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© The Board of Management and Trustees of the British Journal of Anaesthesia [2007]. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Psoas compartment block
Consultant Anaesthetist
Department of Anaesthesia
South Infirmary-Victoria University Hospital
Old Blackrock Rd
Cork
Ireland
Tel: +353 021 49 26 100 Fax: +353 021 43 10 153 E-mail: mannionstephen@hotmail.com
Key Words: Psoas compartment block consistently blocks the femoral, lateral femoral cutaneous, and obturator nerves (the true 3-in-1 block). It provides excellent postoperative analgesia after major hip and knee surgery. Combined with a sciatic nerve block, it provides unilateral lower limb anaesthesia below the hip. Sedation is required for patient comfort. The block must be monitored and evaluated as for neuraxial block in order to avoid serious complications.
| The first 150 words of the full text of this article appear below. |
Psoas compartment block (PCB) is a peripheral regional anaesthetic technique that blocks the main components of the lumbar plexus, namely the femoral, lateral femoral cutaneous (LFC), and obturator nerves as they run within the psoas major muscle. The psoas compartment block is also known as the posterior lumbar plexus block.
A posterior approach to the lumbar plexus was first described by Winnie and colleagues.1 They described an approach for lumbosacral block but provided no data on the extent of neural block. The term psoas compartment block was coined by Chayen and colleagues2 to describe a loss of resistance technique with injection of solution into the compartment between the quadratus lumborum and psoas major muscles. There have been a number of other approaches described since, including an approach by Capdevila and colleagues3 based on modifications to Winnie's landmarks using computed tomography.
| Clinical anatomy |
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The lumbar plexus is formed by the first to the
| Imaging |
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Ultrasound
Magnetic resonance imaging
Computed tomography
| Technique |
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Single shot
Continuous psoas compartment block
| Clinical indications |
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| Evidence-based current practice |
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Anaesthesia
Analgesia
| Controversies |
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| Conclusions |
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