1. Ultrasound-guided lumbar plexus block in volunteers; a randomized controlled trial 
J.M.C. Strid, A.R. Sauter, K Ullensvang, M.N. Andersen, M Daugaard, M.A.F. Bendtsen, K Søballe, E.M. Pedersen, J Børglum, T.F. Bendtsen 
British Journal of Anaesthesia 
Volume 118, Issue 3, Pages (March 2017)
DOI: /bja/aew464
Copyright © 2017 The Author(s) Terms and Conditions

2. Fig 1
Modified CONSORT 2010 flow diagram of the study subjects. LUT, lumbar ultrasound trident.
British Journal of Anaesthesia  , DOI: ( /bja/aew464)
Copyright © 2017 The Author(s) Terms and Conditions

3. Fig 2
Spread of injectate (lidocaine–adrenaline with added contrast agent) in one subject seen on a T1-weighted mDixon all in-phase sequence with fat suppression. The injectate (green arrow) is visible as the bright area between the anterolateral large layer and the posteromedial small layer of the major psoas muscle (PMM), surrounding the lumbar plexus (grey-black structures within the local anaesthetic) including the femoral nerve root from spinal nerve L3 (magenta arrow). (A) Axial plane. (B) Frontal plane: The green lines indicate the level of the axial plane. L1–S1, vertebral bodies of L1–S1.
British Journal of Anaesthesia  , DOI: ( /bja/aew464)
Copyright © 2017 The Author(s) Terms and Conditions

4. Fig 3
Plasma concentration of lidocaine 0–90 min after injection with the shamrock vs the lumbar ultrasound trident (LUT) technique. Values are presented as mean (sd).
British Journal of Anaesthesia  , DOI: ( /bja/aew464)
Copyright © 2017 The Author(s) Terms and Conditions