. The diseases of children : medical and surgical. Fig. 40.—Shows how sitting cross-legged produces Curvature of the Tibiae. Theright foot is resting on the ground. Fig. 41.—An ordinary caseof Bow-leg. pressure produces an outward bowing of the whole of the opposite limb. Itis true that the curve of bow-leg is not quite even, and is usually sharpestat the weakest part of the leg—-the lower third of the tibia ; much morerarely there is a true genu varimi^ or bowing out, mainly at the knee itself;in such cases the head of the fibula is usually very prominent. Double genu valgum occurs when the c
. The diseases of children : medical and surgical. Fig. 40.—Shows how sitting cross-legged produces Curvature of the Tibiae. Theright foot is resting on the ground. Fig. 41.—An ordinary caseof Bow-leg. pressure produces an outward bowing of the whole of the opposite limb. Itis true that the curve of bow-leg is not quite even, and is usually sharpestat the weakest part of the leg—-the lower third of the tibia ; much morerarely there is a true genu varimi^ or bowing out, mainly at the knee itself;in such cases the head of the fibula is usually very prominent. Double genu valgum occurs when the changes in both legs begin at thesame time and go on at the same rate ; double bow-leg results either fromlocal changes opposite to those of knock-knee, or, more often, isstarted by the position assumed in sitting by the child, and increased by theweight of the body subsequently. Thus it is common to see children sittingon the floor with both thighs somewhat abducted and rotated outwards ; inthis position the limbs rest on the hips
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