Article

OBJECTIVES: To profile knee flexor strength and endurance responses to
ipsilateral hamstring tendon autograft anterior cruciate ligament reconstruction
in patients, and to describe knee flexor strength and endurance as predictors of
subjective outcomes.
The hypothesis was that the involved leg would demonstrate
deficits compared with uninvolved and matched legs.
DESIGN: Retrospective cohort.
SETTING: Controlled laboratory. PARTICIPANTS: Women (n=15; mean age,
20.47+/-1.96y; height, 1.69+/-.08m; weight, 68.51+/-12.64kg), who were a mean +/-
SD of 25.93+/-11.25 months postsurgery, were matched to 15 sex-matched controls
(mean age, 20.93+/-1.22y; height, 1.65+/-.06m; weight, 66.52+/-10.69kg).
INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Concentric peak flexor
moment over the entire isokinetic joint range of motion, peak flexor moment at
105 degrees of joint flexion, and knee flexor total work, normalized to body
mass, and subjective questionnaire scores for the involved leg. RESULTS:
Significantly lesser peak flexor moment over the entire isokinetic joint range of
motion (P=.034) and total work (P=.048) existed for the involved leg
(.959+/-.186Nm/kg; 21.933+/-5.881J/kg) compared with the matched leg
(1.108+/-.134Nm/kg; 27.431+/-6.499J/kg). Significantly lesser peak flexor moment
at 105 degrees of joint flexion (P=.002) existed between the involved
(.221+/-.116Nm/kg) and uninvolved (.40+/-.234Nm/kg) and matched
(.475+/-.183Nm/kg) legs. Significantly greater strength deficits (P</=.001)
existed at peak flexor moment at 105 degrees of joint flexion compared with peak
flexor moment over the entire isokinetic joint range of motion for side
(53.83%+/-38.8%; 9.87%+/-10.77%) and group (77.61%+/-44.14%; 18.09%+/-11.73%)
differences. Peak flexor moment at 105 degrees of joint flexion was a significant
predictor of subjective pain (P=.007), symptoms (P=.006), function (P=.011), and
sports (P=.022) outcomes. CONCLUSIONS: Knee flexor strength and endurance
deficits suggest susceptibility to reinjury, and strength in a deep joint angle
predicts subjective outcomes.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS