Spastic paraplegia four (SPG4; also referred to as SPAST-HSP) is characterised by insidiously progressive bilateral lower-limb gait spasticity. In excess of 50% of influenced people have some weak point in the legs and impaired vibration feeling within the ankles.????? ??? ????? ???? ????.????? ???? ??? ??? ??? ???? ?????.Hypokalemic periodic paral