Lim Hong-Chul, Shon Won-Yong, Kim Seung-Ju, Bae Ji-Hoon
Department of Orthopaedic Surgery, Korea University Guro Hospital, Seoul, Republic of Korea.
Department of Orthopaedic Surgery, Korea University Ansan Hospital, Ansan, Republic of Korea.
Knee. 2014 Jan;21(1):340-2. doi: 10.1016/j.knee.2013.07.012. Epub 2013 Aug 9.
Meniscal bearing fracture is a rare complication of phase III Oxford unicompartmental knee replacement (UKR). We report a case of a meniscal bearing fracture that occurred 7 years after phase III Oxford medial UKR. The meniscal bearing showed uneven delamination of the polyethylene in the thinnest articular surface and an impingement lesion. This lesion initiated a fatigue crack that propagated to cause failure of the meniscal bearing. This is the first report of a meniscal bearing fracture without a posterior marker wire.