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Wrist osteoarthritis is gradual loss of articular cartilage and hypertrophic bone changes (osteophytes). While in many joints this is part of normal aging (senescence), in the wrist osteoarthritis usually occurs over years to decades after scapholunate interosseous ligament rupture or an unhealed fracture of the scaphoid.
Arthrosis, osteoarthrosis, degenerative arthritis, degenerative joint disease The formation of hard knobs at the middle finger joints (known as Bouchard's nodes ) and at the farthest joints of the fingers (known as Heberden's nodes ) is a common feature of osteoarthritis in the hands.
The Rolex Watch Company improved Harwood's design in 1930 and used it as the basis for the Shants Company, in which the centrally mounted semi-circular weight could rotate through a full 360° rather than the about 200° of the 'bumper' winder. Rolex's version also increased the amount of energy stored in the mainspring, allowing it to run ...
In watch movements the wheels and other moving parts are mounted between two plates, which are held a small distance apart with pillars to make a rigid framework for the movement. One of these plates, the front plate just behind the face, is always circular, or the same shape and dimensions as the movement. The back plate has various shapes:
The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems. However, this has been debunked . The cracking mechanism and the resulting sound is caused by dissolved gas (nitrogen gas) cavitation bubbles suddenly collapsing inside the joints. This happens when the joint cavity is stretched beyond ...
Watch movements require regular cleaning and lubrication, and the normal result of neglecting to get a watch cleaned is a watch stopped at full wind. As the watch movement collects dirt and the oil dries up, friction increases, so that the mainspring doesn't have the force to turn the watch at the end of its normal running period, and it stops ...
Reactive arthritis, previously known as Reiter's syndrome, [1] is a form of inflammatory arthritis [2] that develops in response to an infection in another part of the body (cross-reactivity). Coming into contact with bacteria and developing an infection can trigger the disease. [ 3 ]
Rheumatoid arthritis is an autoimmune disorder that often affects the hands and feet. [5] Other types of arthritis include gout, lupus, and septic arthritis. [3] [5] These are inflammatory based types of rheumatic disease. [2] Early treatment for arthritis commonly includes resting the affected joint and conservative measures such as heating or ...