Risk Factors and Complications for Revision Shoulder Arthroplasty.

BACKGROUND: Revision shoulder arthroplasty has become increasingly common as primary arthroplasty has become more widespread. QUESTIONS/PURPOSES: We sought to answer two questions: What are the risks factors for revision shoulder arthroplasty? What are the complications associated with revision shoulder arthroplasty?
METHODS: A retrospective search of a national insurance database from the years 2013 to 2016 was undertaken for billing codes of patients undergoing revision shoulder arthroplasty. The odds ratios for revision of various patient demographic characteristics and comorbidities were determined. The incidences of various complications within 90 days of revision were determined.
RESULTS: A total of 824 cases of revision shoulder arthroplasty were found. Eighty-seven patients (10.5%) had infections prior to revision and 133 patients (16.1%) had dislocations prior to revision. Of the risk factors examined, smoking status was associated with the highest odds ratio for revision (8.1). Additionally, depression, Charlson Comorbidity Index (CCI), male gender, renal failure, and diabetes were significant risks factors for revision. The most common complication of revision shoulder arthroplasty was found to be surgical site infection, affecting 10.9% of patients. In the time period studied, 89 patients underwent more than one revision shoulder arthroplasty.
CONCLUSION: Despite limitations inherent in database studies, this data may have utility for surgeons in pre-operative counseling of patients on their risk. © Hospital for Special Surgery 2019.