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Table 1 Case presentation

From: Minimally invasive dynamic screw stabilization using cortical bone trajectory

  Age Gender Symptoms Radiological diagnosis Surgical time (mins) Blood loss
(ml)
Hospital stay (days) Follow-up (months) Post-operative narcotics a Pre-operative ROM last follow up
ROM b
VAS improvement
Case 1 68 Female Back pain
Left sciatica
L4/5 grade I spondylolisthesis 225 250 5 28 Tramadol
75 mg/day
6.1 3.1 Back: 5- > 3
Leg: 3- > 2
Case 2 58 Male Back pain
Left sciatica
L4/5 ruptured disc 225 30 3 14 Tramadol
150 mg/day
15.4 3.1 Back:3- > 0
Leg: 10- > 0
Case 3 62 Female Back pain L4/5 grade I spondylolisthesis 265 100 9 15 Tramadol 37.5 mg/day 9.6 1.2 Back:9- > 2
Leg:0- > 0
Case 4 71 Male Left Leg radiation numbness L4/5 ruptured disc 260 50 3 31 Tramadol
150 mg/day
10.3 2.4 Back:2- > 0
Leg:1- > 0
  1. VAS visual analog scale
  2. a All patients were weaned off narcotics within 3 months after operation
  3. b After dynamic stabilization, the range of motion was significantly reduced