72.26 N) than the PR-FL group (61.27 N). Moreover, the PR-FL group showed more inflammatory responses at the 2 healing interfaces and the graft substance in the 6-week specimens and subsequently displayed poorer interface healing (assessed via collagen organization, collagen maturity, and fibrocartilage regeneration) and graft substance remodeling (assessed via collagen organization and maturity) in 12-week specimens compared with the DSR-PT and DSR-FL groups. Superior interface healing and substance remodeling processes were observed in the DSR-PT group compared with the DSR-FL group. Conclusion: When compared with routine patch repair, the dual-suspensory reconstructions optimized biomechanical properties and improved interface healing and graft substance remodeling for bridging MRCTs. Furthermore, the dual-suspensory technique using the PT graft presented superior histological and biomechanical characteristics than that using FL. Clinical Relevance: The dual-suspensory reconstruction technique using banded tendon grafts may enhance bridging constructs for MRCTs in humans, warranting further investigations of clinical outcomes.

Outcomes of arthroscopic-assisted middle trapezius tendon transfer for isolated irreparable supraspinatus tendon tears: minimum 2-year follow-up.

Middle trapezius tendon (MTT) transfer has been proposed as a feasible option for managing isolated irreparable supraspinatus tears (IISTTs). However, no clinical study has been attempted. This study aimed to evaluate clinical and radiologic outcomes of arthroscopic-assisted MTT transfer in patients with IISTTs. This retrospective study included patients who underwent arthroscopic-assisted MTT transfer using fascia lata autograft for IISTTs. Clinical outcomes, including pain visual analog scale (VAS), Constant, American Shoulder and Elbow Society (ASES), University of California Los Angeles (UCLA) shoulder scores and active range of motion (aROM), were assessed. Radiographic analyses included the acromiohumeral distance (AHD), Hamada grade, and transferred tendon integrity at the final follow-up. Twenty-two patients (mean age: 63.3 ± 6.8 [51‒74] years; mean follow-up period: 28.9 ± 4.9 [24‒44] months) met the study criteria. The mean VAS, Constant, ASES, and UCLA scores improved postoperatively at the final follow-up (p < 0.001). The mean aROMs for forward flexion and abduction were significantly increased postoperatively. No significant changes of AHD (p = 0.105) and Hamada grade (p = 0.815) were observed postoperatively. One patient had a re-tear of the transferred tendon at the footprint site at the final follow-up. In this minimum 2-year follow-up study of the novel aMTT transfer using fascia lata autograft, we found significant improvement in pain relief, clinical scores, and active forward flexion and abduction. Additionally, no significant progression of cuff tear arthropathy was observed at the final follow-up. Therefore, aMTT transfer could be a promising treatment option for patients with IISTTs. However, further multicenter and long-term trials are needed to verify its effectiveness. Retrospective case series, level IV.

Poster 128: Association Between Postoperative Graft Integrity and Clinical Outcomes After Superior Capsule Reconstruction: A Multicenter Study

