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. 2018 Oct 22;33(45):e291. doi: 10.3346/jkms.2018.33.e291

Fig. 2. Ultrasound-guided ESPB. A tuohy needle was inserted to contact the TP (A). After confirming proper position of the needle, a 19-G epidural catheter was inserted above 2 cm via real-time US guidance (B).

Fig. 2

ESPB = erector spinae plane block, TM = trapezius muscle, RMM = rhomboid major muscle, ESM = erector spinae muscle, TP = transverse process, US = ultrasound.