[Unicompartmental knee arthroplasty and patellar problems].

Ségal, P; Girard, G; Gandon, D; Servagent, R · Eur J Orthop Surg Traumatol · 1995

expert_opinion · Level V

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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.

Anatomy