Study

Mean follow-up

(months)

Number of patients

(Bryan vs ACDF)

Mean age (years) (Bryan vs ACDF)

Clinical outcomes improvement at final follow-up (%) ( improvement or score)

Radiographic outcomes at final follow-up

(Bryan vs ACDF)

HOs (%)

(Bryan vs ACDF)

NDI

Neck VAS

Arm VAS

Mean ROM

Upper adjcent

Lower adjcent

Seok Woo Kim et al. [13]

19 vs 20

(Bryan) vs (ACDF)

51 vs 54

43.85 vs 46.44

7.2 vs 7.6

38 vs 37

12.1 vs 2.3

9.5 vs 10.2

9.2 vs 10.8

12.82 vs 23.07 (Grade 0)

Ben J. Garrido et al. [8]

48

47

(21 vs 26)

40.0 vs 43.3

80% vs 69%

82% vs 67%

86% vs 73%

Not reported

Not reported

Not reported

Not reported

Clarence Leung et al. [7]

12

90 (Bryan)

45

Not reported

Not reported

Not reported

Not reported

Not reported

Not reported

6.7 (>Grade 3)

Shik Shim et al. [6]

6

61 (Bryan)

45.6

22.9%

over 50%

over 50%

6.7 (preop): 8.5 (postop)

Not reported

Not reported

Not reported

Powell JW et al. [10]

24

48

(22 vs 26)

40.0 vs 43.3

Not reported

Not reported

Not

reported

8.4 (Bryan): 0.92 (ACDF)

P > 0.4

P > 0.3

11 vs 8

Rick C. Sasso et al. [14]

24

463 (221 vs 242)

44.4 vs 44.7

Not reported

Not reported

Not reported

7.95 (Bryan): 0.87 (ACDF)

9.1 (Bryan)

6.58 (Bryan)

94.4 (ACDF)

Current study

At least 60

120 (60 vs 60)

41.0 vs 44.0

7.2 vs 8.8

22 vs 26

12 vs 17

7.25 vs 0.80

11.40 vs 10.2

7.80 vs 6.70

15 vs 100 (>Grade 3)