[The organogenic development of the human peroneal muscle of the IVth digit from the peroneal muscle of the Vth digit and the short peroneal muscle from the viewpoint of evolutive myology].

The preliminary author's investigations revealed, that the mm. peronei digitorum group in Mammalia (including Man) underwent its own morphological evolution. The author failed to establish the facts that indicated the homology between the above mentioned muscles and m. extensor digitorum brevis. But, at present due to the lack of detailed determinations of organogenesis of mm. peronei digitorum and of m. peroneus brevis, it was not possible to prove the above mentioned indications. The observations on organogenesis of the respective muscles, carried out at present upon 13 human embryos with 12 to 32 mm crown-rump length and 5 fetuses with 35 to 65 mm crown-rump length, revealed that, mm. peronei digitorum primordium initiated its development as a muscle of two fingers (m. peroneus digiti IV. et m. peroneus digiti V), passed through its one-finger form (m. peroneus digiti V) and usually terminated with its complete reduction.