Ruptured 'Baker's-type cyst' of the arm - a case study

Description: In rheumatoid arthritis, involvement of the tendons and bursae in the shoulder region is a common finding. Rupture of the long head of biceps tendon is classically recognized by the contraction of the belly of the biceps into a prominent lump on active flexion of the elbow, the so-called ‘pop-eye’ sign. Subacromial bursitis is usually secondary to impingement and presents with pain around the shoulder. We report a case in which rupture of the long head of biceps tendon and subacromial bursitis presented as a soft tissue mass on the anterolateral aspect of the left upper arm in a patient with rheumatoid arthritis.
Ruptured 'Baker's-type cyst' of the arm--a case study. Roddy E, Lim V, Fairbairn KJ, Pande I. Rheumatology (Oxford). 2003 May;42(5):704-5