From: Clinical and radiographic outcomes of cervical disc arthroplasty with Prestige-LP Disc: a minimum 6-year follow-up study
Grade of HO
2-year follow-up
Final follow-up
0
59 (76.6%)
44 (57.1%)
1
6 (7.8%)
7 (9.1%)
2
4 (5.2%)
8 (10.4%)
3
10 (13.0%)
4
2 (2.6%)