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Management of the Failed Medial Unicompartmental Knee Arthroplasty

Crawford, David A., MD; Berend, Keith R., MD; Lombardi, Adolph V., MD, FACS

JAAOS - Journal of the American Academy of Orthopaedic Surgeons: October 15, 2018 - Volume 26 - Issue 20 - p e426–e433
doi: 10.5435/JAAOS-D-17-00107
Review Article

With recent design modifications, proper patient selection, and sound surgical technique, medial unicompartmental knee arthroplasty has demonstrated long-term success in the management of degenerative joint disease. Nevertheless, complications do occur, most often aseptic loosening, tibial fracture, polyethylene wear, bearing dislocation, disease progression, infection, and unexplained pain. Some failures can be managed with retention of the implant, whereas others require revision to total knee arthroplasty (TKA), possibly including augments and stems. Although outcomes of unicompartmental knee arthroplasty may not match those of a primary TKA, they tend to exceed results of revision of a previous TKA.

From the Joint Implant Surgeons, New Albany, OH.

Dr. Crawford or an immediate family member has received research or institutional support from Zimmer Biomet. Dr. Berend or an immediate family member has received royalties from and serves as a paid consultant to Zimmer Biomet; has stock or stock options held in SPR Therapeutics; has received research or institutional support from SPR Therapeutics and Zimmer Biomet; and serves as a board member, owner, officer, or committee member of The Knee Society. Dr. Lombardi or an immediate family member has received royalties from Innomed, Orthosensor, and Zimmer Biomet; serves as a paid consultant to Orthosensor, Pacira Pharmaceuticals, and Zimmer Biomet; has stock or stock options held in SPR Therapeutics; has received research or institutional support from SPR Therapeutics and Zimmer Biomet; and serves as a board member, owner, officer, or committee member of The Hip Society, The Knee Society, Mount Carmel Education Center at New Albany, and Operation Walk USA.

© 2018 by American Academy of Orthopaedic Surgeons
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