Hip bone sacroiliac joint. Each hip bone is connected to the corresponding femur (thigh bone) (forming the primary connection between the bones of the lower limb and the axial skeleton) through the large ball and socket joint of the hip. The hip bone is formed by three parts: ilium, ischium, and pubis. At birth, these three components are separated by hyaline cartilage. They join each other in a Y-shaped portion of cartilage in the acetabulum. By the end of puberty the three regions will have fused together, and by the age of 25 they will have ossified. The two hip bones join
X-ray of hip dysplasia be drawn in the pediatric pelvis assessing hip dysplasia are as follows: In the adult hip there are important landmarks to be recognized on plain film radiographs (Figure 5): In the adult hip, normal joint space ranges from 3 to 5 mm and must be uniform. Values under 2 mm are consistent with joint space narrowing. The most important measurements are detailed in Figure 6 and Table 1. Figure 6: Acetabular depth value under 250 characterizes the dysplastic hip. In normal conditions the acetabulum covers 75% of the femoral head. This coverage can be determined by three different measurements: lateral