What does rhizarthrosis mean?
Trapeziometacarpal (TMC) arthritis ( also known as Rhizarthrosis ) is arthritis of the first carpometacarpal (CMC) joint of the thumb. The CMC joint of the thumb, or TMC joint plays a critical role in the normal functioning of the thumb.
What is Stage 3 CMC arthritis?
The thumb carpometacarpal (CMC) joint is a biconcave saddle joint between the thumb metacarpal and trapezium that allows for multiplanar movement….Table 1.
| Stage | Description |
|---|---|
| III | Advanced carpometacarpal joint space narrowing, sclerosis, and cystic changes with osteophytes or loose bodies > 2 mm |
What is Stage 4 CMC arthritis?
Stage IV: All the components of stage III along with destruction of the scaphotrapezial joint. At this stage the CMC joint is usually fixed and some patients may have little to no pain. Treatment: In early stages, stage I and sometimes stage II, con- servative treatment should be considered.
What kind of joint is the Carpometacarpal?
The carpometacarpal joints of the fingers are synovial plane joints that serve as the articulation between the carpals and the metacarpals and allow the bases of the metacarpal bones to articulate with one another.
What is bilateral rhizarthrosis?
Arthritis of the base of the thumb, also called rhizarthrosis, is wear of the cartilage at the joint between the trapezium bone and the base of the first metacarpal bone. Rhizarthrosis is the most common form of hand osteoarthritis.
What is Eaton Stage III arthritis?
Eaton stage III exhibits more severe joint narrowing, with osteophytes and debris greater than 2 mm in size. Eaton stage IV begins when there is involvement of the scaphotrapezial joint (1,4). Badia (4) described arthroscopic stages I to III of the arthritic CMC joint.
How successful is basal joint surgery?
Results. A very common procedure with long-lasting results, basal joint surgery removes the arthritis and is very effective in eliminating the pain. After the reconstruction, patients are again able to do many of the activities that they were unable to do because of the arthritis.
Which muscle is an important thumb Carpometacarpal CMC stabilizer in patients with thumb CMC osteoarthritis?
Dynamic stability of the thumb CMC joint is provided by nine muscles and tendons, of which the dorsal expansion of the abductor pollicis longus (APL) is the most important.
What does the carpometacarpal joint consist of?
The CMC joints are connections between the distal surfaces of the four distal carpal bones and the surfaces of the metacarpal bases of the medial four metacarpal bones. The second CMC joint is formed by the apposition of the trapezium, trapezoid, capitate and second metacarpal bones.
What kind of joint is the interphalangeal?
The interphalangeal joints of the hand are the hinge joints between the phalanges of the fingers that provide flexion towards the palm of the hand.
What is the difference between rheumatoid arthritis and arthrosis?
While arthrosis is caused by deterioration of cartilage between a person’s bones, rheumatoid arthritis is caused when a person’s immune system mistakes tissue in the joints for a foreign invader and attacks it. This causes inflammation and pain.