Medial Unicompartment Knee Replacement. Minimum Five Year Follow‐up

Abstract

Forty‐four medial Marmor unicompartment knee arthroplasties were performed at the Hutt Hospital from 1976 to 1983 on 35 patients. Seventy‐five per cent were rated as excellent or good, using the Hospital for Special Surgery Knee Rating System. Four arthroplasties were revised at an average of 6 years (range: 2–8). two for late degenerative change in the lateral Compartment, one for malposition and one for loosening. There was one late deep infection requiring an arthrodesis at 2 years. It is concluded that medial compartment knee arthroplasty provides satisfactory treatment in the elderly patient, although attention must be directed to technical aspects and patient selection, to afford long‐term success.