Robot Aided Rehabilitation - Multi-joint Evaluations

Sensory and motor impairments following stroke can lead to substantial disability involving the arm and hand. The investigator hypothesized that excessive local and cross-coupled stiffness, diminished individuation and proprioceptive acuity will be present among multiple degree of freedom in the upper limb. The stiffness and spasticity will increase with time post-stroke. The objective of this study is to quantify the progression throughout the arm and hand during recovery from stroke. The investigator will measure the clinical assessment scores, and neuromechanical properties including range of motion, active and passive cross coupling, and spasticity by the IntelliArm robot.

Inclusion Criteria: 1. First focal unilateral lesion, ischemic or hemorrhagic 2. Had a stroke less than a month prior to enrollment 3. Rated between stages 1-4 on the Chedoke McMaster Stroke Assessment Impairment Inventory: Stage of Recovery of the Arm 4. Rated between stages 1-4 on the Chedoke McMaster Stroke Assessment Impairment Inventory: Stage of Recovery of the Hand Exclusion Criteria: 1. Apraxia 2. Other unrelated or musculoskeletal injuries 3. Unable to sit in a chair for 3 consecutive hours 4. Score of less than 22 on the Mini Mental Status Exam 5. Poor fit into equipment used in study which compromises proper use. This will be determined by the judgment of study staff