Article

The aim of this study was to examine whether asymmetrical lower limb
loading early after anterior cruciate ligament reconstruction (1 mo) can predict
asymmetrical lower limb loading at the time of return to sport (6 mos) and
whether other early predictors as knee joint range of motion or maximal isometric
strength affect this relationship. DESIGN: Ground reaction forces were measured
during a sit-to-stand task 1 mo after anterior cruciate ligament reconstruction
and a vertical countermovement jump 6 mos after anterior cruciate ligament
reconstruction in 58 athletes. Other early postoperative measurements were knee
joint range of motion (2 wks, 1 mo, and 2 mos after surgery) and maximal
isometric strength of the knee extensor and flexor muscles (2 mos after surgery).
Linear regression models were developed using side-to-side limb symmetry index
(LSI) of countermovement jump as the dependent variable. RESULTS: LSI of
sit-to-stand task 1 mo after surgery was a significant independent predictor of
LSI of countermovement jump 6 mos after surgery. After accounting for deficits in
knee joint range of motion and LSI of maximal isometric strength (DeltaR = 0.35,
P < 0.01), LSI of sit-to-stand task predicted LSI of countermovement jump (DeltaR
= 0.14 P < 0.01). CONCLUSIONS: Asymmetrical lower extremity loading 1 mo after
anterior cruciate ligament reconstruction is an early predictor of asymmetrical
lower extremity loading 6 mos after surgery.

Langue : ANGLAIS