The thumb CMC (or trapeziometacarpal) joint is a semi-constrained, biconcave saddle joint between the distal surface of the trapezium and the base of the first metacarpal.

The carpometacarpal joint of the thumb (pollex), also known as the first carpometacarpal joint, or the trapeziometacarpal joint (TMC) because it connects the trapezium to the first metacarpal bone, plays an irreplaceable role in the normal functioning of the thumb. The most important joint connecting the wrist to the metacarpus, osteoarthritis ...

2025年1月13日 · Diagnosis is made clinically with tenderness to palpation over the thumb CMC joint, a painful CMC grind test, and radiographs of the hand showing osteoarthritis of the 1st CMC joint. Treatment can be conservative (therapybracing, injections) or operative, depending on the severity of symptoms and the stage of disease.

2023年7月5日 · The carpometacarpal (CMC) joints are articulations between the carpal bones (carpo-) and metacarpal bones (-metacarpal) of the hand. There are five CMC joints in total, out of which the carpometacarpal joint of thumb (trapeziometacarpal …

The thumb CMCJ is a biconcave–convex saddle joint that allows flexion/extension, adduction/abduction and limited rotation through the joint. There are 16 ligaments that have been described that help stabilise the joint. The most important of these ligaments appears to be the deep anterior oblique ligament.

The first CMC (trapeziometacarpal) joint is functionally the most important joint of the thumb ray because it allows movement of the entire column of the thumb. Movements of this joint are quite complex, involving multiplanar motion that includes anteposition, retroposition, adduction, and …

Both joint mobilisation and immobilisation are thought to be effective in the treatment of first carpometacarpal joint (CMCJ) osteoarthritis (OA). The objective of this review was to establish whether either intervention reduced pain and improved pinch strength in people with first CMCJ OA in the short term and assess whether one intervention ...

2012年11月23日 · Severity of first carpometacarpal joint osteoarthritis is evaluated according to clinical and radiographic examinations. When nonsurgical therapies such as splinting and joint injection fail, there are several surgical options to restore function and decrease pain at the first carpometacarpal joint.

Use of thumb muscles during function to stabilise the CMCJ to reduce / prevent subluxating shear forces. Functional kinematic approach superior to traditional strengthening

2025年1月17日 · First Carpometacarpal Joint. The thumb (pollex) carpometacarpal joint, also referred to as the trapeziometacarpal joint (TMC), is the first carpometacarpal joint. It is necessary for the thumb’s proper function and serves as a link between the trapezium and the first metacarpal bone.