Intrasubstance Tears Research Articles

What Is the Influence of Femoral Version on Size, Tear Location, and Tear Pattern of the Acetabular Labrum in Patients With FAI?

Femoral version deformities have recently been identified as a major contributor to femoroacetabular impingement (FAI). An in-depth understanding of the specific labral damage patterns caused by femoral version deformities may help to understand the underlying pathomorphologies in symptomatic patients and select the appropriate surgical treatment. We asked: (1) Is there a correlation between femoral version and the mean cross-sectional area of the acetabular labrum? (2) Is there a difference in the location of lesions of the acetabular labrum between hips with increased femoral version and hips with decreased femoral version? (3) Is there a difference in the pattern of lesions of the acetabular labrum between hips with increased femoral version and hips with decreased femoral version? This was a retrospective, comparative study. Between November 2009 and September 2016, we evaluated 640 hips with FAI. We considered patients with complete diagnostic imaging including magnetic resonance arthrography (MRA) of the affected hip with radial slices of the proximal femur and axial imaging of the distal femoral condyles (allowing for calculation of femoral version) as eligible. Based on that, 97% (620 of 640 hips) were eligible; a further 77% (491 of 640 hips) were excluded because they had either normal femoral version (384 hips), incomplete imaging (20 hips), a lateral center-edge angle < 22° (43 hips) or > 39° (16 hips), age > 50 years (8 hips), or a history of pediatric hip disease (20 hips), leaving 20% (129 of 640 hips) of patients with a mean age of 27 ± 9 years for analysis, and 61% (79 of 129 hips) were female. Patients were assigned to either the increased (> 30°) or decreased (< 5°) femoral version group. The labral cross-sectional area was measured on radial MR images in all patients. The location-dependent labral cross-sectional area, presence of labral tears, and labral tear patterns were assessed using the acetabular clockface system and compared among groups. In hips with increased femoral version, the labrum was normal in size (21 ± 6 mm 2 [95% confidence interval 20 to 23 mm 2 ]), whereas hips with decreased femoral version showed labral hypotrophy (14 ± 4 mm 2 [95% CI 13 to 15 mm 2 ]; p < 0.01). In hips with increased femoral version, labral tears were located more anteriorly (median 1:30 versus 12:00; p < 0.01). Hips with increased femoral version exhibited damage of the anterior labrum with more intrasubstance tears anterosuperiorly (17% [222 of 1322] versus 9% [93 of 1084]; p < 0.01) and partial tears anteroinferiorly (22% [36 of 165] versus 6% [8 of 126]; p < 0.01). Hips with decreased femoral version showed superior labral damage consisting primarily of partial labral tears. In the evaluation of patients with FAI, the term "labral tear" is not accurate enough to describe labral pathology. Based on high-quality radial MR images, surgeons should always evaluate the combination of labral tear location and labral tear pattern, because these may provide insight into associated femoral version abnormalities, which can inform appropriate surgical treatment. Future studies should examine symptomatic patients with normal femoral version, as well as an asymptomatic control group, to describe the effect of femoral version on labral morphology across the entire spectrum of pathomorphologies. Level III, prognostic study.

Relationship Between Age and Pathology With Treatment of Pediatric and Adolescent Discoid Lateral Meniscus: A Report From the SCORE Multicenter Database

