Mono Ski
A mono ski is a seat mounted on a single ski through a spring suspension system. Outriggers are used for balance and propulsion on flat snow. Mono-skis have a mechanism for getting onto a chairlift. They are designed to be skied independently. Mono-skis are used by people with lower limb impairments with reasonable balance. People with these impairments might mono-ski: Brain Trauma, Double amputee, Post-polio, Muscular dystrophy, Cerebral palsy, Spinal cord injury, Multiple sclerosis, Spina-bifida.  It is commonly thought that you have to be below T7 level sci to be able to mono ski, there are several tetraplegics who have managed to mono ski independently. Outriggers are metal elbow crutches with the tip section of a ski pivoted on the bottom of the crutch. Some outriggers have adjustable brakes attached to the back edge of the ski to give some speed control. Outriggers are used to aid balance and/or to give support. Outriggers are used by mono-skiers, bi-skiers and standing skiers needing aid with balance.