Hand injuries. Causes of hand injuries can include knocks, blows, jamming a finger, and repetitive strain. The hands and wrists contain many different bones, joints, and connective tissues, such as ligaments, tendons, nerves, and blood vessels.
CARPAL TUNNEL SYNDROME
Carpal tunnel syndrome is a common condition that causes pain, numbness, and tingling in the hand and arm. The condition occurs when one of the major nerves to the hand — the median nerve — is squeezed or compressed as it travels through the wrist.
A ganglion cyst is a small sac of fluid that forms over a joint or tendon (tissue that connects muscle to bone). Inside the cyst is a thick, sticky, clear, colorless, jellylike material. Depending on the size, cysts may feel firm or spongy. One large cyst or many smaller ones may develop.
DE QUERVAIN'S TENOSYNOVITIS
The main symptom of De Quervain’s tenosynovitis is swelling and pain at the base of the thumb. De Quervain’s tenosynovitis is the inflammation of the sheath, or synovium, that surrounds the two tendons that run between the wrist and the thumb. … In the thumb, they are involved in moving the thumb.
TRIANGULAR FIBROCARTILAGE COMPLEX TEAR
The triangular fibrocartilage complex (TFCC) is a cartilage structure located on the small finger side of the wrist that, cushions and supports the small carpal bones in the wrist. The TFCC keeps the forearm bones (radius and ulna) stable when the hand grasps or the forearm rotates. An injury or tear to the TFCC can cause chronic wrist pain.
Dupuytren’s contracture is a condition in which one or more fingers become permanently bent in a flexed position. It usually begins as small hard nodules just under the skin of the palm. It then worsens over time until the fingers can no longer be straightened.