Table 3 Cervical Disc measurements; measurements were compiled using weighted averages from studies of adult radiographs and cadavers; however a lack of reporting on age, gender and racial variation limits the value of such data [ 47 , 48 , 51 , 58 , 75 , 76 ]
Average disc height* | Anterior disc height (Range)* | Midpoint disc height (Range)* | Posterior disc height (Range)* | Average distracted disc height (Range) | Width of disc space* | Anterior-posterior diameter* | Linear end-plate width | |
|---|---|---|---|---|---|---|---|---|
C2/3 | 3.42 | 4.07 (3.22-4.92) | 4.17 (3.55-4.79) | 2.95 (2.09-3.81) | 8.5 (6–9) | 23.0 (19.0-28.0) | 17.9 (13.0-19.0) | 15.8 |
C3/4 | 3.87 | 3.42 (2.10-5.52) | 4.54 (2.7-5.43) | 2.94 (1.70-4.50) | 8.8 (6–10) | 22.0 (20.0-25.0) | 19.8 (17.0-23.0) | 17.2 |
C4/5 | 4.21 | 3.28 (1.70-5.32) | 4.30 (2.62-4.86) | 2.70 (1.66-3.70) | 8.8 (8–11) | 24.2 (23.0-27.0) | 18.8 (16.0-23.0) | 17.5 |
C5/6 | 3.85 | 3.30 (2.18-4.92) | 4.01 (2.00-4.60) | 2.84 (1.4-3.56) | 9 (6–13) | 25.3 (21.0-30.0) | 20.7 (19.0-24.0) | 18.5 |
C6/7 | 3.37 | 3.80 (2.79-4.60) | 4.63 (2.81-5.3) | 2.49 (1.70-3.50) | 8.5 (6–11) | 28.7 (28.0-35.0) | 20.8 (20.0-23.0) | 21.8 |