Arthroscopic osseous Bankart repair for chronic recurrent traumatic anterior glenohumeral instability

BACKGROUND: A chronic osseous Bankart lesion has traditionally been treated with soft-tissue repair and/or open bone-grafting for a large glenoid defect. We developed an arthroscopic method of osseous reconstruction of the glenoid without bone-grafting. The purpose of this study was to evaluate the postoperative outcomes of our technique for chronic recurrent traumatic anterior glenohumeral instability. METHODS: A consecutive series of forty-two shoulders in forty-one patients with chronic recurrent traumatic glenohumeral instability underwent an arthroscopic osseous Bankart repair. All shoulders were evaluated preoperatively with three-dimensionally reconstructed computed tomography, which confirmed an osseous fragment at the anteroinferior portion of the glenoid. The average bone loss in the glenoid was 24.8% (range, 11.4% to 38.6%), and the average fragment size was 9.2% (range, 2.1% to 20.9%) of the glenoid fossa. In all shoulders, a displaced osseous fragment, firmly attached to the labroligamentous complex, was separated from the glenoid neck before reduction and fixation in the optimal position with use of suture anchors. All patients were assessed with use of the scoring systems of Rowe et al. and the University of California at Los Angeles preoperatively and at the final evaluation. RESULTS: The mean duration of follow-up was thirty-four months. At that time, thirty-nine of the forty-two shoulders were rated as having a good or excellent result. The mean Rowe score improved from 33.6 points preoperatively to 94.3 points postoperatively (p < 0.01). The mean score on the University of California at Los Angeles system improved from 20.5 points preoperatively to 33.6 points at the final evaluation (p < 0.01). The average passive external rotation was 75 degrees with the arm at the side and 93 degrees with the arm at 90 degrees of abduction. Two patients had a reinjury. Eventually, thirty-five of thirty-seven patients who were active participants in sports returned to the sport they had played before the injury. CONCLUSIONS: Arthroscopic osseous Bankart repair with use of suture anchors yields a successful outcome even in shoulders with a chronic large glenoid defect.     

Surgical repair for recurrent anterior instability of the shoulder.

BACKGROUND: The outcome of surgical repair for recurrent anterior instability of the shoulder at the Wellington Hospital was reviewed. METHODS: A retrospective review was undertaken of patients undergoing surgical repair for recurrent anterior instability of the shoulder at Wellington Hospital between October 1989 and November 1996. Patients were asked to complete two shoulder-specific questionnaires, and the range of motion, stability, and strength was evaluated clinically. RESULTS: A total of 37 patients (38 shoulders) who had recurrent anterior dislocation of the shoulder that was unresponsive to a physician-directed rehabilitation programme were managed with open surgical repair. Procedures included the Putti-Platt, Bristow, Magnuson-Stack, Botychev, and Bankart repairs. The mean age at the time of surgery was 24 years and the male-to-female ratio was 11.3:1. Surgery was performed on the dominant side in 63.2% of shoulders. The postoperative redislocation rate was 39.4% at an average of 4.6 years follow-up. Three patients have since required revision of their surgical repair and one patient is awaiting revision. A total of 63.2% of patients were unable to return to their previous level of sports. Differences existed between the motion in the surgically treated shoulder when compared with the contralateral side. Patients reported the most functional difficulty in throwing, working overhead, pulling, and working at shoulder level. CONCLUSIONS: The results of the present study indicate a high redislocation rate, and highlight the challenges in restoring a stable, mobile, functional shoulder.     

Bankart repair for recurrent anterior glenohumeral instability: results at twenty-nine years' follow-up

