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Breakage: K-wires may bend or break, especially if the fracture does not heal. [2] Loss of fixation: Smooth K-wires may back out of the bone losing the fixation. This is especially likely if they pass between two mobile bones. Migration of K-wires can occur; instead of backing out the wire can move deeper.
A post-operative photo of repair of a complete rupture of the ulnar collateral ligament. Note the K-wire to brace the joint. The ulnar collateral ligament is an important stabilizer of the thumb. Thumb instability resulting from disruption of the UCL profoundly impairs the overall function of the involved hand.
They run 78[meaning a fracture of the phalanges of the hand].[number-code of the finger, with thumb=1 and the little finger=5].[number-code of phalanx, counting 1 to 3 outwards from the hand].[number-code of location on the bone, with 1 being the inner end, 3 the outer, and 2 in-between].
Surgery will put the finger in a neutral position and drill a wire through the distal interphalangeal joint (DIP) to the proximal interphalangeal joint (PIP), forcing immobilization. An example of a splint for mallet finger.
The tendons of the toe are attached to those of the radial flexor and extensors muscles of the wrist to create more stability to the MTP joint. K-wires are placed to fixate the bones in the desired position. Once the bones are secured anastomosis are made between the vessels of the toe and the vessels of the forearm.
[number-code of phalanx, counting 1-3 outwards from the foot].[number-code of location on the bone, with 1 being the inner end, 3 the outer, and 2 in-between]. [10] So, for instance, 88.1.2.1 means a fracture to the big toe's innermost bone, at the proximal end. [10] [11] A letter can be added to describe the fracture pattern. [11]
It finally attaches onto the base of the distal phalanx of the thumb. It is innervated by the anterior interosseus branch of the median nerve (C7-C8) [3] Three dorsal forearm muscles act on the thumb: The abductor pollicis longus originates on the dorsal sides of both the ulna and the radius, and from the interosseous membrane.
Distal radius fractures are the most common fractures seen in adults and children. [4] Distal radius fractures account for 18% of all adult fractures with an approximate rate of 23.6 to 25.8 per 100,000 per year. [25] For children, both boys and girls have a similar incidence of these types of fractures, however the peak ages differ slightly.