What does clasp knife rigidity indicate?

Clasp knife rigidity describes the phenomenon in a spastic limb where, after an initial resistance to passive movement of a joint, there is a sudden reduction in tone and the limb moves quite freely through the rest of the range of the particular movement.

What is clasp knife deformity?

Enlarged downward projecting spinous process of L5 vertebra extending up to sacral vertebrae with associated bifida defects is known as “Clasp-knife deformity”. It is often the cause of backache particularly during bending movements and called “Clasp-knife syndrome”.

Where do you see clasp knife rigidity?

inflexibility or stiffness. clasp-knife rigidity increased tension in the extensor of a joint when it is passively flexed, giving way suddenly on exertion of further pressure; seen especially in upper motor neuron disease. Called also clasp-knife reflex.

What is the other name of clasp knife reflex?

Called also paradoxical pupillary reflex.

What is cogwheel phenomenon?

Cogwheel phenomenon, also known as cogwheel rigidity or cogwheeling, is a type of rigidity seen in people with Parkinson’s disease. It’s often an early symptom of Parkinson’s, and it can be used to make a diagnosis.

Does Parkinson’s have clasp-knife rigidity?

With upper motor neuron lesions the muscles, after an initial period of rigidity and resistance to movement, suddenly relax or give way, the so-called “clasp-knife” rigidity. Additionally, patients with Parkinson’s disease may show a cogwheel type of rigidity.

What diseases do you see clasp knife upper motor neuron rigidity and spasticity?

What is akinesia?

Akinesia is a symptom that encompasses a variety of motor deficits, which can include slow voluntary movements, fatigability with repetitive movements, freezing, and other movement problems.

What is pill rolling?

Finger Twitching The “pill rolling” tremor that is often described in medical texts refers to the tremors of the fingers, usually the thumb plus the other fingers, that makes it look as if the person is rolling a pill in the fingers. This is most often the part of the body where tremors will begin.