Background: Surgical treatment options of discoid lateral meniscus in pediatric patients consist of saucerization with or without meniscal repair, meniscocapular stabilization, and, less often, subtotal meniscectomy. Purpose: To describe a large, prospectively collected multicenter cohort of discoid menisci undergoing surgical intervention, and further investigate corresponding treatment of discoid menisci. Study Design: Cohort study; Level of evidence, 3. Methods: A multicenter quality improvement registry (16 institutions, 26 surgeons), Sports Cohort Outcomes Registry, was queried. Patient characteristics, discoid type, presence and type of intrasubstance meniscal tear, peripheral rim instability, repair technique, and partial meniscectomy/debridement beyond saucerization were reviewed. Discoid meniscus characteristics were compared between age groups (<14 and >14 years old), based on receiver operating characteristic curve, and discoid morphology (complete and incomplete). Results: In total, 274 patients were identified (mean age, 12.4 years; range, 3-18 years), of whom 55.6% had complete discoid. Meniscal repairs were performed in 55.1% of patients. Overall, 48.5% of patients had rim instability and 36.8% had >1 location of peripheral rim instability. Of the patients, 21.5% underwent meniscal debridement beyond saucerization, with 8.4% undergoing a subtotal meniscectomy. Patients <14 years of age were more likely to have a complete discoid meniscus (P < .001), peripheral rim instability (P = .005), and longitudinal tears (P = .015) and require a meniscal repair (P < .001). Patients ≥14 years of age were more likely to have a radial/oblique tear (P = .015) and require additional debridement beyond the physiologic rim (P = .003). Overall, 70% of patients <14 years of age were found to have a complete discoid meniscus necessitating saucerization, and >50% in this young age group required peripheral stabilization/repair. Conclusion: To preserve physiological “normal” meniscus, a repair may be indicated in >50% of patients <14 years of age but occurred in <50% of those >14 years. Additional resection beyond the physiological rim may be needed in 15% of younger patients and 30% of those aged >14 years.

Comparison of Clinical Outcomes after Platelet-Rich Plasma and Rotator Cuff Repair in High-Grade Intrasubstance Partial Rotator Cuff Tears.

Platelet-rich plasma injections have been shown to have many useful applications in various musculoskeletal pathologies. Research on the use of PRP for intrasubstance partial-thickness rotator cuff tears is lacking, although these tears have unique properties that may increase the efficacy of platelet-rich plasma injections. Patients with MRI-confirmed high-grade intrasubstance partial-thickness rotator cuff tears, that had failed traditional non-operative treatment, were offered either surgical repair (Group 1) or a single ultrasound-guided platelet-rich plasma injection into the tear site (Group 2). Patients were followed at 2 weeks, 6 weeks, 3 months, and a minimum of 2 years post-injection with ASES scores. A total of 25 patients received platelet-rich plasma injections, compared to 20 patients who had rotator cuff repair for intrasubstance tears in the last 3 years. The mean pre-injection ASES score for the platelet-rich plasma group was 53.2 and this improved to 92.9 at a minimum 2-year follow-up. The average convalescence period following platelet-rich plasma injection was 3.3 months. The average post-operative convalescence period for arthroscopic rotator cuff repair was 4.6 months. Both surgical repair and platelet-rich plasma injection into the tear site are equally effective in the treatment of high-grade intrasubstance partial-thickness rotator cuff tears, while platelet-rich plasma provides significantly shorter recovery time.

Tibialis Anterior Tendon Intrasubstance Tear Associated with Anterior Talofibular Ligament Tear: A Rare Encounter

Tibialis anterior (TA) tendon injury is an uncommon condition among other foot and ankle tendon pathology and there is insufficient literature on incomplete or intrasubstance TA tendon tear. To date, no cases of TA tendon injury with concurrent anterior talofibular ligament (ATFL) tear has been documented. This is a rare case of a 22-year-old gentleman with ankle injury following sports activity and magnetic resonance imaging (MRI) ankle showed incomplete TA tendon tear with concurrent ATFL tear. We proceeded with TA tendon direct repair and ATFL reconstruction. Patient showed good recovery and at third months, sixth months and 1-year post-surgery, American Orthopaedic Foot and Ankle Score (AOFAS) Ankle-Hindfoot scores were 86%, 90% and 96%, respectively. In TA tendon injury, incomplete tear or longitudinal split is reported mostly due to TA tendinopathy or degeneration. Early diagnosis followed by surgical treatment is shown to give better results, which can be either direct primary repair, tendon transfer or tendon reconstruction.

Low-load exercise program and platelet-rich plasma for intrasubstance tear in lateral elbow tendinopathy: protocol for a double-blinded randomized clinical trial

