Arthroscopic anterior stabilization of the shoulder: two to six-year follow-up

BACKGROUND: The purpose of this study was to evaluate prospectively the surgical outcomes of arthroscopic repair of anterior capsulolabral lesions with use of suture anchors in a large series of patients who were followed for two to six years. METHODS: We evaluated the results of arthroscopic Bankart repair with use of suture anchors and nonabsorbable sutures in 167 patients with traumatic recurrent anterior instability of the shoulder. The mean age at the time of the operation was twenty-five years. Preoperatively and at the time of follow-up (at a mean of forty-four months), the patients were assessed with three objective outcome measurement tools (the Rowe score, the University of California at Los Angeles [UCLA] shoulder rating scale, and the American Shoulder and Elbow Surgeons [ASES] score) and two subjective measurement tools (pain and function visual analog scales). The recurrence rate, range of motion, and risk factors for postoperative recurrence were evaluated. RESULTS: All shoulder scores improved after surgery (p < 0.001). According to the Rowe scale, 130 patients (78%) had an excellent score; twenty-nine (17%), a good score; six (4%), a fair score; and two (1%), a poor score. Overall, the rate of postoperative recurrence of instability was 4% (one dislocation, two subluxations, and four positive results on the anterior apprehension test). Postoperative recurrence was related to an osseous defect of >30% of the entire glenoid circumference. In the patients with recurrent postoperative instability, the episodes were less frequent than they had been preoperatively and shoulder function was related to activity level. A revision arthroscopic Bankart repair stabilized three of the four shoulders in which it was performed. One hundred and fifty-two patients (91%) returned to >/=90% of their preinjury activity level. The mean loss of external rotation (and standard deviation) was 2.0 degrees +/- 4.0 degrees. CONCLUSIONS: We found that, in contrast to previous reports on the results of arthroscopic repair, arthroscopic capsulolabral repair with use of suture anchors can provide satisfactory outcomes in terms of recurrence rate, activity, and range of motion.     

关节镜下带线锚钉垂直褥式缝合修复Bankart损伤

目的介绍关节镜下带线锚钉垂直褥式缝合修复Bankart损伤技术,并评价其临床疗效。方法关节镜下带线锚钉垂直褥式缝合修复Bankart损伤技术操作步骤：于肩胛盂缘3点和5点钟位置分别植入2枚带线锚钉,分别在盂唇2点、4点和6点位置将盂唇韧带复合体进行垂直褥式缝合,并将其前下方关节囊向上转移。2004年4月至2006年8月收治的9例盂肱关节前向不稳定患者均无严重的肩胛盂骨性缺损,手术时平均年龄28岁（21—46岁）。采用Rowe肩关节修正评分进行临床随访,平均随访时间14个月（6—26个月）。Rowe肩关节修正评分术前（40±16）分。结果手术时间平均为51min（40—75min）。术后Rowe肩关节修正评分上升至（92±19）分（75—94分）。随访期间无复发,也未发生并发症,0°外展时外旋平均减少5°,90°外展时外旋平均减少3°。结论关节镜下带线锚钉垂直褥式缝合修复Bankart损伤治疗盂肱关节前下不稳定手术技术相对简单、手术时间短、近期临床效果较好。     

Bankart repair in traumatic anterior shoulder instability: Open versus arthroscopic technique

Purpose: The purpose of this study was to compare the results of open and arthroscopic Bankart repair using suture anchors in traumatic anterior glenohumeral instability. Variables measured were recurrence rate, range of motion, and return to preinjury activity. Type of Study: Case control study. Methods: Eighty-nine shoulders in 88 patients with traumatic unilateral anterior shoulder instability were evaluated using Rowe and University of California Los Angeles scores, recurrence, return to activity, and range of motion by an independent examiner at an average of 39 months after either an arthroscopic or open Bankart repair using suture anchors. The arthroscopic technique included a minimum of 3 anchors in most patients and a routine incorporation of capsular plication and proximal shift. Of the 89 shoulders, 30 shoulders (30 patients) underwent open Bankart repair and 59 shoulders (58 patients) underwent arthroscopic Bankart repair. Results: Twenty-six shoulders (86.6%) in the open repair group showed excellent or good results, and 54 (91.5%) shoulders in the arthroscopic repair group showed excellent or good results. The arthroscopic group revealed slightly higher scores in the Rowe (P = .041) and UCLA scores (P = .026). Two patients (6.7%) in the open repair group and 2 (3.4%) in the arthroscopic repair group had experienced at least 1 episode of redislocation after the surgery. One patient (3.3%) in the open repair group and 4 (6.8%) in the arthroscopic repair group demonstrated mild apprehension. The overall residual instability was 10% in the open repair group and 10.2% in the arthroscopic repair group. There were no significant differences in the loss of external rotation and return to prior activity between the 2 groups (P > .05). Residual instability occurred more frequently in patients with fewer anchors. Conclusions: Arthroscopic suture anchor capsulorraphy showed similar results to the open Bankart procedure.Arthroscopy: The Journal of Arthroscopic and Related Surgery, Vol 18, No 7 (September), 2002: pp 755–763     

