title: [Causes of early failure after total hip arthroplasty].
abstract: OBJECTIVE
  To explore the causes of early failure after primary total hip arthroplasty (THA).
  
  
  METHODS
  The causes of early THA failures were retrospectively reviewed for 215 cases of revision THA between January 2007 and December 2013.
  
  
  RESULTS
  The causes of early failures of primary THA in decreasing frequencies were infection (50.7%, 109/215), aseptic loosening (31.6%, 68/215), dislocation (8.8%, 19/215), periprosthetic fracture (3.7%, 8/215), implant-related failure (2.3%, 5/215), heterotopic ossification (1.4%, 3/215) and liner wear (0.9%, 2/215).
  
  
  CONCLUSIONS
  The top three causes of early failure after primary THA are infection, aseptic loosening and dislocation.
authors.affiliation: Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China.
authors.forename: Ti
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Zheng
authors.affiliation: Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China.
authors.forename: Haiyang
authors.initials: H
authors.lastname: Ma
authors.affiliation: Department of Orthopedic, Beijing Tsinghua Changgung Hospital, Medical Center, Tsinghua University, Beijing 102218, China. Email: suncjdoctor@163.com.
authors.forename: Changjiao
authors.initials: C
authors.lastname: Sun
mesh_terms: D019644:Arthroplasty, Replacement, Hip; D006622:Hip Prosthesis; D006801:Humans; D004204:Joint Dislocations; D057068:Periprosthetic Fractures; D011475:Prosthesis Failure; D012189:Retrospective Studies