title: Biomechanical deficits in patients at 3 months following total knee arthroplasty.
abstract: OBJECTIVE
  This study aimed to evaluate functional biomechanics in patients who undergo total knee arthroplasty (TKA).
  
  
  METHODS
  Lower limb joint kinematics and kinetics were evaluated in 25 TKA patients at 3 months following TKA and 25 age-matched controls after 12 months following TKA. Participants were evaluated in a gait laboratory, with self-selected gait speed.
  
  
  RESULTS
  Experimental group walked significantly slower (p < 0.01), using a shorter stride length (p < 0.01), compared to those for the controls. The experimental group exhibited significantly greater knee motion, lower knee extension moment (p < 0.01), and lower peak power generation (p < 0.01) compared to those for the control group. Additionally, the TKA group showed significantly smaller peak ankle motion (p < 0.01), lower ankle dorsiflexion moments (p < 0.05), and ankle power generation (p < 0.01) compared to those for the control group.
  
  
  CONCLUSIONS
  These biomechanical properties of gait in the experimental group may be a compensatory response to lesser recovered knee function to allow sufficient power generation for propulsion. Therefore, rehabilitative strategies at 3 months following TKA are needed to improve not only knee function but also hip and ankle function after TKA.
authors.forename: In-Hee
authors.initials: IH
authors.lastname: Lee
mesh_terms: D000368:Aged; D000843:Ankle Joint / Q000503:physiopathology*; D019645:Arthroplasty, Replacement, Knee; D001696:Biomechanical Phenomena / Q000502:physiology; D016022:Case-Control Studies; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D020370:Osteoarthritis, Knee / Q000503:physiopathology / Q000601:surgery; D016059:Range of Motion, Articular / Q000502:physiology*
keywords: Total knee arthroplasty; biomechanics; gait