Arthroscopic repair of Bankart lesion in traumatic anterior-inferior shoulder instability using the two-portal method: A preliminary report

BackgroundIn this report, we describe our preliminary clinical results of arthroscopic Bankart repair in traumatic anterior-inferior shoulder instability using the two-portal method.MethodFrom August 2009 to December 2011, arthroscopic repair of Bankart lesion using this method was performed in 16 consecutive patients who were prospectively enrolled. Fifteen shoulders were treated with two-anchor sutures and one was treated with three-anchor sutures. Twelve patients received metallic anchor screws and four patients received bioanchor screws. The assessments were performed using the Rowe score, the University of California at Los Angeles shoulder rating scale, the American Shoulder and Elbow Surgeons score, and the shoulder range of motion (ROM) deficit.ResultsWith an average follow-up period of 22.9 months, all shoulder scores improved after surgery (p < 0.001). The average ROM deficit of the operated shoulders was not significant as compared with the healthy side in forward elevation (p > 0.05), but was significant in external rotation (p < 0.05). All of the 16 shoulders remained stable (100%) after the arthroscopic repair surgery. All patients returned to their preinjury levels of daily activity without recurrent problems.ConclusionIn patients with traumatic anterior glenohumeral instability, arthroscopic Bankart repair with the two portal method can provide good results. It can be an alternative method of treating patients with Bankart lesion without associated major glenoid defect or rotator cuff lesion in traumatic anterior-inferior instability.     

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 revision of Bankart repair

The success of revision surgery for failed Bankart repair is not well known. This purpose of this study was to report the success rates achieved using arthroscopic techniques to revise failed Bankart repairs. Twelve arthroscopic revision Bankart repairs were performed on patients with recurrent unidirectional shoulder instability after open or arthroscopic Bankart repair. Follow-up was available on 11 of the 12 patients at a mean of 34.4 months (range, 25-56 months). The surgical findings, possible modes of failure, shoulder scores (Rowe score, University of California Los Angeles [UCLA], Simple Shoulder Test), and clinical outcome were evaluated. Various modes of failure were recognized during revision arthroscopic Bankart repairs. Good-to-excellent results were obtained in 8 patients (73%) undergoing revision stabilization according to Rowe and UCLA scoring. A subluxation or dislocation event occurred in 3 (27%) of the 11 patients at a mean of 8.7 months (range, 6-12 months) postoperatively. Arthroscopic revision Bankart repairs are technically challenging procedures but can be used to achieve stable, pain-free, functional shoulders with return to prior sport. Owing to limited follow-up and the small number of patients in this study, we were unable to conclude any pattern of failure or selection criteria for this procedure.     

两种手术方法治疗习惯性肩关节前下脱位的比较

目的 对比研究小切口改良Bristow手术和关节镜下带线锚钉修复Bankart损伤治疗肩关节习惯性前下脱位的临床疗效.方法 2004年6月至2008年1月对20例习惯性肩关节前下脱位患者根据其经济状况进行分组,11例采用小切口改良Bristow手术,为小切13组;9例采用关节镜下带线锚钉垂直褥式缝合修复Bankart损伤,为关节镜组.回顾分析两组的手术时间、术后Rowe肩关节功能修正评分;观察两组的复发率与并发症发生情况.结果 手术时间:小切口组平均为45 min,关节镜组平均为51min.术后Rowe肩关节修正评分:小切口组为80～95分,关节镜组为75～94分.小切口组11例患者术后获6～48个月(平均15.8个月)随访.关节镜组9例患者术后获18～38个月(平均26个月)随访.两组结果全为优,优良率为100%,随访期间均无复发及并发症发牛.结论 小切口改良Bristow手术与关节镜下Bankart损伤修复手术临床效果无明显差别,均较满意,且具有手术切口小、创伤小、手术时间短等优点.前者手术易于临床普及.     

