ultrasound image, vastus lateralis, active motion of knee extension, short axis image
counterclockwise. The vastus lateralis moves more than the vastus medialis. In the cross section of the center of the thigh, the vastus intermedius is located from 11:00 to 5:00 on a clock. The vastus lateralis is located from 2 to 5 o'clock.
Clinical use
The physical therapist assists in the counterclockwise movement of the vastus lateralis and vastus intermedius as the knee joint extends. When massaging, The physical therapist needs to know the exact alignment of each muscle.
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