The thickness and collagen content of tendon relative to the cross-sectional area of muscle during growth

Abstract
The tendon of peroneus brevis is thinner than that of tibialis anterior in the foetal and three-week old rabbit but thicker in the adult. At three weeks there is no difference between these muscles in the ratio of the thickness of collagen in their tendons to the cross-sectional area of their muscle fasciculi. Thereafter the growth of tendon collagen is such that this ratio increases in peroneus brevis but decreases in tibialis anterior, diverging towards their separate adult values.

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