A treatise on orthopedic surgery . Voluntary dorsal flexion. Voluntary plantar flexion. In tliese attitudes ttie astragalus moves with the foot upon the leg bones, ascontrasted with adduction and abduction, in which the centre of motion is belowthe astragalus. upon the heels. Such a walk is necessarily jarring and ungrace-ful, and if it is-not the result of weakness and deformity it pre-disposes to them because of the disuse of proper function. One means of making the leverage function difficult is thecustom of turning the feet outward. Outward rotation of thelimbs is normal in the passive att
A treatise on orthopedic surgery . Voluntary dorsal flexion. Voluntary plantar flexion. In tliese attitudes ttie astragalus moves with the foot upon the leg bones, ascontrasted with adduction and abduction, in which the centre of motion is belowthe astragalus. upon the heels. Such a walk is necessarily jarring and ungrace-ful, and if it is-not the result of weakness and deformity it pre-disposes to them because of the disuse of proper function. One means of making the leverage function difficult is thecustom of turning the feet outward. Outward rotation of thelimbs is normal in the passive attitude because it enlarges thebase of support and thus relieves the muscles. On this veryaccount it is the improper attitude for activity because the strainfalls upon the inner border of the foot, or to the inner side of thefulcrum,, and makes the proper exercise of muscular power andalternation of postures imj)ossible. In other words, the attitudenormal when the foot is used as a passive support is abnormalwhen it is in active use
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Keywords: ., bookauthorwhitmanr, bookcentury1900, bookdecade1910, bookyear1910
