One armed tie tying and collar buttoning is tough for most people, let alone an individual who has suffered an amputation. Here's a lesson from an amputee on tying a tie and other suit tricks all while using one hand and no prosthetics. A thicker tie is easier as it will not bunch up or tighten. Only tie a Half Windsor as a Full Windsor is way too tricky for one hand. This is a step by step tying video by an amputee with only one arm. If it cinches up too much wiggle it out and it will loosen nicely. Use a mirror to tie the tie at the proper length.