The movement deal has been addressed by filling the length gap among legs through the prosthesis itself. This allows disabled people to get help from ISS walls by touching them as astronauts are used to do.

Because the lack of an arm is not always considered a deficiency in space, this prosthetic proposal can be compressed and locked thanks to a pin settled below the leg cage and on the top side of the final ball. Both the closure and the unlocking will be easily ensured by pushing the two halves one into the other and letting one of them turn ninety degrees.

Meanwhile, the standing still issue comes from the fact that astronauts are used to hooking their feet under the blue handlebars that are settled all around the ISS. To exploit the still existing equipment, the problem has been addressed by adding a softball at the end of the prosthesis.

On the bottom of the ball, it has been then added a particular material that replicates the gecko's feet which will allow astronauts to attach and detach themselves without difficulties or carrying in any sudden movements.
So, when the ball lands on the hand drill it deforms following the underneath surface and leading to the attachment of the entire sticky part.