title: Management of the severe varus and valgus knee using the low contact stress rotating platform.
abstract: Many surgeons feel the use of an unconstrained mobile-bearing knee is contraindicated in cases of severe varus and valgus deformity. In the author's opinion the Sigma LCS rotating-platform knee system can be used in virtually every primary knee irrespective of deformity. The key is to maintain flexion stability by not releasing the lateral collateral ligament in a valgus knee or the superficial medial collateral ligament in the varus knee.
authors.affiliation: Outcomes Unit, Musgrave Park Hospital, Belfast, Northern Ireland.
authors.forename: David
authors.initials: D
authors.lastname: Beverland
mesh_terms: D006801:Humans; D007717:Knee / Q000002:abnormalities* / Q000601:surgery*; D007720:Knee Prosthesis; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D012720:Severity of Illness Index; D013314:Stress, Mechanical