Clinical Study

Clinical Outcome and Fusion Rates after the First 30 Extreme Lateral Interbody Fusions

Table 1

Listing of patient demographic and treatment information.

CharacteristicStatistic

Mean age in years (stdev) (range)62.7 (10.5) (30–81)
Female (%)20 (66.7)
Mean body mass index (BMI), (stdev) (range)26.7 (5.4) (17.6–37.9)
Comorbidities
 Comorbidity type
 Tobacco use (%)6 (20)
 Diabetes (%)4 (13)
 Any prior lumbar spine surgery (%)6 (20)
  Lami/MLD (%)4 (67)
  Fusion (%)2 (33)
Primary diagnosis (1 missing)
 Degenerative disc disease (%)12 (41)
 Herniated nucleus pulposus (%)1 (3)
 Spondylolisthesis (%)9 (31)
 Scoliosis (%)7 (24)
Levels treated (mean per patient) (range)43 (1.4) (1–3)
 T6-7 (% of levels) (% of patients)1 (2) (3)
 L1-L2 (% of levels) (% of patients)1 (2) (3)
 L2-L3 (% of levels) (% of patients)6 (14) (20)
 L3-L4 (% of levels) (% of patients)17 (40) (57)
 L4-L5 (% of levels) (% of patients)17 (40) (57)
Biologics used
 rhBMP-2 (%)30 (100)
Fixation type (%)
 Interspinous plating (%)2 (7)
 Transpedicular fixation (%)13 (40)
  Unilateral (%)2 (15)
  Bilateral (%)11 (85)
  Standalone (%)15 (50)
Staged fixation?
 Yes (%)14 (47)
 No (%)16 (53)

: number of patients; stdev: standard deviation; Lami: laminectomy; MLD: microlumbar discectomy.