inferior lumbar triangle

inferior lumbar triangle

[TA]
area of the back (posterior abdominal wall) bounded by edges of the latissimus dorsi and external oblique muscles and iliac crest; herniations occasionally occur here.

in·fe·ri·or lum·bar tri·an·gle

(in-fēr'ē-ŏr lŭm'bahr trī'ang-gĕl) [TA]
Area of the back (posterior abdominal wall) bounded by edges of the latissimus dorsi and external oblique muscles and iliac crest; herniations occasionally occur here.
Synonym(s): Petit lumbar triangle.
References in periodicals archive ?
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.
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.
For example, an Amyand's hernia is an inguinal hernia containing the appendix (Figure 2), a De Garengeot hernia is a femoral hernia containing the appendix, a hernia of Littre contains a Meckel's diverticulum, (5) a Grynflett-Lesshaft hernia occurs through the superior lumbar triangle, while a Petit hernia is a hernia in the inferior lumbar triangle (Table 1).

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