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Subchondral fracture begins from the bone resorption area in osteonecrosis of the femoral head: a micro-computerised tomography study.
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Abstract
For successful joint preservation in osteonecrosis of the femoral head (ONFH), it is important to understand the mechanism of collapse. The purpose of this study was to investigate the initiation of subchondral fracture in ONFH by using micro-CT imaging of the whole femoral head, focusing on the three-dimensional relationship between the subchondral fracture and the bone resorption area.