Connective tissues that surround the muscles of the back are on average, thicker and less pliable in people with chronic low back pain.
Assisted flexibility training for the lower left lumbar quadrant.
Normally, these connective tissues are composed of alternating layers of tightly woven dense fibers that can bear substantial loads, and loose areolar tissue, which contains large quantities of water and allows the adjacent dense layers to glide past one another. In addition to having thicker connective tissue overall, people with low-back pain show a decreased gliding motion of dense layers, suggesting that a fibrotic process could cause the decreased mobility.
Helene M. Langevin is a visiting professor of medicine and Director of the Osher Center for Integrative Medicine at Brigham and Women’s Hospital, Harvard Medical School, and a professor of neurological sciences at the University of Vermont