otherrehto

You don't need to go to a low depth to have good form and not mess up your back.

Without a special prosthesis, there are four options:

1. Squat normally to whatever depth your balance and prosthesis will safely allow.

2. Squat from sitting - literally sitting.

3. Build a cushioned support bench to go under your amputated leg and squat from kneeling on that knee at a height that allows full extension of your good leg. This is actually very easy. You just have to be careful not to roll out on your knee. That can be prevented with moulded/cut hard foam as a support.

4. One-legged squats.

If you want to use very heavy weights, you would need a special foot to handle the load, but it just takes some creativity. Do a Youtube search for BK amputee squat and you'll see some examples.