Static posterior subluxation of the humeral head: an unrecognized entity responsible for glenohumeral osteoarthritis in the young adult

Thirteen men with a mean age of 40 years had glenohumeral arthritis and symptoms of stiffness, pain, and locking of the joint at presentation. Provocative test results for anterior or posterior instability were negative. Computed tomography detected posterior humeral head subluxation relative to the glenoid and posterior cartilage wear. All patients demonstrated this posterior subluxation in the absence of posterior glenoid erosion. The mean glenoid retroversion was increased (14.5 degrees ). Increased glenoid retroversion was observed in the contralateral shoulder in 4 cases, and marked static posterior subluxation was noted in the contralateral shoulder in 3 cases. Various surgical procedures were performed in 5 patients to correct this arthrogenic posterior subluxation. Patients who underwent surgery were reviewed at a mean follow-up of 46 months with physical examination and computed tomography. The patients with the longer follow-up showed a progression of arthritis, and all cases showed persistent or recurrent posterior humeral subluxation. Glenohumeral arthritis with static posterior subluxation of the humeral head in the young adult could be the first stage of primary glenohumeral arthritis, predating signs of posterior glenoid erosion. Our attempts to correct this static posterior subluxation failed.     

Arthroskopischer Korakoidtransfer

Recurrent anterior shoulder instability is a frequent and severe problem for patients. The Bankart operation with reconstruction of the labrum, capsule and ligament is the established treatment method, which is usually performed arthroscopically. However, the results of the Bankart operation deteriorate if there is significant bone loss at the glenoid or humerus and also when there is structural damage to the anteroinferior glenohumeral ligament and labrum. In 1954 Latarjet described the technique of coracoid transfer to the anterior glenoid. This procedure has become popular for the treatment of anterior shoulder instability especially in France and is performed in an open technique.In this paper we describe the indications, operative technique and early results of coracoid transfer in a completely arthroscopic technique.     

Oxyphenbutazone (Tanderil®) in Surgery for Herniated Discs: A Double Blind Trial

Background and purpose In detection of glenoid labrum pathology, MR arthrography (MRA) has shown sensitivities of 88-100% and specificities of 89-93%. However, our practice suggested that there may be a higher frequency of falsely negative reports. We assessed the accuracy of this costly modality in practice.

Patients and methods We retrospectively reviewed MRA reports of 90 consecutive patients with clinical shoulder instability who had undergone shoulder arthroscopy. All had a history of traumatic anterior shoulder dislocation and had positive anterior apprehension tests. All underwent arthroscopy and stabilization during the same procedure. We compared the findings, using arthroscopic findings as the gold standard in the identification of glenoid labrum pathology.

Results 83 of the 90 patients had glenoid labrum tears at arthroscopy. Only 54 were correctly identified at MRA. All normal glenoid labra were identified at MRA. This gave a sensitivity of 65% and a specificity of 100% in identification of all types of glenoid labrum tear. 74 patients had anterior glenoid labral tears that were detected at an even lower rate of sensitivity (58%).

Interpretation The sensitivity of MRA in this series was substantially lower than previously published, suggesting that MRA may not be as reliable a diagnostic imaging modality in glenohumeral instability as previously thought. Our findings highlight the importance of an accurate history and clinical examination in the management of glenohumeral instability. The need for MRA may not be as high as is currently believed.     

Arthroscopic treatment of posterior glenohumeral joint subluxation resulting from brachial plexus birth palsy

The purpose of this study is to assess the ability of arthroscopic anterior capsular release, subscapularis tenotomy, and glenohumeral manipulation to reduce glenohumeral joint subluxation resulting from brachial plexus birth palsy. Twenty-two children with a mean age of 3.9 years (range, 1.6-8.3 years) underwent preoperative magnetic resonance imaging, arthroscopic surgery with or without tendon transfers, and postoperative imaging in their spica cast. In the uninvolved shoulders, the mean percentage of the humeral head anterior to the middle of the glenoid fossa (PHHA) was 45.2% +/- 4.8% and the mean glenoid version was -7% +/- 3%. In the involved shoulders, preoperatively, the mean PHHA was 15.6% +/- 13.5% and the mean glenoid version was -37 degrees +/- 15 degrees . Postoperatively, the mean PHHA corrected to 46.9% +/- 11.2% and the mean glenoid version improved to -8 degrees +/- 8 degrees . There was a significant improvement in the mean PHHA (P < .001) and mean glenoid version (P < .001) that approached the values of the uninvolved shoulder. Arthroscopic capsular release and subscapularis tenotomy were successful in obtaining reduction of glenohumeral joint subluxation in all patients. The maintenance of reduction requires continued follow-up over time.     

