From: Comparison among perfect-C®, zero-P®, and plates with a cage in single-level cervical degenerative disc disease
Perfect-C
(n = 41)
Zero-P
(n = 36)
Plate-Cage
(n = 71)
P-value
Sex
Female
18
11
31
Male
23
25
40
0.374
Mean age
57.46 ± 11.35
55.64 ± 10.31
55.06 ± 11.13
0.533