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 weakness while in the legs and impaired vibration perception for the ankles.안전하고 신뢰할 수 있는 정보: 검증된 정보만 제공하여 안