Arthroskopische Schulterstabilisierung mittels Fadenankern unter besonderer Berücksichtigung des tiefen anterior-inferioren Zugangs (5:30 Uhr)

OBJECTIVE: Arthroscopic (re)stabilization of the unstable shoulder by anatomic refixation of the detached capsulolabral complex with suture anchors or reduction of excessive capsule volume by capsule plication. INDICATIONS: Any type of shoulder instability (anterior, posterior, inferior, or multidirectional instability). Revision stabilization (even after primary open stabilization). Bone defects affecting < 25% of the glenoid surface. Lesions of the superior biceps tendon anchor complex (SLAP lesion). CONTRAINDICATIONS: Preexisting bone defects of the glenoid affecting > 25% of the glenoid surface. "Engaging" Hill-Sachs defects: osseous defects of the humeral head that engage with the anterior glenoid rim in extreme external rotation/abduction and consequently lead to shoulder dislocation. Bone-related etiology, e. g., clearly increased glenoid retroversion/anteversion or glenoid dysplasias (e. g., inverse pear shape). Voluntary shoulder dislocation in young patients until the end of the growth period. SURGICAL TECHNIQUE: Diagnostic arthroscopy and additional procedures based on clinical and intraoperative findings. For anterior-inferior instability, an anterior-superior approach is made with mobilization of the labrum and decortication of the glenoid. Creation of deep anterior-inferior portal and insertion of the anchors in 5.30, 4.30 and 3.00 o'clock position. The sutures are pulled through the capsulolabral complex and tied arthroscopically. Reconstruction of the inferior glenohumeral ligament is especially important. Lesions of the superior biceps tendon anchor and/or posterior labrum detachment can be treated by the same technique. Capsule plication with PDS sutures can be performed to decrease a large rotator interval or excessive capsule volume. The range of motion at the shoulder is limited for 6 weeks postoperatively (depending on the initial direction of the instability). RESULTS: At the authors' hospital over 600 arthroscopic shoulder stabilizations using the deep anterior-inferior portal have been completed so far. The redislocation rate for the first 147 patients (average follow-up of 3 years) treated with the technique described here is 6.1% and is slightly higher for arthroscopic revision stabilizations (n=43; of these, redislocation n=3 and reinstability n=3). There were no instances of axillary nerve lesion.     

Combined arthroscopic-open procedure for the recurrent shoulder dislocation in a 74-year-old man with an irreparable massive rotator cuff tear and a large Hill-Sachs lesion

Large, engaging Hill-Sachs lesions can be one of causes for recurrent glenohumeral instability after initial anterior shoulder dislocation or Bankart repair for the torn anteroinferior labrum. However, there have been relatively few articles describing specific treatments for the humeral head defects. This article described a case of an alternative treatment for large Hill-Sachs lesion using the corticocancellous iliac autograft. The authors present a case of recurrent anterior shoulder dislocation, with a large humeral head defects, and an irreparable massive rotator cuff tear in a 74-year-old man. The size of this Hill-Sachs lesion was 2.7 × 2 cm with a depth of 1.2 cm. After arthroscopic anterior capsulolabral repair, a 3 × 2 cm semicircular graft was harvested from the inner table of anterior iliac crest, trimmed, and transplanted to the humeral defect by cancellous screw fixation. At his 2-year follow-up, the patient remained free of dislocation and apprehension. We recommend this technique as an alternative method for symptomatic patients with engaging Hill-Sachs lesion.     

The Hill-Sachs lesion: diagnosis, classification, and management

The Hill-Sachs lesion is an osseous defect of the humeral head that is typically associated with anterior shoulder instability. The incidence of these lesions in the setting of glenohumeral instability is relatively high and approaches 100% in persons with recurrent anterior shoulder instability. Reverse Hill-Sachs lesion has been described in patients with posterior shoulder instability. Glenoid bone loss is typically associated with the Hill-Sachs lesion in patients with recurrent anterior shoulder instability. The lesion is a bipolar injury, and identification of concomitant glenoid bone loss is essential to optimize clinical outcome. Other pathology (eg, Bankart tear, labral or capsular injuries) must be identified, as well. Treatment is dictated by subjective and objective findings of shoulder instability and radiographic findings. Nonsurgical management, including focused rehabilitation, is acceptable in cases of small bony defects and nonengaging lesions in which the glenohumeral joint remains stable during desired activities. Surgical options include arthroscopic and open techniques.     

