Adolescent and Young Adult Hip Dysplasia

David D. Spence, Derek M. Kelly, Marc J. Mihalko and James L. Guyton

Disclosures

Curr Orthop Pract. 2013;24(6):567-575. 

In This Article

Associated Conditions

The primary abnormality in both infantile and adolescent hip dysplasia is a malformed acetabulum affecting the weightbearing zone, which can lead to instability of the femoral head. This produces overload of the labrum and acetabular rim resulting in cartilage damage, labral tear, acetabular rim fracture, or ligamentous laxity. Abnormal anterolateral femoral head-neck offset, acetabular retroversion, coxa valga, and femoral anteversion also may be present and contribute to the deformity resulting in femoral acetabular impingement, instability, or occasionally both. Acetabular labral tears have been reported to occur in association with even subtle structural hip abnormalities.[14] Wenger et al.[14] found that 87% of patients with a labral tear had at least one structural hip abnormality, some of which were mild. They noted that the locations of the labral tears reinforce the theory that anterior acetabular deficiency is one of the main mechanisms of injury. In addition, they noted that some labral tears herald the onset of osteoarthritis.[14]

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