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State-based analysis: Shoulder arthroplasty being used more frequently among patients with OA
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Among a 7-million participant California-based analysis from 2005 to 2013, shoulder arthroplasty became used at a greater frequency for all patients, including those with osteoarthritis.
“This study represents a 9-year retrospective analysis of the Kaiser Permanente Shoulder Arthroplasty Registry. During which time, we [were] able to track over 5,700 elective shoulder arthroplasties performed in the state of California. During this time, we noted an increase in the incidence of shoulder arthroplasty performed in the health plan, though interestingly there was not a significant increase in the number of surgeons performing these procedures,” Mark T. Dillon, MD, in the Department of Orthopedic Surgery at Kaiser Permanente, told Healio Rheumatology. “Thus, the increase seems to be due to an increase in volume at the individual provider level.”
The researchers determined annual arthroplasty incidence rates per 100,000 patients and estimated adjusted yearly changes with incidence rate ratios. They also compared changes in surgeon volume by year and number of surgeons performing different procedures.
The researchers found the incidence rate increased from 6.1 per 100,000 in 2005 to 13.4 per 100,000 in 2013. Among patients with osteoarthritis, investigators found an increase in use of total shoulder arthroplasty (incidence rate ratio = 1.12) and a decrease in use of hemiarthroplasty (incidence rate ratio = 0.91).
Among patients with rotator cuff arthropathies, investigators discovered an increase in use of reverse total shoulder arthroplasty (incidence rate ratio = 1.33). However, they found no change in the use of hemiarthroplasty (incidence rate ratio = 0.99).
“We also noted that surgeons are favoring the use of total shoulder arthroplasty and reverse total shoulder arthroplasty over hemiarthroplasty, with fewer surgeons utilizing hemiarthroplasty by the end of the study.” – by Will Offit
Disclosure: The researchers report no relevant financial disclosures.
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