title: Functional assessment of knee joint position sense following anterior cruciate ligament reconstruction.
abstract: BACKGROUND
  The anterior cruciate ligament (ACL) has both mechanical and proprioceptive (sensory) functions. Knee-joint proprioception has been assessed using either reproduction of position or threshold to detect passive motion in non-weight-bearing positions. It has been suggested that a more functional and dynamic/active assessment of proprioception might clarify the effects of injury and reconstruction on the proprioceptive function of ACL at the knee joint.
  
  
  OBJECTIVE
  To assess knee joint position sense (JPS) following ACL reconstruction in functional positions.
  
  
  METHODS
  Twelve male patients who had undergone ACL reconstruction and 12 male healthy control subjects participated in the study.
  
  
  METHODS
  JPS was evaluated by reproduction of the angles in weight-bearing position with limb movement into flexion and extension. The dominant knee of healthy subjects and both (reconstructed and uninjured) knees of the patients were tested. Absolute angular error was used as a dependent variable.
  
  
  RESULTS
  There was no significant difference between the operated and uninjured knees of patients or between patients and healthy controls (p>or=0.05). These results were measured during two tasks of limb movement into flexion and extension.
  
  
  CONCLUSIONS
  We found no evidence of impaired JPS in weight-bearing positions in subjects with ACL reconstruction at a mean follow-up of 11 months after surgery compared with subjects with healthy knees.
authors.affiliation: Rehabilitation Faculty, Tehran University of Medical Sciences and Health Services (TUMS), Pich-Shemiran, Tehran, Iran.
authors.forename: S M
authors.initials: SM
authors.lastname: Mir
authors.forename: M-R
authors.initials: MR
authors.lastname: Hadian
authors.forename: S
authors.initials: S
authors.lastname: Talebian
authors.forename: N
authors.initials: N
authors.lastname: Nasseri
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000503:physiopathology / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D001265:Athletic Injuries / Q000503:physiopathology / Q000534:rehabilitation* / Q000601:surgery; D016022:Case-Control Studies; D005500:Follow-Up Studies; D006801:Humans; D007718:Knee Injuries / Q000503:physiopathology / Q000534:rehabilitation* / Q000601:surgery; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D011184:Postoperative Period; D011434:Proprioception / Q000502:physiology*; D016059:Range of Motion, Articular / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology; D016896:Treatment Outcome; D016474:Weight-Bearing / Q000502:physiology