Piriformis syndrome is caused by a tight contracted piriformis muscle putting pressure on the sciatic nerve causing symptoms of tingling, numbness, and altered sensation. This muscle is often tight in people who sit for long periods of time. A common cause of this muscle being contracted and tight are trigger points. These trigger points are contracted knots within the belly of the muscle. These knots cause the muscle to become shortened. Trigger points will also cause pain on their own. This is usually felt as a deep achy pain in the glute and hip area, as well as in the back of the leg.


The Rectus Femoris muscle is a large muscle that makes up part of the quadriceps group. It functions to extend the knee and flex the hip. It originates on the anterior inferior iliac spine and part of the acetabulum. It’s insertion is the patella via the quadriceps tendon and tibial tuberosity via the patellar ligament. Trigger points in this muscle refer deep into the knee. This muscle is an often overlooked source of knee pain.






