Spine
-
Retrospective study. ⋯ 3.
-
A retrospective review of a prospective, multicenter database. ⋯ 3.
-
Systematic review OBJECTIVE.: To undertake a systematic review of published literature to evaluate efficacy of bone graft substitutes on radiographic and clinical outcomes in single- or double-level anterior cervical discectomy and fusion (ACDF) for degenerative disease. ⋯ 4.
-
Qualitative study. ⋯ 4.