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Updated: Feb 7, 2026

Author Spotlight: Investigating the Mechanism of Action of Acupotomy in Treating Knee Osteoarthritis
Published on: October 20, 2023
Knee Osteoarthritis with Chronic Quadriceps Tendon Rupture Treated with Total Knee Arthroplasty and Extensor
Allison Z Piatek1, Patrick Lee1, Michael J DeRogatis1
1Departments of Orthopaedic Surgery (A.Z.P., P.L., M.J.D., and P.S.I.) and Radiology (D.A.B.), New York-Presbyterian Hospital, New York, NY.
Case:
A 51-year-old male construction worker with a history of chronic quadriceps tendon rupture presented with no active knee extension and tricompartmental knee osteoarthritis. He underwent simultaneous total knee arthroplasty and extensor mechanism allograft reconstruction. At 4 years postoperatively, the patient had pain-free knee function and active extension.
Conclusion:
The combination of a chronic quadriceps tendon rupture with lack of active knee extension and knee osteoarthritis is a rare and challenging problem. To our knowledge, this combined diagnosis and the treatment described in this case report have not been reported previously in the literature.
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