Shoulder weakness and pain are common after neck dissection surgery for head and neck cancer. This is often caused by injury to the spinal accessory nerve, which controls important shoulder muscles. Recovery can be slow and incomplete, affecting patients' ability to return to daily activities. This project will test whether a brief, low-dose electrical stimulation treatment can help the nerve heal faster and improve shoulder function. The treatment is applied during surgery and is safe, non-invasive, and quick to deliver. If successful, this approach could lead to better rehabilitation, less disability, and improved quality of life for patients undergoing cancer surgery. The project also supports the development of new medical technology and offers a pathway to expand the use of electrical stimulation in other nerve injuries.

Inclusion Criteria:

• Undergoing neck dissection

Exclusion Criteria:

• Previous neck dissection, previous implantable stimulator (i.e. pacemaker), previous spinal accessory nerve injury, pre-existing shoulder injury or weakness

Demographics Patient outcomes (CMS scores, electromyography and patient reported outcomes)