What nerve is most often damaged during a bone harvest from the anterior superior iliac crest?

The iliohypogastric nerve is often at risk during a bone harvest from the anterior superior iliac crest due to its anatomical proximity to the area where the procedure is performed. This nerve arises from the lumbar plexus and runs laterally around the iliac crest, providing sensory innervation to the skin over the lower abdomen and the upper lateral thigh.

During a bone grafting procedure, the surgeon typically accesses the iliac crest, where the iliohypogastric nerve may be located close to the surgical site. If the nerve is inadvertently transected or compressed during the harvest, it can lead to postoperative complications such as altered sensation or pain in the innervated areas.

In contrast, while the other nerves listed also have important functions and locations, they are not typically as closely associated with the anterior superior iliac crest and hence are less likely to be damaged during this specific surgical intervention. Understanding the anatomy and pathway of the iliohypogastric nerve in relation to the iliac crest is crucial for minimizing potential nerve injury during surgical procedures in that region.