Core depression refers to a surgical operation in which the surgeon removes a section of the inner layer of a bone, according to the Mayo Clinic. The operation may relieve pressure, preserve structure and function, and reduce pain.
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AVN of the Hip
A surgeon may perform a core depression to relieve pain in avascular necrosis or AVN of the hip, according to Aetna's website. In AVN, cells in the bone start to die, causing pain and sometimes fracture of the femur (thigh) bone, specifically the head of the femur. Core depression can help preserve the bone before it fractures.
According to Aetna's website, the surgeon removes a core of bone from the femur to create an open channel, relieving pressure in the bone. A bone graft for the affected area follows. Depending on the type of graft, the procedure can either promote blood vessel growth and stop cell death or help stabilise the structure of the bone.
Effectiveness of Procedure
Core depression can effectively treat AVN of the hip in its earlier stages and reduce the need to completely replace one or both hip joints. AVN develops in 10,000 to 20,000 adult Americans every year, according to Aetna.
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