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( Tendon) A tendon (or sinew) is a tough band of fibrous connective tissue that usually connects muscle to bone^[1] and is capable of withstanding tension. Tendons are similar to ligaments except that ligaments join one bone to another. Tendons and muscles work together and can only exert a pulling force.

Normal healthy tendons are composed of parallel arrays of collagen fibers closely packed together. The fibers are mostly collagen type I, however there are also collagen type III and V present. These collagens are held together with other proteins, particularly the proteoglycan, decorin and, in compressed regions of tendon, aggrecan. The tenocytes produce the collagen molecules which aggregate end-to-end and side-to-side to produce collagen fibrils. Fibril bundles are organized to form fibers with the elongated tenocytes closely packed between them. Collagen fibers coalesce into macroaggregates. Groups of macroaggregates are bounded by connective tissue endotendon and are termed fascicles. Groups of fascicles are bounded by the epitendon and peritendon to form the tendon organ.

Blood vessels may be visualized within the endotendon running parallel to collagen fibers, with occasional branching transverse anastomoses.

The internal tendon bulk is thought to contain no nerve fibers, but the epi- and peritendon contain nerve endings, while Golgi tendon organs are present at the junction between tendon and muscle.

Tendon Subcategories Tendon Articles Anti Aging Natural Skin Care Products: Pig Tendons? by Heather Fields Recently, I read the FDA approved a new product for injections to help reduce severe wrinkling and folds within the skin. The Wall Street Journal quoted the company stating that the injected treatment is made from “naturally sourced collagen.” The ar... The List of Tendonitis Cures by Steve Madigan This article is going to discuss many of the tendonitis cures. Let us first understand the terminology. I would think in some cases that people could call some of these tendinitis cure, tendonitis cures, tendonitis remedies and even tendonitis tr... Foot Tendonitis or Achilles Heel Tendonitis by Steve Madigan One body part that most every uses each and every day and the way we get to and from places are our feet. This is the main reason that it makes sense to take care of our feet, the best we can. There are some people who do most of their work on ... Achilles Tendonitis - Causes, Symptoms and Treatment Tips by Juliet Cohen Achilles tendinitis is inflammation, irritation, and swelling of the Achilles tendon (the tendon that connects the muscles of the calf to the heel). Achilles tendonitis is also called tendonitis of the heel. Achilles tendonitis is a common overuse in... Shoulder Tendonitis Surgery - Rotator Cuff Tendonitis by Steve Madigan First let's find out what shoulder tendonitis or rotator cuff tendonitis is? There are several other names that this can be called. Some are known as tennis shoulder, pitcher's shoulder and even a shoulder impingement. These are all common name... Bursitis Tendonitis; Causes, Treatments and Remedies by Steve Madigan First things first. What exactly are tendons? Tendons are the elastic ligaments that will connect the muscle to the bone. If something happens with the tendons (such as a breakdown), tendonitis can and most probably occur. If tendonitis does o... Piano and the Risk of Tendonitis by Paul Tobey As someone who has lived through 3 incredibly painful bouts of tendonitis, both in my left arm and right arm, I thought it important to pass on some information that has helped me deal with this in the past. It is important to understand that... Pain Management: Calcific Tendonitis by Steve Madigan Calcific tendonitis is a disorder of the shoulder/rotator cuff, and is caused by calcium deposits on the tendon. While these deposits can form on any tendon in your body, they are very common in the shoulder. Depending on the stage of the developi... How to Deal with Arm Tendonitis by Steve Madigan There are people who have pain that could be from there shoulder to there wrist. Sometimes they can end up with tendonitis in forearm. They may have injured there arm picking up a heavy object or it could have happened slowly over time. What arm t... Wrist Tendonitis Treatment - Most Effective Methods by Steve Madigan With the advent of computers and more and more people using them in there day to day activity, wrist tendonitis is a common injury. What happens with this is the tendons around the wrist become inflamed. Doctors call the injury tenosynovitis whi...