title: [Unicompartmental knee arthroplasty and patellar problems].
abstract: Impingement between the anterior border of the prosthesis and the patella is exceptionnal. The design of the prosthesis, in particular over-thickness, can be the cause of conflict with the patella during flexion.The prosthesis diminishes valgus deformity and hence femoro-patellar strains.Patellar operations, patellectomy or realignment of the extensor apparatus do not seem justified.Femoro-patellar involvement is not a contra-indication to unicompartmental arthroplasty.
authors.affiliation: Service Chirurgie Orthopédie Traumatologie II, CHU, Hôpital Maison Blanche, 45, rue Cognacq Jay, F-51092, Reims Cedex, France.
authors.forename: P
authors.initials: P
authors.lastname: Ségal
authors.forename: G
authors.initials: G
authors.lastname: Girard
authors.forename: D
authors.initials: D
authors.lastname: Gandon
authors.forename: R
authors.initials: R
authors.lastname: Servagent