The aim of the study was to evaluate the long-term results of the open surgical technique of Bankart repair for glenohumeral instability, a procedure that is still widely used. Thirty-nine patients were operated on at our institution by use of the Bankart technique for traumatic anterior glenohumeral instability. Thirty patients were reviewed, with a mean follow-up of 29.0 years (range, 20.3-41.0 years). After surgery, all patients recovered the pretraumatic level of sporting and professional activities. Three (ten percent) had recurrence of dislocation, one of whom underwent reoperation. Between surgery and review, 5 patients needed a total shoulder arthroplasty because of symptomatic osteoarthritis. Among the 25 remaining patients, 20 had a good subjective result, 4 had a fair result, and 1 had a poor result. The mean loss of external rotation was 24 degrees, and the mean loss of internal rotation was 19 degrees. Compared with the contralateral intact shoulder, the scores measured in the operative shoulder were significantly lower (13 points less for the Constant score, 19.8 points less for the Rowe score, and 1.4 points less for the American Shoulder and Elbow Surgeons score). As seen on the radiographs, there were some signs of osteoarthritis in 7 patients. Including the 5 patients who needed shoulder prosthetic replacement, the global rate of osteoarthritis of the study was 40%. All of the patients said that they would recommend this surgery. The Bankart technique, when used for traumatic anterior glenohumeral instability, gives reliable long-term results. However, it does not prevent the development of shoulder osteoarthritis.     

Glenoid rim morphology in recurrent anterior glenohumeral instability

BACKGROUND: Knowledge regarding the morphology of the glenoid rim is important when patients with recurrent anterior glenohumeral instability are assessed. Ordinary imaging techniques are not always sensitive enough to demonstrate the morphology of the glenoid rim accurately. We developed a method of three-dimensionally reconstructed computed tomography with elimination of the humeral head to evaluate glenoid morphology. The purpose of the present study was to quantify glenoid osseous defects and to define their characteristics in patients with recurrent anterior instability. METHODS: The morphology of the glenoid rim in 100 consecutive shoulders with recurrent unilateral anterior glenohumeral instability was evaluated on three-dimensionally reconstructed computed tomography images with the humeral head eliminated. The configuration of the glenoid rim was evaluated on both en face and oblique views. Concurrently, we also investigated seventy-five normal glenoids, including both glenoids in ten normal volunteers. Shoulders without an osseous fragment at the anteroinferior portion of the glenoid were compared with the contralateral shoulder in the same patient to determine if the glenoid morphology was normal. In shoulders with an osseous fragment, the fragment was evaluated quantitatively and its size was classified as large (>20% of the glenoid fossa), medium (5% to 20%), or small (<5%). Finally, all 100 shoulders were evaluated arthroscopically to confirm the presence of the lesion at the glenoid rim that had been identified with three-dimensionally reconstructed computed tomography. RESULTS: Investigation of the normal glenoids revealed no side-to-side differences. Investigation of the affected glenoids revealed an abnormal configuration in ninety shoulders. Fifty glenoids had an osseous fragment. One fragment was large (26.9% of the glenoid fossa), twenty-seven fragments were medium (10.6% of the glenoid fossa, on the average), and twenty-two were small (2.9% of the glenoid fossa, on the average). In the forty shoulders without an osseous fragment, the anteroinferior portion of the glenoid appeared straight on the en face view and it appeared obtuse or slightly rounded, compared with the normally sharp contour of the normal glenoid rim, on the oblique view, suggesting erosion or a mild compression fracture at this site. Arthroscopic investigation revealed a Bankart lesion in ninety-seven of the 100 shoulders and an osseous fragment in forty-five of the fifty shoulders in which an osseous Bankart lesion had been identified with the three-dimensionally reconstructed computed tomography. In the shoulders with distinctly abnormal morphology on three-dimensionally reconstructed computed tomography, the arthroscopic appearance of the anteroinferior portion of the glenoid rim was compatible with the appearance demonstrated by the three-dimensionally reconstructed computed tomography. CONCLUSIONS: We introduced a method to evaluate the morphology of the glenoid rim and to quantify the osseous defect in a simple and practical manner with three-dimensionally reconstructed computed tomography with elimination of the humeral head. Fifty percent of the shoulders with recurrent anterior glenohumeral instability had an osseous Bankart lesion; 40% did not have an osseous fragment but demonstrated loss of the normal circular configuration on the en face view and an obtuse contour on the oblique view, suggesting erosion or compression of the glenoid rim.     