关节镜下双袢固定自体髂骨修复合并严重骨缺损的Bankart损伤临床疗效分析

目的 探讨关节镜下双袢固定自体髂骨修复合并严重骨缺损的Bankart损伤患者肩关节临床功能改善及肩胛盂骨缺损修复情况.方法 回顾性分析2015年7月至2018年7月在南方医科大学第三附属医院运动医学科采用关节镜下双袢固定自体髂骨植骨术治疗的17例合并严重骨缺损的Bankart损伤患者.在术前和术后使用美国肩肘外科协会(...     

MRI evaluation of the inferior glenohumeral ligament: Comparison with arthroscopic findings in 81 shoulders

Arthroscopic Bankart repair, using staples, requires a thick and wide anterior band of the inferior glenohumeral ligament. We compared MRI and arthroscopic findings of the ligament in 81 shoulders with traumatic anterior glenohumeral instability. When fluid was present in the shoulder, sensitivity and specificity of the MRI evaluation for the presence of a thick and wide ligament were 82% and 100%, respectively. In shoulders without joint fluid, the condition of the ligament was evaluated according to the presence of a low- or moderate-signal triangle structure on the anterior margin of the glenoid cavity in the 3 MR images obtained from the inferior 2 cm of the glenoid. Sensitivity and specificity of the MRI evaluation in cases without fluid were 84% and 93%, respectively. The MR technique needs to be further improved to achieve better sensitivity for preoperative selection of shoulders suitable for Bankart repair with staples.     

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%).     

The “Bony Bankart Bridge” Procedure: A New Arthroscopic Technique for Reduction and Internal Fixation of a Bony Bankart Lesion

Arthroscopic treatment of bony Bankart lesions can be challenging. We present a new easy and reproducible technique for arthroscopic reduction and suture anchor fixation of bony Bankart fragments. A suture anchor is placed medially to the fracture on the glenoid neck, and its sutures are passed around the bony fragment through the soft tissue including the inferior glenohumeral ligament complex. The sutures of this anchor are loaded in a second anchor that is placed on the glenoid face. This creates a nontilting 2-point fixation that compresses the fragment into its bed. By use of the standard technique, additional suture anchors are used superiorly and inferiorly to the bony Bankart piece to repair the labrum and shift the joint capsule. We call this the “bony Bankart bridge” procedure.     

Hill-Sachs Remplissage手术治疗骨缺损性复发性肩关节前脱位

目的 探讨关节镜下Bankart重建术辅助Hill-Sachs Remplissage手术治疗存在明显骨缺损的复发性肩关节前脱位的疗效.方法 回顾性分析随访2年以上的应用关节镜下Bankart重建术辅助Hill-Sachs Remplissage手术治疗的复发性肩关节前脱位49例患者的病例资料,男42例,女7例;接受手术时年龄16.7～54.7岁,平均28.4岁.49例均为单向不稳定,合并明显的肩盂骨性损伤及巨大的Hill-Sachs损伤.术中采用金属缝合锚钉行Bankart修补,辅助后方冈下肌腱固定填充Hill-Sachs损伤.全部病例随访24～35个月,平均29.0个月,随访时采用ASES评分、Constant-Murley评分、Rowe评分进行功能评估,观察肩关节活动度变化.结果 术前及终末随访时肩关节平均前屈上举162.9°±17.1°和170.9°±7.4°(P=0.007),平均体侧外旋56.0°±17.6°和54.1°±17.1°(P=0.511);ASES评分为(84.7±11.3)分和(96.0±3.4)分(P=0.000),Constant-Murley评分为(93.3±8.7)分和(97.8±3.6)分(P=0.005),Rowe评分为(36.8±8.5)分和(89.8±12.5)分(P=0.000).终末随访时1例患者出现复发脱位,3例患者出现半脱位,失效率8.2%(4/49).此4例患者恐惧试验阳性.结论 肩关节镜下Bankart重建术辅助Hill-Sachs Remplissage手术是治疗存在明显骨缺损的复发性肩关节前脱位的有效方法之一.手术适应证的正确选择、熟练的关节镜下操作技术以及术后长期、严格的功能康复锻炼是手术成功的关键.

