A treatise on orthopedic surgery . mongthose who are free fromweakness and disability andfrom the influences of un-favorable surroundings; andsuch attitudes are, of course,more likely to persist in thosewho were once obliged toassume them because ofweakness and the weakness of struc-ture or function may be aninherited j)eculiarity, or itmay be induced by disease orby improper surroundings,influences that may continuefor many years and thusserve to check the naturaltendency toward cure. The observations on the outgrowth of deformity have beenconfined, as a rule, to the period of
A treatise on orthopedic surgery . mongthose who are free fromweakness and disability andfrom the influences of un-favorable surroundings; andsuch attitudes are, of course,more likely to persist in thosewho were once obliged toassume them because ofweakness and the weakness of struc-ture or function may be aninherited j)eculiarity, or itmay be induced by disease orby improper surroundings,influences that may continuefor many years and thusserve to check the naturaltendency toward cure. The observations on the outgrowth of deformity have beenconfined, as a rule, to the period of childhood, and most oftenthey have been made with reference to the more serious gradesof distortion, which are the direct result of rhachitis. It mustbe borne in mind, however, that the true significance of thesedeformities in the adult must be judged from the aestheticrather than from the medical point of view, and although theextreme degrees of bow-leg and knock-knee are relatively rare,^ New York Medical Eecord, July 30, 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. 397.
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