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Table 1 Measurements of the Preoperative PTA and PLMA

From: The accuracy of a novel pedicle screw insertion technique assisted by a special angular scale in the subaxial cervical spine using lateral mass as a reference marker

Pedicle PTA (°) PLMA (°)
Left Right Left Right
C3 44.8 ± 3.1 (40–50) 43.9 ± 2.8 (39–49) 77.8 ± 4.3 (72–86) 77.5 ± 4.5 (68–85)
C4 43.2 ± 3.4 (37–48) 43.5 ± 3.6 (39–51) 79.1 ± 3.7 (74–89) 79.6 ± 6.0 (72–93)
C5 42.3 ± 4.0 (33–51) 42.6 ± 3.1 (38–49) 83.3 ± 4.4 (76–94) 82.8 ± 4.6 (78–96)
C6 38.7 ± 4.4 (31–45) 38.7 ± 4.3 (29–47) 87.6 ± 6.2 (78–101) 86.7 ± 4.7 (82–102)
C7 33.9 ± 3.7 (25–42) 35.2 ± 2.7 (29–40) 90.3 ± 5.3 (80–102) 89.7 ± 5.2 (83–103)
  1. Data are presented as mean ± standard deviation.
  2. PTA pedicle transverse angle, PLMA pedicle-lateral mass angle