MINIMUM 10 YEAR CLINICAL, RADIOGRAPHIC AND DENSITOMETRIC FOLLOW UP OF AN OFF THE SHELF “LATERAL FLARE” THR FEMORAL COMPONENT DESIGN

Abstract

This is a report on the first 100 THR patients treated with an off the shelf version of a novel “Lateral Flare” femoral component. A prior published report has documented the up to 19 year follow up of custom fabricated stems of an identical design concept as being successful in patients < 55 years of age.

HHS, radiographic measure of bone morphology, implant stability and densitometric measure of bone response after THR with an off the shelf version, “Revelation Lateral Flare”, femoral component, confirm excellent bone preservation and implant stability with this design concept. DEXA analysis of a 20 consecutive patient subset of these 100 patients, documented preservation of more than 95% of proximal femoral bone stock in Gruen zone 1 and 102% of total bone stock in Gruen zones 1–7. Implant stability measurement documented < 0.5mm of subsidence in spite of patients being permitted immediate post-operative full weight bearing activity.

These findings support reasonable optimism for expectation of successful long term results being achievable with the use of an off the shelf version of the “Lateral Flare” design concept, in young, high demand patients suffering with early onset osteoarthrosis of the hip.