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Fig. 2 | BMC Anesthesiology

Fig. 2

From: A randomized controlled trial evaluating the impact of selective axillary nerve block after arthroscopic subacromial decompression

Fig. 2

a Surface anatomy and transducer position of selective axillary nerve block. The acromion (AC) and the scapular spine (SS) are marked. b Ultrasonographic image of the shoulder region with the transducer positioned as in Fig. 1. a Important landmarks are the deltoid muscle (DM), the humeral bone (HB), the teres minor muscle (TMM) in transverse section and the triceps muscle (TM) in longitudinal section. The axillary nerve (arrow) is cranial to the posterior circumflex humeral artery (*) in the neurovascular space (dotted triangle)

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