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Tables
Treatment Group Number of Patients (% of Total) Nonoperative treatment Total 122 Successful 117 (70.5%) Failed 5 (3.0%) Operative treatment Total 44 Single-level fusion 4 (2.4%) Multilevel fusion 28 (16.9%) Corpectomy 12 (7.2%) Variable Nonoperative (n = 117) Single Fusion (n = 4) Multilevel Fusion (n = 28) Corpectomy (n = 12) Delayed Surgery (n = 5) P Value Age, y, mean (SD) 57.2 (20) 47 (10.4) 44 (18.4) 46.5 (15.6) 48.6 (6.9) 0.010 Sex Men 57 (48.7%) 2 (50%) 19 (67.9%) 8 (66.7%) 1 (20%) 0.170 Women 60 (51.3%) 2 (50%) 9 (32.1%) 4 (33.3%) 4 (80%) Body mass index, mean (SD) 26.6 (6.9) 28.5 (3.1) 27.5 (4.9) 26.4 (3.6) 27 (6.1) 0.947 Level T11 6 (5.1%) 0 (0%) 3 (10.7%) 0 (0%) 1 (20%) 0.150 T12 24 (20.5%) 2 (50%) 8 (28.6%) 3 (25%) 3 (60%) L1 66 (56.4%) 0 (0%) 10 (35.7%) 6 (50%) 1 (20%) L2 21 (17.9%) 2 (50%) 7 (25%) 3 (25%) 0 (0%) Smoker Never 75 (64.1%) 3 (75%) 17 (60.7%) 7 (58.3%) 4 (80%) 0.978 Former 14 (12%) 0 (0%) 2 (7.1%) 2 (16.7%) 0 (0%) Current 28 (23.9%) 1 (25%) 9 (32.1%) 3 (25%) 1 (20%) Placement Home 73 (62.4%) 3 (75%) 20 (71.4%) 9 (75%) 3 (60%) 0.834 Rehabilitation 44 (37.6%) 1 (25%) 8 (28.6%) 3 (25%) 2 (40%) Neurologic deficit Intact 117 (100%) 4 (100%) 26 (92.9%) 9 (75%) 5 (100%) 0.001 Deficit 0 (0%) 0 (0%) 2 (7.1%) 3 (25%) 0 (0%) Osteopenia/osteoporosis None 73 (62.4%) 4 (100%) 22 (78.6%) 9 (75%) 5 (100%) 0.729 Osteopenia 19 (16.2%) 0 (0%) 2 (7.1%) 1 (8.3%) 0 (0%) Osteoporosis 25 (21.4%) 0 (0%) 4 (14.3%) 2 (16.7%) 0 (0%) Corticosteroid use No 108 (92.3%) 4 (100%) 26 (92.9%) 12 (100%) 5 (100%) >0.99 Yes 9 (7.7%) 0 (0%) 2 (7.1%) 0 (0%) 0 (0%) Note: Data presented as n (%) unless otherwise indicated. Analysis of variance test conducted on all patient treatment groups with a significance threshold of P = 0.05 demonstrating when there is a significant difference in the mean between the groups.
Patient No. Treatment Type Initial (°) 1 y (°) P Value Change (°) 4 Short segment 15.8 ± 10.9 18.2 ± 6.9 0.73 −2.4 28 Multilevel 14.9 ± 8.3 11.6 ± 7.9 0.13 3.3 12 Corpectomy 18.5 ± 7.4 4.4 ± 8.5 <0.001 14.1 5 Delayed 12.8 ± 7.6 21.2 ± 11.1 0.21 −8.4 117 Nonsurgical 11.6 ± 7.2 17.7 ± 7.3 <0.001 −6.1 Patient No. Treatment Type Initial (°) 1 y (°) P Value Change (°) 4 Short segment −11.9 ± 9.1 −18.0 ± 12.2 0.46 −6.1 28 Multilevel −15.5 ± 9.5 −12.8 ± 8.6 0.28 2.7 12 Corpectomy −15.1 ± 8.77 −8.3 ± 10.4 0.098 7.6 5 Delayed −14.3 ± 4.9 −22.4 ± 13. 7 0.27 −8.1 117 Nonsurgical −11.1 ± 7.4 −17.4 ± 9.2 <0.001 −6.4 Patient No. Treatment Type Initial (°) 1 y (°) P Value Change (°) 4 Short segment 17.3 ± 4.7 24.1 ± 5.1 0.099 −6.8 28 Multilevel 16.8 ± 9.4 14.2 ± 8.3 0.28 2.6 12 Corpectomy 22.3 ± 7.0 11.3 ± 9.5 0.004 11.0 5 Delayed 14.8 ± 7.5 23.3 ± 13.2 0.26 −8.5 117 Nonsurgical 13.9 ± 7.9 21.9 ± 8.3 <0.001 −8.1
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