Objectives: To determine the frequency of ultrasound (US) appearances of the extra-articular long head of the proximal biceps tendon in patients referred for US-guided biceps tendon sheath injections.
Methods: We reviewed our US-guided biceps tendon sheath injections between January 2015 and December 2017, noting the appearance of the biceps tendon and sheath, as well as the needle size used, and what was injected. Clinical electronic medical records were also reviewed to determine safety and patients' responses.
Results: A total of 300 US-guided biceps tendon sheath injections were performed for anterior shoulder pain. Preliminary US evaluations revealed that 129 of 300 (43%) patients had a normal US appearance of the biceps tendon; 110 (36.6%) had tendinosis; 13 (4.3%) had tenosynovitis; 31 (10.3%) had both tendinosis and tenosynovitis; 8 (2.7%) had a biceps tendon tear; and 9 (3%) had a history of a tenodesis. Of 81 patients who had pain relief after the injection, 41 had a normal tendon appearance on US, and 40 had an abnormal US appearance.
Conclusions: A large minority of patients with anterior shoulder pain clinically suspected to be due to the biceps tendon have a normal-appearing tendon and sheath. This should not dissuade the operator from performing the procedure.
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