title: Coordination and stability of one-legged hopping patterns in patients with anterior cruciate ligament reconstruction: preliminary results.
abstract: OBJECTIVE
  To investigate whether the intralimb coordination of the lower extremity during one-legged hopping in patients with anterior cruciate ligament reconstruction is different and less stable compared to control subjects.
  
  
  METHODS
  Measures of coordination dynamics are applied to study the coordination and stability of movement patterns of the knee and ankle in patients and control subjects.
  
  
  BACKGROUND
  Due to several factors, such as loss of proprioceptive function and muscle weakness, the intralimb coordination of the lower extremity might be altered.
  
  
  METHODS
  Seven patients and 13 healthy control subjects were instructed to hop in place on one leg for 10 seconds at a comfortable frequency for each leg separately.
  
  
  CONCLUSIONS
  The one-legged hopping movement pattern of patients with anterior cruciate ligament reconstruction one-year post-operative is different and less stable compared to healthy subjects, and thus is still impaired.
  
  
  CONCLUSIONS
  This paper shows that patients, one year after reconstruction of the anterior cruciate ligament, have a different coordination pattern of the lower limb compared to a matched control group. Intersegmental coordination and stability, features that are often observed by eye during a rehabilitation process, are objectified in this study.
authors.affiliation: Department of Physical Therapy, University Medical Center Nijmegen, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands. c.vanuden@fysioth.umcn.nl
authors.forename: C J T
authors.initials: CJ
authors.lastname: van Uden
authors.forename: J K C
authors.initials: JK
authors.lastname: Bloo
authors.forename: J G M
authors.initials: JG
authors.lastname: Kooloos
authors.forename: A
authors.initials: A
authors.lastname: van Kampen
authors.forename: J
authors.initials: J
authors.lastname: de Witte
authors.forename: R C
authors.initials: RC
authors.lastname: Wagenaar
mesh_terms: D000293:Adolescent; D000328:Adult; D000842:Ankle / Q000503:physiopathology*; D016118:Anterior Cruciate Ligament / Q000503:physiopathology / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D005260:Female; D005684:Gait; D006801:Humans; D007593:Joint Instability / Q000503:physiopathology*; D007717:Knee / Q000503:physiopathology*; D008124:Locomotion; D008297:Male; D008875:Middle Aged; D009048:Motor Skills; D009068:Movement