This abnormal reflex is typically a sign of an upper motor neuron lesion. These neurons originate in the brain's cerebral ...

Deep-tendon reflexes to be examined are at the elbow (biceps and triceps), wrist (brachioradialis), knee (quadriceps), and ankle (gastrocnemius), and the presence or absence of clonus is noted.

Spasticity is characterized by increased stretch reflexes, resistance to passive movement with a clasp-knife phenomena, ankle clonus, and increased deep tendon reflexes. [9] The major movement ...

Typically, ‘dynamic’ contracture is recognized in younger children with cerebral palsy or spasticity of recent onset. Such children are likely to exhibit hyperreflexia, clonus, co-contraction and a ...