Objectives:Superior capsule reconstruction (SCR) was developed as a joint-preserving surgical option for patients with irreparable rotator cuff tears (RCTs). Previous studies have postulated that graft thickness and graft healing may be important factors for optimizing the clinical outcomes of SCR. However, the correlation between postoperative graft integrity and clinical outcomes after SCR remains unclear. The objective of this study was to assess the correlation between postoperative graft integrity and clinical outcomes after SCR in patients with irreparable RCTs.Methods:This retrospective multicenter study enrolled 188 patients (86 women and 102 men; mean age, 69.2 years; range, 49–87 years) who underwent arthroscopic SCR using fascia lata autografts for irreparable RCTs from five different centers. Postoperative graft integrity was evaluated using magnetic resonance imaging and was classified into five categories: type I, sufficient graft thickness with homogeneously low intensity; type II, sufficient graft thickness with partial high intensity; type III, insufficient graft thickness (4 mm or less) without discontinuity; type IV, presence of a minor discontinuity in less than four slices on both oblique coronal and sagittal images, suggesting a small graft tear; type V, presence of a major discontinuity in four or more slices on both oblique coronal and sagittal images, suggesting a large graft tear. We compared the visual analog scale (VAS) for pain, American Shoulder and Elbow Surgeons (ASES) score, active shoulder range of motion (ROM), muscle strength (assessed with manual muscle test), and acromiohumeral distance (AHD) among the five groups based on postoperative graft integrity. For the statistical analyses, Kruskal-Wallis test (nonparametric one-way analysis of variance) followed by pairwise group comparisons using the Dwass-Steel-Critchlow-Fligner procedure was used to compare the values among the five groups based on the postoperative graft integrity assessment. Paired t-test or Wilcoxon signed-rank test was used to compare the preoperative and postoperative clinical outcome measures and AHD. Statistical significance was defined as P <0.05.Results:VAS and ASES score significantly improved after SCR in all graft types (all P<.05) (Table 1). However, shoulders with type V grafts had significantly inferior postoperative VAS and ASES score compared to those with type I and II grafts (all P<.05). Shoulders with intact grafts (types I, II, and III) showed significant improvements in shoulder ROM (all P<.05) (Table 2) and muscle strength after SCR (all P<.05) (Table 3). In contrast, shoulders with graft tears (types IV and V) showed no significant improvement in the range of external and internal rotation and shoulder muscle strength in any direction. Postoperative AHD was significantly increased only in shoulders with sufficient graft thickness (types I and II) (both P<.0001) (Table 4).Conclusions:Arthroscopic SCR provided pain relief even in patients with graft tears. However, patients with large graft tears had significantly inferior postoperative clinical scores compared to those with intact graft of sufficient thickness. Shoulder ROM and muscle strength were increased after SCR in shoulders with intact grafts but not in those with large graft tears. Postoperative AHD was significantly increased only in shoulders with intact graft of sufficient thickness. These results suggest that postoperative graft integrity affect clinical outcomes after SCR. An intact graft of sufficient thickness restored glenohumeral stability and substantially improved clinical outcomes.Table 1.Change in Visual Analog Scale and American Shoulder and Elbow Surgeons score after Superior Capsule ReconstructionTable 2.Change in Active Shoulder Ranges of Motion from Preoperative to Postoperative EvaluationTable 3.Change in Shoulder Muscle Strength after Superior Capsule ReconstructionTable 4.Change in Acromiohumeral distance after Superior Capsule Reconstruction

The Plug-Type Patch Results in Immediate and Postoperative Advantages in Graft-to-Bone Integration for Bridging Massive Rotator Cuff Tears in a Chronic Rabbit Model

Background: Various patches have been used to bridge massive rotator cuff tears (MRCTs) by reconnecting the cuff tendons to the humeral head, but the outcomes continue to be suboptimal. Notably, the graft-bone junction is a vulnerable site for failure, which requires optimization in patch design and techniques to enhance initial and postoperative fixation strength at the graft-bone interface. Hypothesis: The plug-type patch (Plug-Pat) through intratunnel fixation would optimize mechanical characteristics in initial graft-to-bone fixation and subsequently improve postoperative biomechanical and histological properties in graft-to-bone healing when compared with the routine rectangular patch (Rect-Pat). Study Design: Controlled laboratory study. Methods: A total of 60 mature male New Zealand White rabbits underwent acute rotator cuff defects to create chronic models with MRCTs. The fascia lata autograft was then harvested to prepare a Plug-Pat, which was distally rooted in the bone tunnel and proximally sutured to native tendons in a horizontal mattress fashion to reconnect the humeral head and cuff tendons. The control group was repaired with a routine Rect-Pat that was secured onto the bone surface for graft-bone fixation. After surgery, the cuff-graft-bone complexes of rabbits in both groups were harvested immediately (0 weeks) for time-zero initial fixation strength and refreshed contact area assessment, and at 6 or 12 weeks for postoperative biomechanical and histological evaluation. Results: The Plug-Pat significantly enhanced initial fixation strength in comparison with the Rect-Pat (mean ± SD; failure load, 36.79 ± 4.53 N vs 24.15 ± 2.76 N; P < .001) and decreased failure at the graft-bone interface of the construct at 0 weeks, with a significantly increased refreshed bone bed contact area (52.63 ± 2.97 mm2 vs 18.28 ± 1.60 mm2; P < .001) between the graft and bone. At 6 and 12 weeks postoperatively, the Plug-Pat similarly resulted in greater failure load (43.15 ± 4.53 N vs 33.74 ± 2.58 N at 6 weeks; P = .001; 76.65 ± 5.04 N vs 58.17 ± 5.06 N at 12 weeks; P < .001) and stiffness (10.77 ± 2.67 N/mm vs 8.43 ± 0.86 N/mm at 6 weeks; P = .066; 16.98 ± 2.47 N/mm vs 13.21 ± 1.66 N/mm at 12 weeks; P = .011), with less specimen failure at the graft-bone interface than the Rect-Pat. In histological analyses, the Plug-Pat had a higher postoperative graft-bone integration score than the Rect-Pat, showing a more mature intratunnel healing interface with fibrocartilage tidemark formation, improved collagen properties, and more oriented cells when compared with those at the surface healing interface in the Rect-Pat. Conclusion: The Plug-Pat enhanced initial fixation strength and enlarged the refreshed contact area for graft-bone connection at time zero and subsequently improved postoperative biomechanical properties and graft-bone integration at the graft-bone healing interface when compared with the Rect-Pat. Clinical Relevance: The Plug-Pat using intratunnel fixation may be a promising strategy for patch design to optimize its initial and postoperative graft-bone connection for bridging reconstruction of MRCTs.