Background: Lateral elbow tendinopathy (LET) is one of the most common musculoskeletal conditions. Treatment includes a series of therapeutic alternatives. However, the resolution takes nearly 24 months. Platelet-rich plasma (PRP) is an effective option, especially when the tendon presents an intrasubstance tear (IST). It is unknown what type of rehabilitation plan is more effective after this treatment. Aim: To perform a study protocol of a double-blinded, randomized clinical trial to determine the efficacy of a specific low-load exercise program in patients with LET and IST treatment with PRP under US-guided Methods: A single-center, parallel-controlled, randomized, double-blinded, phase III trial was pro-posed. Patients over 18 years-old diagnosed with LET and IST treated with US-guided PRP will be selected. Two arms of treatment will be allocated with a ratio a 1:1 ratio (low-load exercise protocol vs. conventional exercise program). The principal outcome will be the reduction of the tendon tear size. Secondary outcomes will include Patient-Rated Tennis Elbow Evaluation score, visual analogue scale, and handgrip at baseline, 3, 6, and 12 months of follow-up. Statistical tests will be 2-sided t-test with an alpha level (significance level) of 0.05. Discussion: The intervention aims to significantly reduce tendon tear size and improve pain and functionality in patients with LET and IST treated with US-guided PRP. We proposed one of the first studies in the literature that considered a detailed standardized exercise protocol applied to these patients. The result could be used to speed up treatment save time and money, help evaluate guidelines, and improve patients' and athletes' quality of life.

OSSEOUS FEMORAL AVULSION OF THE ACL ORIGIN, WITH AN OTHERWISE INTACT ACL – A CASE REPORT

Anterior cruciate ligament (ACL) avulsion fracture is commonly associated with knee injuries and its management is controversial ranging from conservative treatment to arthroscopic xation. (1) They occur due to sporting or high-velocity trauma. Tears of the anterior cruciate ligament supersede osseous avulsion in the adult demographic. In adults, ACL tears commonly occur in the mid-substance and less commonly avulses from its tibial attachment. Femoral avulsions of the ACL occur less frequently (2). Most of the cases reported in the clinical literature occurred in the skeletally immature patients because of relatively elastic connective tissue and correspondingly weaker bony structures (2). Avulsion fractures of the cruciate ligaments are important, as they can be identied on radiographs, allowing a specic diagnosis. The treatment of cruciate ligament avulsion fractures is different than the treatment of intrasubstance tears of the cruciate ligaments. These injuries can be treated conservatively or surgically with good outcomes. Recently arthroscopic xation of these injuries with various xation devices has become more frequent. Treatment largely depends on the type of fracture, particularly, the size, displacement, comminution, and orientation of the avulsed fracture fragment, in addition to the integrity of the attached cruciate ligament. (3)

A RANDOMIZED CONTROLLED STUDY OF AUTOLOGOUS TENOCYTE INJECTION (ATI) VERSUS CORTICOSTEROID INJECTION FOR INTERSTITIAL ROTATOR CUFF TEAR AND IMPINGEMENT SYNDROME

Interstitial supraspinatus tears can cause persistent subacromial impingement symptoms despite non operative treatment. Autologous tendon cell injection (ATI) is a non-surgical treatment for tendinopathies and tear. We report a randomised controlled study of ATI compared to corticosteroid injection (CS) as treatment for interstitial supraspinatus tears and tendinopathy.Inclusion criteria were patients with symptom duration &gt; 6 months, MRI confirmed intrasubstance supraspinatus tear, and prior treatment with physiotherapy and ≥ one CS or PRP injection. Participants were randomised to receive ATI to the interstitial tear or corticosteroid injection to the subacromial bursa in a 2:1 ratio, under ultrasound guidance. Assessments of pain (VAS) and function (ASES) were performed at baseline, and 1, 3, 6 and 12 months post treatment.30 participants (19 randomised to ATI) with a mean age of 50.5 years (10 females) and a mean duration of symptoms of 23.5 months. Baseline VAS pain and ASES scores were comparable between groups. While mean VAS pain scores improved in both groups at 3 months after treatment, pain scores were superior with ATI at 6 months (p=0.01). Mean ASES scores in the ATI group were superior to the CS group at 3 months (p=0.026) and 6 months (p=0.012). Seven participants in the CS group withdrew prior to 12 months due to lack of improvement. At 12 months, mean VAS pain in the ATI group was 1.6 ± 1.3. The improvements in mean ASES scores in the ATI group at 6 and 12 months were greater than the MCID (12.0 points). At 12 months, 95% of ATI participants had an ASES score &gt; the PASS (patient acceptable symptom state).This is the first level one study using ATI to treat interstitial supraspinatus tear. ATI results in a significant reduction in pain and improvement in shoulder function.

