Transforaminal Endoscopic Lumbar Discectomy with versus without Platelet-Rich Plasma Injection for Lumbar Disc Herniation: A Prospective Cohort Study

Table 1

Patient demographics, presentation, and procedural information (mean ± SD).

Characteristics	PRP group, n = 51	Control group, n = 57	value
Age	48.1 ± 10.25	45.9 ± 9.83	0.257
Sex
Male	33 (57.9%)	32 (62.7%)	0.607
Female	24 (42.1%)	19 (37.3%)
Levels			0.388
L3/L4	6 (11.8%)	7 (12.3%)
L4/L5	33 (64.7%)	30 (52.6%)
L5/S1	12 (23.5%)	20 (35.1%)
Platelet levels (×10^9/L)	217.0 ± 52.1	235.9 ± 65.9	0.225
Pfirrmann grading			0.391
Grade 2	9 (17.6%)	5 (8.8%)
Grade 3	34 (66.7%)	42 (73.7%)
Grade 4	8 (15.7%)	10 (17.5%)
MSU-herniated disc grade			0.939
Grade 1	13 (25.5%)	16 (28.1%)
Grade 2	29 (56.9%)	32 (56.1%)
Grade 3	9 (17.6%)	9 (15.8%)
Preoperative VAS score
Leg pain	7.19 ± 2.34	6.80 ± 2.15	0.373
Back pain	5.02 ± 2.55	4.74 ± 3.19	0.612
Preoperative ODI (%)	50.85 ± 19.14	49.73 ± 25.89	0.802

SD, standard deviation; VAS, visual analog scale; ODI, Oswestry Disability Index; MSU, Michigan State University classification system; PRP, platelet-rich plasma.