Histological changes during the healing of fascia lata autografts after superior capsule reconstruction for the irreparable rotator cuff tear in rabbits

Superior capsule reconstruction (SCR) has been developed to improve shoulder function and relieve pain during treatment of irreparable rotator cuff tears. To date, the underlying healing process remains unclear. We aimed to investigate the histological changes that occur during the healing process associated with autologous fascia lata grafts after SCR in vivo.

Shoulder Superior Capsular Reconstruction Hybrid Graft Thickness Greater Than Preoperative Acromiohumeral Distance Increases Graft Retear Rate and Subacromial Erosion

To evaluate the impact of graft thickness on clinical outcomes and graft retear after superior capsular reconstruction (SCR) using a hybrid graft combining both fascia lata autograft and dermal allograft in patients with massive rotator cuff tear (MRCT). Between January 2017 and February 2019, this study enrolled 58 patients with MRCT who underwent SCR using a hybrid graft combining both fascia lata autograft and dermal allograft. We evaluated clinical outcomes and compared differences between the graft intact and the graft retear group. Moreover, subgroup analysis was performed for patients having a preoperative acromiohumeral distance (AHD) less than or equal to the used graft thickness (group 1) and the results were compared with those for preoperative AHD greater than the used graft thickness (group 2). Fifty-five patients who underwent MRCT with a mean age of 65.1 ± 5.7 years old were followed up during a mean period of 30.5 ± 6.5 (range, 24-37) months. There were significant differences in clinical outcome measures preoperatively and postoperatively (P < .05). There were no significant differences in clinical outcomes between the graft intact and graft retear groups (P > .05). The subgroup analysis revealed that the retear (68.6% vs 30.4%, P= .004) and subacromial erosion rates (91.4% vs 60.9%, P= .005) were significantly greater in for patients having a preoperative AHD less than or equal to the used graft thickness (group 1). SCR using a hybrid graft combining both fascia lata autograft and dermal allograft is promising with improved clinical scores (P < .05) irrespective of the graft integrity. The use of a graft with a thickness greater than a patient's preoperative AHD could increase graft retear and subacromial erosion rates after SCR. However, there was no significant difference in clinicaloutcomes according to the relationship between used graft thickness and preoperative AHD. Level IV, therapeutic case series.

Superior capsular reconstruction for management of massive irreparable rotator cuff tears: current concepts

Irreparable massive rotator cuff tears in active middle-aged patients result in significant shoulder dysfunction and challenge surgeons in their treatment selection. Superior capsular reconstruction (SCR) is a joint-preserving surgical option that restores glenohumeral stability and prevents superior humeral head migration, thereby improving shoulder function, lessening pain, and limiting development of rotator cuff arthropathy. Indications for SCR are irreparable supraspinatus and/or infraspinatus tears with persistent shoulder pain and/or dysfunction for which conservative treatment has failed in a patient who is not an ideal candidate for arthroplasty because of age or activity level. Patients must have relatively preserved glenohumeral cartilage, an intact or repairable subscapularis tendon, and a fully functioning deltoid muscle to be an appropriate candidate for SCR. The procedure was originally described by Dr. Teruhisa Mihata using fascia lata autograft; however, in North America, dermal allograft has become the most common graft choice. The graft is secured medially to the superior glenoid with two or three suture anchors and laterally to the tuberosity commonly using four anchors in a double-row configuration. Preliminary clinical studies demonstrate significant improvement in pain, function, muscle strength, active shoulder range of motion with resolution of pseudoparalysis, normalization of the acromiohumeral interval, and no rapid progression of osteoarthritis. Superior capsular reconstruction is a viable, joint-sparing surgical option for irreparable massive rotator cuff tears.

Superior capsule reconstruction: anatomy, biomechanics, indications, and graft treatment.

Superior capsule reconstruction: anatomy, biomechanics, indications, and graft treatment.