A New Test for the Advanced Diagnosis of Lateral Elbow Tendinopathy with Concomitant Intrasubstance Tear: Failure to Resist Extension Effort (the Free Test).

Lateral elbow tendinopathy (LET) is one of the most common causes of musculoskeletal pain. The diagnosis is based on the clinical history and different physical maneuvers. Ultrasound (US) is a complementary diagnostic method to detect degenerative tendon changes and intrasubstance tears (IST). To date, there is no available physical maneuver to identify an IST in patients with LET. To evaluate the diagnostic accuracy of an index test to detect an IST confirmed by ultrasound in patients with LET. A diagnostic retrospective study was performed. Patients who presented medical records with LET were recruited. Two orthopaedic surgeons developed the physical maneuver. The index test was considered positive when the position failed to resist the wrist extension maximum effort. Clinical findings were associated with confirmation of IST by US. Data were calculated using diagnostic accuracy, sensitivity, and specificity with 95% confidence intervals. Thirty-nine patients (39 elbows) were analyzed, 25 (64%) women and 14 (36%) men, with an average age of 47.7 years. The index test's sensitivity was 0.86 (95% CI, 0.67-0.96). Accuracy was 0.79 (95% CI, 0.64-0.91), and the specificity was 0.64 (95% CI, 0.31-0.89). The index test presented very good sensitivity and good accuracy in patients with LET with US diagnostic confirmation of IST. Diagnostic study, Level III.

Lateral elbow tendinopathy and artificial intelligence: Binary and multilabel findings detection using machine learning algorithms.

BackgroundUltrasound (US) is a valuable technique to detect degenerative findings and intrasubstance tears in lateral elbow tendinopathy (LET). Machine learning methods allow supporting this radiological diagnosis.AimTo assess multilabel classification models using machine learning models to detect degenerative findings and intrasubstance tears in US images with LET diagnosis.Materials and methodsA retrospective study was performed. US images and medical records from patients with LET diagnosis from January 1st, 2017, to December 30th, 2018, were selected. Datasets were built for training and testing models. For image analysis, features extraction, texture characteristics, intensity distribution, pixel-pixel co-occurrence patterns, and scales granularity were implemented. Six different supervised learning models were implemented for binary and multilabel classification. All models were trained to classify four tendon findings (hypoechogenicity, neovascularity, enthesopathy, and intrasubstance tear). Accuracy indicators and their confidence intervals (CI) were obtained for all models following a K-fold-repeated-cross-validation method. To measure multilabel prediction, multilabel accuracy, sensitivity, specificity, and receiver operating characteristic (ROC) with 95% CI were used.ResultsA total of 30,007 US images (4,324 exams, 2,917 patients) were included in the analysis. The RF model presented the highest mean values in the area under the curve (AUC), sensitivity, and also specificity by each degenerative finding in the binary classification. The AUC and sensitivity showed the best performance in intrasubstance tear with 0.991 [95% CI, 099, 0.99], and 0.775 [95% CI, 0.77, 0.77], respectively. Instead, specificity showed upper values in hypoechogenicity with 0.821 [95% CI, 0.82, −0.82]. In the multilabel classifier, RF also presented the highest performance. The accuracy was 0.772 [95% CI, 0.771, 0.773], a great macro of 0.948 [95% CI, 0.94, 0.94], and a micro of 0.962 [95% CI, 0.96, 0.96] AUC scores were detected. Diagnostic accuracy, sensitivity, and specificity with 95% CI were calculated.ConclusionMachine learning algorithms based on US images with LET presented high diagnosis accuracy. Mainly the random forest model shows the best performance in binary and multilabel classifiers, particularly for intrasubstance tears.

Ultrasound findings in lateral elbow tendinopathy: A retrospective analysis of radiological tendon features

