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Table 4 Fusion and subsidence rate between the allograft and PEEK groups

From: A comparison of contiguous two-level anterior cervical discectomy and fusion using a structural allograft versus a Polyetheretherketone (PEEK) cage: the results of a three-year follow-up

 Allograft
(n = 53)
Peek
(n = 35)
p-value
Cephalad level
 Fusion51 (98.1)35 (100)1.000
 Subsidence4 (7.7)8 (22.9)0.057
Caudal level
 Fusion49 (94.2)35 (100)0.270
 Subsidence8 (15.4)13 (37.1)0.020