Abstract: To find out the causes and precautions of complication prothesis replacement of the femoral head 78 cases(80 hip)of prothesis replacement of the femoral head in the last 10 years was analyzed.The follow up time was 1.5 to 10 years, with an average of five years and eight months. The results were as follows: best 2 cases, better 2 cases, good 5 cases, fair 1 case, poor 2 cases, very poor 3 cases. Fifteen cases underwent complication(19.2%). Sufficient pre operation preparation, and regular and careful operation is the key to the successful operation and complication reduction.

Key words: artificial femoralhead, replacement, complication