Human fetal topographical anatomy of the femoral triangle in relation with change in the hip joint position.

Abstract

Summary: Fetal hip joint is characterized by its highly flexion and lateral rotation although adult anatomy of the femoral nerve and iliofemoral ligament suggested the medial rotation. To investigate topographical anatomy of the femoral nerve, artery and vein in the femoral triangle, we histologically examined 11 fetuses (15-37 weeks). The nerve-vessel topographical relation was basically similar to that in adults, but the fan-like nerve division was seen in the horizontal plane in the smaller specimens in contrast to that included in the sagittal plane in the larger specimens. The medial or internal rotation of the nerve division seemed to occur in late stage fetuses, at birth and at infancy. Blood supply to the head of the femur might be also accelerated by changes in the hip joint position.

Fetal topography of arteries and nerves of muscles of the medial femoral group

“…The main issue of the research in this paper was the study of the intramuscular distribution of nerves and arteries and their interrelations in the medial group of the femoral muscles in human fetuses. When studying this issue, it was revealed that not all the muscles of the medial femoral group are equally intensively supplied with intramuscular nerves and arteries, and not all muscles have the same degree of individual anatomical variability 17 .…”