CLINICAL COMPARISON OF THE MILLER-GALANTE-I AND AMK TOTAL KNEE SYSTEMS

One hundred patients with primary osteoarthritis of the knee were pros pectively randomized to assess the clinical outcome between two contem porary knee designs, namely the Anatomic Modular Knee (AMK, DePuy, War saw, IN) and the Miller Galante I (MG I, Zimmer, Warsaw, IN). In addit ion, patients were stratified by surgeon. While the clinical outcome m easured by the Hospital for Special Surgery knee scores was similar fo r both groups, there was a difference in the number of complications r equiring further surgery. Extensor mechanism complications requiring f urther surgery occurred in four patients (3 MG I and 1 AMK); three pat ients in the MG I group required a distal realignment procedure for pa tellar dislocation, while none of the AMK patients had this complicati on. There was, however, one patellar fracture in the AMK group that re quired an open reduction. The authors postulate that the major differe nce contributing to patellofemoral complications relates to the patell ofemoral design and patellar tracking, with the more anatomic AMK femo ral component having better patellar tracking and stability clinically .