From the Research
Lateral uncovering of the femoral heads refers to a radiographic finding where the outer portions of the femoral heads are not properly covered by the acetabulum, indicating hip dysplasia or acetabular dysplasia. This condition is characterized by the lateral edge of the femoral head extending beyond the lateral edge of the acetabulum, which can be observed on an anteroposterior pelvic radiograph. The degree of uncovering can be quantified using measurements like the center-edge angle of Wiberg, where angles less than 20-25 degrees indicate significant dysplasia, as noted in a study published in 2020 1. Key points to consider include:
- Lateral uncovering of the femoral heads is a sign of hip dysplasia or acetabular dysplasia
- The condition can lead to abnormal stress distribution across the hip joint, resulting in premature osteoarthritis, labral tears, and hip pain
- Treatment options range from observation to surgical intervention, such as periacetabular osteotomy, depending on the severity and associated symptoms
- A comprehensive evaluation of radiographic parameters is necessary to guide treatment, as an isolated assessment of the lateral center-edge angle may be oversimplistic, as suggested by a study published in 2019 2.