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  2. Joint cracking - Wikipedia

    en.wikipedia.org/wiki/Joint_cracking

    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. However, this is not ...

  3. Can Knuckle Cracking Really Cause Arthritis? We Asked ... - AOL

    www.aol.com/knuckle-cracking-really-cause...

    It was once explained as air bubbles collapsing and therefore “popping” within the joint, however, largely thanks to a 2015 study that conducted MRI imaging of knuckle cracking, the process is ...

  4. Hypermobility (joints) - Wikipedia

    en.wikipedia.org/wiki/Hypermobility_(joints)

    Hypermobility, also known as double-jointedness, describes joints that stretch farther than normal. [2] For example, some hypermobile people can bend their thumbs backwards to their wrists and bend their knee joints backwards, put their leg behind the head or perform other contortionist "tricks".

  5. Crepitus - Wikipedia

    en.wikipedia.org/wiki/Crepitus

    Crepitus can easily be created and observed by exerting a small amount of force on a joint, thus 'cracking it'. This is caused by bubbles of nitrogen forming in the synovial fluid bursting. 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 ...

  6. Finger snapping - Wikipedia

    en.wikipedia.org/wiki/Finger_snapping

    A video of finger snapping Alternative snapping technique. Snapping (or clicking) one's fingers is the act of creating a snapping or clicking sound with one's fingers. . Primarily, this is done by building tension between the thumb and another (middle, index, or ring) finger and then moving the other finger forcefully downward, so it hits the palm of the same hand at a h

  7. Knuckle - Wikipedia

    en.wikipedia.org/wiki/Knuckle

    The physical mechanism behind the popping or cracking sound heard when cracking joints such as knuckles was elucidated in 2015 by cine MRI to be caused by tribonucleation as a gas bubble forms in the synovial fluid that bathes the joint. [5]

  8. Congenital trigger thumb - Wikipedia

    en.wikipedia.org/wiki/Congenital_trigger_thumb

    Congenital trigger thumb is a trigger thumb in infants and young children. Triggering, clicking or snapping is observed by flexion or extension of the interphalangeal joint (IPJ). In the furthest stage, no extension is possible and there is a fixed flexion deformity of the thumb in the IPJ.

  9. Trapeziometacarpal osteoarthritis - Wikipedia

    en.wikipedia.org/wiki/Trapeziometacarpal...

    Trapeziometacarpal osteoarthritis (TMC OA) is, also known as osteoarthritis at the base of the thumb, thumb carpometacarpal osteoarthritis, basilar (or basal) joint arthritis, or as rhizarthrosis. [ 3 ] [ 1 ] [ 2 ] This joint is formed by the trapezium bone of the wrist and the metacarpal bone of the thumb.