title: Restoration of sagittal and transverse plane proprioception following anatomic double-bundle ACL reconstruction.
abstract: OBJECTIVE
  To investigate the restoration of knee proprioception after anatomic double-bundle ACL reconstruction.
  
  
  METHODS
  Eleven subjects who underwent anatomic double-bundle ACL reconstruction (12.5-15 months following surgery) and eleven healthy control subjects participated in the study. Sagittal and transverse plane threshold to detect passive motion (TTDPM) were assessed utilizing a customized isokinetic dynamometer by passively rotating the tibia about a fixed femur in both the sagittal plane and transverse plane at 0.25°/s until the subject signalled recognition of movement and movement direction. Based on the normality assumption, either dependent t test or Wilcoxon test was utilized to determine whether significant differences were present between the ACL-reconstructed and the uninjured contralateral limbs. Independent t test or Mann-Whitney test was utilized to compare between the ACL-reconstructed/uninjured contralateral and the external control limbs.
  
  
  RESULTS
  There were no significant differences in TTDPM measurement in eleven out of twelve comparisons between the ACL-reconstructed and the uninjured contralateral/external control limbs. The only statistical significant difference was found on TTDPM towards internal rotation direction from the externally rotated-test position between the ACL-reconstructed and the uninjured contralateral limbs (p = 0.01).
  
  
  CONCLUSIONS
  Based on a small sample of eleven subjects, the current results indicate a restoration of both sagittal and transverse plane TTDPM following the anatomic double-bundle ACL reconstruction.
  
  
  METHODS
  III.
authors.affiliation: Neuromuscular Research Laboratory, University of Pittsburgh, 3830 South Water St., Pittsburgh, PA 15203, USA. tnagai@pitt.edu
authors.forename: Takashi
authors.initials: T
authors.lastname: Nagai
authors.forename: Nicholas R
authors.initials: NR
authors.lastname: Heebner
authors.forename: Timothy C
authors.initials: TC
authors.lastname: Sell
authors.forename: Takumi
authors.initials: T
authors.lastname: Nakagawa
authors.forename: Freddie H
authors.initials: FH
authors.lastname: Fu
authors.forename: Scott M
authors.initials: SM
authors.lastname: Lephart
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000503:physiopathology; D000070598:Anterior Cruciate Ligament Injuries; D059549:Anterior Cruciate Ligament Reconstruction / Q000379:methods; D001696:Biomechanical Phenomena; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000503:physiopathology / Q000601:surgery*; D007719:Knee Joint / Q000502:physiology*; D008297:Male; D011184:Postoperative Period; D011434:Proprioception / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology*; D055815:Young Adult