A treatise on orthopedic surgery . exed. The Foot in Activity.—The second function of the foot is asa lever to raise and to proj)el the body. The calf muscles supplythe power and the heads of the metatarsal bones serve as thefulcrum on which the weight is to be lifted. When the foot isused as a lever, it should be held in such relation to the leg thatthe line of weight, passing downward through the centre of the 698 OSTHOPEDIC SUEGEEY. knee and ankle-joints, is continued over the second toe or prac-tically the centre of the foot. As the body is lifted over the ful-crum the leg is turned outwar
A treatise on orthopedic surgery . exed. The Foot in Activity.—The second function of the foot is asa lever to raise and to proj)el the body. The calf muscles supplythe power and the heads of the metatarsal bones serve as thefulcrum on which the weight is to be lifted. When the foot isused as a lever, it should be held in such relation to the leg thatthe line of weight, passing downward through the centre of the 698 OSTHOPEDIC SUEGEEY. knee and ankle-joints, is continued over the second toe or prac-tically the centre of the foot. As the body is lifted over the ful-crum the leg is turned outward in its relation to the forefoot,because the inner side of the fulcrum, formed by the first meta-tarsal bone, is longer than its outer side; thus the strain isdirected toward the outer and stronger side of the foot (). In the proper walk, which is the best illustration of the lever-age function, the feet should be held practically parallel to oneanother, so that the line of strain may fall through the centre of Fig.
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Keywords: ., bookauthorwhitmanr, bookcentury1900, bookdecade1910, bookyear1910
