Where is the femoral head located in a posterior hip dislocation?

• A. Medial, anterior, and inferior
• B. Lateral, posterior, and superior
• C. Central
• D. Inferior and lateral

Answer: (B)

In a posterior hip dislocation, the femoral head typically moves away from its normal position, often being displaced posteriorly and superiorly within the hip joint. This movement is generally caused by trauma, such as a car accident, where the knee is impacted and the femur is forced posteriorly, leading to the dislocation.

The characteristic displacement of the femoral head in this situation results in its positioning being described as lateral and posterior relative to the acetabulum, which is the socket of the hip joint. The superior component of the displacement can also be noted due to the alignment of the femoral head in relation to the pelvic structures.

Understanding these mechanics of a posterior hip dislocation is essential in both diagnosis and treatment, as recognizing the position of the femoral head can guide appropriate reduction techniques and help prevent long-term complications such as avascular necrosis or osteoarthritis.