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A Colles' fracture, is a fracture of the distal radius in the forearm with dorsal (posterior) and radial displacement of the wrist and hand.〔Solomon et al., Apley's system of orthopaedics and fractures, 9th ed., p.772〕 The fracture is sometimes referred to as a "dinner fork" or "bayonet" deformity due to the shape of the resultant forearm. Colles' fractures are often seen in people with osteoporosis. == Terminology == The term of Colles fracture is classically used to describe a fracture at the distal end of the radius, at its cortico-cancellous junction. However, now the term tends to be used loosely to describe any fracture of the distal radius, with or without involvement of the ulna, that has dorsal displacement of the fracture fragments. Colles himself described it as a fracture that “takes place at about an inch and a half (38mm) above the carpal extremity of the radius” and “the carpus and the base of metacarpus appears to be thrown backward”.〔Colles A 2006 On the fracture of the carpal extremity of the radius. Edinb Med Surg J. 1814;10:181. Clin Orthop Relat Res 445:5-7.〕 The classic Colles fracture has the following characteristics: * Transverse fracture of the radius * 2.5 cm (0.98 inches) proximal to the radio-carpal joint * dorsal displacement and dorsal angulation, together with radial tilt〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Colles' fracture」の詳細全文を読む スポンサード リンク
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