title: Comparison of knee extensor strength between limbs in individuals with bilateral total knee replacement.
abstract: OBJECTIVE
  To determine and compare force production of the knee extensors between limbs after bilateral total knee arthroplasty (TKA).
  
  
  METHODS
  Two repeated-measures designs (2 factors: limb, time) assessing for differences in strength between limbs over 3 times at 2 different testing speeds.
  
  
  METHODS
  Private and institutional practice.
  
  
  METHODS
  Fourteen volunteers (6 men, 8 women; mean age +/- standard deviation, 74.57 +/- 5.5 y; height, 169.91 +/- 9.43 cm; weight, 76.42 +/- 9.85 kg) with bilateral TKA. Open-chain knee extensor strength was measured in both legs before surgery and 30 and 60 days after TKA at 60 degrees /s and 180 degrees /s.
  
  
  METHODS
  Rehabilitation 3 times weekly for 8 weeks. Treatment consisted of gait, transfer training, stationary cycle work, and a progressive resistance-training program.
  
  
  METHODS
  Peak torque measured isokinetically.
  
  
  RESULTS
  Limb by time interaction was not significant for either 60 degrees /s (F(2,26) =.75, P =.351) or 180 degrees /s (F(2,26) =.78, P =.393). A significant main effect of time was found at 60 degrees /s (F(2,26) = 14.22, P =.0001) and 180 degrees /s (F(2,26) = 10.47, P =.003).
  
  
  CONCLUSIONS
  During the first month after TKA, bilateral knee extensor force-production decreased significantly compared with preoperative force production.
authors.affiliation: Department of Exercise Science and Health, Florida Atlantic University, 2912 College Ave., Davie, FL 33314, USA. mark.rossi@eudoramail.com
authors.forename: Mark D
authors.initials: MD
authors.lastname: Rossi
authors.forename: Lee E
authors.initials: LE
authors.lastname: Brown
authors.forename: Michael
authors.initials: M
authors.lastname: Whitehurst
authors.forename: Crystal
authors.initials: C
authors.lastname: Charni
authors.forename: Jodi
authors.initials: J
authors.lastname: Hankins
authors.forename: Carol Lynne
authors.initials: CL
authors.lastname: Taylor
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000534:rehabilitation*; D005260:Female; D005684:Gait / Q000502:physiology; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D016474:Weight-Bearing / Q000502:physiology