[Retracted] Clinical Efficacy and Safety of Anterior Cervical Decompression versus Segmental Fusion and Posterior Expansive Canal Plasty in the Treatment of Multilevel Cervical Spondylotic Myelopathy

Table 5

Bone graft fusion and Cobb Angle fusion before and after the operation.

Subgroup analysis	Case (n)	Osteograft fusion		Fusion segment cobb angle
		Bone fusion time	Bone fusion rate	Preoperative	3 months after the surgery
Anterior group	34	6.25 ± 1.37	40 (71.43%)	1.55 ± 0.35	8.55 ± 0.56
Posterior group	22	7.65 ± 1.87	16 (28.57%)	1.65 ± 0.22	7.82 ± 0.35
t		4.655	0.215	5.262	2.455
		0.001	0.065	0.001	0.002