Abstract
The distal radius constitutes a proximal part of the wrist joint, which bears axial load from the carpal bones. Based on the biomechanical experiments, the load transmitted from the carpal bones to the distal articular surface of the radius is greater to the lunate fossa than the scaphoid fossa. The findings are consistent with the results obtained from HR-pQCT analysis of the distal radius. As ageing, bone mineral densities of the distal radius decrease, and structures of the cortical and trabecular bones also deteriorate. Such deterioration can be prevented by osteoporotic medicines such as PTH or bisphosphonate. Denosumab has been shown to increase mechanical indices of the bone structure of the distal radius. The distal radius of the individual is fractured when the load over approximately 5 times (2.5SD) of the weight is applied. It is possible to predict load of fracture in the distal radius from the results of DXA derived BMD or HR-pQCT derived bone parameters. We should not miss the opportunity of treatment for osteoporosis when the patients with fragility distal radius fracture are seen.
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