The role of the supraspinatus and infraspinatus muscles in glenohumeral kinematics of anterior should instability

To investigate a socket mechanism responsible for controlling the kinematics in the statically positioned glenohumeral joint, a suprascapular nerve block was performed in 13 selected patients, with recurrent anterior instability and defects of the labrum. Kinematics were then documented by roentgenograms in four positions within the horizontal motion plane. Combined paralysis of the supraspinatus and infraspinatus muscles resulted in abnormal anterior translation in only two of 47 roentgenograms. Normal ball-and-socket kinematics were retained in the remaining 45 roentgenograms. The consistent arthroscopic findings were an undamaged glenoid articular surface with a detached or absent labrum. The injury to the labrum reduced the depth of the socket by one-half. The other one-half of the socket provided by the contour of the glenoid remained intact. A balanced muscle envelope was not required to maintain normal kinematics in selected, actively positioned, unstable shoulders. The retained glenoid depth was sufficient to produce the observed ball-and-socket kinematics. Further in vivo study of shoulder kinematics will be needed to clarify the interactive roles of the socket and muscle envelope in maintaining glenohumeral stability during the more demanding stresses during active shoulder motion.     

关节镜下手术治疗创伤性肩关节前不稳定

目的探讨关节镜下手术治疗创伤性肩关节前不稳定的治疗原则、操作要点以及临床效果。方法2002年9月至2005年5月,本组患者18例,其中运动伤12例,工伤5例,交通伤1例。受伤至就诊时间平均15周。临床表现为肩痛18例,肩活动受限15例。前惧痛征(apprehension)阳性18例;肱二头肌牵拉征(speed)阳性5例;X线出现Hill-Satchs征3例。气-碘双重对比造影CTⅠ度1例,Ⅱ度15例,Ⅲ度2例。手术情况镜下见前盂唇撕脱18例,前关节囊松弛4例,合并上方盂唇撕裂(SLAP损伤)4例,游离体3例,盂唇骨赘形成2例,肱骨头、肩胛盂软骨剥脱2例;分别给予关节镜下前盂唇缝合锚钉固定(18例),前关节囊松弛紧缩术(3例),肱二头肌腱刨削(2例),关节囊外重新附着固定(2例),上盂唇缝合(3例),刨削(1例)等处理。术前UCLA肩关节评分(14±3)分。结果18例患者平均随访18个月(10~32个月)。所有患者肩部疼痛消失。1例于剧烈活动后肩部酸困感。肩部活动受限3例,其中后伸受限10°1例,肩外旋受限2例(<20°),前惧痛征1例有轻度不适,余体征均为阴性。所有患者恢复原工作、运动。术后UCLA肩关节评分(32±5)分,与术前比较差异有统计学意义(t=14.081,P<0.01)。结论关节镜下治疗创伤性肩关节前不稳定可取得良好效果。熟练操作技术,准确判定前盂唇充分松解及复位、固定,并正确处理合并损伤十分重要。带线锚钉固定前盂唇可靠,操作简便。     

The roentgenographic evaluation of anterior shoulder instability

Retrospective evaluations of roentgenograms of 83 patients with unilateral shoulder instability were surveyed to evaluate the usefulness of various radiographic projections and to correlate the information with the osseous pathology associated with prior glenohumeral dislocation. The Hill-Sachs and the osseous Bankart defects were considered pathognomonic radiographic signs of glenohumeral joint instability. Based on history, physical examination, and examination under general anesthesia, patients were divided into three categories--(1) dislocation group, (2) subluxation group, and (3) combination group. Roentgen projections evaluated included the anteroposterior view with the humerus in internal and external rotation, axillary view, West Point view, Stryker notch, and Didiee view. The Hill-Sachs defect on the posterolateral aspect of the humeral head was best demonstrated on the combination of an internal rotation and a Stryker notch view. The osseous Bankart defect on the anteroinferior glenoid rim was best documented on the Didiee and West Point views. The external rotation and axillary view did not add significantly to the preoperative radiographic findings. In a patient with an unstable shoulder, a radiographic series that includes an internal rotation, a Stryker notch view, and either a West Point or a Didiee view would maximize the diagnostic yield per radiographic cost, time, and exposure.     

Glenoid Avulsion of the Glenohumeral Ligaments as a Cause of Recurrent Anterior Shoulder Instability

Although the Bankart lesion is accepted as the primary pathology responsible for recurrent shoulder instability, recognition of other soft-tissue lesions has improved the surgical treatment for this common problem. Whereas humeral avulsion of the glenohumeral ligaments has been acknowledged as a cause of anterior shoulder instability, we have not found any reported cases of glenoid avulsion of the glenohumeral ligaments. We describe 3 cases of recurrent anterior shoulder instability due to glenoid avulsion of the glenohumeral ligaments. The avulsed ligaments were repaired to the labrum and glenoid, restoring the glenohumeral ligament–labral complex.     

