where is the acetabulum located in the body
Acetabulum The acetabulum /æsəˈtæbjʊləm/ (cotyloid cavity) is a concave surface of a pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint.[1][2]
Ulna The ulna is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm. It runs parallel to the radius, the other long bone in the forearm, and is the larger and longer of the two.