Inferior lumbar triangle hernia as a rarely reported cause of low back pain: a report of 4 cases.

OBJECTIVE Lumbar triangle hernias are rarely reported causes of low back pain. We describe the symptoms, signs, and anatomical location of 2 possible defects in the posterior abdominal wall where lumbar hernias may appear. The clinical diagnosis was challenging, and advanced imaging failed to initially uncover the conditions. CLINICAL FEATURES We report 4 patients with spontaneous inferior lumbar triangle hernias (Petit triangle hernias) initially presenting to a primary care clinic with the primary complaint of low back pain. INTERVENTION AND OUTCOMES Thorough histories and examinations led to successful outcomes. All 4 patients were operated on to correct the defect. No recurrence has occurred. CONCLUSIONS Anatomical knowledge and clinical acumen led to correct diagnosis of these rare lumbar hernias. This information should help both medical and chiropractic clinicians detect these conditions, and aid in appropriate management.