title: Dissecting a popliteal cyst after failed unicompartmental knee arthroplasty.
abstract: This report documents the first case of a popliteal cyst in a knee with failed unicompartmental knee arthroplasty (UKA). The cyst was treated successfully with the creation of a small communication hole between the posteromedial compartment and the popliteal cyst under direct arthroscopic visualization. This was followed by the replacement of a worn polyethylene insert via a small arthrotomy. Three months later, the popliteal mass had disappeared. This case suggests that a dissecting popliteal cyst may occur after UKA as one of the signs of a malfunction. It also suggests that treatment should be directed toward the joint and not the cyst itself.
authors.affiliation: Department of Orthopaedics, Kahoku Central Hospital, Kahoku-gun, Ishikawa Prefecture, Japan. yamakado@nsknet.or.jp
authors.forename: Kotaro
authors.initials: K
authors.lastname: Yamakado
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D003646:Debridement; D005260:Female; D006801:Humans; D010003:Osteoarthritis / Q000601:surgery; D011151:Popliteal Cyst / Q000209:etiology / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology / Q000601:surgery*; D012008:Recurrence; D013396:Suction