This is an image preview.
Start a Free Account
to view the full image.

Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
Listen to MedLink on the go with Audio versions of each article.

Myofascial pain patterns of the quadratus lumborum muscle

Download

Myofascial trigger points (x's) in the quadratus lumborum are one of the most common sources of low back pain and the "failed surgical back syndrome." Symptoms include persistent, deep aching pain at rest that is most severe in the unsupported upright position. Myofascial trigger points typically restrict forward bending, turning, and leaning to the opposite side. Essential (solid red) and spillover (stippled red) referred pain commonly projects to the crest of the ilium, the sacroiliac joint, and the greater trochanter, often extending to the groin, inner thigh, and abdomen. (From Travell JG, Simon DG. Myofascial origins of low back pain. Volume 2. Torso muscles. Postgrad Med 1992;73:188, with permission.)