Use the scenаriо tо аnswer the fоllowing question: Bаckground: A 50-year-old female presents with shoulder stiffness and pain, particularly in the morning. She has a history of diabetes and reports that the pain has been gradually worsening over the past six months. She describes the pain as dull and aching, with occasional sharp pains during certain movements. She has difficulty with daily activities such as dressing and reaching overhead. Question: What is the most likely diagnosis?