parkinson disease
Stiff person syndrome (SPS) is an extremely rare progressive neurological disorder characterized by persistent rigidity and spasms of certain voluntary muscles, especially those of legs and feet.
A disease of adults, characterized by a diffuse rigidity and hardness of the skin.
It is a medical condition characterized by a trance or seizure with a loss of sensation and consciousness accompanied by rigidity of the body.
Basically, patients might have hypertonia (rigidity), tremor at rest and bradykinesia (slow movements)
There are actually six types of seizures. 1. Grand Mal - Unconsciousness, convulsions, muscle rigidity 2. Absence - Brief loss of consciousness 3. Myoclonic - Sporadic jerking movements 4. Clonic - Repetitive jerking movements 5. Tonic - Muscle stiffness and rigidity 6. Atonic - Loss of muscle tone
The least common of the three major types, silent thyroiditis is characterized by rigidity and slight enlargement of the thyroid gland.
rigidity of the body,akinesia-inability to walk freely & tremors characterize the triad of Parkinsonism
Studies show the procedure generally improves tremor, rigidity, and slowed movements by 25-60%.
parkinson's is marked by hypokinetic symptoms, that lead to muscle rigidity and difficulty initiating movements.
The torsional rigidity comes from the torso. The lateral rigidity would come from the arms and the legs becoming stiff.
Studies show the surgery generally improves tremor, rigidity, and slowed movements by 25-60%. Dyskinesias typically improve by 75% or more.
It is defined as ratio of the product of modulus of rigidity and polar moment of inertia to the length of the shaft. Torsional Rigidity is caluclated as: Torsional Rigidity= C J/l