Instability after a reverse shoulder total is one of the more common complications.
The 56 authors in Predictors of Dislocations following Reverse Shoulder Arthroplasty – A Study by ASES Complications RSA Multicenter Research Group identified 6621 patients who had a minimum 3 month followup (mean 19.4, Range 3-84) after a reverse total shoulder (RSA), performed by 24 experienced surgeons. The study population consisted of 40% men with an average age 71.0 years. The dislocation rate was 2.1% for the entire cohort (n=138), 1.6% for primary RSAs (n=99), and 6.5% in revision RSAs.
A trauma was the cause of 23.0% of dislocations.
The study found that the risk factors for dislocation were not modifiable.
(1) Other than glenohumeral OA with an intact Rotator Cuff (e.g. Non-union of fractures, rotator Cuff Disease, and failed previous arthroplasty are all examples.
(2) Subluxations that have occurred post-operatively but not radiographically before the dislocation.
(3) male sex,
The following are some examples of how to get started:
No repair of the subscapularis.
The authors of this study did not identify any modifiable factors that could increase the risk for implant dislocation such as implant type or size, implant location ,…