Abstract: Objective estigate the clinical effect of total hip arthroplasty(THA) through medius gluteus space approach(MGA).Methods The clinical data of 72 hospitalized THA patients in the Department of joint surgery of our hospital from February 2016 to February 2018 were analyzed retrospectively,including 30 cases of THA(medius gluteal space approach,MGA group),42 cases of THA(posterolateral approach,PLA group).Perioperative data of the two groups were compared.Results The incision length of MGA group was significantly shorter than that of PLA group,and the first walking time of MGA group was significantly earlier than that of PLA group，the operation time was longer than that of PLA group(P<0.05).There were 1 cases of deep venous thrombosis(DVT) in MGA group,5 cases with intermuscular venous thrombosis;and 4 cases DVT in PLA group,and 7 cases with intermuscular venous thrombosis.Postprosthetic dislocation occurred in 2 patients in PLA group,and abductor muscle strength in 3 patients in MGA group was weaker than that on the opposite side,and recovered at 3month follow-up.The postoperative Harris score and SF-36 score of the two groups were significantly higher than those before operation(P<0.001).1 month after operation,the Harris score and SF-36 score in MGA group were significantly better than those in PLA group(P<0.05).There was no significant difference in anteversion angle and abduction angle between the two groups(P>0.05).The limb length in MGA group was (5.17±2.37)mm,which was significantly higher than PLA group[(4.26±1.91)mm](P<0.05).Conclusion Total hip arthroplasty through the medial gluteus medius approach could achieve satisfactory clinical results,with less trauma.

Key words: total hip arthroplasty, medical gluteal medius approach, posterolateral approach, quality of life