Table 3.
Digital geometric measurements of lumbar vertebral endplates
| Disc | Endplate | Endplate | Central endplate | Epiphyseal rim | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | APD | TD | Depth | Area | APD | TD | Area | Anterior width | Lateral width | Posterior width | ||
| T12/L1 | Cranial | NA | NA | NA | ||||||||
| Caudal | 36 | 34.8 ± 3.2 | 45.3 ± 3.7 | 0.3 ± 0.7 | 12.5 ± 2.1 | 23.3 ± 2.5 | 34.7 ± 3.0 | 7.3 ± 1.3 | 4.9 ± 1.5 | 4.9 ± 1.4 | 2.9 ± 1.0 | |
| L1/2 | Cranial | 39 | 35.5 ± 2.9 | 47.6 ± 4.0 | 1.0 ± 0.7 | 14.1 ± 2.2 | 24.1 ± 2.4 | 34.9 ± 2.6 | 7.4 ± 1.0 | 5.7 ± 1.5 | 6.5 ± 1.6 | 2.9 ± 1.0 |
| Caudal | 61 | 35.7 ± 2.3 | 47.0 ± 3.5 | 0.5 ± 0.9 | 14.4 ± 2.1 | 24.6 ± 2.7 | 36.0 ± 2.8 | 7.9 ± 1.3 | 5.2 ± 1.4 | 5.7 ± 1.3 | 3.0 ± 0.9 | |
| L2/3 | Cranial | 61 | 36.2 ± 2.8 | 50.3 ± 3.6 | 1.2 ± 0.6 | 15.4 ± 2.3 | 24.9 ± 2.6 | 34.7 ± 3.4 | 7.5 ± 1.4 | 6.2 ± 1.8 | 8.0 ± 2.1 | 2.8 ± 0.8 |
| Caudal | 19 | 35.7 ± 3.1 | 48.0 ± 3.1 | 0.8 ± 0.9 | 14.9 ± 2.4 | 24.3 ± 2.0 | 35.7 ± 3.2 | 7.8 ± 1.7 | 5.3 ± 1.8 | 6.5 ± 1.6 | 3.5 ± 1.1 | |
| L3/4 | Cranial | 19 | 35.6 ± 2.8 | 51.5 ± 3.4 | 1.5 ± 0.7 | 15.6 ± 2.1 | 24.0 ± 2.8 | 34.2 ± 3.8 | 6.7 ± 1.5 | 6.4 ± 2.1 | 8.7 ± 2.3 | 3.2 ± 1.1 |
| Caudal | 73 | 35.8 ± 2.8 | 51.3 ± 3.7 | 0.7 ± 0.9 | 15.8 ± 2.4 | 25.2 ± 2.6 | 37.5 ± 3.3 | 8.2 ± 1.4 | 5.7 ± 1.8 | 6.9 ± 2.1 | 3.2 ± 0.9 | |
| L4/5 | Cranial | 73 | 36.1 ± 2.8 | 53.6 ± 3.7 | 1.9 ± 0.8 | 16.7 ± 2.4 | 25.6 ± 3.3 | 35.3 ± 4.9 | 7.9 ± 1.9 | 6.2 ± 2.0 | 9.4 ± 2.7 | 3.4 ± 1.2 |
| Caudal | 69 | 35.5 ± 2.9 | 53.0 ± 4.1 | 0.5 ± 0.7 | 16.1 ± 2.5 | 25.2 ± 3.1 | 37.4 ± 3.8 | 8.2 ± 1.8 | 5.4 ± 2.1 | 7.8 ± 2.6 | 3.8 ± 1.3 | |
| L5/S1 | Cranial | 72 | 34.7 ± 3.2 | 52.3 ± 4.7 | 1.5 ± 0.9 | 15.8 ± 3.0 | 23.8 ± 3.7 | 37.7 ± 5.3 | 8.3 ± 2.2 | 5.9 ± 2.1 | 7.7 ± 2.3 | 3.6 ± 1.6 |
| Caudal | 69 | 33.8 ± 3.5 | 51.2 ± 5.3 | 1.0 ± 1.1 | 15.1 ± 2.8 | 24.6 ± 2.9 | 38.0 ± 5.7 | 8.2 ± 1.8 | 4.7 ± 1.9 | 6.8 ± 2.4 | 3.5 ± 1.3 | |
| Overall | Cranial | 264 | 35.6 ± 3.0 | 51.4 ± 4.5 | 1.5 ± 0.8 | 15.7 ± 2.6 | 24.8 ± 3.1 | 35.7 ± 4.5 | 7.8 ± 1.8 | 6.1 ± 1.9 | 8.1 ± 2.5 | 3.2 ± 1.3 |
| Caudal | 327 | 35.2 ± 3.1 | 50.0 ± 4.9 | 0.7 ± 0.9 | 15.3 ± 2.5 | 24.7 ± 2.8 | 36.9 ± 4.0 | 8.0 ± 1.7 | 5.2 ± 1.8 | 6.6 ± 2.3 | 3.3 ± 1.1 | |
| Range | Cranial | 264 | 26–44.2 | 38–69.7 | 0–3.7 | 9.7–27.7 | 16.5–35.5 | 24–53.9 | 3.7–17 | 2.3–13 | 3.4–17.4 | 1.0–9.2 |
| Caudal | 327 | 23–44.9 | 36–69.3 | 0–3.9 | 10.2–23.9 | 17–35.5 | 26–56.0 | 3.8–17.3 | 1.3–16 | 2.3–18.0 | 1.2–7.2 | |
Data were mean ± standard deviation
APD anterior–posterior diameter (mm), TD transverse diameter (mm), depth mean depth of concavity (mm), area surface area (cm2)