The Abductor Strength And Function After The Anterolateral Minimally Invasive Approach Anatomically Reconstructed The Gluteal Medius Insertions For Total Hip Arthroplasty

Objective To investigate the abductor strength and function after theanterolateral minimally invasive approach anatomically reconstructed thegluteal medius insertions for total hip arthroplasty. And to investigatewhether the clinical outcomes are more favorable in femoral neck fracturepatients than non-femoral neck fracture patients.Methods Retrospectively analyze58patients of receiving primaryunilateral THA from May2009to June2011at Department of Orthopedics,the first affiliated Hospital of Chongqing Medical University. Allparticipants underwent a clinical examination preoperatively and6,12,24and48weeks postoperatively. The clinical investigations contained theHarris hip score, Oxford hip score(OHS), WOMAC score, VAS pain score,Trendelenburg’s sign, gait velocity and the abductor torque. Statisticalevaluation was performed with SPSS software version18.0(SPSS Inc,Chicago, IL). The significance level was set at P <0.05. Results A significant difference could be observed in Harris, OHS andWOMAC scores from6to24weeks postoperative. The pain score hasreduced significantly after the operation. There is a significant increasingafter operation for gait velocity. The scores, Trendelenburg’s sign, gaitvelocity and abductor torque do not differ significantly between femoralneck fracture group and non-femoral neck fracture group by1yearpostoperative.Conclusions This study has demonstrated that patients can obtain goodabductor strength and function in the early period postoperative after usinganterolateral minimally invasive approach for primary THA. But, there arenot significant difference between femoral neck fracture group andnon-femoral neck fracture group in all clinical investigations from6weeksto48weeks postoperatively.