Table 1.
Differences of semicircular canals orientation among age groups (degree)
| Plane | Side | Group A (n=14) | Group B (n=10) | Group C (n=7) | Group D (n=45) | P | Pab | Pac | Pad | Pbc | Pbd | Pcd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ∠A/Psag | L | 23.60±5.79 | 25.09±3.37 | 27.94±5.09 | 26.17±4.32 | NS | - | - | - | - | - | - |
| R | 25.42±5.56 | 24.98±4.03 | 28.30±3.39 | 27.46±4.20 | NS | - | - | - | - | - | - | |
| ∠A/Pcor | L | 84.91±22.76 | 76.51±18.62 | 71.49±16.27 | 69.00±12.70 | <0.01 | NS | NS | <0.01 | NS | NS | NS |
| R | 83.14±22.70 | 77.41±19.25 | 72.83±17.42 | 68.41±13.25 | <0.01 | NS | NS | <0.05 | NS | NS | NS | |
| ∠A/Pfrkt | L | 82.57±4.46 | 80.58±6.94 | 84.00±14.16 | 83.41±7.09 | NS | - | - | - | - | - | - |
| R | 79.08±3.87 | 81.25±7.88 | 82.73±14.33 | 81.88±7.25 | NS | - | - | - | - | - | - | |
| ∠P/Psag | L | 44.68±4.30 | 44.14±7.87 | 43.61±4.91 | 43.55±4.68 | NS | - | - | - | - | - | - |
| R | 44.47± 5.73 | 43.41±5.83 | 42.40±5.81 | 42.50±5.31 | NS | - | - | - | - | - | - | |
| ∠P/PcorL | L | 70.46±40.51 | 63.87±33.29 | 63.08±32.19 | 55.67±20.63 | NS | - | - | - | - | - | - |
| R | 71.29±40.68 | 63.47±30.96 | 63.17±31.06 | 56.45±19.90 | NS | - | - | - | - | - | - | |
| ∠P/PfrktL | L | 82.36±3.88 | 82.45±13.24 | 78.72±9.79 | 79.03±10.24 | <0.05 | NS | NS | <0.05 | NS | NS | NS |
| R | 82.27±4.77 | 80.24±12.75 | 79.71± 9.94 | 79.23±10.64 | NS | - | - | - | - | - | - | |
| ∠H/Psag | L | 86.25±2.84 | 88.41±5.04 | 90.58±7.41 | 89.11±4.32 | NS | - | - | - | - | - | - |
| R | 86.55±4.48 | 89.87±4.43 | 90.11±6.64 | 89.82±4.47 | NS | - | - | - | - | - | - | |
| ∠H/Pcor | L | 85.40±12.66 | 82.43±13.27 | 78.63±16.20 | 74.83±10.07 | <0.01 | NS | NS | <0.05 | NS | NS | NS |
| R | 83.49±13.67 | 82.02±16.70 | 75.11±13.18 | 73.91±10.57 | <0.05 | NS | NS | <0.05 | NS | NS | NS | |
| ∠H/Pfrkt | L | 13.43±3.58 | 30.75±48.12 | 37.67±51.93 | 33.36±45.33 | <0.05 | NS | NS | <0.05 | NS | NS | NS |
| R | 14.85±5.43 | 31.76±45.77 | 38.61±52.89 | 33.72±44.72 | NS | - | - | - | - | - | - |
Values are presented as mean±SD.
Psag, median sagittal plane; Pcor, coronal plane; Pfrkt, Frankfurt horizontal plane; L, left; R, right; NS, not significant.
Groups A–D indicate 1–6, 7–12, 13–18, and >18 years old group, respectively; Pab, Pac, Pad, Pbc, Pbd, Pcd indicate P-value for differences between groups A and B, between groups A and C, between groups A and D, between groups B and C, between groups B and D, and between groups C and D, respectively; ∠ indicate the angle between 2 planes; A, P, and H indicate the anterior, posterior, and horizontal semicircular canal plane, respectively.