Organogenetic analysis of the variation of insertions of the fibular collateral ligament and the biceps muscle at the knee

: Concerning a displacement in distal direction of the insertions of the ligamentum collaterale fibulare and of the tendo musculi bicipitis femoris on the superior epiphysis of the fibula, the authors describe in detail and in millimetrical scale the permanent existence of bundles, additionnal to the main insertions known up to now, and of a sheath envelopping the ligament. The study of the organogenesis of these formations, followed by their dissection at an adult stage allow to estimate the genetical, mechanical, and constitutional factors explaining the usual variations of these structures.