Fencing is a paralympic sport, open to disabled persons since 1960 and practiced in wheelchair. There is a variant, which is not a paralympic discipline: fencing for the visually impaired
In this static variant of fencing, the two athletes are seated face to face in a wheelchair that is fixed on the ground. The distance between them is determined by the person with the shortest arm. The chairs are attached at a 110° angle to the central dividing line. The competitors hold their weapon (foil, sword or saber) in one hand and cling to their chairs in the other. During the meeting, they must remain seated and cannot use their legs. Chairs should not be lifted. Athletes have standard fencing equipment plus extra leg protection. Those who lack grip on their weapon can fix it with a tape or similar device.
Source Wikipedia