Objective: To investigate atrophy and weakness of the quadriceps femoris muscle group in patients with PFPS using ... In all cases the trauma resulted from a direct blow to the anterior aspect of the ...

Left hip external rotators Rectus femoris Paraspinals Left hemi-diaphragm Muscles of the anterior pelvic outlet (right adductors, levator ani, and obturator internus) Conversely, muscles that may ...

During quadriceps contraction, the muscle belly of the rectus femoris could be seen to bunch up and move ... The proximal tendon had a normal appearance and was clearly attached to the anterior ...