The phrase ‘frozen shoulder’ is commonly loosely applied and wrongly attributed to other shoulder constraints such as a rotator cuff tear or osteoarthritis. Subacromial pathology (e.g. rotator cuff tendinopathy, subacromial bursitis and impingement syndrome) can carefully resemble frozen shoulder within the early stages likewise. My mom endured a intense stroke. https://www.theorthopaedicandpainpractice.com/pain-management-and-orthopaedic-care-what-you-need-to-know/