Spastic paraplegia 4 (SPG4; also called SPAST-HSP) is characterised by insidiously progressive bilateral decrease-limb gait spasticity. Over fifty% of impacted people today have some weakness from the legs and impaired vibration sense with the ankles.?? ????? ???? ??? ???? ?? ??? ? ?? ???? ??? ? ????. ?? ????? ??? ????? ??? ???? ?? ???? ??????!???