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Table 1 Demographic characteristics and surgery information among ACDF, HS1, and HS2 groups

From: Exploration on sagittal alignment and clinical outcomes after consecutive three-level hybrid surgery and anterior cervical discectomy and fusion: a minimum of a 5-year follow-up

 ACDFHS1HS2P
Gender (M/F)17/1517/1914/110.779
Age (years)57.2 ± 8.355.5 ± 7.555.2 ± 12.60.695
BMI (kg/m2)24.8 ± 3.425.3 ± 3.326.0 ± 1.60.658
DM (n)3740.505
Smoking (n)61050.631
Follow-up (months)74.5 ± 9.678.3 ± 8.576.0 ± 6.30.205
Operated segments   0.295
C3–C6 (n)71140.403
C3–C6: CCD/CDC/DCCa/2/7/2/ 
C3–C6: DDC/DCD/CDDa  2/1/1 
C4–C7 (n)252521 
C4–C7: CDC/DCCa/3/22/ 
C4–C7: DDC/DCD/CDDa//13/7/1 
Operation time (min)101.1 ± 21.1107.3 ± 17.8122.0 ± 13.00.063
Blood loss (ml)71.3 ± 37.186.8 ± 73.585.0 ± 36.40.538
  1. ACDF anterior cervical discectomy and fusion, HS hybrid surgery, HS1 one prosthesis and two cages, HS2 two prostheses and one cage, M male, F female, BMI body mass index, DM diabetes mellitus
  2. aIt means the implantation order from cranial to caudal segments. For example, C3–C6: CCD means artificial disk of C3/4 + artificial disk of C4/5+ peek cage of C5/6