Ultrasound-guided transversalis fascia plane block provides analgesia for anterior iliac crest bone graft harvesting

摘要

The iliac crest is primarily innervated by the LI nerve root via the iliohypogastric and ilioinguinal nerves. We describe our preliminary experience with a transversalis fascia plane (TFP) block, which targets these nerves in the plane between the transversus abdominis (TA) aponeurosis or muscle and the deeper transversalis fascia. It can thus provide effective analgesia for anterior iliac crest bone graft (ICBG) harvesting. This technique is distinct from the transversus abdominis plane block, which does not reliably block the LI dermatome,although its use has been described in ICBG harvesting.