Arthroscopic staple capsulorrhaphy for recurrent anterior shoulder instability

Beginning in 1983, the principles of staple capsulorrhaphy of the shoulder utilizing arthroscopic techniques were applied to the treatment of patients with recurrent anterior shoulder instability. This paper describes the results of arthroscopic staple capsulorrhaphy of the shoulder in the first 25 consecutive cases in which these techniques were utilized. The patient population includes 4 females and 19 males, 2 of whom underwent bilateral staged procedures. Eleven of the patients had documented recurrent anterior dislocations while the remaining 12 patients were determined to have subluxation of the shoulder. The average age of the patient population was 23 years. Follow-up averaged 36 months. Results were determined by utilizing a strict 100 point rating scale as described by Rowe. Utilizing this scale, 67% of patients achieved good or excellent results. Five patients came to undergo additional surgical procedures. There were no complications of infection or neurovascular injury, but one patient suffered staple impingement upon the humeral head leading to excoriation thereof and secondary pain. An average loss of external rotation of 9 degrees, as compared to the contralateral shoulder, was noted postoperatively.     

Shoulder arthroplasty for advanced glenohumeral arthritis after anterior instability repair

We retrospectively reviewed 19 patients (19 shoulders) in whom advanced glenohumeral arthritis developed after anterior instability repair. The anterior instability repairs included 4 Bristow, 4 Putti-Platt (2 in combination with other procedures), 4 Magnuson-Stack, 2 Bankart, and 5 other anterior capsulorrhaphies. Seventeen of the shoulders were treated with arthroplasty: 15 with total shoulder replacement and 2 with humeral head replacement, at a mean age of 45 years (range, 32-69 years). Two patients did not have surgical treatment. The mean internal rotation contracture was 58 degrees (15 degrees -125 degrees ). Eleven patients (65%) required subscapularis lengthening and anterior capsular release to correct a severe internal rotation contracture. Three (18%) had glenoid bone grafting, and one had glenoidplasty to correct severe posterior glenoid wear. The results were evaluated after a mean follow-up of 62 months (range, 24-167 months). Arthroplasty reduced the level of pain in 16 cases (94%). Active forward elevation increased 21 degrees to 120 degrees, active external rotation increased 38 degrees to 41 degrees, and passive internal rotation increased a mean of 3 vertebral levels to T12. There was improvement in functional use of the upper extremity in all cases except one. Subjectively, 12 shoulders were rated as much better, 4 as better, and 1 as worse than preoperatively. Three underwent revision arthroplasty procedures. Advanced glenohumeral arthritis is a rarely reported late sequela of anterior instability surgery. It is more common after nonanatomic repairs, presents in patients at younger ages than typical glenohumeral osteoarthritis, and is characterized by severe internal rotation contracture and posterior glenoid wear. Prosthetic arthroplasty, although technically challenging, effectively reduced pain and improved function in our series.     

关节镜下非打结型与打结型缝合锚钉Bankart重建治疗复发性肩关节前向不稳

目的探讨关节镜下非打结型与打结型缝合锚钉对复发性肩关节前向不稳Bankart损伤的临床效果。方法回顾性分析2006年3月至2009年1月广州军区广州总医院收治的44例复发性肩关节脱位Bankart损伤患者的临床资料,根据关节镜下修复方式的不同分为非打结组（可吸收非打结型缝合锚钉修复,20例）和打结组（打结型缝合锚钉修复,24例）。采用美国肩肘外科医师（ASES）评分及Constant-Murley功能评分对患者术前、末次随访时肩关节功能进行评估,记录肩关节活动范围,观察并发症发生情况。结果所有患者获得随访,随访时间20～46个月,平均随访时间30个月。非打结组术前和终末随访时肩关节前屈上举角度、外展90°时外旋角度分别为（163±9）°和（170±4）°、（58±14）°和（90±6）°,术后外展90°时患侧外旋角度较健侧受限（8±6）°;术前和终末随访时ASES评分、Constant-Murley评分分别为（77.4±3.7）分和（94.3±2.6）分、（78.1±4.6）分和（93.9±3.7）分,两者比较,差异有统计学意义（P〈0.05）。打结组术前和终末随访时肩关节前屈上举角度、外展90°时外旋角度分别为（162±8）°和（170±6）°、（61±13）°和（91±6）°,术后外展90°时患侧外旋角度较健侧受限（5±3）°;术前和终末随访时ASES评分、Constant-Murley评分分别为（75.8±2.9）分和（95.1±3.7）分、（76.2±5.9）分和（92.8±5.2）分,两者比较,差异有统计学意义（P〈0.05）。两组间术前、术后各项指标比较,差异无统计学意义（P〉0.05）。患者均未出现术后再脱位,均重返伤前工作岗位。结论肩关节镜下Bankart重建手术是治疗复发性肩关节前向不稳的有效方法,非打结型和打结型缝合锚钉修复Bankart损伤疗效相似。     

