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Total knee arthroplasty (TKA) is commonly performed in the geriatric population in which osteoporosis (OP) is a common medical condition. This study aimed to compare complications in Medicare patients undergoing primary TKA with or without OP. Materials and methods: The Medicare Standard Analytical Files were analyzed from 2005 to 2010, and patients undergoing primary TKA with and without OP were identified. Perioperative complications and revision rates were compared between groups. Results: Osteoporosis patients undergoing TKA had a higher rate of periprosthetic fracture, but a decreased rate of revision surgery. In the postoperative period, OP patients had an increased risk of surgical wound complications and thromboembolic complications. Conclusion: Caution should be taken when performing TKA in osteoporotic patients.

Osteoporosis Patients have Higher Rates of Periprosthetic Fracture but Lower Rates of All-cause Revision Surgery following Total Knee Arthroplasty