Clinical and Functional Outcomes by Graft Type in Superior Capsular Reconstruction: A Systematic Review and Meta-analysis

Background: In recent years, superior capsular reconstruction (SCR) has emerged as a promising treatment for massive rotator cuff tears and has been performed with an array of graft options, most commonly dermal allograft and tensor fascia lata (TFL) autograft. Purpose: To compare the clinical outcomes, functional outcomes, and complication rates after SCR performed with dermal allograft, TFL autograft, long head of the biceps tendon (LHBT) autograft, and porcine xenograft. Study Design: Meta-analysis; Level of evidence, 4. Methods: PubMed, Cochrane Library, and Embase were systematically reviewed for studies that enrolled ≥10 patients who underwent SCR and presented clinical outcome data at a minimum follow-up of 12 months. When available, pre- and postoperative patient-reported outcome scores and clinical examination data were extracted. Outcome data were then compared by graft type. A meta-analysis was also conducted of graft tear and reoperation rates after SCR with dermal allograft and TFL autograft. Results: Human dermal allograft and TFL autograft were each utilized in 7 studies, LHBT autograft in 2 studies, and porcine xenograft in 1 study. Dermal allograft, TFL autograft, and LHBT autograft demonstrated comparable median (range) postoperative American Shoulder and Elbow Surgeons scores of 85.3 (77.5-89), 88.6 (73.7-94.3), and 82.7 (80-85.4), respectively. The median postoperative pain scores per visual analog scale for dermal allograft, TFL autograft, and LHBT autograft were 0.8, 2.5, and 1.4. Median postoperative forward elevation was 159.0°, 147.0°, 163.8°, and 151.4° for dermal allograft, TFL autograft, LHBT autograft, and porcine xenograft. Meta-analysis demonstrated a comparable pooled graft tear rate between TFL autograft (9%; 95% CI, 4%-16%) and dermal allograft (7%; 95% CI, 2%-13%). Similarly, the pooled reoperation rate was similar for TFL autograft (3%; 95% CI, 0%-7%) and dermal allograft (6%; 95% CI, 2%-12%). Among the 3 studies with pre- and postoperative information on pseudoparalysis, 73 of 76 (96%) patients with an intact/repairable subscapularis had a reversal of their pseudoparalysis after SCR. Conclusion: Dermal allograft, TFL autograft, and LHBT autograft are all suitable options for SCR and demonstrate significant improvements in American Shoulder and Elbow Surgeons score, pain score per visual analog scale, and forward elevation. Moreover, dermal allograft and TFL autograft have comparable rates of graft tear and reoperation.

Histologic changes during healing with autologous fascia lata graft after superior capsule reconstruction in rabbit model.

Superior capsule reconstruction (SCR) has been developed to improve shoulder function and relieve pain in the treatment of irreparable rotator cuff tears. Previous studies have reported that graft healing can enhance favorable outcomes after SCR. On the other hand, graft tears often lead to less desirable outcomes and sometimes require additional surgical procedures. However, the healing process underlying this remains unclear. In this study, we aimed to investigate histologic changes occurring during the healing process associated with autologous fascia lata graft after SCR invivo. We hypothesized that (1) autologous fascia lata graft can regenerate the fibrocartilaginous insertion into both the greater tuberosity and superior glenoid and (2) the midsubstance of the grafted fascia gradually remodels into tendon- and/or ligament-like tissue after SCR. Irreparable supraspinatus tendon defects were created in 24 mature Japanese white rabbits (age, 6 months; mean weight, 3.2 kg). Four weeks after creation of the defects, the right shoulders were subjected to SCR using autologous fascia lata grafts. The left shoulders were left untreated. Samples from the shoulders were harvested at 4, 8, 12, and 16 weeks after surgery to undergo histologic and immunohistochemical examinations. Macroscopically, we did not observe graft tears after SCR in our experiments. Histologically, the number of chondrocyte-like cells gradually increased, and the extracellular matrices around those cells contained glycosaminoglycan at the fascia-bone junction after SCR. The unmineralized fibrocartilage, mineralized fibrocartilage, and tidemark were observed 16 weeks after SCR. The distribution of type II collagen presented a pattern similar to that of a normal tendon and ligament insertion. The cells and collagen fiber gradually oriented parallelly to the long axis in the midsubstance of the grafted fascia lata. Additionally, type III collagen was replaced with type I collagen in the midsubstance of the grafted fascia lata after SCR. SCR using fascia lata autograft regenerated the fibrocartilaginous insertion at both the greater tuberosity and superior glenoid. The midsubstance of the grafted fascia gradually remodeled into tendon- and/or ligament-like tissue. These results suggest that the fascia lata autograft has the capacity for graft-to-bone healing and remodeling after SCR.