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These bands help stabilise the volar plates over the metacarpal heads. [2] In contrast to the volar plates of the MCP joints of the fingers, the volar plate of the thumb MCP joint is a thick structure firmly attached to the base of the proximal phalanx. It forms the bottom of a two-sided box, the sides of which are made up of the collateral ...
For a Stener lesion to occur, a complete tear of the ulnar collateral ligament must be present. However, the Stener lesion can occur even in the absence of a tear of the accessory collateral ligament or volar plate. The Stener lesion is present in more than 80% of complete ruptures of the UCL of the thumb. [citation needed]
Volar plate damage may be assessed by pressing the finger bones from the back towards the palm. If either individual bone of the affected joint moves freely towards the palm, it is indicative of a tear. [2] Tears of the volar plate may lead to an avulsion fracture – when a piece of bone is pulled off with the ligament. [13]
A finger fracture may not keep Anthony Davis away from the court for long. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 ...
distal radius fracture with volar displacement: fall on outstretched hand with wrist in flexed position: Smith's fracture at Who Named It? Stieda fracture: Alfred Stieda: avulsion fracture of the medial femoral condyle at the origin of the medial collateral ligament: Stieda's fracture at TheFreeDictionary.com: Tillaux fracture: Paul Jules Tillaux
This is called a "palmar plate, or volar plate injury". [3] The palmar plate forms a semi-rigid floor and the collateral ligaments the walls in a mobile box which moves together with the distal part of the joint and provides stability to the joint during its entire range of motion.
Volar aspect of proximal phalanx of the thumb: Anatomical terminology [edit on Wikidata] ... The ulnar collateral ligament is an important stabilizer of the thumb.
In the most minor cases of Bennett fracture, there may be only small avulsion fractures, relatively little joint instability, and minimal subluxation of the CMC joint (less than 1 mm). In such cases, closed reduction followed by immobilization in a thumb spica cast and serial radiography may be all that is required for effective treatment.