Table 3 Medical history of symptomatic spinal stenosis (SSS) in adults with achondroplasia (n = 34)
Age at symptom onset (years) | Affected spine level based on imaging reports | Narrowest AP spinal canal diameter (mm) a | Total number of surgeries | Age at first surgery (years) | Time from symptom onset to first surgery (years) |
|---|---|---|---|---|---|
10 | T12-L2, L3-S1 | 2 | 10 | 0.3 b | |
11 | T12-L3 | 2 | 14 | 3 | |
12 | T11–12, L1-S1 | 1 | 22 | 10 | |
12 | T10–12, L2-S1 | 3 | 30 | 18 | |
13 | C3–7, T9–11, L1–5 | 1 | 25 | 12 | |
13 | C4–5, L1–5 | 2 | 17 | 4 | |
14 | L3–5 | 1 | 41 | 27 | |
14 | L1–3 | L2–3: 7.9 | 0 | ||
16 | L2–4 | 1 | 30 | 14 | |
16 | L3–4 | L3–4: 7.7 | 0 | ||
17 | T1–12, L1-S1 | 2 | 18 | 1 | |
21 | C3–4, L1–4 | 1 | 25 | 4 | |
25 | L1-S1 | 1 | 60 | 35 | |
26 | C4–5, L2-S1 | 1 | 28 | 2 | |
26 | T10–11, L2-S1 | 3 | 26 | 0.4 c | |
27 | T7–11 | T7–8: 3.8 | 0 | ||
29 | C3–4, T8–12, L2–5 | 1 | 47 | 18 | |
30 | L3–4 | L3–4: 8.0 | 0 | ||
30 | T12-L2 | 1 | 62 | 32 | |
32 | C4–6, L3–4 | 2 | 48 | 16 | |
33 | L2–5 | 1 | 45 | 12 | |
34 | T10-T12, L3–4 | 2 | 35 | 1 | |
35 | C4–7, L1–5 | 3 | 36 | 1 | |
35 | T8–11, L1–5 | 4 | 36 | 1 | |
39 | L3–5 | 1 | 46 | 7 | |
41 | T10–12, L1-S1 | 3 | 43 | 2 | |
42 | L2–4 | 1 | 44 | 2 | |
43 | C6-T1, T9–10, L3–5 | 1 | 63 | 20 | |
43 | L2–5 | 1 | 45 | 2 | |
45 | L2–5 | 1 | 53 | 8 | |
46 | C2, C4–5, C6–7, L1–3 | L1–2: 5.9 | 0 | ||
57 | C3–4, L4–5 | L1–2: 8.8 | 0 | ||
60 | C1-T1, L1–5 | 2 | 63 | 3 | |
67 | C3–5, L1–2 | 1 | 70 | 3 |