Degenerative

Question 1

Wiltse Classification

Answer 1

of spondylolisthesis
I) dysplastic (L5 or sacral congenital anomaly)
IIA) pars fatigue fracture
IIB) elongated dysplastic pars
IIC) acute pars fracture
IV) traumatic spondy (fx not at the pars)
V) pathologic spondy from bone destruction (cancer, infection)