title: [Comparison of clinical efficacy between minimally invasive total hip artliroplasty and traditional total hip arthroplasty: a systematic review].
abstract: OBJECTIVE
  To systematically review the effectiveness of minimally invasive total hip arthroplasty (MIS-THA) versus traditional total hip arthroplasty (THA) in patients with hip diseases.
  
  
  METHODS
  Through a method of combining Free words and keywords,we searched databases including PubMed,The Cochrane Library, EMbase,Web of Science, CBM , CNKI and Wanfang Data for randomized controlled trials (RCTs) on the comparison between MIS-THA and THA for hip disease from inception to June, 2014. Two reviewers independently screened literatures according to the inclusion and exclusion criteria, extracted data and assessed the quality of the included studies according to the "bias risk assessment" tool recommended by Cochrane Handbook 5.0 for Systematic Reviews. Then, meta-analysis was performed using RevMan 5.3 software.
  
  
  RESULTS
  Thirteen RCTs involving 1 213 cases of surgeries and total 1 284 hips (MIS-THA: n = 631; THA: n = 653) were identified. The results of meta-analysis showed that statistically significant differences were found in Harris hip score on the 3rd month after operation [MD = 8.37, 95% CI (6.02,10.72)], Hematocrit [MD = 0.02, 95% CI (0.01, 0.03)] and Hemoglobin [MD = 0.50, 95% CI (0.16, 0.85)] at the 48th hour after operation, changed value of femoral offset [MD = 0.30, 95% CI (0.04, 0.56)] between two groups. In the change value of femoral offset, THA was better than MIS-THA; There were no statistically significant differences between two groups in Harris hip score at 1st year after operation [MD = 3.26, 95% CI (-3.25, 9.76)], WOMAC score [MD = -0.53, 95% CI (-3.67, 2.60)] and Oxford score [MD = 1.34, 95% CI (-3.46, 6.13)] at the 6th week after operation, Hematocrit at the 8th hour after operation [MD = -0.01, 95% CI (-0.02, 0.00)], the incidence of hip varus [RR = 0.82, 95% CI (0.45,1.52)] and dislocation [RR = 1.40, 95% CI (0.48, 4.12)].
  
  
  CONCLUSIONS
  THA brings less trauma, less hemorrhage and better early clinical outcome compared with MIS-THA, but the difference of the complication rates between the two groups is similar.
authors.forename: Rong
authors.initials: R
authors.lastname: Wang
authors.forename: Xiu-xia
authors.initials: XX
authors.lastname: Li
authors.forename: Ming-xuan
authors.initials: MX
authors.lastname: Gao
authors.forename: Ze-hao
authors.initials: ZH
authors.lastname: Wang
authors.forename: Li-ming
authors.initials: LM
authors.lastname: Yu
authors.forename: Xu-sheng
authors.initials: XS
authors.lastname: Li
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D006801:Humans; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*