Review Question - QID 211765

A 24-year-old male computer programmer injures his wrist two years ago while LARPing. At the time he was diagnosed with a scaphoid fracture but he was finishing school and did not seek treatment. He presents to your office two years later. Figure A is the patient's X-Ray from your clinic. Advanced imaging confirms the cystic nature of the fracture site. To aid in fracture healing, you elect to harvest a vascularized graft and an intraoperative photo is seen in Figure B. What is the pedicle most often supplying this graft?