title: Anatomic single-bundle anterior cruciate ligament reconstruction in Asian population.
abstract: BACKGROUND
  Non-anatomic tunnel placement, which leads to failure in double-bundle anterior cruciate ligament (ACL), has focused greater attention on single-bundle ACL reconstruction. However, single-bundle ACL with 2- to 4-strand autogenous hamstring tendon graft always showed weak graft strength.
  
  
  METHODS
  To solve this problem, single-bundle ACL with 6-strand autogenous hamstring tendon graft was performed on 32 Asian patients in this study. At 24 months post-operatively, all patients were evaluated with Lysholm knee scores, Tegner activity level and KT-1000 examinations.
  
  
  RESULTS
  The results demonstrated that no patients showed knee extension limitation. Of the 32 patients, there were 26 negative and 6 positive 1° in Lachman test; 31 negative and 1 positive 1° in pivot-shift test. There were four patients with a 5° flexion limitation. The median Lysholm score increased from 45 preoperatively to 92 post-operatively (P < 0.001). The median Tegner sport level score increased from 1 preoperatively to 4 post-operatively (P < 0.001). KT-1000 examination revealed that the median anterior laxity at 25° of flexion was 6.3 mm preoperatively and 1.7 mm post-operatively (P < 0.001).
  
  
  CONCLUSIONS
  The data showed that arthroscopic central anatomic single-bundle ACL reconstruction with 6-strand autogenous hamstring tendon graft is a reliable method to restore stabilization and function of the knee.
authors.affiliation: Orthopedic Department, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, China. sunluning2000@sina.com
authors.forename: Luning
authors.initials: L
authors.lastname: Sun
authors.forename: Jinzhong
authors.initials: J
authors.lastname: Zhao
authors.forename: Jirong
authors.initials: J
authors.lastname: Shen
authors.forename: Bin
authors.initials: B
authors.lastname: Du
authors.forename: Bin
authors.initials: B
authors.lastname: Yuan
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D059549:Anterior Cruciate Ligament Reconstruction / Q000379:methods*; D001182:Arthroscopy; D001265:Athletic Injuries / Q000601:surgery; D001642:Bicycling / Q000293:injuries; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000209:etiology / Q000601:surgery*; D008297:Male; D016896:Treatment Outcome