Magnetic resonance imaging and clinical findings before and after tendon transfers about the shoulder in children with residual brachial plexus birth palsy

The purpose of this study was to assess the magnetic resonance imaging (MRI) and clinical outcome after tendon transfers about the shoulder in children with residual brachial plexus birth palsy. Twenty-three children with an average age at surgery of 5.3 +/- 1.7 years underwent transfer of the latissimus dorsi and teres major to the posterior rotator cuff with or without concomitant musculotendinous lengthenings. Preoperative MRI revealed glenoid retroversion measuring -25.3 +/- 14.3 degrees and only 29.5 +/- 15.5% percent of humeral head anterior to the middle of the glenoid. Clinical evaluation showed significant improvements in external rotation and abduction. Postoperative MRI 1 year after surgery revealed no change in glenoid retroversion (-24.5 +/- 14.2) or percent of humeral head anterior to the middle of the glenoid (28.4 +/- 14.9%). These results demonstrate that tendon transfers improve overall shoulder motion but do not reduce humeral head subluxation or enhance glenohumeral joint realignment.     

Functional anatomy of the long head of biceps brachii--a comparative study between normal and torn rotator cuff shoulders in cadaver specimens

In order to clarify the function of the tendinous portion of the long head of biceps brachii, intra-articular lesions of the glenoid labrum and the bicipital long head were investigated on 100 shoulder joints in 50 cadavers. From the point of anatomical features, the glenoid cavity is deepened and widened by the glenoid labrum, and the bicipital long head, which arises from the superior glenoid labrum, covers the humeral head anterosuperiorly and stabilizes the humeral head in the glenoid cavity. The pathological changes of the glenoid labrum with cuff tear (46 joints) included hypertrophy, fraying and erosion, while the bicipital long head was widened and flattened. These pathological changes progressed in company with the extension of the cuff tear. From these results, it is concluded that the intra-articular elements, such as the glenoid labrum and the bicipital long tendon play significant roles as glenohumeral stabilizers.     

External rotation humeral osteotomy for brachial plexus birth palsy

In patients with brachial plexus birth palsy, persistent muscular imbalance across the developing shoulder results in progressive glenohumeral dysplasia, characterized by increased glenoid retroversion, humeral head flattening, and posterior subluxation of the humeral head. Soft-tissue procedures-such as tendon transfers and musculotendinous lengthenings--will provide limited functional improvements in the setting of advanced glenohumeral deformity. For patients with internal rotation contracture and external rotation weakness associated with severe glenohumeral dysplasia, external rotation osteotomy of the humerus may be used to improve global shoulder function. The purpose of this article is to review the history, indications, and surgical technique of external rotation humeral osteotomy for patients with brachial plexus birth palsy.     

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.     

骨性缺损对肩关节稳定性影响的研究

目的探讨肩关节骨性缺损对关节稳定性的影响,为临床提供理论依据。方法分别制作肩胛盂及肱骨头缺损模型并逐渐增加缺损程度;以盂肱关节旋转中立位、60°外展位为起始位置,逐渐增加外旋角度至盂肱关节脱位,测量脱位发生前肱骨头前移距离;保持盂肱关节外展60°,分别在旋转中立位及外旋60°位时增加轴向应力,直至盂肱关节脱位,测量脱位前肱骨头的应力强度变化。结果随着肩胛盂及肱骨头缺损程度增加,外旋角度增加,肩关节稳定性下降,肱骨头位移不断增大,各组间呈显著性差异(P<0.01);盂肱关节外展60°、旋转中立位时,肱骨头应力强度随着骨缺损增大而不断增大,正常应力强度从1.68 Mpa迅速增加至4.62 Mpa,各组间呈显著性差异(P<0.01);盂肱关节外展60°、外旋60°时,正常应力强度为1.94 Mpa,骨缺损时迅速增加至6.65 Mpa,各组间呈显著性差异(P<0.01);肩关节不同缺损时,其接触力学特性证实了对肩关节稳定性有较大的影响,肩关节不稳定现象十分突出。结论随着肩胛盂及肱骨头缺损范围的增大,肩关节稳定性不断下降,肱骨头位移和应力强度不断增加,以致发生提前脱位。     

Magnetic resonance imaging evaluation of the inferior glenohumeral ligament: non-arthrographic imaging in abduction and external rotation

