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Prevention and treatment strategies for avascular necrosis of the femoral head in children have not yet been established. We have reported that near-infraredray irradiation promotes repair of necrosis in Perthes disease, thereby preventing deformity of the femoral head(1) In this paper, we report on the effectiveness of low-level laser irradiation, which has been in use since 1993, in reducing the tension of the muscles acting on the hip joint, especially the adductor muscle group, as a novel technique for alleviating the restriction of hip abduction due to congenital dislocation of the hip. Also, we report a comparative review of cases treated by low-level laser irradiation against those not treated by irradiation before and after reduction of congenital dislocation of the hip with a Pavlik harness or traction of the lower extremities, to explore the possibility of preventing avascular necrosis of the femoral head, which inevitably occurs in about 10% of cases treated by conventional reduction treatment.

APPLICATION OF LOW-LEVEL LASER THERAPY (LLLT) FOR REDUCTION OF CONGENITAL DISLOCATION OF THE HIP