Case ReportsPopliteus Avulsion Fracture After Unicompartmental Arthroplasty A Case ReportInclan, Paul M. MD1; Barrack, Robert L. MD1; Matava, Matthew J. MD1,a Author Information 1Department of Orthopaedic Surgery, Washington University in St. Louis, Chesterfield, MO aE-mail address for M.J. Matav: [email protected]. Investigation performed at the Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (https://links.lww.com/JBJSCC/B995). JBJS Case Connector 13(1):e22.00477, January-March 2023. | DOI: 10.2106/JBJS.CC.22.00477 Buy Metrics Abstract Case: An active 64-year-old patient presented with new-onset lateral knee pain 42 days after an uncomplicated medial unicompartmental knee arthroplasty (UKA). Magnetic resonance imaging and diagnostic injection of local anesthetic identified an avulsion fracture of the popliteus tendon as the source of discomfort. Repair of the tendon to its native footprint was performed with suture anchor fixation. The patient was pain-free and returned to work without restrictions at 12 weeks. Conclusion: We identify a unique cause of knee pain after UKA—avulsion of the popliteus tendon. Successful management of this condition included anatomic repair of the tendon with suture anchor fixation. Copyright © 2023 by The Journal of Bone and Joint Surgery, Incorporated
