Introduction Posterior shoulder dislocation in association with reverse Hill–Sachs lesion is a rather rare injury. Few studies reporting results after joint-preserving surgery in these cases are available. This current study presents the clinical outcomes 10 years postoperatively. Materials and methods In a prospective case series, we operatively treated 12 consecutive patients (all males) after posterior shoulder dislocation with associated reverse Hill–Sachs lesion using joint-preserving techniques. Patients received surgery in a single center between January 2008 and December 2011. The joint-preserving surgical procedure was chosen depending on the defect size and bone quality. The following outcome-measures were analyzed: Constant-Score, DASH-Score, ROWE-Score, and SF-12. Results 1, 5, and 10 years postoperatively were compared. Results Out of 12 patients, ten patients (83.3%) were followed-up with a mean follow-up interval of 10.7 years (range 9.3–12.8). The mean patient age at the time of the last follow-up was 51 years (32–66). The outcome scores at the final follow-up were: Constant 92.5 (range 70.0–100), DASH 3.2 (0.0–10.8), ROWE 91.0 (85.0–100), and SF-12 87.8 (77.5–98.3). Clinical results had improved from 1 to 5 years postoperatively and showed a tendency for even further improvement after 10 years. Conclusions Joint-preserving surgical therapy of posterior shoulder dislocation provides excellent results when the morphology of the reverse Hill–Sachs lesion is respected in surgical decision-making. Trial registration 223/2012BO2, 02 August 2010.
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