Revision arthroscopic capsulolabral reconstruction for recurrent instability of the shoulder

We have investigated the outcome of arthroscopic revision surgery for recurrent instability of the shoulder after failed primary anterior stabilisation. We identified 40 patients with failed primary open or arthroscopic anterior stabilisation of the shoulder who had been treated by revision arthroscopic capsulolabral reconstruction and followed up for a mean of 36 months (12 to 87). There were 34 men and six women with a mean age of 33.1 years (15 to 48). Details of the patients, the technique of the primary procedure, the operative findings at revision and the clinical outcome were evaluated by reviewing the medical records, physical examination and the use of the Western Ontario shoulder instability index score, the American Shoulder and Elbow Surgeons score and the health status questionnaire 12. Recurrent instability persisted in four patients after the revision arthroscopic procedure. At the final follow-up, the mean American Shoulder and Elbow Surgeons score was 81.1 (17.5 to 99.5) and the mean Western Ontario shoulder instability index score was 68.2 (20 to 98.2). Quality-of-life scoring showed good to excellent results in most patients. Arthroscopic revision capsulolabral reconstruction can provide a satisfactory outcome in selected patients for recurrent instability of the shoulder provided that no large Hill-Sachs lesion is present.     

Anatomy and function of the glenohumeral ligaments in anterior shoulder instability

The anatomy of the glenohumeral ligaments has been shown to be complex and variable and their function is highly dependent on the position of the humerus with respect to the glenoid. The superior glenohumeral ligament with the coracohumeral ligament was shown to be an important stabilizer in the inferior direction, even though the coracohumeral ligament is much more robust than the superior glenohumeral ligament. The middle glenohumeral ligament provides anterior stability at 45 degrees and 60 degrees abduction whereas the inferior glenohumeral ligament complex is the most important stabilizer against anteroinferior shoulder dislocation. Therefore, this component of the capsule is the most frequently injured structure. An appropriate surgical procedure to repair the inferior glenohumeral ligament complex after shoulder dislocation must be considered. In addition, a detached labrum can lead to recurrent anterior instability and a compromised inferior glenohumeral ligament complex. However, additional capsular injury usually is necessary to allow anterior dislocation.     

Arthroscopic repair of anterior glenohumeral instability and rotator interval lesions

As the techniques and instrumentation for shoulder arthroscopy continue to improve and evolve, its role in the treatment of anterior shoulder instability progresses also. With more surgeons becoming familiar with these advancements and techniques, arthroscopic stabilization results continue to improve and help arthroscopy become the "preferred method" for the treatment of shoulder instability. Adjunct procedures such as closure of the rotator interval also are helping to improve our arthroscopic results and are an important improvement in our understanding of the pathoanatomy of shoulder instability repairs.     

Recent advances in arthroscopic repair of traumatic anterior glenohumeral instability

Traumatic anterior instability is the most common type of glenohumeral instability. Although surgical treatment with an open technique has produced excellent results, there has been a trend toward arthroscopic treatment. As understanding of instability advances along with improvements in surgical techniques and instrumentation, arthroscopic results are fast approaching those seen with open procedures. Studies done at the authors' institution showed a 97% satisfactory outcome at short-term followup with 93% stable shoulders in a patient population with high physical demands. Others recently reported similar results. As more surgeons become familiar with the techniques, it is thought that arthroscopic Bankart reconstructions will be the preferred method in the future.     

