#200 A 3D Knowledge-based Grading System for Heterotopic Ossification Following Cervical Disc Arthroplasty
M.F. Gornet(1), J.A. Hipp(2), A.G. Copay(3), F.W. Schranck(3)
#629 Comparison of Two-year Clinical Outcomes with activL Artificial Disc vs. Circumferential Fusion
J. Yue(1), L. Miller(2)
#719 Clinical Failure after Cervical Total Disc Arthroplasty Causing Symptomatic Adjacent Segment Degeneration and Spontaneous Arthrodesis at the Level of Arthroplasty: A Case Report
S.H. Yoon(1)