Correction loss following short-segment posterior fixation for traumatic thoracolumbar burst fractures related to endplate and intervertebral disc destruction

Table 2 Comparison of clinical data between patients with grades 0–2 and grade 3 TIDL

	Total (n = 48)	Grades 0, 1, and 2 TIDL (n = 28)	Grade 3 TIDL (n = 20)	P-value
Sex (male/female), n	27/21	16/12	11/9	0.883^a
Age, years	35.0 (15.5), 30.5, 39.5	34.2 (15.0), 28.3, 40.2	36.1 (16.6), 29.1, 43.2	0.689*
Body mass index, kg/m²	22.0 (3.7), 20.9, 23.0	22.6 (3.8), 21.2, 24.0	21.1 (3.6), 19.5, 22.8	0.182**
Follow-up period, months	26.5 (21.9), 20.1, 32.8	26.3 (21.7), 17.9, 34.7	26.7 (22.7), 16.7, 36.7	0.866*
Fracture level (T12, L1/L2–4), n	27/21	19/9	8/12	0.055^a
AO classification, n
B1/A3, A4, B2	11/37	11/17	0/20	0.001^b
LSC score, n
< 7 / ≥7	28/20	20/8	8/12	0.029^a
Vertebroplasty, n	17	9	8	0.575^a
Implant removal, n	38	21	17	0.488^b
Severe back pain, n	11	1	10	< 0.001^b

Continuous data are expressed as mean (SD), 95% confident intervals. P-values are calculated between the data of patients with TIDL grades 0–2 and grade 3 by Mann-Whitney test*, t-test**, chi-square test^a, and Fisher’s exact test^b
TIDL traumatic intervertebral disc lesion, LSC load sharing classification

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