How To Apply a Sugar Tong Arm Splint By Miranda Lewis, MD, University of Washington Reviewed / Revised Jul 2021 | Modified Sep 2022 View Patient Education Indications Contraindications Complications Equipment Positioning Step-by-Step Description of Procedure Aftercare Warnings and Common Errors Tips and Tricks Topic Resources Sugar Tong Splint A sugar tong arm splint is a device applied to immobilize the wrist and arm to prevent supination and pronation of the wrist and forearm.