Amputations of the lower extremity are still a common problem in diabetic feet and peripheral vasculopathies. The presented paper introduces a new device for an easier and faster mobilization of below-the-knee amputees. It is based on a new modular prostheses with individual inflatable air bladders. The compliance rate is higher with this device and it could be used from the day of surgery until the definitive prostheses is made. A biomechanical cadaver study with the prostheses will also be presented.