Multicenter Study

A prospective cohort study of close interval computed tomography and magnetic resonance imaging after primary lumbar discectomy: factors associated with recurrent disc herniation and disc height loss.

Spine. 2009 Sep 1;34(19):2044-51.
Article

Asymptomatic same-site recurrent disc herniation after lumbar discectomy: results of a prospective longitudinal study with 2-year serial imaging.

Spine. 2011 Dec 1;36(25):2147-51.
Article

Percutaneous endoscopic lumbar discectomy for migrated disc herniation: classification of disc migration and surgical approaches.

Eur Spine J. 2007 Mar 1;16(3):431-7.