Secure coverage helps keep the femoral head aligned within the acetabulum during joint growth. When the socket is shallow, the femoral head may remain unstable or become partially or completely displaced. This altered relationship can interfere with normal development of both structures, which explains why recognizing DDH early is important for preserving hip alignment and function.
Displacement can range from instability to partial or complete separation of the femoral head from the acetabulum. As alignment worsens, normal joint growth may be altered rather than simply reflecting a temporary position abnormality. This spectrum helps explain why clinical findings and imaging are used together to determine the extent of involvement and guide management.
Clinical maneuvers and imaging provide complementary information. The Ortolani and Barlow maneuvers help identify abnormal hip stability during examination, while ultrasound or radiography shows the developing joint using an age-appropriate method. Combining these approaches can support earlier recognition of misalignment or inadequate formation than relying on either examination or imaging alone.
These maneuvers are components of the clinical assessment for hip instability. Their role is to help identify a hip that is not maintaining normal alignment during examination, prompting consideration of age-appropriate imaging. Because DDH includes a range of abnormalities, examination findings contribute to deciding whether further evaluation or treatment is needed.
The choice depends on the patient’s age and the developmental stage of the hip. Ultrasound and radiography are both identified as useful imaging options, but they are not interchangeable at every age. Selecting the age-appropriate study helps clinicians evaluate alignment, femoral-head coverage, and acetabular development when clinical assessment raises concern.
Management is matched to the severity and developmental status of the hip. A positioning device such as a harness may promote stable alignment and support normal development, while reduction is used when the hip requires restoration of position. Surgery is another option when less invasive management is insufficient. Timely treatment aims to reduce later pain, gait impairment, and early osteoarthritis.