Necrosis of the femoral head in the atraumatic form affects a young population, so the efforts of the researchers are aimed at clarifying the aetiology and pathophysiology of this disease, to establish the basis of prevention and non-surgical treatment; thus attempting to avoid reaching the phases of femoral head collapse and arthroscopic degeneration of the hip joint, which necessitate placing a total replacement arthroplasty at an early age. Alcoholism, coagulopathies, sickle cell disease and HIV infection are the aetiologies described in more detail, although all of them reach a common pathway of ischemia and bone necrosis, a process of repair in favor of bone resorption with loss of Structural integrity and subchondral collapse. All this favored by a genetic predisposition. As for treatment, there is a tendency to preserve the replacement arthroplasty for subchondral collapse and to attempt more conservative alternatives in pre-collapse stages, although the best results are obtained with arthroplasty.

Necrosis of the femoral head in the atraumatic form affects a young population, so the efforts of the researchers are aimed at clarifying the aetiology and pathophysiology of this disease, to establish the basis of prevention and non-surgical treatment; thus attempting to avoid reaching the phases of femoral head collapse and arthroscopic degeneration of the hip joint, which necessitate placing a total replacement arthroplasty at an early age. Alcoholism, coagulopathies, sickle cell disease and HIV infection are the aetiologies described in more detail, although all of them reach a common pathway of ischemia and bone necrosis, a process of repair in favor of bone resorption with loss of Structural integrity and subchondral collapse. All this favored by a genetic predisposition. As for treatment, there is a tendency to preserve the replacement arthroplasty for subchondral collapse and to attempt more conservative alternatives in pre-collapse stages, although the best results are obtained with arthroplasty.