The Trillat procedure for recurrent anterior instability of the shoulder

In the Trillat procedure for recurrent anterior instability of the shoulder the coracoid process is osteotomised and tilted downward to act as a bone block, and a screw is used to fix it and the Bankart lesion to the anterior scapular neck. We reviewed 52 cases after a mean follow-up of 69 months. Results in 73% of shoulders were excellent, 10% were good, 7% fair and 10% poor. Dislocation recurred in 4%, but a positive apprehension sign was present in 10 other shoulders. Some degenerative changes were seen in 62% of shoulders, a complication known to be associated with bone-block procedures. The most important reason for loss of lateral rotation was iatrogenic impingement of the coracoid. This frequent and potentially serious complication can also cause posterior subluxation of the humeral head and osteoarthritis.     

Reasons for failure after surgical repair of anterior shoulder instability

A total of 41 patients presenting with recurrent anterior instability of the shoulder after surgical repair were followed up after a mean period of 49 months (range, 24-81 months). The failed procedures were arthroscopic Bankart repair in 25 cases, open Bankart repair in 6 cases, Eden-Hybinette procedure in 4 cases, rotational osteotomy in 2 cases, capsular T- shift operation in 1 case, Bristow-Latarjet in one case, and a J-bone graft procedure in one case. In one case the index procedure was unknown. At revision surgery, the findings were a defect of the anterior bony glenoid rim in 23 patients (56%), a large capsule in 9 (22%), and a laterally torn capsule in 2 (5%). In 7 patients (17%) a typical Bankart lesion with good capsule quality was found. At revision surgery, these lesions were addressed by a bone graft procedure in 21 cases and fixation of the rim fragment with screws in 2 cases. In the 9 patients with a large capsule, a T-shift operation was performed in 6 and a Bankart repair with capsulorrhaphy was performed in the remaining 3. In the 7 patients with a typical Bankart lesion, a Bankart repair was performed, and in the 2 patients with a laterally torn capsule, an open suturing technique was used. At follow-up, none of the patients had had further redislocation or subluxation. The Rowe score was excellent in 81% of the cases and good in 19%. In 19 patients (46%) no increase in arthritic change was detected on radiographic assessment at follow-up, whereas 13 (32%) showed an increase of 1 degree and 4 (10%) showed an increase of 2 degrees. The results show that good and very good outcomes can be achieved with surgical repair provided that the basic pathology of the unstable shoulder is taken into account.     

Humeral avulsion of glenohumeral ligaments as a cause of anterior shoulder instability

The avulsion of the glenohumeral ligament labral complex at the glenoid (Bankart lesion), as well as ligamentous laxity are well known causes of anterior shoulder instability. A lesser known entity, the humeral avulsion of glenohumeral ligaments (HAGL), was studied to determine its incidence and its role in anterior glenohumeral instability. Sixty-four shoulders with the diagnosis of anterior instability were prospectively evaluated by arthroscopy for intraarticular pathology, including Bankart, capsular laxity, and HAGL lesions. Six shoulders were found to have HAGL lesions (9.3%), 11 shoulders with generalized capsular laxity (17.2%), and 47 shoulders with Bankart lesions (73.5%). In patients with documented anterior instability without a demonstratable “primary” Bankart lesion, a HAGL lesion should be ruled out. This lesion is readily recognized arthroscopically, and an appropriate repair of this lesion can restore anterior stability to the patient. The pathological anatomy of the HAGL lesion and our treatment of this lesion is discussed.     

Arthroscopic treatment of recurrent anterior shoulder instability with augmentation

Chronic anterior shoulder instability was found in cases with little soft tissue on the anterior portion of the joint, especially the anterior bundle of the inferior glenohumeral ligament (AIGHL) complex. Low volume and quality of the AIGHL complex tissue can lead to limitation of external rotation and difficulties to return to activities of daily living and overhead throwing sports. A new approach for the augmentation of chronic Bankart repair was developed for these cases based on a pilot study using polyglycolic acid sheets (PGA sheet). Favorable functional results without recurrence were obtained using the PGA sheet for augmentation of the AIHGL complex without any side effects. A long-term follow-up is necessary.