page_title: Hip dislocation
section_title: Hip dysplasia
hierarchical_section_title: Hip dislocation / Diagnosis / Classification / Hip dysplasia
caption_attribution_description: English: Congenital dislocation of the left hip. Closed arrow marks the acetabulum, open arrow the femoral head.
context_page_description: A hip dislocation is a disruption of the joint between the femur and pelvis. Specifically it is when the ball–shaped head of the femur comes out of the cup–shaped acetabulum of the pelvis. Symptoms typically include pain and an inability to move the hip. Complications may include avascular necrosis of the hip, injury to the sciatic nerve, or arthritis.
  Dislocations are typically due to significant trauma such as a motor vehicle collision or fall from height. Often there are also other associated injuries. Diagnosis is generally confirmed by plain X-rays. Hip dislocations can also occur following a hip replacement or from a developmental abnormality known as hip dysplasia.
  Efforts to prevent the condition include wearing a seat-belt. Emergency treatment generally follows advanced trauma life support. This is generally followed by reduction of the hip carried out under procedural sedation. A CT scan is recommended following reduction to rule out complications. Surgery is required if the joint cannot be reduced otherwise. Often a few months are required for healing to occur.
  Hip dislocations are uncommon. Males are affected more often than females.
context_section_description: Hip dysplasia is a condition in which a child is born with a hip problem. Hip dysplasia is when the formation of the hip joint is abnormal. The ball at the top of the thighbone which is known as the femoral head is not stable within the socket (which is also known as the acetabulum).
  Hip dysplasia is the preferred term because it provides a more accurate description of the spectrum of abnormalities that affect the immature hip. The term "congenital" dislocation is no longer recommended, except for very rare conditions, in which there is a ("teratologic") fixed dislocation location present at birth.
caption: Dislocation of the left hip, secondary to developmental hip dysplasia. Closed arrow marks the acetabulum, open arrow the femoral head.
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