The Ortolani click test detects dislocation of which joint?

The Ortolani click test detects dislocation of which joint?

• A. Salter Harris
• B. Traumatic partial dislocation
• C. Avascular necrosis
• D. Congenital hip dislocation

Answer: (D)

The test is about hip stability in a newborn. The Ortolani test checks for congenital dislocation of the hip (developmental dysplasia of the hip) by trying to reduce a dislocated femoral head back into the acetabulum. With the infant supine, the hip is flexed to about 90 degrees and gently abducted; if a hip is dislocated, the femoral head may slip back into the socket, producing a palpable or audible clunk—the Ortolani sign. A positive finding points to congenital hip dislocation. This is not about growth plate injuries (Salter-Harris), avascular necrosis, or traumatic partial dislocations, which involve different conditions or mechanisms.

The test is about hip stability in a newborn. The Ortolani test checks for congenital dislocation of the hip (developmental dysplasia of the hip) by trying to reduce a dislocated femoral head back into the acetabulum. With the infant supine, the hip is flexed to about 90 degrees and gently abducted; if a hip is dislocated, the femoral head may slip back into the socket, producing a palpable or audible clunk—the Ortolani sign. A positive finding points to congenital hip dislocation.

This is not about growth plate injuries (Salter-Harris), avascular necrosis, or traumatic partial dislocations, which involve different conditions or mechanisms.