The present study investigated whether the presence of fluid in the joint affected peak torque and the root mean square (RMS) values of surface electromyography (EMG) in patients symptomatic for osteoarthritis (OA).
Several studies have shown that knee effusion influenced quadriceps muscle activity and induced quadriceps arthrogenic muscle inhibition in normal volunteers. However, the effect of joint effusion on the quadriceps of patients with OA is controversial,and few patients with OA have been included in studies of joint effusion.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
40
20 cc normal saline injection into knee joint
no saline injection
Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea
Seoul, Seoul, South Korea
the peak torque of the knee extensors
to evaluate the effect of effusion on the peak torque of the knee extensors
Time frame: within 5 minutes after intervention
the root mean square values of the vastus medialis and vastus lateralis muscles
to evaluate the effect of effusion on the RMS of the vastus medialis (VM) and vastus lateralis (VL) muscles
Time frame: within 5 minutes after intervention
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