Clasp-knife response - Wikipedia
Clasp-knife response refers to a Golgi tendon reflex with a rapid decrease in resistance when attempting to flex a joint, usually during a neurological examination. It is one of the characteristic responses of an upper motor neuron lesion.
Clasp-Knife Response: What Is It, Causes - Osmosis
2023年12月4日 · The clasp-knife response describes an initial resistance when attempting passive movement of the extremities, followed by a rapid decrease in resistance. It is often assessed during neurology examinations by healthcare providers and indicates upper motor neuron damage.
Muscle Spasticity vs Rigidity - Stanford Medicine 25
2016年4月5日 · When ever there is resistance to movement, think of the two most common issues: spasticity and rigidity. Both spasticity and rigidity represent hypertonic states, however both have different causes and characteristics that are important to be aware of.
Understanding Clasp Knife Spasticity: Causes & Care (2024)
2024年3月11日 · Clasp knife spasticity is a unique form of rigidity that occurs in individuals with upper motor neuron damage. It is characterized by spastic paralysis with a clasp-knife reaction. Understanding the underlying mechanisms of clasp knife spasticity is crucial for effective management and care.
Pathophysiology of Spasticity: Implications for Neurorehabilitation
In the quadriceps, spasticity is greater when the muscle is short than when it is long [2, 3]. This is probably one of the mechanisms underlying the so-called clasp knife phenomenon. Bending the knee, at first (when the muscle is short) a great resistance is met. Then, when the quadriceps lengthens, the resistance suddenly disappears.
Spasticity Mechanisms – for the Clinician - PMC - PubMed …
Clinically spasticity manifests as an increased resistance offered by muscles to passive stretching (lengthening) and is often associated with other commonly observed phenomenon like clasp-knife phenomenon, increased tendon reflexes, clonus, and flexor and extensor spasms.
Spasticity - Physiopedia
Clasp knife phenomenon: Limb initially resists movement and then suddenly gives way Stroking Effect: Stroking the surface of the antagonist muscle may reduce tone in spasticity. Permanent loss of joint range has been known to occur 3-6 weeks after both stroke and brain injury and therefore it is important that spasticity is identified early on ...
‘Seatbelt Effect’ of Spasticity: Contrasting Velocity Dependence …
During the passive stretch, a brief “free interval” is appreciated in spasticity but not in rigidity because the resting muscle is electromyographically silent in spasticity. In contrast, in rigidity, the resting muscle shows firing. Spasticity is also characterized by the “clasp knife phenomenon.”
Spasticity and Contractures - Musculoskeletal Key
2019年1月15日 · The “clasp knife phenomenon,” for example, is more prominent in spinal spasticity and describes the sudden disappearance of the velocity-dependent increase in resistance to passive stretch resulting in the affected limb moving akin to the opening of a clasp knife. 62 Other differences include more prominent clonus in spinal spasticity and ...
Spasticity vs. Rigidity - New Health Advisor
2024年12月4日 · Clasp - knife phenomenon: The limb experiencing spasticity suddenly gives way after an initial resistance to movement. Much like how a clasp-knife slightly resists before folding in.