Table 4.

Clinically Significant Injury Distribution by Location

					Fisher's Exact Test P-Value
Level	All	Surgery	Halo	CTO	Sx vs Halo	Halo vs CTO	Sx vs CTO
C1	27 (13.6%)	16 (10.5%)	9 (36%)	2 (10%)	0.0024	0.0791	1.0000
C2	66 (33.3%)	40 (26.1%)	22 (88%)	4 (20%)	0.0001	0.0001	0.7853
C3	18 (9.1%)	12 (7.8%)	3 (12%)	3 (15%)	0.4466	1.0000	0.3874
C4	51 (25.8%)	47 (30.7%)	3 (12%)	1 (5%)	0.0578	0.6174	0.0154
C5	59 (29.8%)	54 (35.3%)	4 (16%)	1 (5%)	0.0667	0.3624	0.0045
C6	94 (47.5%)	83 (54.2%)	3 (12%)	8 (40%)	0.0001	0.0409	0.2449
C7	64 (32.3%)	53 (34.6%)	2 (8%)	9 (45%)	0.0088	0.0059	0.4577

Surgery- 153 patients, Halo- 25 patients, CTO- 20 patients

Abbreviation: CTO- Cervical Thoracic Orthosis