title: Rotational laxity after anatomical ACL reconstruction measured by 3-D motion analysis: a prospective randomized clinical trial comparing anatomic and nonanatomic ACL reconstruction techniques.
abstract: OBJECTIVE
  To compare the ability of three different anterior cruciate ligament (ACL) reconstruction techniques to normalize rotational knee stability 1 year after ACL reconstruction. Two of these techniques are so-called anatomic techniques.
  
  
  METHODS
  Three different ACL reconstruction techniques were tested for their ability to normalize rotational knee stability in a prospective randomized study. Forty-seven ACL-deficient (ACLD) patients were randomized to transtibial single-bundle (SB), anatomic SB, and double-bundle ACL reconstruction. Three-dimensional motion analysis was performed preoperatively and at 1-year follow-up to evaluate tibial rotation and rotational stiffness. Motion data were captured using an eight-camera motion analysis system. Tibial rotation was determined during walking, running, and a pivoting task. Other outcome parameters were KT-1000 knee laxity measurements and the subjective outcome scores KOOS and IKDC.
  
  
  RESULTS
  Three-dimensional motion analysis demonstrated that the tibial internal rotation and the rotational stiffness did not differ between the ACL reconstruction techniques during walking, running, and pivoting at 1-year follow-up. Objective knee stability and subjective outcome scores did not differ between the reconstruction groups.
  
  
  CONCLUSIONS
  No significant difference in rotational stability walking, running, and pivoting was seen between anatomic and nonanatomic ACL reconstruction techniques at 1-year follow-up.
  
  
  METHODS
  Therapeutic study, Level I.
authors.affiliation: Division of Sportstrauma, Department of Orthopedics, Aarhus University Hospital, Tage Hansens Gade 2, 8000, Aarhus C, Denmark.
authors.forename: Marie Bagger
authors.initials: MB
authors.lastname: Bohn
authors.affiliation: Department of Public Health, Section of Sports Science, Aarhus University, Aarhus, Denmark.
authors.forename: Henrik
authors.initials: H
authors.lastname: Sørensen
authors.affiliation: Department of Physiotherapy and Occupational Therapy, Aarhus University Hospital and Centre of Research in Rehabilitation, Institute of Clinical Medicine and Department of Public Health, Aarhus University, Aarhus, Denmark.
authors.forename: Mette Krintel
authors.initials: MK
authors.lastname: Petersen
authors.affiliation: Department of Orthopedics, Aarhus University Hospital, Aarhus, Denmark.
authors.forename: Kjeld
authors.initials: K
authors.lastname: Søballe
authors.affiliation: Division of Sportstrauma, Department of Orthopedics, Aarhus University Hospital, Tage Hansens Gade 2, 8000, Aarhus C, Denmark. martinlind@dadlnet.dk.
authors.forename: Martin
authors.initials: M
authors.lastname: Lind
mesh_terms: D000293:Adolescent; D000328:Adult; D059549:Anterior Cruciate Ligament Reconstruction / Q000379:methods*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D007593:Joint Instability / Q000503:physiopathology* / Q000601:surgery; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012399:Rotation; D013977:Tibia / Q000503:physiopathology; D013996:Time and Motion Studies; D055815:Young Adult
keywords: ACL reconstruction; Double-bundle reconstruction; Motion analysis; Rotational stability