. A manual on foot care and shoe fitting for officers of the Navy and Marine corps. ch beneath the instep there arefive layers of well-developed muscles which buttress the archpreventing descent of the latter when continued and excessiveweight is borne. (See illustration No. 2.) The posterior seven bones, forming a compact mass andheld by ligamentous attachments, move very slightly when astep is taken and serve to minimize the shock of impact andact as a recoil mechanism. On this mass—the static portionof the foot—in the shod man, all the weight of locomotion isfirst borne; first aff
. A manual on foot care and shoe fitting for officers of the Navy and Marine corps. ch beneath the instep there arefive layers of well-developed muscles which buttress the archpreventing descent of the latter when continued and excessiveweight is borne. (See illustration No. 2.) The posterior seven bones, forming a compact mass andheld by ligamentous attachments, move very slightly when astep is taken and serve to minimize the shock of impact andact as a recoil mechanism. On this mass—the static portionof the foot—in the shod man, all the weight of locomotion isfirst borne; first affecting the heel and center of the instep. The anterior nineteen bones are controlled mainly bymuscular action—the dynamic portion—and when in usebearing weight, move extensively. From the center of theinstep the weight borne is shifted to the ball of the foot whichspreads medially and laterally presenting an enlarged area tothe walking medium. The tges also spread laterally, medially,and lengthen, gripping the surface. (See illustrations Nos. 3and 4.) 10 FOOT CARE AND SHOE FITTING.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectuniteds, bookyear1920