Abstract：

Objective The purpose of our study was to report the results of using arthroscopic Remplissage and Bankart repair in patients who had an engaging Hill-Sachs lesion with significant glenoid bone loss. Methods We retrospectively reviewed 49 consecutive patients who underwent arthroscopic Remplissage and Bankart repair for anterior shoulder instability with a mean duration of follow-up of 29.0 months (24-35 months). At the time of surgery the mean age of 42 men and 7 women was 28.4 years. All patients were diagnosed as recurrent anterior shoulder dislocation with a bony lesion of glenoid and an engaging HillSachs lesion. An arthroscopic Remplissage and Bankart repair using metal anchor was performed in all cases.ASES score, Constant-Murley score and Rowe score were used to evaluate the stability and the function of the shoulder. Results Patients' active forward elevation significantly(P=0.007) improved from 162.9°±17.1°preoperatively to 170.9°±7.4° at final follow-up. The external rotation was 56.0°±17.6° before the surgery compared with the 54.1°±17.1° postoperatively(P=0.511 ). The ASES score, Constant-Murley score and Rowe score was 84.7±11.3, 93.3±8.7 and 36.8±8.5 preoperatively compared with 96.0±3.4, 97.8±3.6 and 89.8±12.5 postoperatively. Significant difference could be found with regard to ASES score (P=0.000), ConstantMurley score (P=0.005) and Rowe score (P=0.000). One redislocation happened and a subluxation was noticed in three patients (8.3%). Conclusion Arthroscopic Remplissage combined with Bankart repair can achieve satisfactory for recurrent anterior shoulder dislocation accompany with engaging Hill-Sachs lesion.     

Arthroscopic treatment of bidirectional glenohumeral instability: two- to five-year follow-up

This investigation presents the results of arthroscopic repair of bidirectional (inferior with either an anterior or a posterior component) glenohumeral instability in 54 patients with 2-year minimum follow-up. The study group consisted of 43 males and 11 females. The average age at the time of operation was 32 years (range, 15-55 years); the average interval from operation to final evaluation was 34 months (range, 26-63 months). The American Shoulder and Elbow Surgeons' Shoulder Index and the Constant, Rowe, and University of California at Los Angeles scores were recorded preoperatively and at final evaluation. Preoperatively, no patients rated good to excellent overall (according to the Rowe Scale), whereas at final follow-up 91% (49 of 54 patients) rated good to excellent. The American Shoulder and Elbow Surgeons' Shoulder Index improved to 94 from 45.5 (P =.001). The absolute Constant score improved to 92 from 57 (P =.001). The Rowe score improved to 92 from 20.3 (P =.001). The University of California at Los Angeles total score improved to 32.7 from 18.6 (P =.001). Average passive external rotation at 90 degrees of abduction measured 89.5 degrees. Forty patients returned to sports, but 10 (25%) of these patients participated at a lower level. For each of 4 patients, the index operation was considered a failure because of persistent instability; 1 patient underwent a second operative procedure. Thermal capsulorraphy (with a Holmium laser) of the glenohumeral ligaments was used to supplement suture repair, but in no shoulder was thermal capsulorraphy used as the only treatment. The etiology of bidirectional glenohumeral instability is complex, and operative correction of multiple intraarticular lesions was necessary.     

Arthroscopic Bankart reconstruction with a bioabsorbable anchor

This study evaluated the clinical effectiveness of a poly-l-lactic acid biodegradable suture anchor for arthroscopic Bankart reconstruction with a prospective multicenter study. Inclusion criteria were one or more episodes of traumatic dislocation or multiple posttraumatic subluxations as a manifestation of unidirectional anterior instability. Exclusion criteria were significant glenoid bone deficiency, large Hill-Sachs lesions, rotator cuff tears, multidirectional instability, posterior labrum tears, or biceps ruptures. Fifty-seven patients were followed up for a mean of 24 months. Postoperative apprehension tests were negative in all but two. Motion improved from 155 degrees preoperatively to a mean of 175 degrees postoperatively. Four patients had postoperative instability symptoms (two dislocators and two with subluxations). Postoperative radiographs demonstrated no lytic or resorptive bone changes from the suture anchors. The mean postoperative Rowe score was 93. The biodegradable suture anchor achieved good clinical results when used for arthroscopic Bankart reconstruction with no material-related adverse events.     

