Ultrasonographic Evaluation of the Shoulder Joint in Patients With Axial Spondyloarthritis

Axial spondyloarthritis (axial SpA) is a chronic inflammatory rheumatic disease that causes inflammation of the spine and sacroiliac joints. The condition usually begins at a young age (between 20 and 40 years). Common complaints include back pain, morning stiffness, and gradual restriction of spinal movement. Complaints of peripheral joint involvement may also be observed.

Shoulder involvement in patients with axial spondyloarthritis (axial SpA) represents a manifestation of the disease that can affect peripheral joints. Shoulder involvement typically develops as a result of an inflammatory process and is manifested by symptoms such as pain, swelling, and limitation of movement. The glenohumeral joint, acromioclavicular joint, subacromial bursa, and rotator cuff tendons are most commonly affected. Such peripheral joint involvement may indicate a more severe progression of axial SpA and an increased future disease burden.

Ultrasound is an inexpensive, non-invasive, and radiation-free imaging modality that is widely used in the assessment of the musculoskeletal system. In inflammatory rheumatic diseases such as axial SpA, ultrasound is a highly effective method for the early detection of inflammation. Inflammatory findings such as synovitis, tenosynovitis, enthesitis, and bursitis can be identified by ultrasound in the early stages of the disease. Early detection of these findings can slow disease progression and prevent joint damage by facilitating timely initiation of treatment.

The objective of this observational study is to evaluate the shoulder joint using ultrasound in patients with axial spondyloarthritis and to compare the findings with healthy controls.

The case group will consist of patients aged 18 to 65 who have been diagnosed with axial spondyloarthritis by a specialist in physical medicine and rehabilitation and who are being followed up at the PMR Outpatient Clinics of the Department of Physical Medicine and Rehabilitation, University of Health Sciences Gaziosmanpaşa Training and Research Hospital.