“…Even if the literature in ARSACS is scarce, several papers report impaired walking [ 1 – 3 , 19 , 20 , 23 , 27 , 28 , 36 , 56 , 57 , 59 , 60 , 66 , 72 , 79 – 81 , 83 , 87 , 91 , 102 , 103 , 106 , 107 , 116 , 117 , 135 , 140 , 143 ], progressive loss of mobility [ 4 , 12 , 14 , 15 , 28 , 40 , 46 , 48 , 49 , 52 , 56 , 72 , 76 , 102 , 103 , 113 , 116 , 117 , 119 , 120 , 123 , 128 , 131 ] and the need to use a walking aid early on and progressively move on to a wheelchair [ 4 , 5 , 7 , 19 , 20 , 46 , 48 , 49 , 51 , 60 , 63 , 64 , 66 , 74 , 76 , 77 , ...…”