Parameters

PELD group

COD group

Sex (male/female)

10/5

8/7

Age (mean, range) in years

35.9 [26 - 43]

35.3 [21 - 50]

Preoperative clinical presentation (No., %):

・ Back pain

・ Sciatica

・ Motor deficit

・ Sphinecteric disturbance

15 (100%)

15 (100%)

0 (0%)

0 (0%)

15 (100%)

15 (100%)

0 (0%)

0 (0%)

Level of disc (No., %):

・ L4-5

・ L5-S1

9 (60%)

6 (40%)

11 (73.33%)

4 (26.66%)

Side of surgery (No., %):

・ Rt side

・ Lt side

10 (66.66%)

5 (33.33%)

5 (33.33%)

10 (66.66%)

Duration of surgery in minutes (mean, range)

124 [80 - 210]

92 [60 - 120]

Blood loss in cc (mean, range)

98.67 [50 - 200]

133.33 [90 - 330]

Intraoperative complication (No., %):

・ Dural tear

・ Nerve injury

3 (20%)

0 (0%)

2 (12.33%)

0 (0%)

Postoperative compilation (No., %):

・ C. S. F leak

・ Wound infection

・ Discitis

・ Pseudomeningocele

0 (0%)

0 (0%)