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Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_10 | Pages 110 - 110
1 May 2016
Wada H Mishima H Yoshizawa T Sugaya H Nishino T Yamazaki M
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Introduction

Hydroxyapatite and poly-L-lactide (HA/PLLA) composites are osteoconductive and biodegradable. They have already been used clinically to treat fractured bones by inducing osteosynthesis and serving as the bone filling material. During revision of total hip arthroplasty, we have grafted bone onto the bone defect and covered it with an HA/PLLA mesh instead of using a metal mesh on the non-load bearing portion of the cup (Figure 1). However, whether the interface between the HA/PLLA and the titanium alloy cup was stable remains unclear.

Objectives

The purpose of this study was to determine and compare the histological osteoconductivity and osteoinductivity of HA/PLLA and titanium alloy.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_10 | Pages 79 - 79
1 May 2016
Totsuka S Mishima H Wada H Yoshizawa T Sugaya H Nishino T Yamazaki M
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Introduction

Migration of the trial femoral head is a rarely occurring complication of total hip arthroplasty (THA) performed using the anterolateral approach (ALA). This migration of the trial femoral head under the rectus femoris is extremely risky because of the anatomical situation. Analyzing the morphological character of a case of migration may help us to avoid this risk.

Objective

We analyzed the three-dimensional bone morphology using computed tomography (CT) scan images to investigate the physiological characteristics of five migration cases.