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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 ...
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.
The plantar plate is firm but flexible fibrocartilage with a composition similar to that found in the menisci of the knee (composed roughly of 75% type-I collagen), and can thus withstand compressive loads and act as a supportive articular surface. Most of its fibers are oriented longitudinally, in the same direction as the plantar fascia, and ...
Injuries that force the finger towards the back of the hand may cause damage to the volar plate. [12] This is a ligament on the palm side of the hand that prevents hyperextension. [13] Volar plate damage may be assessed by pressing the finger bones from the back towards the palm.
Swan neck deformity has many of possible causes arising from the DIP, PIP, or even the MCP joints. In all cases, there is a stretching of the volar plate at the PIP joint to allow hyperextension, plus some damage to the attachment of the extensor tendon to the base of the distal phalanx that produces a hyperflexed mallet finger.
Fracture with a dorsal tilt. Dorsal is left, and volar is right in the image. There are a number of ways to classify distal radius fractures.Classifications systems are devised to describe patterns of injury which will behave in predictable ways, to distinguish between conditions which have different outcomes or which need different treatments.
Collisions at home plate have decreased in recent years thanks to rule changes, but this one still ended badly. An MLB catcher suffered neck and knee injuries during a brutal home plate collision ...
Degenerative changes following injury to the wrist are common, with many developing arthritis. [7] Persistent nerve pain years after the initial trauma is not uncommon. [7] Most finger dislocations occur in the middle of the finger (PIP) and are complicated by ligamentous injury (volar plate). [8]