Arthroscopic Bankart repair with extracapsular and extra-articular knot using the Mitek suture anchor.

The recurrence of instability after arthroscopic stabilization has been significantly higher than after open repair. One of the reasons for the high failure rate is the inability of arthroscopic repairs to address the plastic deformity of the capsule that occurs in the glenohumeral ligament-labrum complex. The arthroscopic technique is used to repair the torn labrum to the glenoid, but without adequate tightening of the anterior capsule, which is successfully accomplished with an open technique. This report describes the new technique of arthroscopic Bankart repair with extracapsular and extra-articular knot using suture anchors that allows tightening of the anterior capsule sufficiently as with an open Bankart procedure.     

The effect of a glenoid defect on anteroinferior stability of the shoulder after Bankart repair: a cadaveric study

BACKGROUND: An osseous defect of the glenoid rim is sometimes caused by multiple recurrent dislocations of the shoulder. It is generally thought that a large defect should be treated with bone-grafting, but there is a lack of consensus with regard to how large a defect must be in order to necessitate this procedure. Some investigators have proposed that a defect must involve at least one-third of the glenoid surface in order to necessitate bone-grafting. However, it is difficult to determine (1) whether a defect involves one-third of the glenoid surface and (2) whether a defect of this size is critical to the stability of the shoulder after a Bankart repair. The purposes of the present study were (1) to create and quantify various sizes of osseous defects of the glenoid and (2) to determine the effect of such defects on the stability and motion of the shoulder after Bankart repair. METHODS: The glenoids from sixteen dried scapulae were photographed, and the images were scanned into a computer. The average shape of the glenoid was determined on the basis of the scans, and this information was used to design custom templates for the purpose of creating various sizes of osseous defects. Ten fresh-frozen cadaveric shoulders then were obtained from individuals who had been an average of seventy-nine years old at the time of death, and all muscles were removed to expose the joint capsule. With use of a custom multiaxis electromechanical testing machine with a six-degrees-of-freedom load-cell, the humeral head was translated ten millimeters in the anteroinferior direction with the arm in abduction and external rotation as well as in abduction and internal rotation. With a fifty-newton axial force constantly applied to the humerus in order to keep the humeral head centered in the glenoid fossa, the peak force that was needed to translate the humeral head a normalized distance was determined under eleven sequential conditions: (1) with the capsule intact, (2) after the creation of a simulated Bankart lesion, (3) after the capsule was repaired, (4) after the creation of an anteroinferior osseous defect with a width that was 9 percent of the glenoid length (average width, 2.8 millimeters), (5) after the capsule was repaired, (6) after the creation of an osseous defect with a width that was 21 percent of the glenoid length (average width, 6.8 millimeters), (7) after the capsule was repaired, (8) after the creation of an osseous defect with a width that was 34 percent of the glenoid length (average width, 10.8 millimeters), (9) after the capsule was repaired, (10) after the creation of an osseous defect with a width that was 46 percent of the glenoid length (average width, 14.8 millimeters), and (11) after the capsule was repaired. RESULTS: With the arm in abduction and external rotation, the stability of the shoulder after Bankart repair did not change significantly regardless of the size of the osseous defect (p = 0.106). With the arm in abduction and internal rotation, the stability decreased significantly as the size of the osseous defect increased (p<0.0001): the translation force in shoulders in which the width of the osseous defect was at least 21 percent of the glenoid length (average width, 6.8 millimeters) was significantly smaller than the force in shoulders without an osseous defect. The range of external rotation in shoulders in which the width of the osseous defect was at least 21 percent of the glenoid length was significantly less than that in shoulders without a defect (p<0.0001) because of the pretensioning of the capsule caused by closing the gap between the detached capsule and the glenoid rim. The average loss of external rotation was 25 degrees per centimeter of defect. CONCLUSIONS: An osseous defect with a width that is at least 21 percent of the glenoid length may cause instability and limit the range of motion of the shoulder after Bankart repair.     

