Stretching the rectus femoris of the quadriceps femoris group. The rectus femoris is the only quadricep muscle that crosses the hip joint. It crosses it anteriorly with a vertical direction to its fibers, so it flexes the thigh at the hip joint and it anteriorly tilts the pelvis at the hip joint.
Stretching all hip flexors, including the rectus femoris of the quadriceps group, is extremely important for clients with lower crossed syndrome.
Pelvic musculature: 1. cross the LS joint onto the trunk 2. cross the hip joint onto the thigh/leg 3. pelvic floor muscles located wholly within the pelvis
Semispinalis capitis, pectineus, & vastus lateralis are unusual suspect muscles, often overlooked by manual therapists, that can cause pain and dysfunction.
Perhaps the one most important aspect of self-care for patellofemoral syndrome (PFS) is to strengthen the quadriceps femoris musculature.