To access 4,300 diagnoses written by the world's leading experts in radiology, please log in or subscribe.Log inSubscribe
KEY FACTS
Terminology
Preprocedure
Procedure
Post Procedure
Outcomes
TERMINOLOGY
Abbreviations
Ilioinguinal nerve (II-N)
Iliohypogastric nerve (IH-N)
External oblique muscle (EOM)
Internal oblique muscle (IOM)
Transversus abdominis muscle (TAM)
Transversus abdominis plane (TAP)
Anterior superior iliac spine (ASIS)
Iliac crest (IC)
Synonyms
Ilioinguinal-Iliohypogastric nerve block
Definitions
IH-N and II-N arise from anterior division of ventral rami of T12-L1 and L1, respectively
Pierce psoas muscle medially and emerge from its lateral border
They travel anterior to quadratus lumborum (QL) muscle, deep to transversalis fascia, then in deep aspect of TAM
IH-N is larger and located cephalad to II-N as they course abdominal wall
Both nerves pierce TAM posterior to anterior IC (ASIS) to enter TAP
TAP is fascial plane between TAM and IOM
TAP blocks can block these nerves
Ascending branch of deep circumflex iliac artery travels in this plane and is used as landmark for plane
II-N and IH-N provide sensory innervation to skin of lower abdominal wall, upper hip, and upper thigh
Note: Fascial plane between TAM and transversalis fascia is in continuity with space around femoral nerve (FN)
PREPROCEDURE
Indications
Contraindications
Getting Started
PROCEDURE
Patient Position/Location
Equipment Preparation
Procedure Steps
Findings and Reporting
Alternative Procedures/Therapies
POST PROCEDURE
Expected Outcome
Things to Do
Things to Avoid
OUTCOMES
Problems
Complications
Selected References
Bhatia N et al: Postoperative analgesic efficacy of ultrasound-guided ilioinguinal-iliohypogastric nerve block compared with medial transverse abdominis plane block in inguinal hernia repair: a prospective, randomised trial. Anaesth Crit Care Pain Med. 38(1):41-5, 2019
Lee KS et al: Ultrasound-guided microwave ablation for the management of inguinal neuralgia: a preliminary study with 1-year follow-up. J Vasc Interv Radiol. 30(2):242-8, 2019
Choudhary J et al: Transversalis fascia plane block for the treatment of chronic postherniorrhaphy inguinal pain: a case report. A A Pract. 11(3):57-9, 2018
Kale A et al: Selective spinal nerve block in ilioinguinal, iliohypogastric and genitofemoral neuralgia. Turk Neurosurg. 29(4):530-237, 2018
Chin KJ et al: Essentials of our current understanding: abdominal wall blocks. Reg Anesth Pain Med. 42(2):133-83, 2017
Abrahams M et al: Update on ultrasound for truncal blocks: a review of the evidence. Reg Anesth Pain Med. 41(2):275-88, 2016
Wadhwa V et al: CT-guided perineural injections for chronic pelvic pain. Radiographics. 36(5):1408-25, 2016
Tagliafico A et al: Anatomical study of the iliohypogastric, ilioinguinal, and genitofemoral nerves using high-resolution ultrasound. Muscle Nerve. 51(1):42-8, 2015
Klaassen Z et al: Anatomy of the ilioinguinal and iliohypogastric nerves with observations of their spinal nerve contributions. Clin Anat. 24(4):454-61, 2011
Ndiaye A et al: Emergence and distribution of the ilioinguinal nerve in the inguinal region: applications to the ilioinguinal anaesthetic block (about 100 dissections). Surg Radiol Anat. 32(1):55-62, 2010
Eichenberger U et al: Ultrasound-guided blocks of the ilioinguinal and iliohypogastric nerve: accuracy of a selective new technique confirmed by anatomical dissection. Br J Anaesth. 97(2):238-43, 2006
Bell EA et al: Iliohypogastric-ilioinguinal peripheral nerve block for post-cesarean delivery analgesia decreases morphine use but not opioid-related side effects. Can J Anaesth. 49(7):694-700, 2002
Vaisman J: Pelvic hematoma after an ilioinguinal nerve block for orchialgia. Anesth Analg. 92(4):1048-9, 2001
Jöhr M et al: Colonic puncture during ilioinguinal nerve block in a child. Anesth Analg. 88(5):1051-2, 1999
Reed RA et al: Effect of chain unsaturation on the structure and thermotropic properties of galactocerebrosides. Biophys J. 55(2):281-92, 1989
Related Anatomy
Loading...
Related Differential Diagnoses
Loading...
