Article

Patella stabilizer muscle response and patellar kinematics were evaluated in 19
women with anterior knee pain (AKP) and 20 healthy women during maximum voluntary
isometric contraction (MVIC) with the knee positioned at 15 degrees , 30 degrees
and 45 degrees flexion during open (OKC) and closed (CKC) kinetic chain
exercises. Patellar kinematics was evaluated through patellar tilt and
displacement, and the electrical activity of patellar stabilizers through the
root mean square normalized during MVIC and OKC with the knee at 90 degrees
flexion. Data revealed that the vastus medialis oblique muscle (VMO) was more
active in the control group compared to the AKP group during OKC exercises with
the knee at 45 degrees flexion. However, no difference in the patellar kinematics
was observed between these groups; nevertheless, the correlation between these
parameters also showed, with the knee at 45 degrees flexion, that lateral
patellar tilt increase was associated with a reduction in the activity of lateral
patellar stabilizers in the control group and with an increase in the VMO
activity in the AKP group. In conclusion, electrical activity is an important
factor in evaluating AKP and in AKP treatment evolution.
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Langue : ANGLAIS