Biophysical stimulation with pulsed electromagnetic fields in osteonecrosis of the femoral head

摘要: Background: Osteonecrosis of the femoral head is end point a disease process that results in bone necrosis, joint edema, and cartilage damage. It leads to arthritis necessitates total hip arthroplasty many patients. Because its positive effects on osteogenesis chondroprotective effect articular cartilage, pulsed electromagnetic field stimulation has been proposed as method prevent or delay progression osteonecrosis. Methods: A retrospective analysis treatment with seventy-six hips sixty-six patients osteonecrosis was performed. Patients Ficat stage I, II, III were treated for eight hours per day an average five months. Clinical diagnostic imaging information collected at start time follow-up. The primary analyzed avoidance surgery, secondary limiting radiographic (according stage) head. Results: Fifteen required arthroplasty; twelve these stage-Ill disease. need significantly higher stage-III than stage-I (p < 0.0001) II 0.01) beginning treatment. Pulsed fields preserved 94% hips. Furthermore, occurred twenty (26%). Pain, present all treatment, disappeared after sixty days thirty-five (53%) moderate intensity seventeen Conclusions: this study confirm may be indicated early stages (Ficat I II). able either preserve until surgery. authors hypothesize short-term protect from catabolic inflammation subchondral bone-marrow edema. long-term promote osteogenic activity necrotic area trabecular fracture collapse.