Incidence of lumbar disc surgery: A population-based study in Olmsted County. Minnesota, 1950-1979
Bruske-Hohlfeld I, Merritt JL, Onofrio BM, et al. Incidence of lumbar disc surgery: a population-based study in Olmsted County. Minnesota, 1950-1979. Spine 1990;15:31-5.
A prospective study of patients with sciatica: A comparison between conservatively treated patients and patients who have undergone operation. 11. Results after one year follow-up
Alaranta H. Hurme M. Einola S. et al. A prospective study of patients with sciatica: a comparison between conservatively treated patients and patients who have undergone operation. 11. Results after one year follow-up. Spine 1990:15: 1345-9.
Unstable lumbar spine without hypermobility in postlaminectomy cases: Mechanism of symptoms and effects of spinal fusion with and without spinal instrumentation
Sano S. Yokokura S, Nagata Y, Young SZ. Unstable lumbar spine without hypermobility in postlaminectomy cases: mechanism of symptoms and effects of spinal fusion with and without spinal instrumentation. Spine 1990;15:1190-7.