Study Summary of Significant Findings (Patient Reported Outcomes)
Zigler and Delamarter, 2012 [19] Significantly lower scores for pain intensity (p = 0.0122) and frequency (p = 0.0263) in the BRYAN than fusion group at the 5-year follow-up for VAS neck pain score.
Zhang et al., 2012 [12] VAS neck pain score was significantly better in BRYAN group relative to fusion group at 24 months follow ups  (p = 0.013).
Cheng et al., 2011 [13] Return to work was significantly sooner in BRYAN patients at all time points. (p<0.01). NDI score was significantly better in BRYAN group than fusion patients at 24 months and 36-month follow-ups. (p<0.05) SF-36 PCS was significant better in BRYAN group than fusion patients at 12, 24 and 36-month follow ups. (p<0.05) JOS was significantly better in BRYAN group than fusion patients at 36-month follow-ups. (p<0.05)
Sasso et al., 2011 [14] NDI was significantly better in BRYAN group at 1.5, 3, 6, 12, 24, 48-month relative to ACDF (p<0.05). Improvements in arm pain score significantly favored BRYAN over fusion group at 12 and 48-month (p<0.05). Neck pain scores was significantly better in BRYAN than fusion group at 1.5, 3, 6, 12, 24, 48-month follow-up (p<0.05). SF-36 PCS*: Significantly better in BRYAN than fusion group at 1.5, 3, 6, 12, 48-month follow-ups. (p<0.02) Overall Success*: Significantly higher in BRYAN than fusion group  at 1.5, 3, 6, 12, 48-month follow-ups. (p<0.02)
Coric et al., 2011 [18] Rate of Overall Success*: Significantly higher at the 24 month follow up. (p = 0.05)
Burkus et al., 2010 [16] NDI*: Significantly better NDI scores in PRESTIGE group compared to fusion patients at 1.5, 3, 36, 60-month follow-ups. (p<0.05) SF-36 PCS*: Significantly better SF-36 scores in PRESTIGE group at 36-month follow-up. (p = 0.038) Neck pain score*: Significantly better in PRESTIGE group compared to fusion patients at 1.5, 3, 12, 36-month follow-ups.
Porchet and Metcalf, 2004 [15] No significant findings detected
Abbreviations: JOS (Japanese Orthopedics Association Scale), MCS (Mental Component Summary), NDI (Neck Disability Index), PCS (Physical Component Summary), SF-36 (Short Form 36), VAS (Visual Analog Scale)
Table 2: Summary of Patient Reported Outcomes (Arthroplasty versus Anterior Cervical Discectomy and Fusion).