1 4 . H O W T O U S E T H E W I R E L E S S P R O F E S S I O N A L O N S P E C I F I C
I N D I C AT I O N S
220
EN
WIRELESS PROFESSIONAL
14.5.1.3 electrode position
Only one channel is used.
• Place a small electrode on the distal motor point of the vastus medialis, which innervates the oblique
fibres.
• A second electrode is placed at the upper end of the vastus medialis at around mid-thigh level.
For optimum effectiveness, the positive pole should preferably be positioned on the lower electrode
corresponding to the distal motor point of the vastus medialis.
This placement of electrodes makes it possible to focus contraction of the vastus medialis, which cannot
be achieved during voluntary exercises.
14.5.1.4 Patient position
The focused contraction of the vastus medialis moves the patella upward and inward, thus re-centring the
kneecap and reducing the joint stresses in the lateral compartment of the knee.
This makes it possible to place the patient in a sitting position with the knee bent at 60 – 90° in order to
apply high stimulation energies to the vastus medialis.
During stimulation, the patient’s ankle will be tied firmly to the chair or the medical table on which he/she
is seated.
In case the patient finds this position painful, the first sessions will be carried out with the knee in full
extension.
After this, we will try to gradually put the knee in a flexed position.