Acetabular notch
Encyclopedia
The acetabulum
Acetabulum
The acetabulum is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint.-Structure:...

 presents below a deep notch, the acetabular notch, which is continuous with a circular non-articular depression, the acetabular fossa
Acetabular fossa
The acetabular fossa is a fossa located at the centre of the acetabulum. It is occupied by the ligament of head of femur....

, at the bottom of the cavity: this depression is perforated by numerous apertures, and lodges a mass of fat.

The notch is converted into a foramen by the transverse acetabular ligament
Transverse acetabular ligament
The Transverse Acetabular Ligament is in reality a portion of the acetabular labrum, though differing from it in having no cartilage cells among its fibers....

; through the foramen nutrient vessels and nerves enter the joint; the margins of the notch serve for the attachment of the ligament of the head of the femur.
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