Privett J T, Middlemiss J H
Br J Radiol. 1975 Oct;48(574):866-9. doi: 10.1259/0007-1285-48-574-866.
A case is reported in which there was bilateral spondylolysis involving LV3, LV4 and LV5. It is thought that the condition is due to postural stress in a patient having a predisposing genetic weakness of the pars interarticularis.