Iliohypogastric Nerve Injury (T12-L1)

Iliohypogastric nerve injury (T12-L1) affects a nerve that provides sensation to the lower abdomen and upper hip area. This nerve is part of the peripheral nervous system and helps control feeling and some muscle movements in the lower belly region. When this nerve is damaged, people may experience pain, numbness, or a burning sensation in the lower abdomen or groin. The injury often occurs after surgeries like appendectomy or cesarean section, or due to trauma. This condition can impact daily activities by causing discomfort and altered sensation in the affected area.

Iliohypogastric nerve injury (T12-L1) is a peripheral neuropathy resulting from trauma, surgical injury, or entrapment of the iliohypogastric nerve, which arises from the anterior rami of spinal nerves T12 and L1. The nerve provides sensory innervation to the skin of the lower abdomen and upper lateral thigh and motor innervation to the internal oblique and transversus abdominis muscles. Injury typically occurs during lower abdominal or pelvic surgeries, such as appendectomy, hernia repair, or cesarean section, due to nerve transection, stretching, or compression. Clinically, it manifests as localized pain, paresthesia, and sometimes weakness in the lower abdominal wall. This injury is significant because it can cause chronic neuropathic pain and impair abdominal wall function, complicating postoperative recovery.