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Table 6 Summary of studies reporting multi-level stand-alone ACDF

From: Anterior cervical discectomy and fusion with stand-alone anchored cages versus posterior laminectomy and fusion for four-level cervical spondylotic myelopathy: a retrospective study with 2-year follow-up

Author

Study design

Operated levels

Number of cases

Follow-up time(months)

Device

Fusion rate

Subsidence rate per level (%)

Chen [5]

retrospective

3

28

24

ROI-C or ROI-MC+(LDR MEDICAL, Troyes, France)

85.7%

16.7%

Liu [6]

retrospective

3–4

28

24

ROI-C (LDR MEDICAL, Troyes, France)

100%

Pereira [12]

prospective

3–4

30

62

Solis (Stryker, Kalamazoo, MI, USA)

16.7%

Liu [16]

retrospective

3

25

24

Solis (Stryker, Cestas, France)

72%

4.0%

Zhou [17]

retrospective

3

15

20

ROI-MC+ (LDR MEDICAL, Troyes, France)

93.3%

8.9%

Our study

retrospective

4

26

24

ROI-C or ROI-MC+(LDR MEDICAL, Troyes, France)

86.5%

15.4%