van der Werf G J, Tonino A J, Zeegers W S
Acta Orthop Scand. 1985 Oct;56(5):378-9. doi: 10.3109/17453678508994351.
Direct repair of the defect in spondylolysis has been performed on 12 patients with a mean age of 29 years. With an average follow-up period of 3 years, 8 patients had a good result, 2 patients improved only slightly and 2 patients remained unchanged.