Osteonecrosis of the femoral head remains a relatively common pathology. Bone ischemia by vascularization disorder is the most recognized mechanism. All the therapies that aimed to restore an optimal revascularization have so far failed to produce satisfactory results. The subchondral dissection is the most serious complication, synonymous for all the authors of an inevitable evolution to a depression of the sequestrum resulting in osteoarthritis with articular destruction.
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