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.