Spastic paraplegia four (SPG4; often called SPAST-HSP) is characterized by insidiously progressive bilateral decrease-limb gait spasticity. In excess of fifty% of afflicted people today have some weak spot in the legs and impaired vibration feeling on the ankles.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.Spastic paraplegia seven (SPG7) is chara