Spastic paraplegia four (SPG4; often known as SPAST-HSP) is characterized by insidiously progressive bilateral reduced-limb gait spasticity. More than fifty% of affected men and women have some weak spot inside the legs and impaired vibration feeling within the ankles.????? ??? ????? ???? ????.????? ???? ??? ??? ??? ???? ?????.Spastic paraplegia 7