![]() ![]() The posterior column is composed of the greater and lesser sciatic notches, posterior wall and dome of the acetabulum, and ischial tuberosity. The anterior column is composed of the anterior ilium, anterior wall and dome of the acetabulum, and superior pubic ramus. The column principle divides the acetabulum into the anterior and posterior columns and becomes important when considering acetabular fractures and their management. The radiological roof is simply a radiological line. The outline of the roof represents only a small 2-3 mm region of the acetabulum region. 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. The radiological roof, or sourcil, is a line produced by the X-ray beam tangential to the most cranial portion of the acetabulum. 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. Key words: acetabulum chondrification ossification develop-ment hip joint morphogenesis INTRODUCTION The pelvis connects the axial skeleton to the appendic-ular skeleton, the primary function of which is transfer of the weight of the upper body into the lower limbs dur-ing standing or walking. 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 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 hip labrum (also known as the acetabular labrum) is a ring of tough fibrocartilage that covers the rim of the acetabulum. When you move your hip, the head of your femur rotates within the acetabulum. The rounded head of the femur fits inside the cup-shaped acetabulum. The acetabular margin forms three quarters of a circle with a deficiency located anteroinferiorly called the acetabular notch. Due to the depth of the acetabulum, it can encompass almost the entire head of the femur. The concave, cup-shaped acetabulum (part of the pelvis) is the socket. 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. Gross anatomyĪll three bones of the pelvis (the ilium, ischium, and pubis) together form the 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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