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Table 1 Radiologic Measurements in Various Parameters at L1 to L5 in Our Results and Zindrick et al

From: What is the difference in morphologic features of the lumbar vertebrae between Caucasian and Taiwanese subjects? A CT-based study: implications of pedicle screw placement via Roy-Camille or Weinstein method

Radiologic parameters Study L1 L2 L3 L4 L5
Mean SD Range Number Mean SD Range Number Mean SD Range Number Mean SD Range Number Mean SD Range Number
Pedicle angle (PA) (0)a Our results 9.3 1.6 6–14 156 7.4 2.1 4–12 162 7.9 1.8 4–13 154 11.2 3.2 5–19 156 17.0 3.1 9–25 146
Zindrick et al 10.9 2.2 6.5–14.5 26 12 3.5 5–17.5 38 14.4 3.8 8.0–23.5 68 17.7 5.2 5.5–27.5 76 29.8 6.3 19–44 76
Midline axis distance (MAD) (mm)a Our results 40.3 3.3 34–49 156 41.1 3.3 36–47 162 38.8 3.6 31–46 154 37.3 5.3 25–45 156 31.4 3.6 25–44 146
Zindrick et al 44.7 4.5 36–51 26 45.5 3.7 37–52 35 44.4 5.1 31–54 64 40.7 4.3 27–48 74 33.7 5.6 20–44 69
Pedicle axis distance (PAD) (mm)a Our results 44.8 4.8 37–56 156 46.4 5.8 36–58 162 43.5 5.0 35–58 154 43.7 5.0 33–58 156 43.3 4.5 32–57 146
Zindrick et al 50.7 4.3 42–57 26 51.9 3.7 45–58 35 51.9 4.6 42–62 64 49.7 4.4 43–62 74 51.0 4.7 42–62 69
Pedicle diameter (PD) (mm)a Our results 5.7 1.2 4–10.4 156 6.4 1.6 4–12.2 162 7.6 2.0 4.3–14.2 154 10.1 1.8 7–14.4 156 12.6 2.1 9.6–25.1 146
Zindrick et al 8.7 2.3 4.5–13 26 8.9 2.2 4–13 30 10.3 2.6 5.3–16 49 12.9 2.1 9.1–17 36 18.0 4.1 9.1–29 56
Transverse pedicle axis distance (TPAD) (mm) Our results 45.3 3.5 40–52 156 48.1 3.6 42–55 162 46.1 4.1 40–57 154 45.7 4.1 39–55 156 44.1 4.3 35–57 146
Zindrick et al                     
  1. No TPAD results were revealed in the Zindrick et al. These columns were empty
  2. The two sides of the pedicle angle, pedicle diameter, midline and pedicle axis and TPAD in one vertebrae were considered as independent sets of data
  3. a meant statistically significant between Caucasian and Taiwanese populations