Because of the decreased blood supply in ligaments, rest alone is often not sufficient for the body to heal itself. And, because ligaments and tendons do not contain muscle fiber, exercise will not heal an injured ligament or tendon. Any popping, snapping or clicking joint. A joint that is unstable snaps, clicks or pops. Any torn tendon or tendonitis that does not resolve after six weeks.
Tendons are like ligaments in that they are fibrous tissue and they attach to the bone.
They also have a lack of blood supply like ligaments, and therefore have a poor healing ability. Proliferative therapy causes a permanent strengthening of torn or lax tendons just as it does for torn or lax ligaments. Fibroblasts are cells or tissues from which connective tissue is grown. Whether or not these substances do as described is no longer under scientific question, as at the University of Iowa, and at other locations, more than 35 years ago, tests were performed on animals presumably not subject to human placebo effects. The treatment worked on them, promoting the growth of fibroblasts and collagen tissue at the sites of injection, tightening up tendons and ligaments.