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HAVS, also known as vibration white finger (VWF) or dead finger, [1] is a secondary form of Raynaud's syndrome, an industrial injury triggered by continuous use of vibrating hand-held machinery. Use of the term vibration white finger has generally been superseded in professional usage by broader concept of HAVS, although it is still used by the ...
For many decades, the physical mechanism that causes the cracking sound as a result of bending, twisting, or compressing joints was uncertain. Suggested causes included: Cavitation within the joint—small cavities of partial vacuum form in the synovial fluid and then rapidly collapse, producing a sharp sound. [7] [8] Rapid stretching of ...
Scraping a chalkboard (also known as a blackboard) with one's fingernails produces a sound and feeling which most people find extremely irritating. The basis of the innate reaction to the sound has been studied in the field of psychoacoustics (the branch of psychology concerned with the perception of sound and its physiological effects).
Mallet finger occurs in similar situations as a jammed finger. The tendon that extends the tip of the finger is torn due to trauma causing it to flex beyond normal range. [17] It is characterized by a difficulty extending the finger or opening the hand. [19] Symptoms common to jammed fingers are likely, though a painless mallet finger is not ...
Gross clubbing – Thickening of the whole distal (end part of the) finger (resembling a drumstick) Hypertrophic osteoarthropathy – Shiny aspect and striation of the nail and skin Schamroth's sign or Schamroth's window test (originally demonstrated by South African cardiologist Leo Schamroth on himself) [ 16 ] is a popular test for clubbing.
Simultaneous finger guns with both hands can also be used to underscore the punchline of a joke, something of a visual equivalent to a "rimshot" sound effect. Finger heart is a hand gesture in which the subject has a palm up fist, raises their index finger and brings their thumb over it so as to form a small heart shape. It signals a similar ...
A broken finger or finger fracture is a common type of bone fracture, affecting a finger. [1] Symptoms may include pain, swelling, tenderness, bruising, deformity and reduced ability to move the finger. [2] Although most finger fractures are easy to treat, failing to deal with a fracture appropriately may result in long-term pain and disability ...
Climber's finger is one of the most common climbing injuries within the sport of rock climbing, accounting for about 30% of finger injuries seen in climbers. [1] It is an overuse injury that usually manifests in a swollen middle or ring finger due to a damaged flexor tendon pulley , normally the A2 or A4 pulley.