A treatise on orthopedic surgery . A type of deformity in which the prog-nosis as regards outgrowth is bad. 600 OETHOPEDIC SUBGEBY. yet iu the minor grade both deformities are very common inadult males and in all probability in adult females also. In 1887 the ^riter^ noted among 2000 adult males observedon the streets of Boston 400 cases of bow-leg and 32 cases ofknock-knee. One may assume, then, that the legs of about oneadult male in five deviate more or less from the line of sym-metry—a conclusion that has been confirmed by many subse-quent observations. It may be admitted that a certain nu
A treatise on orthopedic surgery . A type of deformity in which the prog-nosis as regards outgrowth is bad. 600 OETHOPEDIC SUBGEBY. yet iu the minor grade both deformities are very common inadult males and in all probability in adult females also. In 1887 the ^riter^ noted among 2000 adult males observedon the streets of Boston 400 cases of bow-leg and 32 cases ofknock-knee. One may assume, then, that the legs of about oneadult male in five deviate more or less from the line of sym-metry—a conclusion that has been confirmed by many subse-quent observations. It may be admitted that a certain number Fig. Extreme deformities, the result of infantile ihadiitib The left leg forms prac-tically a right angle with the thigh. (See Fig. 401.) of the distortions under consideration are acquired duringadolescence, but it is probable that the greater number of thosethat may be noted in walkers upon the streets represent theincomplete outgrowth of a deformity of childhood. The statement is often made that these distortions of the legsare common in childhood but rare in adult life. Just what the^ N. Y. Med. Record, July 30, 1887. DEFORMITIES OF BONES OF LOWEB EXTEEMITY. 601 proportion may be in childhood it is impossible to say, but itis not likely to be greater than one in five. One must concludethat statistics, on which such statements are based, have beenmade up from the records of hospitals where it is unusual foran adult to apply for the treatment of bow-leg, to which he hasbecome accustomed since childhood, unless the deformity isextreme or causes discomfort. Granting that the power of natur
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