Knuckle
<templatestyles src="Module:Hatnote/styles.css"></templatestyles>
| Knuckle | |
|---|---|
The major knuckles of the hand
|
|
| Identifiers | |
| TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terminology
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
|
|
<templatestyles src="Module:Hatnote/styles.css"></templatestyles>
The knuckles are the joints of the fingers which are brought into prominence when the hand is clenched and a fist is made. The word is cognate to similar words in other Germanic languages, such as the Dutch "Knokkel" (knuckle) or German "Knöchel" (ankle), i.e., Knöchlein, the diminutive of the German word for bone (Knochen). Anatomically, it is said that the knuckles consist of the metacarpophalangeal[1] (MCP) and interphalangeal (IP) joints of the finger. The knuckles at the base of the fingers may be referred to as the 1st[1] or major knuckles while the knuckles at the midfinger are known as the 2nd[2] and 3rd, or minor, knuckles. However, the ordinal terms are used inconsistently, and can be found referring to any of the knuckles.[3][4]
The physical mechanism behind the popping or cracking sound heard when cracking joints such as knuckles is still uncertain, although it is widely believed to be caused by synovial fluid filling the vacuum left by the joint's displacement.[5][6]
Gallery
-
Clenched fist with knuckles (encircled in red)
-
MotorcycleRacingGlove.jpg
Motorcycle racing gloves with titanium knuckle protectors
References
- ↑ 1.0 1.1 Utah Mountain Biking; Thumb Sprain; First as metacarpo.
- ↑ Second knuckle as thumb's interphalangeal, "anchor knuckle" as metacarpophalangeal
- ↑ First knuckle as thumb's interphalangeal
- ↑ First knuckle as distal interphalangeal
- ↑ Johns Hopkins Arthritis Center, Knuckle Cracking and Arthritis
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
This article incorporates text from a publication now in the public domain: Lua error in package.lua at line 80: module 'strict' not found.
<templatestyles src="Asbox/styles.css"></templatestyles>
 |
This anatomy article is a stub. You can help Wikipedia by expanding it. |
