... fusion 52 9, 55 4, 56 8, 57 0, 702– – allograft 450 – – biology 55 5, 57 1– – bone grafts 55 6– – instrumented 56 0– – motion preservation 56 6– – non-instrumented 55 9– – osteoconduction 55 5– – ... 75, 162, 1 75, 358 , 441, 51 5, 51 6, 52 8, 54 1, 54 5, 7 15, 733, 734–acquired 757 – acute pain 7 45 – classification 7 35 – degenerative 738, 7 45, 1043– developmental 754 , 757 – high-grade 747– history ... shape 51 5– claudication 203, 204, 51 7– column, resection 7 05 – cord, see there– decompression 53 1– deformity 27, 210, 222, 382, 419, 666, 687, 1 058 –disorder 54 5––acute 155 – – bowl and bladder...