Determination of Risk Factors of Shoulder Pathologies in Parkinson Disease

Parkinson's disease was first described in history in 1817 by James Parkinson in his monograph "An essay on swinging palsy", and today it is the 2nd most common neurodegenerative disease after Alzheimer's, affecting approximately 6.1 million people. Its main histopathological feature is the decrease in dopaminergic secretion in the basal ganglia and there are three cardinal findings: Bradykinesia, Tremor, Rigidity. Although joint and skeletal deformities are seen in approximately 70% of Parkinson's patients, they are not adequately evaluated and cause significant functional disability and chronic pain, independent of motor symptoms.Musculoskeletal pathologies seen in Parkinson's patients can be classified as: musculoskeletal pain, articular problems, postural problems and bone mineralization defects. The shoulder girdle is a joint with complex and delicate function, consisting of four joints (glenohumeral, sternoclavicular, acromioclavicular and scapulothoracic), supporting muscles and periarticular ligaments, which seriously affects the patient's quality of daily life and function. Although magnetic resonance imaging (MRI) is the best imaging tool in the diagnosis of musculoskeletal system pathologies, it is quite sensitive to artifact-forming motion. Ultrasound (US) imaging is widely used in the evaluation of rotator cuff muscles, biceps muscle and glenohumeral joint pathologies and has many advantages over MRI, such as providing fast, cheap and dynamic imaging. Although many studies have proven that shoulder girdle musculoskeletal pathologies such as bicipital tendinitis, m.supraspinatus tendinosis, subacromial/subdeltoid bursitis, subacromial impingement syndrome, and adhesive capsulitis are seen more frequently in Parkinson's patients by ultrasonographic imaging, these shoulder girdle pathologies seen in Parkinson's patients are more common. The risk factors for pathologies have not been defined. In this study, we aimed to determine the ultrasonographic findings and risk factors of shoulder pathologies in Parkinson's patients and to investigate the effects of shoulder pathologies on quality of daily life, physical activity, falls and balance.