Turkish Journal of Physical Medicine and Rehabilitation 2006 , Vol 52 , Num 2
A Rare Cause of Shoulder Impingement Syndrome: Os Acromiale
Nihal Özaras 1 ,Şafak Günaydın 2 ,Muharrem Çidem 3 ,Memduh Dursun 4
1 Bezmialem Vakıf Üniversitesi Tıp Fakültesi, Fiziksel Tıp ve Rehabilitasyon Anabilim Dalı, İstanbul, Türkiye
2 İstanbul Eğitim ve Araştırma Hastanesi, Fizik Tedavi ve Rehabilitasyon Kliniği, İstanbul
3 Bağcılar Eğitim ve Araştırma Hastanesi, Fizik Tedavi ve Rehabilitasyon Kliniği, İstanbul, Türkiye
4 İstanbul Üniversitesi İstanbul Tıp Fakültesi, Radyodiagnostik Anabilim Dalı, İstanbul

Os acromiale results from the failure of fusion of the scapular acromial secondary centers of ossification. It is usually an incidental radiological finding but, symptomatic os acromiale has been also reported. It has been associated with rotator cuff disease; impingement syndrome without rotator cuff tearing has been less commonly described. The treatment of os acromiale is controversial. Conservative treatment with rotator cuff strengthening, stretching exercises, anti-inflammatory medications and steroid injections and if it fails surgical intervention is recommended. We reported a patient with shoulder impingement syndrome secondary to an unfused os acromiale. Os acromiale should be considered in the diagnosis of impingement syndrome. 

Keywords : Os acromiale, impingement syndrome, shoulder