Editorial Commentary: Anchor Position Affects Glenoid Resorption Rates After Arthroscopic Bankart Repair: Shoulder Stabilization Surgery Is a Game of Millimeters

The technical nuances of arthroscopic Bankart repair cannot be overstated. Previous literature has identified a number of risk factors for failure of arthroscopic stabilization procedures, and the implications of glenoid bone loss is widely recognized as a critical driver of postoperative outcomes. However, other technical considerations (inadequate number of suture anchors, improper position of suture anchors) have been acknowledged as risk factors for the failure of arthroscopic stabilization procedures. More recently, concerns have been raised regarding the observed rates of glenoid bone resorption following arthroscopic Bankart repair, which theoretically may predispose higher rates of clinical failure. Furthermore, certain techniques for placing anchors on the glenoid during arthroscopic Bankart repair may accelerate these resorptive changes. Precise measures of poststabilization surgery glenoid resorption coupled with comprehensive assessments of clinical outcomes are required to determine the optimal technique for anchor insertion during arthroscopic Bankart repair.     

锚钉固定位置与角度对肩关节前关节囊修复效果影响

目的探讨不同锚钉位置及角度对关节镜治疗复发性肩关节前向不稳临床疗效的影响。 方法回顾性分析85例于2018年1月至12月因复发性肩关节前向不稳在南部战区总医院接受肩关节镜手术治疗的患者排除严重骨缺损、翻修等其他损伤。使用术后肩关节CT测量锚钉位置及插入角度，采用视觉模拟评分系统(VAS评分)及Rowe评分系统对患者术后关节疼痛程度、稳定性、活动度及功能进行综合评价。不同锚钉位置及角度与VAS评分及Rowe评分的关系使用独立样本t检验分析。 结果在85例患者中，有57例患者的所有锚钉均在肩胛盂关节面上，28例患者的锚钉部分在肩胛盂关节面上，部分在肩胛盂边缘。两组的比较中，VAS评分差异无统计学意义(t ＝－0.829，P>0.05)；所有锚钉均在肩胛盂关节面上的患者Rowe评分较高(t＝－4.072，P<0.05)。通过术后Rowe评定分级对锚钉打入角度的反向比较中，2点、3点、4点和5点钟4个位点对应锚钉角度之间的比较均无统计学差异(t＝0.312、0.885、0.775、0.934，均为P>0.05)。 结论肩关节镜下缝合锚钉在合理插入角度范围内固定于肩胛盂边缘稍内侧的关节面上可以使复发性肩关节前向不稳的患者获得更好的近期疗效，而远期疗效需要进一步深入研究。     

Operative Management of Anterior Glenohumeral Instability

Abstract Introduction: Management of glenohumeral instability focuses more on operative treatment, while non-operative management, especially in young, active patients, may cause recurrent instability in a high percentage. Aim: Management of anterior glenohumeral instability, their advantages and limitations, the operative techniques and results will be described and discussed. Materials and Methods: A total of 379 patients who were operated between 1985 and 1994 for recurrent shoulder instability were followed up; 110 patients were managed with open Bankart procedure, 165 patients with arthroscopic Bankart and 98 patients were treated with a bone-block procedure. Follow-up evaluation was performed 53 months on average postoperatively. According to Rowe the functional results were classified as excellent and good in 91% with the open Bankart procedure, 80.6% with the arthroscopic Bankart repair and the results using the bone-block were rated as excellent and good in 95.4%. Overall complication rate was 16.3% (arthroscopic), 6.4% (open Bankart) and 4.4% (bone-block group). In patients with long-time results, degenerative signs at the glenoid and/or the humeral head were evaluated on plane radiographs (according to Rosenberg). In 17 long-term results of the bone-block procedure, Stage I osteoarthritis was identified in 25.5%, but no severe osteoarthrosis (stage II or III), while in the open Bankart group an osteoarthrosis rate of 18.6% (stages II and III) was found. Conclusion: Different types and causes of glenohumeral instability recommend different techniques for operative treatment of anterior glenohumeral instability. The bone-block procedure provided the best results regarding stability and function; long-term radiological results indicate that bony repair prevents and does not cause osteoarthrosis.     

