The inferior lumbar triangle of Petit
is bounded anteriorly by the posterior border of external oblique muscle, posteriorly by the anterior border of latissimus dorsi muscle, base is formed by iliac crest, floor by the internal oblique muscle with contribution from transversus abdominis muscle and roof by skin and subcutaneous tissue.
She presented a video of her technique, which relies on identification of the lumbar triangle of Petit
to deliver a large volume of anesthetic into the transversus abdominis plane --the neurovascular space between the internal oblique and transversus abdominis muscles.
1112 Differential diagnosis includes lumbar hernias that can occur through the inferior lumbar triangle of Petit
or the superior triangle of Grynfeelt and other conditions such as diabetic truncal neuropathy syringomyelia polyradiculoneuropathy Lyme disease and prolapsed L1-L2 intervertebral disc.
TAP block can be performed through the lumbar triangle of Petit formed by external oblique muscle anteriorly, latissimus dorsi muscle posteriorly, iliac crest inferiorly and is usually identified as a defect 1 cm above the iliac crest in the midaxillary line.
A 90 mm 22 G bevelled spinal needle (Quincke) was inserted perpendicular to skin, just superior to iliac crest (2-3 cm) within lumbar triangle of Petit and slightly behind the midaxillary line.
Three approaches for the TAP block described are the subcostal, midaxillary and lumbar triangle of Petit
This blind technique requires identification of a fixed and palpable land mark, the lumbar triangle of petit which is bounded anteriorly by external oblique, posteriorly by latissimus dorsi, inferiorly by iliac crest and superiorly by sub-coastal margin (Figure-1).
TAP block was performed in Group A patients after identification of the lumbar triangle of petit.
Transversus Abdominis Plane Block (TAPB) can be performed through the lumbar triangle of Petit
formed by external oblique muscle anteriorly, lattissimus dorsi muscle posteriorly, iliac crest inferiorly and is usually identified as a defect 1 cm above the iliac crest in midaxillary line.
The lumbar triangle of Petit offers an easily identifiable, fixed and palpable landmark, and is located dorsal to the mid-axillary line .
In all the patients included in the study the lumbar triangle of petit was easily felt and the transversus abdominis plane was easily located.