Idiopathic osteonecrosis of femoral epiphysis in children. Incidence 5-15:100,000 in Western populations. Boys 5x more likely than girls. Peak presentation at 5-6 years
Childhood hip disorder caused by disrupted blood flow to femoral head. Bone dies and stops growing due to lack of blood supply. Disease affects 5.5 of 100,000 children per year. Boys affected 4:1 ratio, most common between ages 4-10
GTPS is inflammation of the trochanteric bursa at the top of the femur. Can result from injury or occur without identifiable cause. Common in middle-aged women, often associated with gluteal tendon disease. May coexist with low back pain, arthritis, and obesity
Medical condition affecting pubic joint in athletes. Most common in football and ice hockey players. Exact incidence unknown, debated as common or rare
BME occurs when normal bone marrow is replaced with fluid and blood. Most common in legs, especially knee joint. Can result from injuries, physical changes, or infections. May develop from avascular necrosis or cancer
The sciatic nerve is the largest nerve in the human body. It originates from the anterior rami of L4-L5 and S1-S3 spinal nerves. The nerve passes through the greater sciatic foramen in the pelvis. It descends through the posterior thigh between biceps femoris and adductor magnus