Age \> 18 years

Able to understand and execute the test instructions

Able to sit on a chair with low back support for 10 minutes

Diagnosed with MS (Multiple Sclerosis) using McDonald criteria

Able to move at least 1 out of 3 joints (wrist, elbow or shoulder): Medical Research Council score 3.

First- ever single, unilateral (ischemic or hemorrhagic) stroke

No apraxia or hemi spatial neglect

Able to move at least 1 out of 3 joints of the affected upper limb (wrist, elbow or shoulder): Medical Research Council score 3.

A Comprehensive Assessment of Trunk, Scapula and Upper Limb in Neurological Patients. Reliability, Validity and Interrelatedness