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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.
This can cause any muscle that is innervated by the radial nerve to become partially or fully paralyzed. An example of this is wrist drop, in which the fingers, hand, or wrist is chronically in a flexed position because the radial nerve cannot innervate the extensor muscles due to paralysis. This condition, like other injuries from compressed ...
The Hoffmann's reflex test itself involves loosely holding the middle finger and flicking the fingernail downward, allowing the middle finger to flick upward reflexively. A positive response is seen when there is flexion and adduction of the thumb on the same hand. [4] Eg. in hypertonia, the tips of other fingers flex and the thumb flexes and ...
Posture can signal an individual's position in social hierarchy. A comparison of two different postures. On the left is an example of a more energized attitude; on the right is an example of a depressed attitude. If two people of different social standings talk to each other, the person with a higher position usually takes a more relaxed attitude.
Maintaining a shortened position for a prolonged period of time leads to: fibrous adhesion formation, loss of sarcomeres, and a loss of tissue extensibility. [ 1 ] For example, after a fracture when immobilization is done by casting the limb in plaster of paris, the muscle length shortens because the muscle is not used for a large span of time.
Dupuytren's contracture (also called Dupuytren's disease, Morbus Dupuytren, Palmar fibromatosis and historically as Viking disease or Celtic hand) is a condition in which one or more fingers become permanently bent in a flexed position. [2]
It is a pronation–supination tremor that is described as "pill-rolling"; that is, the index finger of the hand tends to get into contact with the thumb, and they perform a circular movement together. [1] [2] Such term was given due to the similarity of the movement in PD patients with the former pharmaceutical technique of manually making ...
Asterixis (more colloquially referred to as flapping tremor) is not actually a tremor, but rather a negative myoclonus.This movement disorder is characterized by an inability to maintain a position, which is demonstrated by jerking movements of the outstretched hands when bent upward at the wrist (which can be similar to a bird flapping its wings, hence the name "flapping tremor").