Perform this exercise with your prosthetic on.
Sit on the floor with your legs bent, feet flat on the floor and upper back against a bench.
Hold a barbell across your hips, supporting it with your hand and prosthetic at a width that is wider than your legs.
Press your feet against the floor and explosively lift your hips up until you have a straight line from knees to shoulders and your hips are level.
Lower your hips back towards the floor.
