Out of acquired hernias
, 64% are traumatic, and the remainder are either spontaneous or pathologic.
may be primary (50%-55%), occurring in aged individuals, situations of increased intra-abdominal pressure or excessive weight loss and secondary (25%-30%) caused by surgical procedure, blunt or open traumas.
Femoral hernias are acquired hernias
, and infrequent during the childhood.
Secondary lumbar hernias are of traumatic or post-surgical (Flank incisions) aetiology comprising about 25% of acquired hernias
. Congenital hernias have been noted to arise from inferior triangle and are often seen with other anomalies like renal agenesis, lumbocostovertebral syndrome .
Ellis, "Acquired hernias
of the diaphragm," Postgraduate Medical Journal, vol.