Intervertebral prosthesis versus anterior lumbar interbody fusion: one-year results of a prospective non-randomised study.

The authors conducted a prospective non-randomised study on the ProDisc intervertebral prosthesis versus anterior lumbar interbody fusion (ALIF). The first group included 14 patients, the second group 10 patients. In the ProDisc group the Oswestry Disability Index improved from +/- 38.