Comparative Five-Year Surgical Outcomes of Open-Door versus French-Door Laminoplasty in Multilevel Cervical Spondylotic Myelopathy

Table 1

Baseline data of patients.

	ODL	FDL
Number of patients	25	35
Male	18	23	0.613
Female	7	12
Age at surgery (year)			0.300
Preoperative symptom duration (month)			0.954
Operative time (min)			0.190
Blood loss (ml)			0.192
Medical expense (China Yuan)			<0.001

Comparison between groups, . ODL: Open-Door laminoplasty; FDL: French-Door laminoplasty.