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Pathophysiology: Legg-Calve-Perthes disease is a childhood condition that affects the hip, where the thighbone (femur) and pelvis meet in a ball-and-socket joint. It occurs when blood supply is temporarily interrupted to the ball part (femoral head) of the hip joint. Without sufficient blood flow, the bone begins to die — so it breaks more easily and heals poorly. Signs & Symptoms: Common symptoms include hip, knee, or groin pain, exacerbated by hip/leg movement, especially internal hip rotation.
Treatment: X-Rays of the hip may suggest and/or verify the diagnosis. X-rays usually demonstrate a flattened, and later fragmented, femoral head. A bone scan or MRI may be useful in making the diagnosis in those cases where x-rays are inconclusive. Usually, plain radiographic changes are delayed 6 weeks or more from clinical onset. So bone scintography and MRI are done for early diagnosis. Treatment is done by removing mechanical pressure from the joint until the disease has run its course.
Statistics:The condition affects one of every 740 boys and one of every 3,700 girls in North America. The male-to-female ratio is 3-5:1. LCP disease is an avascular necrosis of the femoral head in small breed dogs, usually those weighing less than 12 kg. The risk of Legg-Calvé-Perthes disease increased with an increasing number of coagulation abnormalities in males but not in females.