title: The effect of initial graft tension on postoperative clinical outcome in anterior cruciate ligament reconstruction with semitendinosus tendon.
abstract: BACKGROUND
  The goal of this study is to establish the influence of tensioning the graft during anterior cruciate ligament (ACL) reconstruction, with a semitendinosus tendon graft, on postoperative stability.
  
  
  METHODS
  Prospective controlled clinical trial.
  
  
  METHODS
  Forty-eight patients were randomly allocated to three groups in which three different tensions, 8, 12, or 15 kg force, was applied on the reconstructed ACL during the operation. The patients were observed for 1 year or more after surgery (min. 1 year, max. 2 years 8 months). Clinical outcome was evaluated using the visual analogue scale, anterior knee laxity (using the KT2000 arthrometer) and the torque of the knee extensor.
  
  
  RESULTS
  Postoperatively, the average side-to-side differences in anterior laxity were 1.3 mm in the 8 kg group, 2.1 mm in the 12 kg, and 2.4 mm in the 15 kg group. The visual analogue scale averaged 84, 83, and 79 mm, respectively. There were no significant differences among the three groups. There were also no significant differences between the groups for muscle strength recovery during isokinetic and isometric contraction at 1 year postoperatively.
  
  
  CONCLUSIONS
  There were no significant differences among the groups in subjective clinical results, anterior laxity, and knee extensor strength in the ACL reconstructions that used the autogenous semitendinosus tendon graft.
authors.affiliation: Department of Orthopaedics, Juntendo University, 2-1-1 Hongo, Tokyo, Japan. s-kim@med.juntendo.ac.jp
authors.forename: Sung-Gon
authors.initials: SG
authors.lastname: Kim
authors.forename: Hisashi
authors.initials: H
authors.lastname: Kurosawa
authors.forename: Keishoku
authors.initials: K
authors.lastname: Sakuraba
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ikeda
authors.forename: Shunji
authors.initials: S
authors.lastname: Takazawa
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods; D011446:Prospective Studies; D013710:Tendons / Q000637:transplantation; D016896:Treatment Outcome