Table 1.

Details of treated levels with fusion rates when both levels are fused

Levels	Number of cases	Rate to total (%)	Number of fusions	Rate of fusion (%)
C3–4/4–5	8	10.10	8	100
C4–5/5–6	17	21.50	15	88.20
C5–6/6–7	52	65.80	45	86.50
C6–7/C7–Th1	2	2.50	2	100
Total/mean	79	100	70	88.60