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Hypermobile metacarpo-phalangeal joints Hyperextension of the thumb Hyperextension of the hand. Hypermobility syndrome is generally considered to comprise hypermobility together with other symptoms, such as myalgia and arthralgia. It is relatively common among children and affects more females than males.
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.
Hitchhiker's thumb; Other names: Distal hyperextensibility of the thumb, thumb hypermobility, Z-shaped deformity, [1] duck-bill thumb [2] Example of bilateral hitchhiker's thumb
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.
Current treatments for hand deformities can be classified by non-surgical or surgical methods. Non-surgical options aim to reduce symptoms and maintain function, such as medicinal treatments like corticosteroids, physical therapy, and splinting. Surgical procedures, however, are rather reserved for extreme cases, but this depends on the ...
This area may be tender, meaning it is painful when pressed. There may also be hyperextension of the metacarpophalangeal joint. The thumb metacarpal deviates towards the middle of the hand (adduction). [12] Also a grinding sound, known as crepitus, can be heard when the TMC joint is moved, more so when axial pressure is applied. [13]
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).
The palmar plate is supported by a ligament on either side of the joint called the collateral ligaments, which prevent deviation of the joint from side to side. The ligaments can partially or fully tear and can avulse with a small fracture fragment when the finger is forced backwards into hyperextension.