Harmony Scapulohumeral Rhythm (SHR) Reliability and Efficacy Study

Inclusion Criteria: * Limited or impaired functional use of one or both upper extremities due to stroke * Currently admitted to the Shirley Ryan AbilityLab as an inpatient * Minimum passive Range of Motion requirements as follows: * Shoulder flexion: 90⁰ minimum with zero starting point of arm perpendicular to the floor and 90⁰ measuring at a right angle parallel to the floor in the sagittal plane * Shoulder abduction: 90⁰ minimum with zero starting point of arm perpendicular to the floor and 90⁰ measuring at a right angle parallel to the floor in the coronal/frontal plane * Shoulder rotation: tolerating of don/doff position, depending on the degree of ER required for that position * Elbow flexion: 90⁰ minimum with zero starting point of arm perpendicular to the floor and 90⁰ measuring at a right angle parallel to the floor in the sagittal plane * Wrist pronation: 0⁰ minimum with the zero starting point of the forearm in neutral with the palm of the hand pointing inward and the thumb pointing up, perpendicular to the floor * Have skeletal measurements within the ranges specified: * Seated shoulder height in range of 840 mm to 1122 mm measured as the sum of the following: * Seat of chair to acromion process of seated patient * Height of the chair * Shoulder Breadth in the range of 324mm to 443mm measured between the acromion process in one scapula to the acromion process on the other scapula * Humeral length in the range of 250mm to 350mm measured between the greater tubercle to lateral epicondyle * Ulnar length in the range of 228 mm to 306 mm measured between the olecranon to head of ulna/styloid process * 21 years of age or older * Ability to safely transfer from mobility device to standard chair with no armrests or with the assistance of a licensed occupational therapist/trained research staff * Able and willing to give written consent and comply with study procedures Exclusion Criteria: * Pregnant * Pressure injury or exposed broken skin at sites of contact with device * History of mastectomy and/or axillary lymph node resection or history of active lymphedema in upper extremity * Recent sternotomy/active sternal precautions * Recent pacemaker/ICD placement with active pacemaker precautions * Inability to tolerate upright position and traditional therapy outside of the device * Spasticity \>3 on the Modified Ashworth Scale (MAS) * Medical line (e.g., IV, PICC, dialysis port) at contact points * Heterotrophic ossification * Unresolved deep vein thrombosis * Fixed joint contractures that limit movement required to use device * Inability to express pain/discomfort * Presence of a condition that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data.