![]() ![]() The posterior column is composed of the greater and lesser sciatic notches, posterior wall and dome of the acetabulum, and ischial tuberosity. Its orientation is lateral, downward, and forward. The anterior column is composed of the anterior ilium, anterior wall and dome of the acetabulum, and superior pubic ramus. Acetabulum, located on the lateral surface of the hip bone, is a deep, cup-shaped hemispherical socket. The column principle divides the acetabulum into the anterior and posterior columns and becomes important when considering acetabular fractures and their management. The articulation between the pelvis and the femur is the acetabulum, which is formed by portions of the ilium, ischium, and pubis (White et al., 2011). The acetabulum has articular cartilage in. This synovial ball-and-socket joint allows substantial motion within the sagittal plane, with additional motion in the frontal and transverse planes. ![]() The pelvis provides attachment for muscles that balance and support the trunk and move the legs, the hips, and. The articulation between the pelvis and the femur is the acetabulum, which is formed by portions of the ilium, ischium, and pubis (White et al., 2011). The ring made by the pelvis functions as the birth canal in females. The lip-shaped acetabular labrum is a fibrocartilaginous structure attached to the margin of the acetabulum, increasing the acetabular articular area. As a result, more than half of the femoral head fits within the acetabulum. All three unite in early adulthood at a triangular suture in the acetabulum, the cup-shaped socket that forms the hip joint with the head of the femur (thighbone). The bone on the inner surface of the pelvis deep to the acetabular fossa is termed the quadrilateral plate and has clinical importance in classifying acetabular fractures. The acetabular fossa extends superiorly from the acetabular notch. This depression is bridged with the transverse ligament of the hip, completing the circle and creating the acetabular foramen. The acetabular floor has a rough depression called the acetabular fossa that hosts the ligamentum teres. The acetabular margin forms three quarters of a circle with a deficiency located anteroinferiorly called the acetabular notch. The fusion is complete between 20 and 25 years of age 1. The three bones are initially separated by a Y-shaped triradiate cartilage that begins to fuse after puberty. However, other than qualitative descriptions we found no clinically applicable published references describing a normal pelvis and acetabulum such information is important for designing certain kinds of implants (eg, reconstruction cages). Gross anatomyĪll three bones of the pelvis (the ilium, ischium, and pubis) together form the acetabulum. Published studies of the human hip make frequent reference to the normal pelvis and acetabulum. The acetabulum (plural: acetabula) is the large cup-shaped cavity on the anterolateral aspect of the pelvis that articulates with the femoral head to form the hip joint. ![]()
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