Basilar joint arthritis of the thumb, also known as CMC Carpal-MetaCarpal joint arthritis, is a very common but treatable condition. The CMC joint of the thumb is where the metacarpal bone of the thumb attaches to the trapezium bone of the wrist, and it allows for thumb flexion and extension as well as rotational movement. This complex joint is anchored by the volar oblique ligament. Frequently, as we age, the volar oblique ligament will weaken or rupture. This causes the CMC joint to dislocate.
Thumb Arthritis | UW Orthopaedics and Sports Medicine, Seattle
Pain in the basal joint caused by arthritis makes it difficult for patients to grip and hold or twist objects between the thumb and fingers. This surgical procedure removes and rebuilds the basal joint. Arthritis of the thumb, also known as basal joint arthritis, occurs when the cartilage of the thumb joint carpometacarpal joint wears away from the bone. This cartilage normally acts as a cushion between the bones of the joint, and when it is worn away, the direct contact and friction between the bones causes pain, swelling, decreased strength and limited range of motion. Basal joint arthritis is commonly caused by inflammation in the lining of the joint, which in addition to pain, may result in stiffness, swelling and loss of movement in the thumb area.
The universal joint at the base of the thumb, between the metacarpal and trapezium bones, often becomes arthritic as people get older. It is osteoarthritis, which is loss of the smooth cartilage surface covering the ends of the bones in the joints. The cartilage becomes thin and rough, and the bone ends can rub together. Osteoarthritis can develop at any age, but usually appears after the age of It may run in families, and it sometimes follows a fracture involving the joint many years before.
Basal joint arthritis is one of the most common forms of thumb arthritis. Also called basal thumb arthritis, this is arthritis in the basal joint at the base of the thumb. The basal joint is where the metacarpal bone of the thumb meets the trapezium bone in the wrist. This condition can be very disabling because use of the thumb is necessary for nearly every manual, from writing to opening a jar to buttoning a shirt.