Background: Lateral elbow tendinopathy (LET) is prevalent in the upper extremity, with various therapeutic options. Understanding the types and the relations between the radiological tendon features would help to develop more specific treatments. This study reviewed ultrasound exams of LET to investigate the types of degenerative findings and the relationships between them in one of the most prominent sports medicine clinics in Latin America. Methods: A retrospective study was performed. We evaluated 4335 ultrasonographic exams with LET from 2017 and 2018. Five principal degenerative ultrasound criteria with subtypes were selected: hypoechogenicity, neovascularity, calcification, enthesopathy, and intrasubstance tear. A multiple linear regression model was conducted to explore the association between the findings, sex, and age. Results: Overall, 4324 ultrasound exams were analyzed; 2607 (60.29%) were males. Multiple degenerative tendon findings were found in adults (≥18 years) with LET. Hypoechogenicity (67.77%) and neovascularity (37.8%) were the most frequent. The mean length of a tendon tear in both sexes was 4.44 (± 2.81) millimeters. Mild hypoechogenicity (P &lt; .001), and depth intrasubstance tear (P &lt; .01) were statistically significant between them. Severe hypoechogenicity was associated with an increase in all tendon tear dimensions for length 1.37 ([95% Confidence interval (CI), 0.57, 2.17]; P &lt; .001), for width 1.10 ([95% CI, 0.33, 1.87]; P &lt; .01) and for depth 1.64 ([95% CI, 0.40, 2.88]; P &lt; .01). Additional findings associated with an increase in the length dimension were 0.42 associated with focal neovascularity ([95% CI, 0.19, 0.65]; P &lt; .001), and 0.71 associated with multiple neovascularity ([95% CI, 0.27, 1.15]; P &lt; .01). Conclusions: Hypoechogenicity and neovascularity findings presented a positive association with the size of tendon tear in patients with LET. This study reaffirms the increased predominance of tendon tear during the 4th to 6th decades of life.

Incidence of anterior tibial spine fracture among skiers does not differ with age.

Injury to the anterior cruciate ligament (ACL) is common in alpine skiing in the form of either an intra-substance ACL tear or anterior tibial spine fracture (ATSF). Anterior tibial spine fractures are typically reported in children. However, several case reports describe these injuries in adults while skiing. The purpose of this study is to describe the sport specific incidence of ATSF in alpine skiing. The study was conducted over a 22-year period. Skiers who suffered an ATSF were identified and radiographs were reviewed to confirm the diagnosis. Additionally, control data from intra-substance ACL injury groups were collected. The incidence of these injuries in children, adolescents, and adults (grouped as ages 0-10, 11-16, and 17 + years old, respectively) was evaluated and the risk factors for ATSF versus ACL tear were determined. There were 1688 intra-substance ACL and 51 ATSF injuries. The incidence of intra-substance ACL injury was greater in adults (40.0 per 100,000 skier days) compared to the adolescent (15.4 per 100,000) and child (1.1 per 100,000) age groups. In contrast, the incidence of ATSF was similar in the adult (0.9 per 100,000), adolescent (1.9 per 100,000), and child (1.9 per 100,000) age groups. Loose ski boot fit was identified as a risk factor for ATSF. The incidence of ATSF in alpine skiers is similar among all age groups. However, the incidence of intra-substance ACL injuries is far greater in adult skiers compared to adolescents and children. Risk factors for ATSF relate to compliance between the foot/ankle and the ski boot. III.

Shoulder Pain- Trampoline

HISTORY: A 10 year old female presented with left shoulder pain 1 week after she fell while attempting a handstand on a trampoline. She was seen in the ED on the day of injury where x-rays of her c-spine and entire left upper extremity were normal. She was diagnosed with a shoulder contusion and placed into a sling. Despite Motrin and Tylenol, she continued to complain of ongoing pain and was unable to raise her arm out of the sling. She denied numbness or weakness in the extremity but mom mentioned that her hand occasionally appeared mottled. PHYSICAL EXAM: Ecchymosis to the posterior aspect of her upper arm. Tender to palpate over the glenohumeral joint line. ROM diminished in all planes due to pain. Strength 5/5 IR, 4/5 ER. Absent radial pulse. Sensation intact. AIN/PIN intact. Normal exam of her c-spine, elbow and wrist. Her hand was pink and well perfused. DIFFERENTIAL DIAGNOSIS: 1) Arterial compromise 2) Fracture 3) MDI of shoulder4) Rotator cuff injury TESTS & RESULTS: MRI Left Shoulder: 1. High grade tear of the latissimus dorsi and teres major with avulsion of the teres major/latissimus dorsi tendon 2. Brachial artery cut off at the level of the humeral neck 3. Tear of IGHL 4. Myotendinous junction tear of the infraspinatous tendon with intrasubstance tear of the distal tendon 5. Humeral head contusion CTA: Abrupt cutoff of the brachial artery at the level of the proximal humerus. Appearance consistent with arterial injury with resultant thrombosis. FINAL/WORKING DIAGNOSIS: 1) Brachial artery thrombosis 2) Latissimus dorsi/teres major tendon tear. Tear of IGHL. TREATMENT & OUTCOMES: 1) Admitted to Hematology service for initiation of anticoagulation therapy- Enoxaparin 1 mg/kg BID for 3 months followed by ASA 81 mg for 9 months. 2) Serial US with Doppler of her LUE monitored monthly until resolution of her thrombus3) Managed non-operatively with close follow up with orthopedics, IR, hematology and plastic surgery services. 4) MRI shoulder with arthrogram completed 3 months following injury revealed healing of her IGHL tear without extravasation of contrast. Interval healing of previously seen teres major/latissimus dorsi tears. 5) Continues to progress in PT working to improve strength and motion.

