Table 1.
Disc conditions of cephalad and caudad levels in patients with congenital C4–5 synostosis
| No. | Patients | Level of cervical spinal segments |
Remarks | ||||||
|---|---|---|---|---|---|---|---|---|---|
| C0–1 | C1–2 | C2–3 | C3–4 | C5–6 | C6–7 | C7–T1 | |||
| 1 | Chang SY (2/M) | - | - | - | - | - | - | - | Slightly inwaisted fused vertebral body |
| 2 | Sohn SY (22/M) | - | - | - | - | - | - | - | Slightly inwaisted fused vertebral body |
| 3 | Chung SY (27/F) | - | - | - | - | - | - | - | |
| 4 | Kim BE (31/F) | - | - | - | - | - | - | - | |
| 5 | Sohn HK (38/M) | - | - | - | - | - | - | - | |
| 6 | Sohn CM (42/M) | - | - | - | - | - | - | - | |
| 7 | Chung MH (45/M) | - | - | - | - | - | - | - | |
| 8 | Bae KS (56/M) | - | - | - | ± | ± | - | - | |
| 9 | Kim SS (61/F) | - | - | - | - | - | + | - | |
| 10 | Lee MO (62/F) | - | - | - | - | - | - | - | Inwaisted body |
| 11 | Lee KS (90/F) | - | - | + | +++ | + | ++ | - | Slight loss of lordosis |
| Total | 0 | 0 | 1 | 2 | 2 | 1 | 0 | Disc degeneration in 6 segments totally | |
Disc space conditions: normal height, -; suspected, ±; mild narrowing (25%), +; moderate narrowing (50%), ++; relatively severe narrowing (75%): +++; very severe narrowing (over 75%), ++++.
M, male; F, female.