This patient has a parkinsonian gait with small steps, decreased arm swing and “en-bloc” turning. Note the resting tremor, especially prominent in the right arm.
About Parkinsonian gait
Parkinsonian gait is a slow, shuffling gait with short steps and decreased arm swing. Patients with parkinsonian gait take many small steps to turn, known as “en-bloc” turning. They usually have difficulty starting and stopping. The characteristic gait with short accelerating steps is known as “festination.”
Localization
Parkinsonian gait results from basal ganglia dysfunction. This can be due to either reduced dopaminergic output of the substantia nigra, such as occurs in idiopathic Parkinson’s disease, or blockade of the postsynaptic dopamine receptors in the basal ganglia, such as occurs in drug-induced parkinsonism.