C 4 6 5 July 8, 2019 16 32 64 128 C 4 5 6 7 C 3 4 5 6 C 3c 4 )+ c 5c 6 82 6 4 5 c A b c 4 5 6 C 1 2 3 4 5 6 C 4 5 6 vertebrae C 4 5 6 fusion C 4 5 6 7 fusion D&c 4 5 6 C 3 4 5 6 7 C =( 4 5.10 5 6 5 c 4 5 )+ 6 50 4 c 2 )= 5c 6 C 4 h 6 o 5