What is the most likely cause of postoperative ulnar pain, numbness, and tingling in a hernia repair patient?

The most likely cause of postoperative ulnar pain, numbness, and tingling in a hernia repair patient is associated with the use of arm pads during surgery. Arm pads are essential for providing cushioning and support to the arms while the patient is positioned on the operating table. Proper padding helps to protect the ulnar nerve, which runs along the inner side of the elbow and can be susceptible to compression during surgery, especially when the arm is positioned incorrectly or left unsupported for prolonged periods.

When arm pads are utilized effectively, they can help prevent nerve injury that might lead to symptoms such as pain, numbness, and tingling along the ulnar nerve distribution. If the arm is not properly supported or padded, there is an increased risk of nerve entrapment or compression, contributing to the neurological symptoms described.

In the context of the other options, forgetting to adduct the arm or placing arm pads may also seem relevant, but these actions do not directly address nerve protection as effectively as utilizing proper arm padding. Placing an axillary roll is typically used to relieve pressure in specific surgical positions, while abducting the arm can potentially lead to increased risk of ulnar nerve compression. Thus, ensuring that appropriate, padded support is in