Anatomia general > Articulaciones; sistema articular > Articulaciones de los miembros inferiores > Articulaciones de la porción libre del miembro inferior > Articulaciones sinoviales de la porción libre del miembro inferior > Articulación de la cadera; Articulación coxofemoral > Ligamento de la cabeza del fémur
The ligament of head of femur (ligamentum teres femoris) is a triangular, somewhat flattened band implanted by its apex into the antero-superior part of the fovea capitis femoris; its base is attached by two bands, one into either side of the acetabular notch, and between these bony attachments it blends with the transverse ligament. It is ensheathed by the synovial membrane, and varies greatly in strength in different subjects; occasionally only the synovial fold exists, and in rare cases even this is absent. The ligament is made tense when the thigh is semiflexed and the limb then adducted or rotated outward; it is, on the other hand, relaxed when the limb is abducted. It has, however, but little influence as a ligament.