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A Rzeppa-type CV joint. A constant-velocity joint (also called a CV joint and homokinetic joint) is a mechanical coupling which allows the shafts to rotate freely (without an appreciable increase in friction or backlash) and compensates for the angle between the two shafts, within a certain range, to maintain the same velocity.
Joint cracking is the manipulation of joints to produce a sound and related "popping" sensation. It is sometimes performed by physical therapists, chiropractors, and osteopaths [1] pursuing a variety of outcomes. The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems.
Lawrie recommends seeing an orthopedic doctor if you have joint noises that come with pain or if it feels like your joint is dislocating when the noise happens. This video was produced by Olivia ...
Almost every joint in the body can be 'cracked' in this way, but the joints which require the least amount of force to produce this effect include the hallux (big toes), the knuckles and the neck joints. This phenomenon is caused when the movement of the joint lowers the pressure of its synovial fluid, causing the bubbles to form and burst.
Noises from the joint during mandibular movement, which may be intermittent. [18] Joint noises may be described as clicking, [2] popping, [20] or crepitus (grating). [19] TMJ dysfunction is commonly associated with symptoms affecting cervical spine dysfunction and altered head and cervical spine posture. [26]
Condylar resorption, also called idiopathic condylar resorption, ICR, and condylysis, is a temporomandibular joint disorder in which one or both of the mandibular condyles are broken down in a bone resorption process. This disorder is nine times more likely to be present in females than males, and is more common among teenagers.
Modern rear wheel drive cars with independent rear suspension typically use CV joints at the ends of the rear axle halfshafts and increasingly use them on the drive shafts. Constraint – Continuum mechanics – a branch of mechanics that deals with the mechanical behavior of materials modeled as a continuous mass rather than as discrete particles.
Unlike the Hooke's type universal joint which has a sinusoidal output, the Thompson coupling is a true constant velocity joint. Reference: cvcoupling.com - Simon Purser This page should not (just) give so much background about the automotive application, this is just an application and this article is about the CV joint itself.