TABLE 1.

Quantification of Cases of Spondylolisthesis Identified on Various Imaging Modalities

Spondylolisthesis Identified On	n (%)
Neutral or flexion-extension radiograph	77 (100.00)
Neutral radiograph	60 (77.92)
Flexion-extension radiograph	57 (74.03)
Neutral and flexion-extension radiograph	40 (51.90)
MRI	52 (67.53)
Radiograph but not MRI	29 (37.66)
Neutral radiograph but not flexion-extension radiograph	20 (25.97)
Flexion-extension radiograph but not neutral radiograph	17 (22.08)

MRI indicates magnetic resonance imaging.