title: An intraoperative device to restore femoral offset in total hip arthroplasty.
abstract: BACKGROUND
  Leg length discrepancy (LLD) after total hip arthroplasty (THA) can lead to unsatisfactory outcome. Our objective was to design and evaluate a simple and reliable intraoperative device (Length-offset Lever) to minimize leg length discrepancy.
  
  
  METHODS
  This device was used in 51 patients undergoing primary total hip replacements. The leg length discrepancy was measured pre- and postoperatively based on plain radiographs.
  
  
  RESULTS
  Preoperative radiographic leg length discrepancy averaged 13.5 ± 6.2 mm. Leg length discrepancy showed significant improvement, with a postoperative average of 4.1 ± 2.3 mm (p < 0.0001). There were no complications associated with this device.
  
  
  CONCLUSIONS
  The 'Length-offset Lever' is a useful intraoperative tool to restore anatomic femoral offset and height of femoral head.
authors.forename: Enxing
authors.initials: E
authors.lastname: Xue
authors.forename: Zhen
authors.initials: Z
authors.lastname: Su
authors.forename: Chengwang
authors.initials: C
authors.lastname: Chen
authors.forename: Paul Kim Chiu
authors.initials: PK
authors.lastname: Wong
authors.forename: Hong
authors.initials: H
authors.lastname: Wen
authors.affiliation: Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou 325000, Zhejiang, China. drzhangyu@hotmail.com.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D001696:Biomechanical Phenomena; D004867:Equipment Design; D005260:Female; D005270:Femur Head / Q000033:anatomy & histology*; D006621:Hip Joint / Q000503:physiopathology; D006801:Humans; D007432:Intraoperative Period; D007870:Leg Length Inequality / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D055815:Young Adult