Single Elbow Crutch Height Extendable Lightweight Aluminum Walking Aid CrutchesSingle Elbow Crutch Height Extendable Lightweight Aluminum Walking Aid Crutches About this item: Forearm crutches are used by slipping the arm into a cuff and holding the grip. The cuff, typically made of plastic or metal, can be a half circle with a V type opening in the front allowing the forearm to slip out in case of a fall. The Elbow crutch cane is a perfect aid for those with bi lateral limb orthosis. It will give better support and stability