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Boutonniere deformity is a deformed position of the fingers or toes, in which the joint nearest the knuckle (the proximal interphalangeal joint, or PIP) is permanently bent toward the palm while the farthest joint (the distal interphalangeal joint, or DIP) is bent back away (PIP flexion with DIP hyperextension).
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.
Severing of the central slip by lacerations or a dislocation of the middle phalanx towards the bottom of the finger causes the tendon to tear off the bone [1] A secondary cause of boutonnière deformity is rheumatoid arthritis causing chronic inflammation that eventually results in tendon damage.
Dislocations are commonly caused by sudden trauma to the joint like during a car accident or fall. A joint dislocation can damage the surrounding ligaments, tendons, muscles, and nerves. [2] Dislocations can occur in any major joint (shoulder, knees, hips) or minor joint (toes, fingers). The most common joint dislocation is a shoulder ...
The finger is then splinted to prevent further injury to the digit as it heals. Splint material and type varies depending on the reduction conducted. [26] Splint-assisted healing is most dependent on patient compliance. [19] Splinting for less than the recommended duration may lead to less effective healing and loss of function. [16]
Buddy wrapping, also called neighbour strapping [1] or buddy taping, is the act of bandaging a damaged or particularly a fractured finger or toe together with a healthy, uninjured one. The bandage or medical tape is usually stiff, not allowing the digits to move; the healthy digit acts as a splint , keeping the damaged one in a natural position ...
Ulnar deviation, also known as ulnar drift, is a hand deformity in which the swelling of the metacarpophalangeal joints (the big knuckles at the base of the fingers) causes the fingers to become displaced, tending towards the little finger. [1]
A hand imitating an ulnar claw. The metacarpophalangeal joints of the 4th and 5th fingers are extended and the Interphalangeal joints of the same fingers are flexed.. An ulnar claw, also known as claw hand or Spinster’s Claw, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals.
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