Apraxia-specific Occupational Therapy in Patients With Multiple Sclerosis

Background

Limb apraxia is defined as the inability to correctly perform skilled and/or learned limb movements, which cannot be explained by elementary motor and sensory deficits or cognitive problems. It impairs real object/tool use as well as pantomime and imitation of gestures affecting both sides of the body and can be a major source of disability independent of other neurological deficits. It significantly affects activities of daily living (ADL) and is associated with poorer outcome for independent living or return to work.

Apraxia is largely based on left parieto-frontal damage due to focal injury or more widespread neurodegeneration of cortical areas and/or their connections. However, apraxia has been described in damage of the right hemisphere, although less frequent and severe.

Apraxia is increasingly recognized as a clinical problem in restorative neurology and various approaches were described how to treat the disorder.

Multiple Sclerosis (MS) is a chronic inflammatory disease of the central nervous system and the leading cause of disability in young adults. It is characterized by focal demyelination as well as axonal damage. MS has been classically thought of as a typical white matter disorder. However, early pathology studies and recent magnetic resonance tomography (MRI) studies show demyelination in the cortex and deep gray matter nuclei. Grey matter damage starts early in the disease and substantially affects cognitive functioning.