The aim of this study is to determine the validity and reliability of the Turkish version of the Functional Shoulder Score in Turkish patients with subacromial impingement syndrome (SIS).

The original form of the Functional Shoulder Score will be translated into Turkish by two Turkish mother tongue translators who also speak English in advanced level. Then these translations will be combined into one translation and translated back to English. The pre-final version will be composed and tested on a group of patients with SIS. If necessary, readjustments will be made, and the validity of the final version will be investigated in 116 patients with SIS. Additionally, for the test-retest reliability, 59 patients will fill out the questionnaire again after 3-7 days.

Inclusion Criteria:

• Diagnosis of subacromial impingement syndrome (Michener et al, 2009)
• To read and understand Turkish

Exclusion Criteria:

• 50% limitation of passive shoulder range of motion in ≥ 2 planes of motion
• Glenohumeral instability
• Fracture or surgery history in the shoulder
• Another diagnosis that may affect shoulder function (frozen shoulder, primary shoulder arthritis, inflammatory/ neoplastic/neurological conditions, cervical spine induced pain)
• Systemic musculoskeletal disease

Patients with subacromial impingement syndrome from the outpatient clinic of the Dokuz Eylul University, Faculty of Medicine, Department of Orthopedics and Traumatology.