VALUE OF CONVENTIONAL MAGNETIC RESONANCE IN DIAGNOSIS OF ROTATOR CUFF TEAR

Objective: To study on the value of conventional magnetic resonance imaging in the diagnosis of rotator cuff tear in comparison with surgery.Subjects and research methods: Cross-sectional descriptive study on 69 patients with rotator cuff lesions undergoing magnetic resonance imaging at Hanoi Medical University Hospital Departmentof Diagnostic Imaging, all patients have surgery after that.Results: Among the number of patients operated, the highest proportion was the complete tendon rupture group (accounting for 60.9%), followed by the full-thickness tear group (14.5%) and thearticular-surface tear group (14.5%). , the groups of synovial-surface tear, intrasubstance tear, simple tendinopathy accounted for the least percentage. Regarding post-operative comparison: For completetendon tear, the sensitivity of magnetic resonance is 100%, specificity is 95.7%; in full-thickness tear, the sensitivity and specificity of magnetic resonance were 100% and 98.7%. The sensitivityof conventional magnetic resonance in the diagnosis of partial tear such as articular-surface tears, synovial-surface tear is 50-60% and specificity is 74.9-98.7%.Conclusion: Routine magnetic resonance imaging is a valuable method in diagnosing rotator cuff tears. The sensitivity and specificity of magnetic resonance are high in the diagnosis of major tendon tears (complete and full-thickness tears) than in cases of partial tear (articular or synovial surface tear).

Consensus-based classification system for intra-operative management of labral tears during hip arthroscopy-aggregate recommendations from high-volume hip preservation surgeons.

The purpose of this study was to survey high-volume hip preservation surgeons regarding their perspectives on intra-operative management of labral tears to improve decision-making and produce an effective classification system. A cross-sectional survey of high-volume hip preservation surgeons was conducted in person and anonymously, using a questionnaire that is repeated for indications of labral debridement, repair and reconstruction given the torn labra are stable, unstable, viable or non-viable. Twenty-six high-volume arthroscopic hip surgeons participated in this survey. Provided the labrum was viable (torn tissue that is likely to heal) and stable, labral debridement would be performed by 76.92% of respondents for patients >40 years of age and by >84% of respondents for stable intra-substance labral tears in patients without dysplasia. If the labrum was viable but unstable, labral repair would be performed by >80% of respondents for patients ≤40 years of age and > 80% of respondents if the labral size was >3 mm and located anteriorly. Presence of calcified labra or the Os acetabuli mattered while deciding whether to repair a labrum. In non-viable (torn tissue that is unlikely to heal) and unstable labra, labral reconstruction would be performed by 84.62% of respondents if labral size was <3 mm. The majority of respondents would reconstruct calcified and non-viable, unstable labra that no longer maintained a suction seal. Surgeons performing arthroscopic hip labral treatment may utilize this comprehensive classification system, which takes into consideration patient age, labral characteristics (viability and stability) and bony morphology of the hip joint. When choosing between labral debridement, repair or reconstruction, consensus recommendations from high-volume hip preservation surgeons can enhance decision-making.

