Biomechanical Effects of Failure Modes in Repeated Anterior Inferior Glenohumeral Joint Dislocations

Author(s):  
Thay Q. Lee ◽  
Bruce Y. Yang ◽  
James E. Tibnoe ◽  
Patrick J. McMahon

Accurate and precise quantification of the failure modes and repair methods for anterior inferior glenohumeral joint dislocations are very important for effective surgical treatment of the shoulder. The purpose of this study was to quantitatively assess the effects of failure modes and repair strength by measuring the differences in glenohumeral translation and joint forces prior to and following repeated anterior shoulder dislocation and repair.

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Hayat Ahmad Khan ◽  
Younis Kamal ◽  
Mohammad Ashraf Khan ◽  
Munir Farooq ◽  
Naseemul Gani ◽  
...  

Fifty percent of joint dislocations reported to the emergency department are of shoulder joint. Various techniques are used to reduce the shoulder and Spaso technique is the least known to the orthopaedic residents which is a simple one-man vertical traction method of shoulder reduction. We evaluated the effectiveness of vertical traction method for anterior shoulder dislocation by orthopaedic residents. Sixty consecutive patients of anterior glenohumeral dislocation attending the emergency department of our hospital were taken up for the study. The reduction was done using Spaso technique. Right shoulder was dislocated in 40 patients and 31 patients had recurrent shoulder dislocation. In 55 patients, shoulder was reduced without the use of any anaesthesia. In patients where no anaesthesia was used, the time of traction ranged from 45 seconds to 5 minutes, while under anaesthesia the time of traction ranged from 1 to 4 minutes. Twenty-one patients had associated greater tuberosity fracture which did not affect the method of reduction and all of them were reducible. No complication was reported, and all the patients were satisfied with the method. In conclusion vertical traction method is a good technique for reducing anterior shoulder dislocation with an easy learning curve among the residents and no complication has been reported so far.


2017 ◽  
Vol 07 (09) ◽  
pp. 241-253
Author(s):  
Walter Hugo Brandão Nascimento ◽  
Lailson Oliveira de Castro ◽  
Liwerbeth dos Anjos Pereira ◽  
João Paulo Pimentel de Sousa ◽  
Paulo Renan Matos Sucupira Cunha ◽  
...  

2021 ◽  
pp. 036354652199638
Author(s):  
Cécile Pougès ◽  
Alexandre Hardy ◽  
Thomas Vervoort ◽  
Thomas Amouyel ◽  
Pauline Duriez ◽  
...  

Background: The risk of recurrence after the first episode of anterior shoulder dislocation is high with nonoperative treatment in younger patients. Purpose/Hypothesis: The aim of this study was to compare the results of arthroscopic Bankart repair and nonoperative treatment for shoulder dislocation in patients younger than 25 years, with a minimum of 2 years of follow-up. The hypothesis was that surgery would decrease the risk of recurrence. Study design: Randomized controlled trial; Level of evidence, 1. Methods: We included patients aged between 18 and 25 years after a first episode of anterior shoulder dislocation and divided them into 2 groups. The first group was treated surgically with an arthroscopic Bankart repair within 2 weeks after the dislocation; the second group was treated nonoperatively. Both groups were immobilized for 3 weeks in internal rotation and followed the same physical therapy protocol. Standard radiography and computed tomography were performed immediately after reduction of the dislocation, and follow-up was performed at 3, 6, 12, and 24 months. The primary outcome measure was instability recurrence, defined as another anterior shoulder dislocation requiring closed reduction by another person (the patient was unable to reduce the dislocated joint themselves), a subluxation, or a positive apprehension test. Secondary outcome measures included range of motion, return to sport, and functional scores such as the short version of the Disabilities of the Arm, Shoulder and Hand score the Walch-Duplay score, and the Western Ontario Shoulder Instability Index (WOSI). Results: A total of 20 patients were included in each group. The mean ± SD age was 21 ± 1.8 years, and there were 33 men (82.5%) and 7 women (17.5%) in the total sample. Recurrence of instability was significantly decreased in the surgical treatment group compared with the nonoperative group (2 [10%] vs 14 [70%], respectively; P = .0001). Fewer patients in the surgical treatment group versus the nonoperative group had another episode of dislocation (0 vs 6 [30%], respectively), subluxation (2 [10%] vs 13 [65%], respectively; P = .003), or a positive apprehension test (1 [5%] vs 11 [58%], respectively; P = .0005). The Walch-Duplay score (88.4 vs 70.3 points; P = .046) and WOSI (11.5 vs 17.7 points; P = .035) were significantly better in the surgical group versus the nonoperative group after a 2-year follow-up. Level of sport was the same or better in 89% of the surgical treatment group vs 53% of the nonoperative treatment group ( P = .012). No surgical complication was recorded. We did not find any significant difference in range of motion. Conclusion: In patients with first-time shoulder dislocations, arthroscopic labral repair (Bankart procedure) reduced the risk of secondary shoulder dislocation and improved functional outcome versus nonoperative treatment after a 2-year follow-up. Surgical treatment after a first episode of shoulder dislocation could be offered as a primary treatment option in a younger population if these results are confirmed by larger studies with a longer follow-up. Registration: NCT03315819 (ClinicalTrials.gov identifier)


