Diagnosis

Distribution %

(Patient Count) n = 316

Adjacent Segment Disease

1% (4)

Degenerative Disc Disease

28% (88)

Disc Herniation

36% (114)

Instability

4% (14)

Prior Discectomy

2% (7)

Prior Fusion Surgery

5% (17)

Pseudoarthrosis

2% (5)

Spondylolisthesis

27% (86)

Stenosis

47% (147)