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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 ...
The H-reflex (or Hoffmann's reflex) is a reflectory reaction of muscles after electrical stimulation of sensory fibers (Ia afferents stemming from muscle spindles) in their innervating nerves (for example, those located behind the knee).
Froment sign is the flexion of the interphalangeal joint of the thumb rather than adduction of the entire thumb. Note that the flexor pollicis longus is nearly always innervated by the anterior interosseous branch of the median nerve. Simultaneous hyperextension of the thumb MCP joint is indicative of ulnar nerve compromise. This is also known ...
Hoffmann's sign: Johann Hoffmann: neurology: corticospinal tract lesions: tapping distal phalanx of 3rd or 4th finger elicits flexion of same in thumb Hollenhorst plaque: Robert Hollenhorst: ophthalmology: hypertension, coronary artery disease, and/or diabetes: cholesterol embolus(i) of retinal artery(ies) Homans' sign: John Homans: thrombosis ...
A positive test is marked by restricted active thumb flexion with pain or cramping discomfort in the palmar and radial sides of the distal (lower) forearm or wrist. [10] The magnetic resonance imaging (MRI) can confirm and localise Linburg and Comstock syndrome. [ 10 ]
Tinel's sign (also Hoffmann-Tinel sign) is a way to detect irritated nerves. It is performed by lightly tapping over the nerve to elicit a sensation of tingling or "pins and needles" in the distribution of the nerve. [1] [2] Percussion is usually performed moving distal to proximal. [2] It is named after Jules Tinel. [3] [4] [5]
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Anterior interosseous syndrome is a medical condition in which damage to the anterior interosseous nerve (AIN), a distal motor and sensory branch of the median nerve, classically with severe weakness of the pincer movement of the thumb and index finger, and can cause transient pain in the wrist (the terminal, sensory branch of the AIN innervates the bones of the carpal tunnel).