Posterior bone block of chronic locked posterior shoulder dislocations with glenoid augmentation: a retrospective evaluation of ten shoulders.

PURPOSE: The aim of this study, which is the most extensive series to date on this subject, was to present the results of ten shoulders of seven patients treated with the posterior bone block augmentation method with autograft taken from the iliac wing for a chronic locked posterior shoulder dislocation and to evaluate the results in the light of the relevant literature.
METHODS: A retrospective examination was made of patients who underwent iliac autograft with glenoid augmentation for chronic posterior shoulder dislocation in our clinic between 2004 and 2011. All of the patients had been initially treated at another centre and referred to our hospital because of continuing or relapsing posterior shoulder dislocation. Assessment was made by physical examination X-ray, computed tomography (CT), and the Constant-Murley score.
RESULTS: All the patients were male with a mean age at the time of surgery of 42.4 years (range, 23-53 years), with a mean follow-up period of 40.6 months (range, 24-55 months). On presentation, all the patients had locked posterior shoulder dislocation. Radiological union was evaluated from the CT images taken 24 months postoperatively. The graft was observed to have been incorporated in all cases. The mean postoperative Constant-Murley score was 81.25/100 ± 17.8. In seven of the shoulders, arthropathy findings increased by varying degrees.
CONCLUSIONS: A functional and stable shoulder can be obtained with glenoid augmentation in patients with chronic locked posterior shoulder dislocation. When other treatment alternatives are considered for a young patient group, this is a safe and applicable treatment method.