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Study: U.S. Embracing Reverse Shoulder Arthroplasty

Technique accounted for one-third of all procedures in 2011.

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By: Michael Barbella

Managing Editor

Since its introduction in 2004, reverse shoulder arthroplasty has gained rapid acceptance, accounting for one-third of all shoulder arthroplasty procedures in the United States in 2011, according to study results.

Using the Nationwide Inpatient Sample, New York City researchers identified an estimated 66,485 shoulder arthroplasty procedures performed in the United States in 2011. The Hospital for Special Surgery analysts then identified indicating diagnoses, demographics and hospital characteristics for each shoulder arthroplasty procedure, and multivariate regression was used to identify factors associated with long hospital stays.

Results showed rotator cuff tear and arthritis and proximal humerus fracture were common diagnoses for reverse shoulder arthroplasty (RSA). In 93 percent of cases, the study team found total shoulder arthroplasty was performed for osteoarthritis, whereas hemiarthroplasty was performed for 45 percent of patients with osteoarthritis and 38 percent of proximal humerus fractures. Compared with 69.8 percent of proximal humerus fractures treated with arthroplasty that underwent hemiarthroplasty, one-quarter received RSA, according to the data.

Although mortality occurred in 0.08 percent of patients with atraumatic diagnoses, the researchers found it occurred in 0.53 percent of patients with proximal humerus fractures. Older patients with comorbidities, as well as patients with government insurance, often had longer hospital stays, the statistics indicated.

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