title: Single-leg assessment of postural stability and knee functional outcome two years after anterior cruciate ligament reconstruction.
abstract: OBJECTIVE
  To analyse postural stability and the single-leg hop for distance in subjects 2 years after anterior cruciate ligament reconstruction (ACLR), in comparison with an age- and activity-matched control group.
  
  
  METHODS
  Subjects reported to a sports medicine or athletic training research laboratory for testing.
  
  
  METHODS
  Twenty-six subjects having undergone ACLR and 26 age- and activity-matched controls were selected to participate in this study. An arthroscopically-assisted, central, one-third bone-patellar tendon procedure was used to repair the ACLs.
  
  
  METHODS
  One-leg stance postural stability was measured with the NeuroCom Balance Master platform system. We recorded the single-leg hop for distance as an objective measure of function.
  
  
  RESULTS
  We found a significant difference (p<0.05) between the ACLR and control subjects in terms of the one-leg stance sway velocity (knee fully extended) on the operated side.
  
  
  CONCLUSIONS
  After ACLR (mean time postoperatively: 24+/-1 months), single-leg hop for distance score was normal, when compared with the contralateral limb. Our results indicate that 2 years after surgery, single-limb postural stability in the ACLR group differed significantly from that in the control group. The persistence of poor stability control may be correlated to an impairment in proprioception.
authors.affiliation: Ksar-Said Higher Institute of Sports and Physical Education, résidence Essaada, rue 13-Août, Manouba, 2010, Tunisia. amira_zouita@yahoo.fr
authors.forename: A
authors.initials: A
authors.lastname: Zouita Ben Moussa
authors.forename: S
authors.initials: S
authors.lastname: Zouita
authors.forename: C
authors.initials: C
authors.lastname: Dziri
authors.forename: F Z
authors.initials: FZ
authors.lastname: Ben Salah
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D001182:Arthroscopy; D001265:Athletic Injuries / Q000601:surgery; D016022:Case-Control Studies; D005500:Follow-Up Studies; D006801:Humans; D007717:Knee / Q000503:physiopathology*; D007866:Leg / Q000503:physiopathology*; D008124:Locomotion; D008297:Male; D008465:Mechanoreceptors / Q000502:physiology; D017847:Patellar Ligament / Q000601:surgery; D011183:Postoperative Complications / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D004856:Postural Balance; D019651:Plastic Surgery Procedures; D020127:Recovery of Function; D012678:Sensation Disorders / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D016896:Treatment Outcome; D055815:Young Adult