2018 ◽  
Vol 6 (6) ◽  
pp. 232596711878131
Author(s):  
Madis Rahu ◽  
Jüri-Toomas Kartus ◽  
Elle Põldoja ◽  
Kirsti Pedak ◽  
Ivo Kolts ◽  
...  

Background: Because of the high risk for redislocations after a first-time traumatic anterior shoulder dislocation with conservative treatment, recent publications have recommended early arthroscopic intervention, especially for young athletes. Concomitant rotator cuff tendon damage may occur when the shoulder dislocates; however, its presence and influence on clinical results have not been well described in this patient category. Hypothesis: In opposition to current opinion, a substantial number of articular-sided partial-thickness rotator cuff tears (APTRCTs) would be found at surgery after a first-time traumatic anterior shoulder dislocation in young athletes. However, the impact of these injuries on 2-year postoperative results would be negligible. Study Design: Cohort study; Level of evidence, 3. Methods: Sixteen male patients (mean age, 21 years [range, 16-25 years]) with a first-time traumatic anterior shoulder dislocation without bony Bankart lesions were included in this study. The indications for surgical treatment were age less than 25 years and being active in collision or contact sports at a competitive level. Arthroscopic surgery was performed at a mean 7.8 days (range, 2-14 days) after injury. Rowe and American Shoulder and Elbow Surgeons (ASES) scores as well as range of motion were evaluated at a minimum 2 years after an arthroscopic Bankart procedure, and a comparison of the clinical results between patients with and without APTRCTs was conducted. Results: An anterior-inferior capsulolabral injury was found in all patients. There were no bony Bankart lesions. An APTRCT was found in 9 of the 16 patients. At 2 years after surgical treatment, there were no significant differences between the patients with and without APTRCTs in terms of the Rowe score (90.0 and 87.1, respectively; P = .69) and ASES score (94.6 and 90.4, respectively; P = .67). Conclusion: APTRCTs were found in the superior part of the shoulder joint after a first-time traumatic anterior shoulder dislocation in a majority of young male athletes treated with surgical stabilization. There were no significant differences found between patients with and without APTRCTs in terms of the Rowe and ASES scores at 2 years after surgical treatment.


Author(s):  
Michael O’Keeffe ◽  
Kiran Khursid ◽  
Peter L. Munk ◽  
Mihra S. Taljanovic

Chapter 12 discusses glenohumeral joint trauma. The shoulder is one of the most frequently dislocated joints in the body. The glenohumeral joint is ball and socket articulation between the humeral head and scapular glenoid. The humeral head is significantly larger than the glenoid fossa, which predisposes this joint to instability. Anterior shoulder dislocations are more common than those occurring posteriorly, and true inferior dislocations are rare. Bone injuries associated with anterior glenohumeral joint dislocations are the bony Bankart and Hill-Sachs lesions. The diagnosis of dislocation is made on radiographs. CT examination is useful in the evaluation of associated bone lesions and glenoid bone loss. Magnetic resonance arthrography (MRA) is the study of choice in the evaluation of associated glenolabral and rotator cuff injuries. Initial treatment is closed reduction with immobilization and subsequent physical therapy. Surgical treatment is indicated for complicated dislocations with instability.


2012 ◽  
Vol 47 (2) ◽  
pp. 222-227
Author(s):  
Alberto Naoki Miyazaki ◽  
Marcelo Fregoneze ◽  
Pedro Doneux Santos ◽  
Luciana Andrade da Silva ◽  
Guilherme do Val Sella ◽  
...  

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