Selective Retention of Bone Marrow Stromal Cells with Gelatin Sponge for Repair of Intervertebral Disc Defects after Microendoscopic Discectomy: A Prospective Controlled Study and 2-Year Follow-Up

Table 1

The demographic and clinical details of the enrolled patients.

Sample size
		MMED	MMED+AFS	MMED+AFS+BMSCs
Age range (year)		23-64 ()	28-51 ()	25-60 ()
Gender	Male	9	11	8
	Female	6	4	7
Operation level	L3-L4	3	2	2
	L4-L5	6	6	4
	L5-S1	6	7	9
Pfirrmann grade (pre)	III	3	2	3
	IV	8	9	9
	V	4	4	3
Operation time (min)		35-50 ()	40-55 ()	54-75 ()
Blood loss (mL)		10-20 ()	10-15 ()	15-25 ()
Hospital stay (day)		8-17 ()	8-16 ()	6-17 ()