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[3] [1] [2] This joint is formed by the trapezium bone of the wrist and the metacarpal bone of the thumb. This is one of the joints where most humans develop osteoarthritis with age. [4] Osteoarthritis is age-related loss of the smooth surface of the bone where it moves against another bone (cartilage of the joint).
The triquetral bone (/ t r aɪ ˈ k w ɛ t r əl,-ˈ k w iː-/; also called triquetrum, pyramidal, three-faced, and formerly cuneiform bone) is located in the wrist on the medial side of the proximal row of the carpus between the lunate and pisiform bones. It is on the ulnar side of the hand, but does not directly articulate with the ulna.
The carpometacarpal (CMC) joints are five joints in the wrist that articulate the distal row of carpal bones and the proximal bases of the five metacarpal bones.. The CMC joint of the thumb or the first CMC joint, also known as the trapeziometacarpal (TMC) joint, differs significantly from the other four CMC joints and is therefore described separately.
Osteoarthritis (OA) is a type of degenerative joint disease that results from breakdown of joint cartilage and underlying bone. [5] [6] It is believed to be the fourth leading cause of disability in the world, affecting 1 in 7 adults in the United States alone. [7]
Gamekeeper's thumb and skier's thumb are two similar conditions, both of which involve insufficiency of the ulnar collateral ligament (UCL) of the thumb. The chief difference between these two conditions is that skier's thumb is generally considered to be an acute condition acquired after a fall or similar abduction injury to the metacarpophalangeal (MCP) joint of the thumb, whereas gamekeeper ...
Osteoarthritis is caused by the break down of the smooth surface between two bones, known as cartilage, which can eventually lead to the two opposing bones coming in direct contact and eroding one another. OA symptoms typically begin with minor pain during physical activity, but can eventually progress to be present at rest.
The next joint, moving closer to the hand, is the proximal interphalangeal (PIP) joint. The thumb differs by only having two bones and one interphalangeal joint. [10] The injured finger may be examined to determine where the pain is worst. [3] If the finger is sprained or dislocated, pain will be worse at the joint rather than the bone. [3]
One person can have severe pain with a single small defect while another person can have very little pain with several large full thickness defects. [2] Since articular cartilage does not have a blood supply and chondrocytes (cells in articular cartilage) have limited mobility, the articular cartilage has very limited ability to heal itself.