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[Lesions of the long head of the biceps--their pathogenesis and demonstration by imaging procedures (sonography, x-ray, arthrography and computed tomography)].

Because of unusual anatomy and function the long head of the biceps brachii (LHB) is often subject to pathologic changes. On reviewing 354 sonographies of the shoulder (7.5 MHz), it was found that 61 (= 17%) abnormal findings of the LHB were reported such as degenerative changes accompanying impingement stadium II and III (atrophy, hypertrophy, effusion), intracapsular ruptures, acute isolated tenosynovitis and bony changes of the sulcus (bony spurs, shallow and dysplastic sulcus with subluxation of the LHB). Each abnormal finding was confirmed by x-ray and arthrography (some via CT) and compared with sonographic report. There seems to be a strikingly high percentage of rotator cuff tears connected with lesions of the LHB and the reduced filling of the sheath of the LHB, if combined lesions were apparent elsewhere in the shoulder. We consider sonography to be the method of choice in the assessment of LHB injuries; in case of verified lesion of the LHB, other pathologic conditions elsewhere in the shoulder are likely.