The Vascular Evaluation of Femoral Head Remnant after Resurfacing Hip Arthroplasty
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RESURFACING HIP ARTHROPLASTY +*Hananouchi, T; *Sugano, N; *Nishii, T; *Sakai, T; **Miki, H;**Lee, SB; **Ohzono, K; *Yoshikawa, H +*Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine [email protected] Introduction: Metal on metal resurfacing hip arthroplasty (RHA) has been getting popularity due to its concept of bone conservation, stability, and expected longevity. However, postoperative femoral neck fracture is the most serious complication in RHA and the pathomechanism of the fracture is still controversial[1-3]. Some reports suggested that the femoral neck fracture after RHA is derived from avascular necrosis of the femoral head due to the operative procedures[4,5]. Although it has been reported the blood flow in the femoral head was decreased by the femoral preparation or femoral notching, the vasculature of the femoral head remnant (FHR) after RHA has not been visualized yet. The purpose of this study was to investigate the effect of femoral procedures on the vasculature of FHR quantitatively with a micro CT after RHA using resected femoral heads and plastic replica femoral implants.
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