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Blount's disease is a growth disorder of the tibia (shin bone) that causes the lower leg to angle inward, resembling a bowleg. It is also known as "tibia vara". It is named after Walter Putnam Blount (1900–1992), an American pediatric orthopedic surgeon.〔W. P. Blount. Tibia vara: osteochondrosis deformans tibiae. Journal of Bone and Joint Surgery, Boston, 1937, 19: 1-29.〕 It has also been known as Mau-Nilsonne Syndrome, after C. Mau and H. Nilsonne, who published early case reports of the condition.〔Mau, C. (1923/24) Genu varum bedingt durch Tihiaepiphysendefekt bei Kartilaginärer Exostose. Z. orthop. Chir. 44, 383.〕〔Nilsonne, H. (1929) Genu varum mit eigentümlichen Epiphysenveränderungen. Acta chir. scand. 44, 187.〕 ==Causes== Blount's disease occurs in young children and adolescents. The cause is unknown but is thought to be due to the effects of weight on the growth plate. The inner part of the tibia, just below the knee, fails to develop normally, causing angulation of the bone. Unlike bowlegs, which tend to straighten as the child develops, Blount's disease is progressive and the condition worsens. It can cause severe bowing of the legs and can affect one or both legs. This condition is more common among children of African ancestry. It is also associated with obesity, short stature, and early walking. There does not appear to be an obvious genetic factor. 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「Blount's disease」の詳細全文を読む スポンサード リンク
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