Question

• Kayla was a passenger on a bus involved in an accident. When paramedics arrived on the scene, they found Kayla lying on her side in the aisle. Upon examination, they found that her right leg appeared shorter than her left leg. They also noticed that even slight hip movement caused considerable pain. Suspecting a hip dislocation, they stabilised and transported her. In the ER, dislocation of her right hip was confirmed by X-ray. Kayla was sedated to relax the muscles around the hip, and then doctors placed her in the supine position and performed a closed reduction ("popped" the femur back in place).

  Which bones are not in the right place when a hip is dislocated?

  Which bones fuse together to form the hip bone?

  The sedation that Kayla was given was to relax the large muscles of the thigh and buttocks that attach to the proximal end of the femur. To which structures on the femur do these muscles attach to?

Answer 1

—Hip dislocation is the dislocation of hip joint. Hip joint is the synovial joint formed by the articulation of femoral head and acetabulum of hip bone or the pelvic bone. So the two bones involved in hip dislocation are femur and hip bone.
During dislocation of hip the femoral head may come out of the acetabulum partially or completely.
— The two bones that fuse to form the hip joint are femur and hip bone. The head of femur articulates with the acetabulum of hip bone.
— During hip reduction the hip joint needs to be relaxed. The muscles causing hip extension, flexion, abduction or adduction needs to be relaxed to keep hip joint in neutral position. The muscles attached to proximal femur are iliacus, gluteal, psoas major, piriformis, adductor magnus, adductor longus and brevis.