Prevalence and Grading of Rotator Cuff and Labral Injuries in Shoulder Pain and Instability using MRI: ACross-sectional Study

Introduction: Shoulder joint is a highly mobile joint but is prone for rotator cuff injuries and dislocations. It is necessary to accurately diagnose rotator cuff and labral injuries so that appropriate plan of action for treatment can be taken. Magnetic Resonance Imaging (MRI) can be used to diagnose and describe the extent of rotator cuff tendon and labral injuries and any secondary rotator cuff muscle abnormalities. Aim: To study the demographic profile of patients presenting with shoulder pain and instability, identify the various rotator cuff injuries causing shoulder pain, identify the rotator cuff interval lesions causing microinstability, identify the various labral and bony pathologies in instability, describe the MRI features of the rotator cuff, rotator cuff interval, labral and bony injuries. Materials and Methods: This study was a cross-sectional study of patients with symptoms of either shoulder pain or instability who underwent MRI evaluation of the shoulder in the Department of Radiodiagnosis, Rajarajeswari Medical College and Hospital, Bengaluru, Karnataka, India, from July 2018 to December 2020. The study population consisted of 54 patients with either shoulder pain or instability who underwent MRI of shoulder. All the MRI scans of the shoulder in this study were performed using 1.5 Tesla Siemens Magnetom Avanto (Tim 76x18) MR machine using a flex coil. Results: The study population consisted of 54 patients comprising of 38 males and 16 females. The age of the patients ranged from 20-77 years. Majority of the patients were older than 50 years constituting about 33.33% of the total study population. Rotator cuff injury was the commonest cause of pain. Tendinosis was the commonest type of rotator cuff injury followed by partial-thickness and full-thickness tendon tears. The commonest grade of tendinosis was mild or grade 1. Supraspinatus tendon was the most commonly affected tendon followed by subscapularis and infraspinatus tendons. Teres minor tendon was normal in all the cases. Anterior instability was the commonest type of instability with equal prevalence of soft tissue Bankart, bony Bankart and Perthes lesions. Biceps pulley lesions resulted in long head of biceps tendon instability, microinstability and internal impingement. Conclusion: Rotator cuff injuries are the commonest cause of shoulder pain and are seen more frequently after the fifth decade. Shoulder instability is most commonly seen in young male adults. Tendinosis is the commonest type of rotator cuff injury. Supraspinatus tendon is the most commonly injured tendon. Anterior instability is the commonest type of shoulder instability. Biceps pulley lesions result in long head of biceps tendon instability, microinstability and internal impingement. MRI can diagnose interstitial or intrasubstance tendon tears which are not visualised on arthroscopy. MRI description of tendon and labral tears, tendon retraction and muscle atrophy can guide the orthopaedician during arthroscopy and in treatmentplanning.

Histological incorporation of acellular dermal matrix in the failed superior capsule reconstruction of the shoulder

BackgroundSuperior capsule reconstruction addresses massive rotator cuff tears using allografts and aims to restore the natural superior constraint of the shoulder and therefore shoulder biomechanics and function. There is no evidence relating to the histological incorporation of these grafts.Methods27 superior capsule reconstructions were performed between June 2016 and November 2017. Follow-up was with clinical assessment and Magnetic Resonance Imaging, to identify graft failure. Reverse total shoulder replacement was offered for ruptured grafts and the graft was sent for histological analysis along with the footprint of graft attachment where possible.ResultsFive patients (18.5%) had evidence of graft failure, three of whom (11.1%) underwent revision procedures. Of the five ruptures, four failed at the glenoid insertion, and one was an intra-substance tear. Histological analysis showed extensive fibroblastic infiltration. The intra-substance tear showed some vascularity at the medial and lateral ends, and one of the glenoid pull-outs demonstrated micro-calcification and osteoid formation. There was no evidence of in-growth into the bone.DiscussionAn inflammatory response to the grafts was seen, with neo-vascularisation, and micro-calcification observed. These findings are from ruptured grafts, so may not represent the characteristics of those which have not ruptured. Further evidence from explanted intact grafts could be gained to improve our understanding of its incorporation.Level of evidenceLevel IV evidence

Functional outcome of posterior cruciate ligament avulsion treated with open reduction and internal fixation with cannulated cancellous screws using Burks and Schaffer approach

