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At the metatarsophalangeal joint the plantar plate plays an important role in the foot's weight-bearing function. The plantar plate is attached to the proximal phalanx, to the major longitudinal bands of the plantar fascia, and to the collateral ligaments. Together with the collateral ligaments, it forms a soft tissue box which is connected to ...
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 ...
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
The system that comes closest to directing treatment has been devised by Melone. This system breaks distal radius fractures down into 4 components: radial styloid, dorsal medial fragment, volar medial fragment, and radial shaft. The two medial fragments (which together create the lunate fossa) are grouped together as the medial complex. [8]
Most finger dislocations occur in the middle of the finger (PIP) and are complicated by ligamentous injury (volar plate). [8] Since most dislocations involving the joint near the fingertip (DIP joint) are due to trauma, there is often an associated fracture or tissue injury. [8]
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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]
An avulsion fracture is a bone fracture which occurs when a fragment of bone tears away from the main mass of bone as a result of physical trauma. This can occur at the ligament by the application of forces external to the body (such as a fall or pull) or at the tendon by a muscular contraction that is stronger than the forces holding the bone ...