关节镜下Bankart修复术治疗肩关节复发性前脱位:手术效果及复发危险因素分析

目的 探讨关节镜下Bankart修复术(缝合锚钉技术)治疗肩关节复发性前脱位的临床效果,并对术后复发不稳的可能危险因素进行分析.方法 2002年3月至2010年3月连续收治肩关节复发性前脱位患者259例,均采用关节镜下缝合锚钉技术进行Bankart修复手术,其中188例患者获得随访.患者手术时平均年龄25.3岁(13～58岁);其中男性143例、女性45例;运动员50名、非运动员138名.随访时采用美国肩肘关节外科协会评分系统(ASES)肩关节评分、Rowe评分以及患者满意度评价手术效果.术前肩关节ASES评分平均72.6分,Rowe评分平均33.4分.对于肩关节术后不稳的复发率、关节活动范围以及术后复发不稳的危险因素进行评估.结果 188例患者术后平均随访38.6个月(12～110个月).术后肩关节ASES评分平均91.9分,与术前比较差异具有统计学意义(P＜0.001);术后Rowe评分平均81.9分,与术前比较差异具有统计学意义(P＜0.001).患者手术满意度调查显示,满意152例、基本满意16例、不满意20例,满意率为89.4%.术后有24例患者复发脱位,总体复发率为12.8%;运动员患者复发率为28.0%,非运动员复发率为7.2%.术后患者平均肩关节外展外旋为75.2°,与术前比较无明显丧失(P＞0.05).关节镜Bankart修复术后复发不稳与患者年龄及是否为运动员明显相关(P＜0.05);而与术前病程长短、锚钉类型、锚钉数目、骨性Bankart损伤、合并肩关节上盂唇撕裂损伤、合并后或下方盂唇损伤、合并肩袖撕裂、关节松弛以及肩袖间隙闭合等因素无明显相关(P＞0.05).结论 关节镜下采用缝合锚钉进行Bankart修复术是治疗肩关节复发性前脱位的有效方法,临床效果比较满意.年轻患者(≤20岁)和运动员患者是术后肩关节复发不稳的高危因素,必要时选择切开手术.

Abstract：

Objective To evaluate retrospectively the results of arthroscopic Bankart repair using suture anchors for recurrent anterior shoulder dislocation with a minimum 1-year follow-up and to assess risk factors for recurrence.Methods From March 2002 to March 2010,259 patients with recurrent anterior shoulder dislocation underwent arthroscopic Bankart repair with suture anchors.And 188 patients(50 athletes,138 nonathletes)were available for follow-up.The mean age at the time of surgery was 25.3 years (range,13-58 years).The mean follow-up was 38.6 months(range,12-110 months).All of the 188 patients were evaluated preoperatively and postoperatively with the American Shoulder and Elbow Society (ASES)shoulder score and Rowe score system.The rate of recurrent instability,range of motion,and risk factors for postoperative recurrence were evaluated.The ASES score was 72.6 preoperatively,and Rowe score was 33.4.Results The ASES scores improved significantly to 91.9 postoperatively(P＜0.001).The Rowe scores improved to 81.9 postoperatively(P＜0.001).And 152 patients were greatly satisfied with the results,16 satisfied and 20 unsatisfied.The satisfactory rate was 89.4%.24 patients(12.8%)suffered a recurrence after surgery,14 athletes and 10 nonathletes.The recurrence rates were 28.0% in the athlete group and 7.2% in the nonathlete group.On average there was no significant loss of external rotation postoperatively(average,75.2° preoperatively and 67.2° postoperatively).Patients under age 20,and athlete patients were associated with recurrence(P＜ 0.05).Other factors including length of time until surgery,type of anchors,number of anchors,presence of bony Bankart lesion,presence of a superior labrum,anterior and posterior tear,presence of posterior or inferior labrum lesion,presence of rotator cuff tear,ligamentous laxity and rotator interval closure did not influence the recurrence rate(P＞0.05).Conclusions Arthroscopic Bankart repair is a good option for the treatment of recurrent anterior shoulder dislocation.Identification of risk factors for recurrence allows for consideration of open stabilization.In the series,patients under age 20 and athlete patients are the most important risk factors for recurrence.