What is finger flexor reflex?
The finger flexor reflex1, is a C8 spinal segmental reflex. It is elicited by flicking the distal end of digits that are supported in a relaxed posture. The sudden stretching of the finger flexors causes them to flex.
What does the flexor reflex do?
The flexor reflex is a polysynaptic reflex that results in flexor muscle contraction. By recruiting flexor muscles across several joints, the flexor reflex is an example of an interjoint reflex that has tissue protective value such as generating quick withdrawal from a noxious stimulus.
What is an example of flexor reflex?
Flexor Reflexes These reflexes are useful in the normal animal to help prevent injury from noxious stimuli and to allow withdrawal of the limb away from a noxious stimulus. An example is a flexor reflex of the pelvic limb of a dog, which causes flexion of the hock, stifle, and hip.
What is the medical term for finger flexor reflex?
Hoffmann’s reflex. Hoffmann’s reflex (Hoffmann’s sign, sometimes simply “Hoffmann’s”, also finger flexor reflex) is a neurological examination finding elicited by a reflex test which can help verify the presence or absence of issues arising from the corticospinal tract.
What causes the finger flexors to contract involuntarily?
In a positive response, sudden stretching of the finger flexors causes the finger flexors to involuntarily contract (therefore the finger flexion reflex is no different from any other muscle stretch reflex). There are many ways to elicit this finding, each with its own eponym (e.g., Hoffman sign, Rossolimo sign, Troemner sign, Bechterew reflex ).
What are the components of a flexor reflex?
Flexor reflexes are spinal polysynaptic reflexes that can be produced by trains of electrical stimuli delivered to cutaneous or mixed nerves. 1 The normal flexor reflex consists of two EMG components. The first component appears at a higher threshold.
How did Hoffmann’s reflex get its name from?
Hoffmann’s reflex. Hoffmann’s reflex (Hoffmann’s sign, sometimes simply “Hoffmann’s”, also finger flexor reflex) is a neurological examination finding elicited by a reflex test which can help verify the presence or absence of issues arising from the corticospinal tract. It is named after neurologist Johann Hoffmann.