ABSTRACT
PURPOSE OF THE STUDY: Treatment options for unreduced anterior dislocation of the shoulder have varied from nonoperative treatment to different surgical options. Little has been written in the literature on the management of unreduced anterior dislocation or on the results of the different procedures. We report our experience and present the outcome after an open reduction joint-saving procedure used in five patients. MATERIAL AND METHODS: Five patients, mean age 39 years (range 17-69 years) underwent the joint-saving procedure for chronic anterior shoulder dislocation. Pain was predominant for two patients and functional impairment for three. The shoulder had been anteriorly dislocated for six weeks to up to 36 months (average 14 months). Open reduction was performed in all cases with reinsertion of the capsulo-labral complex onto the anterior glenoid rim. A bone graft was used in one patient to reconstruct an anterior glenoid bone defect involving more than half of the joint surface. No graft was used to fill the humeral head defect. RESULTS: At an average follow-up of 25 months (range 12-36 months), outcome was excellent in one patient, good in three, and poor in one (Rowe and Zarins score). Postoperatively, the overall score averaged 75 points (range 40-90). Pain score improved from 12 to 27 points. Three shoulders were totally pain free and two had mild to moderate pain. Motion improved from 12 to 28 points. Anterior active elevation averaged 126 degrees, external active rotation 17 degrees, and internal active rotation to the level of the first lumbar vertebral body. Functional score improved from 9 to 20 points. All the patients were able to perform daily living activities. The radiographic evaluation showed anterior subluxation of one shoulder one year after surgery. Osteoarthritis was also noted in one patient. No peroperative or postoperative complication was seen. DISCUSSION: Unreduced anterior shoulder dislocation should be treated with an open reduction and reconstruction of the specific lesions, unless the patient is old or debilitated. This operation can however be difficult and requires extensive soft tissue release, and occasionally use of a bone graft to reconstruct the anterior defect of the glenoid. The long-term results remain modest. When the humeral head cannot be saved because of extensive osteochondral lesions, shoulder arthroplasty must be the treatment of choice.
Subject(s)
Replantation/methods , Shoulder Dislocation/surgery , Accidental Falls , Activities of Daily Living , Adolescent , Adult , Aged , Chronic Disease , Female , Follow-Up Studies , Humans , Humerus/surgery , Ilium/transplantation , Male , Middle Aged , Pain/etiology , Range of Motion, Articular , Severity of Illness Index , Shoulder Dislocation/complications , Shoulder Dislocation/diagnostic imaging , Shoulder Dislocation/physiopathology , Tomography, X-Ray Computed , Treatment OutcomeABSTRACT
INTRODUCTION: The purpose of this study was to investigate the results of revision surgery for complications related to previous coracoïd transfer for recurrent anterior instability of the shoulder. MATERIALS AND METHODS: Seventeen patients with previous surgery for anterior shoulder instability underwent a new surgical procedure, because of recurrent instability in 10, and painful shoulder with limitation of motion in 7. A soft tissue procedure (Bankart and/or capsuloplasty) was performed in the 10 unstable shoulders, and a joint debridement with removal of the coracoid transfer in the 7 painful shoulders. The subscapularis was found to be normal in only 2 cases, fibrotic in 11, thin in 3, and teared in 1. The interval between the initial procedure and the revision surgery was eleven years on average. RESULTS: At an average of 21 months follow-up, the patients were evaluated according to the Duplay scoring system. A radiographic analysis was also performed for all the patients, and a CT-examination for fourteen. The results were good or excellent for 11 patients (70% in the soft tissue procedure group, and 57% in the debridement group with removal of the coracoid transfer), fair for 4, and poor for 2. Clinical evaluation of the subscapularis showed a lag of muscle function in 10 patients. Strength in internal rotation was 3.3 kg lesser in the operated shoulder compared to the opposite side. CT-examination showed that 4 patients presented a significantly fatty degeneration of the subscapularis. Finally on radiographic examination, osteoarthritis was present in 9 patients.The most important preoperative factor that affected the final results was the number of previous surgical procedures. DISCUSSION: Recurrent instability, problems related to the bone graft or ostheosynthesis material, osteoarthritis, and neurological damage can complicate a coracoid transfer procedure. Our study shows that this procedure can also induce irreversible damage to the subscapularis muscle. CONCLUSION: Revision surgery for complications related to coracoid transfer for anterior shoulder instability is a challenging procedure. Only 2/3 of patients achieved excellent or satisfactory results. Patients with recurrent instability had better results than those with painful impingement and or osteoarthritis. The high rate of late osteoarthritis and irreversible damage of the subscapularis muscle remain sources of concern.
