Spastic paraplegia 4 (SPG4; generally known as SPAST-HSP) is characterised by insidiously progressive bilateral decreased-limb gait spasticity. A lot more than fifty% of influenced individuals have some weak point in the legs and impaired vibration feeling within the ankles.?? ????? ???? ??? ???? ?? ??? ? ?? ???? ??? ? ????. ?? ????? ??? ????? ???