title: Functional outcomes of bilateral hip necrosis: total hip arthroplasty versus extracorporeal shockwave.
abstract: BACKGROUND
  This study compared the functional outcomes of total hip (THA) in one and shockwave (ESWT) in the other in 17 patients with bilateral hip necrosis.
  
  
  METHODS
  In THA side, only one type of prosthesis was used and all components were press fixed. In ESWT side, each hip received 6,000 impulses of shockwave at 28 kv.
  
  
  RESULTS
  The evaluations included pain score and Harris hip score, radiographs and MR images. The magnitudes of improvement in pain and function favored the ESWT side. Thirteen patients rated ESWT better than THA; four patients reported comparable results between THA and ESWT, and none graded THA better than ESWT. Better functional outcomes were observed after ESWT for early hip necrosis than THA for late cases in patients with bilateral hip disease.
authors.affiliation: Department of Orthopedic Surgery, Chang Gung University College of Medicine, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Niao-Sung Hsiang, Kaohsiung, Taiwan.
authors.forename: June-Ming
authors.initials: JM
authors.lastname: Chen
authors.forename: Shan-Ling
authors.initials: SL
authors.lastname: Hsu
authors.forename: To
authors.initials: T
authors.lastname: Wong
authors.forename: Wen-Yi
authors.initials: WY
authors.lastname: Chou
authors.forename: Ching-Jen
authors.initials: CJ
authors.lastname: Wang
authors.forename: Feng-Sheng
authors.initials: FS
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005271:Femur Head Necrosis / Q000175:diagnosis / Q000601:surgery*; D005500:Follow-Up Studies; D019220:High-Energy Shock Waves / Q000627:therapeutic use*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011183:Postoperative Complications / Q000175:diagnosis; D016059:Range of Motion, Articular / Q000502:physiology; D055815:Young Adult