Tendinitis or bursitis of the shoulder is one of the most common injuries among those who participate in sports involving arm extension above the head (eg swimming and baseball). It is an inflammation of the tendons or bursae that pass through a narrow channel, even more restricted when the arm is raised.
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The flexor muscles of the fingers are located in the forearm and tendons attach to the small bones of the fingers and thumb. When we flex or straighten the fingers, the flexor tendons slide into a small tunnel, called the tendon sheath, which keeps the tendon in place near the bones. The flexor tendon may progressively become irritated under this tendinous sheath. This will gradually result in a thickening of the tendon and the probable appearance of nodules causing a much more difficult passage of the tendon in the tunnel. In the presence of finger (or thumb) trigger, the tendon will be temporarily blocked during passage through the tunnel (tendon sheath) during the flexion / extension of the finger.
The carpal tunnel is a small narrow tunnel located at the wrist. Some carpal bones and the transverse carpal ligament define the tunnel. The median nerve travels from the forearm to the hand as it passes through this tunnel. This nerve controls the sensation of the palmar surface of the first 3 fingers and the muscles of the base of the thumb. The tendons of the finger flexors also pass through this tunnel. When the tissues around the tendons of the flexors become irritated and swollen, this can cause pressure on the median nerve, causing the carpal tunnel syndrome. The median nerve may also be irritated or compressed by certain muscles during its passage in the arm, particularly in the pronatoric round muscle.
Adhesive capsulitis is a pain that is often very intense in the shoulder accompanied by marked loss of movement. It is divided into three phases that can be spread over more than 2 years. The first being the painful phase, the second being the “frozen” phase and the last being the recovery phase.
Osteoarthritis is a degenerative phenomenon attacking the cartilaginous aspect of the joints. Although this degeneration is only the fact of age, it can cause pain in some.
Osteoarthritis is a very common phenomenon in the population, especially in the over 50s. It can still start between 20 and 30 years. Men and women are affected in equal proportions.