OMNIFLEX MODULAR FEMORAL COMPONENT - 2-YEAR TO 5-YEAR RESULTS

A prospective study was completed on 106 consecutive cementless arthro plasties (94 patients) to determine the clinical and radiographic outc ome. Ninety-two hips (81 patients) had complete follow-up data. The av erage age was 46 years, and the average follow-up period,vas 41 months (24-63 months). Clinically 94% had no or slight pain. Two patients ha d activity-limiting thigh pain. Most patients bad no or slight limp an d walked without support. Patients had similar outcomes regardless of their bone type. Ninety-three percent of hips were radiographically st able. Six were loose; three of those had major intraoperative fracture s. Stable stems were characterized by middle and distal zone endosteal condensation and cortical hypertrophy; these occurred primarily in th e distal zones for unstable implants. Calcar resorption was noted in 3 8% of hips with collars and in 68% without collars (p = 0.015). Endost eal erosions were seen in six hips (6.5%) and were related only to the patient's activity level (p = 0.021). Seven hips were revised, two fo r delayed sepsis, one for loosening after trauma, one for intraoperati ve fracture, and three for aseptic loosening. The Omniflex implant sys tem provides acceptable but not outstanding results in a wide array of femoral geometries. The early difficulty with femoral fractures has b een significantly reduced by using a prophylactic cerclage cable.