Demonstration of a radial shaft fracture repaired through a dorsal (Thompson) approach to the forearm. The patient is an 18-year-old male who sustained a left elbow dislocation and ipsilateral radial shaft fracture (AO/OTA: 22-B2) while playing basketball. He underwent a closed reduction of the elbow and operative repair of the radius. Anatomic reduction and fixation was obtained. A dorsal approach to a radial shaft fracture is advantageous for fractures involving the proximal 1/3 of the radius and with dorsal soft tissue damage, which requires debridement. This case also demonstrates the technique to protect the PIN.