Objectives : Osteonecrosis is a disease where there is the cellular death of bone components due to interruption of the blood supply. In these days, the clinical study and research about osteonecrosis are increased, however the study on osteonecrosis in oriental medical way is hardly studied yet. Thus, we report the significant effect of acupotomy and oriental medicine on osteonecrosis which occurred in femur and tibia. Methods : We observed recovery of symptoms and decrease of osteonecrosis region in femur and tibia by MRI. Results : During five times of acupotomy, pain on right side thigh in rest time and knee joint pain during walk were decresed after 1st, 2nd, and 3rd acupotomy. In MRI, we observed decrease of osteonecrosis region in femur and tibia, that made the patient could return to daily life. Conclusions : Acupotomy and Oriental medicine have an significant effect on osteonecrosis by pain relief and osteonecrosis region decrease.