Table of contents

Letters

• Letter: Novel method of locating the foramen ovale: a wobbly chair with shaky legs (3 March, 2021)

  Jose Luis De Córdoba, Carlos García-Marqueta, Núria Isach
• Letter: Novel method of locating the foramen ovale: a stable chair with solid legs (5 May, 2021)

  Liangliang He, Zhonghui Guan
• Letter: Femoral artery block: the relationship between visceral and ischemic pain (3 March, 2021)

  Andre Boezaart, Cameron Smith, Yury Zasimovich, Miguel A Reina
• Letter: ‘It’s not over until it’s over’ (31 March, 2021)

  Alexander Schnabel, Peter Kranke, Christine Meyer-Frießem, Peter K Zahn, Stephanie Weibel, Esther M Pogatzki-Zahn, Lisa Oostvogels
• Letter:

  In reply to Schnabel et al.

  (31 March, 2021)

  Faraj W Abdallah, Nasir Hussain, Richard Brull
• Letter: Ultrasound-guided retrolaminar cervical block (24 May, 2021)

  Uri Hochberg, Jesus de Santiago Moraga
• Letter: Cervical erector spinae versus retrolaminar plane block as an alternative to classical interscalene block (24 May, 2021)

  Ban C H Tsui, Hesham Elsharkawy
• Letter: Intranasal lidocaine sphenopalatine block: a case of unanswered questions versus unquestioned answers (12 August, 2021)

  Oscar De Leon-Casasola, Benjamin L Matson, Felipe Juarez
• Letter: Intranasal local anesthetic application: possible mechanisms of action (12 August, 2021)

  Samer Narouze
• Letter: Toward precision regional anesthesia: is the PENG block appropriate for all hip fracture surgeries? (22 June, 2021)

  Richard Kim, Ban C H Tsui
• Letter: In reply to: ‘towards precision regional anesthesia: is the PENG block appropriate for all hip fracture surgeries?’ (22 June, 2021)

  D-Yin Lin, Craig Morrison, Brigid Brown, Alex Saies, Reshma Pawar, Marthinus Vermeulen, Stewart Robert Anderson, Tsai Sheng Lee, Job Doornberg, Hidde Kroon, Ruurd Jaarsma