References
Tables
Tables
KEY FACTS
Terminology
Preprocedure
Procedure
Post Procedure
Outcomes
TERMINOLOGY
Abbreviations
Ilioinguinal nerve (II-N)
Iliohypogastric nerve (IH-N)
External oblique muscle (EOM)
Internal oblique muscle (IOM)
Transversus abdominis muscle (TAM)
Transversus abdominis plane (TAP)
Anterior superior iliac spine (ASIS)
Iliac crest (IC)
Synonyms
Ilioinguinal-Iliohypogastric nerve block
Definitions
IH-N and II-N arise from anterior division of ventral rami of T12-L1 and L1, respectively
Pierce psoas muscle medially and emerge from its lateral border
They travel anterior to quadratus lumborum (QL) muscle, deep to transversalis fascia, then in deep aspect of TAM
IH-N is larger and located cephalad to II-N as they course abdominal wall
Both nerves pierce TAM posterior to anterior IC (ASIS) to enter TAP
TAP is fascial plane between TAM and IOM
TAP blocks can block these nerves
Ascending branch of deep circumflex iliac artery travels in this plane and is used as landmark for plane
II-N and IH-N provide sensory innervation to skin of lower abdominal wall, upper hip, and upper thigh
Note: Fascial plane between TAM and transversalis fascia is in continuity with space around femoral nerve (FN)
PREPROCEDURE
Indications
Contraindications
Getting Started
PROCEDURE
Patient Position/Location
Equipment Preparation
Procedure Steps
Findings and Reporting
Alternative Procedures/Therapies
POST PROCEDURE
Expected Outcome
Things to Do
Things to Avoid
OUTCOMES
Problems
Complications
Selected References
Bhatia N et al: Postoperative analgesic efficacy of ultrasound-guided ilioinguinal-iliohypogastric nerve block compared with medial transverse abdominis plane block in inguinal hernia repair: a prospective, randomised trial. Anaesth Crit Care Pain Med. 38(1):41-5, 2019
Lee KS et al: Ultrasound-guided microwave ablation for the management of inguinal neuralgia: a preliminary study with 1-year follow-up. J Vasc Interv Radiol. 30(2):242-8, 2019
Choudhary J et al: Transversalis fascia plane block for the treatment of chronic postherniorrhaphy inguinal pain: a case report. A A Pract. 11(3):57-9, 2018
Kale A et al: Selective spinal nerve block in ilioinguinal, iliohypogastric and genitofemoral neuralgia. Turk Neurosurg. 29(4):530-237, 2018
Chin KJ et al: Essentials of our current understanding: abdominal wall blocks. Reg Anesth Pain Med. 42(2):133-83, 2017
Abrahams M et al: Update on ultrasound for truncal blocks: a review of the evidence. Reg Anesth Pain Med. 41(2):275-88, 2016
Wadhwa V et al: CT-guided perineural injections for chronic pelvic pain. Radiographics. 36(5):1408-25, 2016
Tagliafico A et al: Anatomical study of the iliohypogastric, ilioinguinal, and genitofemoral nerves using high-resolution ultrasound. Muscle Nerve. 51(1):42-8, 2015
Klaassen Z et al: Anatomy of the ilioinguinal and iliohypogastric nerves with observations of their spinal nerve contributions. Clin Anat. 24(4):454-61, 2011
Ndiaye A et al: Emergence and distribution of the ilioinguinal nerve in the inguinal region: applications to the ilioinguinal anaesthetic block (about 100 dissections). Surg Radiol Anat. 32(1):55-62, 2010
Eichenberger U et al: Ultrasound-guided blocks of the ilioinguinal and iliohypogastric nerve: accuracy of a selective new technique confirmed by anatomical dissection. Br J Anaesth. 97(2):238-43, 2006
Bell EA et al: Iliohypogastric-ilioinguinal peripheral nerve block for post-cesarean delivery analgesia decreases morphine use but not opioid-related side effects. Can J Anaesth. 49(7):694-700, 2002
Vaisman J: Pelvic hematoma after an ilioinguinal nerve block for orchialgia. Anesth Analg. 92(4):1048-9, 2001
Jöhr M et al: Colonic puncture during ilioinguinal nerve block in a child. Anesth Analg. 88(5):1051-2, 1999
Reed RA et al: Effect of chain unsaturation on the structure and thermotropic properties of galactocerebrosides. Biophys J. 55(2):281-92, 1989
STATdx includes over 200,000 searchable images, including x-ray, CT, MR and ultrasound images. To access all images, please log in or subscribe.