The anterior band of the inferior glenohumeral ligament is the most important restraint for preventing traumatic anterior glenohumeral instability. The condition of this ligament markedly affects the results of arthroscopic Bankart repair. We compared non-arthrographic magnetic resonance imaging (MRI) in abduction and external rotation and arthroscopic findings of the ligament in 51 shoulders with traumatic anterior glenohumeral instability. The condition of the ligament was evaluated based on the presence of a thick low-signal band between the anterior labrum and the head of the humerus in all magnetic resonance images obtained from the 3- to 5-o'clock position of the glenoid rim (right shoulder). The sensitivity and specificity of the MRI evaluation were 94% and 82%, respectively. MRI in abduction and external rotation is fairly useful for predicting the condition of the ligament in advance of invasive measures (ie, arthroscopy).     

Editorial Commentary: Recurrence After Arthroscopic Bankart Repair: What the Instability Severity Index Score Will and Will Not Predict

The recurrence of shoulder instability is a challenging complication after anterior open or arthroscopic stabilization in patients with glenohumeral instability. Use of the arthroscopic Bankart procedure has increased over the last decade, because of its less invasiveness and low complication rates compared with the Latarjet procedure. However, arthroscopic repair has the possibility of a greater recurrent instability rate. The Instability Shoulder Index Score (ISIS) has been developed to predict the success of isolated arthroscopic Bankart repair for the management of recurrent anterior shoulder instability. The risk factors associated with the recurrence of instability are age, level and type of sports participation, shoulder hyperlaxity, and humeral and glenoid bony lesions. The ISIS is a validated tool to predict the recurrence of dislocation after arthroscopic surgery in patients with shoulder instability. The arthroscopic Bankart procedure can be performed in patients with ISIS ≤3 with a low risk of recurrence of glenohumeral instability. The Latarjet procedure should be recommended in patients with ISIS >6. The management of patients with ISIS between 4 and 6 is still controversial and ranges from arthroscopic Bankart procedure with the addition of remplissage to the Latarjet procedure. Because advanced imaging techniques, such as computed tomography scans, allow us to assess appropriately the glenoid and humeral bone defect, their use is recommended in addition to ISIS.     

Die arthroskopische Bankart-Operation mit Hilfe von resorbierbaren Nahtankern

OBJECTIVE: Arthroscopic refixation of the labrum-ligament complex at the glenoid. INDICATIONS: Posttraumatic anterior or anterior-inferior shoulder instability with Bankart or ALPSA lesion (anterior labral periosteal sleeve avulsion). CONTRAINDICATIONS: Atraumatic shoulder instability. Instabilities due to blunted or frayed degeneration of the labrum-ligament complex. HAGL lesion (humeral avulsion of the glenohumeral ligaments) with humeral detachment of the glenohumeral ligaments. Larger bony glenoid defects. SURGICAL TECHNIQUE: Mobilization of the labrum-ligament complex from the neck of the glenoid, superior tightening and refixation at the glenoid rim with the aid of absorbable suture anchors. POSTOPERATIVE MANAGEMENT: Immobilization of the affected arm for 4 weeks in an immobilization bandage with abduction pillows. Daily pendulum exercises. Active flexion up to 70 degrees and abduction up to 40 degrees, all in neutral or internal rotation. Avoidance of external rotation for a total of 6 weeks. RESULTS: From January 1999 to December 2001, 58 patients with a Bankart or ALPSA lesion were treated with arthroscopic shoulder stabilization using absorbable suture anchors and slowly absorbable braided sutures. 56 patients underwent a follow-up clinical examination after, on average, 31 months (24-48 months). None of these patients had suffered more than five shoulder dislocations before the operation (average 2.8). Of the intraoperative lesions, a plain Bankart lesion was present in twelve patients (21.4%), 44 patients had an ALPSA lesion (78.6%), of which one in two were combined with an SLAP 2 or SLAP 3 lesion (superior labrum from anterior to posterior). In the evaluation using the Rowe Score, there was an excellent result for 40 patients (71.4%), and a good result for twelve (21.4%). Four patients suffered a repeat dislocation and were therefore classified as poor results (7.2%).     

骨性Bankart损伤的诊疗现状

盂肱关节是人体所有关节中活动度最大也是最不稳定的关节,由于肱骨头大而肩胛盂浅呈碟型,完全依靠骨性结构的完整性,以及肩关节周围的关节囊、韧带和肌肉维持其稳定性。而骨性Bankart损伤由于肩盂前方骨缺损和关节囊损伤,严重影响其稳定性,治疗不当容易常常发生复发性肩关节脱位。本文就Bankart损伤治疗的研究作一概述。