Introduction: Posterior cruciate ligament (PCL) is stronger and less vulnerable to injuries than its anterior counterpart. Injuries to the PCL, either due to bony avulsion or intra-substance tears, if left untreated, can result in chronic pain, patellar degenerative changes and instability. The basic approach to manage PCL bony avulsion varies from open reduction and internal fixation to arthroscopic fixation with screws or sutures. Although both the approaches have their pros and cons, in this study, we present the results of open reduction and internal fixation with cannulated cancellous screws. Material and Methods: The study group comprised of 18 patients (14 males and 4 females) with PCL avulsion injury between January 2013 to January 2018 who were operated at R L Jalappa hospital and followed up regularly with clinical and radiological assessment. The patient’s details and radiographs were collected from patient records in hospital medical record department. Patients were called for examination, and the functional and radiological status was noted. Functional assessment was done using Lysholm knee scoring system.Results: Mean age of the patients was 39.2 ranging from 21 – 55 years. 3 patients had associated femur shaft fractures, while 2 patients had tibia fracture. The mean Lysholm score was 92.6 (87-96). Clinically, no symptoms of instability were evident, and no signs of PCL deficiency were present. Full range of movements was achieved in all the patients at last follow-up.Conclusion: Posterior Cruciate Ligament avulsion treated with open reduction and internal fixation with cannulated cancellous screws using Burks and Schaffer approach gives excellent results with minimal morbidity.

Intrasubstance Anterior Cruciate Ligament Injuries in the Pediatric Population.

Pediatric intrasubstance anterior cruciate ligament (ACL) tears have a significant epidemiologic impact as their numbers continue to grow globally. This review focuses on true pediatric intrasubstance ACL tears, which occur >400,000 times annually. Modifiable and non-modifiable risk factors include intercondylar notch width, ACL size, gender, landing mechanisms, and hormonal variations. The proposed mechanisms of injury include anterior tibial shear and dynamic valgus collapse. ACL tears can be associated with soft tissue and chondral defects. History and physical examination are the most important parts of evaluation, including the Lachman test, which is considered the most accurate physical examination maneuver. Imaging studies should begin with AP and lateral radiographs, but magnetic resonance imaging is very useful in confirming the diagnosis and preoperative planning. ACL injury prevention programs targeting high risk populations have been proven to reduce the risk of injury, but lack uniformity across programs. Pediatric ACL injuries were conventionally treated nonoperatively, but recent data suggest that early operative intervention produces best long term outcomes pertaining to knee stability, meniscal tear risk, and return to previous level of play. Current techniques in ACL reconstruction, including more vertically oriented tunnels and physeal sparing techniques, have been described to reduce the risk of physeal arrest and limb angulation or deformity. Data consistently show that autograft is superior to allograft regarding failure rate. Mean durations of postoperative therapy and return to sport were 7 ± 3 and 10 ± 3 months, respectively. These patients have good functional outcomes compared to the general population yet are at increased risk of additional ACL injury. Attempts at primary ACL repair using biological scaffolds are under investigation.

Arthroscopic All-Inside Repair of Medial Meniscus Grade 2 Horizontal Cleavage Tear Using Additional Posteromedial Portal

Management of intrasubstance horizontal cleavage meniscal lesions of microtraumatic origin remains poorly defined in young patients. For grade 2 lesions resistant to conservative measures, the standard technique is debridement of the intrasubstance tear and open suture repair via a posteromedial approach. The objective of this Technical Note is to propose an arthroscopic alternative to this open technique, using an arthroscopic additional posteromedial portal. This technique facilitates an approach to the lesion via its peripheral portion without creating an iatrogenic lesion of the free edge of the meniscus, which is located in the white zone and thus exhibits limited vascularity.

A Novel Treatment for a Rare Injury: Pediatric Massive Intrasubstance Rotator Cuff and Periscapular Muscle Tears Treated with a Custom Brace: A Case Report.

A 9-year-old boy sustained intrasubstance tears of the rotator cuff and periscapular muscles due to a fall, resulting in scapular winging and severely decreased shoulder range of motion. Treatment consisted of a modified thoracolumbosacral orthosis (TLSO) with a shoulder immobilizer attachment (to reduce the scapula to the thoracic wall and hold the arm in 10° of abduction). The brace was worn for 8 weeks. The patient recovered full, pain-free shoulder function and range of motion, and returned to high-level athletics. Pediatric massive intrasubstance rotator cuff and periscapular muscle tears can be treated nonoperatively with use of a modified TLSO.