Table 3.
Quantitative measurements
a Ears with scala communis | |||||||
---|---|---|---|---|---|---|---|
Ear No. | Angle R2 degrees | Angle R3 degrees | CoA mm2 | MoA mm2 | MoA/CoA | AC mm | AB mm |
1 | 135 | 158 | 10.16 | 1.31 | 0.13 | 1.74 | 0.20 |
2 | 105 | 126 | 11.18 | 2.19 | 0.20 | 1.87 | 0.17 |
3 | 97 | 136 | 15.30 | 2.81 | 0.18 | 2.14 | 0.35 |
4 | 114 | 111 | 14.71 | 3.14 | 0.21 | 2.01 | 0.26 |
5 | 110 | 116 | 14.60 | 3.27 | 0.22 | 2.01 | 0.29 |
6 | 76 | 87 | 13.91 | 3.62 | 0.26 | 1.95 | 0.31 |
7 | 125 | 88 | 14.25 | 2.89 | 0.20 | 1.99 | 0.17 |
8 | 123 | 107 | 13.10 | 2.53 | 0.19 | 1.93 | 0.19 |
9 | 79 | 88 | 14.67 | 3.65 | 0.25 | 2.22 | 0.30 |
10 | 153 | 110 | 13.68 | 3.06 | 0.22 | 2.09 | 0.10 |
11 | 155 | 128 | 13.23 | 3.25 | 0.25 | 2.11 | 0.11 |
12 | 72 | 51 | 13.89 | 3.42 | 0.25 | 2.04 | 0.38 |
13 | 112 | 163 | 13.89 | 3.21 | 0.23 | 2.03 | 0.24 |
14 | 158 | 115 | 13.49 | 2.35 | 0.17 | 2.31 | 0.09 |
15 | 160 | 134 | 13.33 | 2.26 | 0.17 | 2.25 | 0.07 |
16 | 56 | 93 | 13.58 | 3.69 | 0.27 | 2.19 | 0.36 |
17 | 106 | 141 | 12.58 | 3.13 | 0.25 | 1.81 | 0.32 |
18 | 110 | 141 | 12.79 | 2.92 | 0.23 | 1.95 | 0.29 |
19 | 154 | 132 | 14.22 | 3.15 | 0.22 | 2.19 | 0.07 |
20 | 66 | 109 | 15.46 | 4.12 | 0.27 | 2.27 | 0.39 |
21 | 66 | 99 | 14.33 | 3.60 | 0.25 | 2.13 | 0.42 |
22 | 98 | 106 | 13.75 | 2.86 | 0.21 | 2.10 | 0.32 |
Mean | 110 | 115 | 13.64 | 3.02 | 0.22 | 2.06 | 0.25 |
Range | 56–160 | 51–158 | 10.16–15.46 | 1.31–4.12 | 0.13–0.27 | 1.74–2.31 | 0.07–0.42 |
SD | 33 | 26 | 1.22 | 0.62 | 0.04 | 0.15 | 0.11 |
b Control ears | |||||||
---|---|---|---|---|---|---|---|
Ear No. | Angle R2 degrees | Angle R3 degrees | CoA mm2 | MoA mm2 | MoA/CoA | AC mm | AB mm |
1 | 74 | 51 | 12.88 | 3.73 | 0.29 | 1.94 | 0.30 |
2 | 52 | 65 | 15.35 | 4.36 | 0.28 | 2.09 | 0.37 |
3 | 57 | 48 | 13.30 | 3.58 | 0.27 | 1.79 | 0.40 |
4 | 63 | 42 | 18.28 | 5.38 | 0.29 | 2.46 | 0.42 |
5 | 54 | 46 | 15.83 | 4.42 | 0.28 | 2.13 | 0.40 |
6 | 40 | 52 | 13.38 | 3.69 | 0.28 | 1.96 | 0.39 |
7 | 55 | 51 | 13.55 | 3.47 | 0.26 | 1.98 | 0.41 |
8 | 61 | 58 | 14.69 | 4.37 | 0.30 | 2.16 | 0.39 |
9 | 46 | 60 | 13.87 | 3.71 | 0.27 | 2.06 | 0.42 |
10 | 97 | 88 | 16.79 | 4.00 | 0.24 | 2.41 | 0.28 |
11 | 66 | 53 | 13.84 | 4.00 | 0.29 | 1.83 | 0.34 |
12 | 40 | 54 | 13.77 | 3.76 | 0.27 | 1.88 | 0.48 |
13 | 52 | 58 | 11.74 | 3.11 | 0.26 | 1.95 | 0.32 |
14 | 66 | 51 | 15.48 | 4.36 | 0.28 | 2.17 | 0.27 |
15 | 47 | 65 | 15.03 | 4.41 | 0.29 | 2.10 | 0.46 |
16 | 69 | 56 | 12.62 | 2.98 | 0.24 | 2.03 | 0.20 |
17 | 37 | 55 | 16.20 | 4.95 | 0.31 | 2.35 | 0.49 |
18 | 51 | 48 | 13.48 | 3.91 | 0.29 | 1.87 | 0.31 |
19 | 62 | 53 | 15.10 | 3.78 | 0.25 | 2.05 | 0.46 |
20 | 53 | 41 | 13.46 | 3.17 | 0.24 | 1.99 | 0.47 |
21 | 70 | 70 | 14.71 | 3.68 | 0.25 | 2.01 | 0.22 |
22 | 78 | 76 | 13.64 | 3.61 | 0.26 | 2.05 | 0.32 |
Mean | 59 | 56 | 14.41 | 3.93 | 0.27 | 2.06 | 0.37 |
Range | 37–97 | 41–88 | 11.74–18.28 | 2.98–5.38 | 0.24–0.31 | 1.79–2.46 | 0.20–0.49 |
SD | 14 | 11 | 1.51 | 0.58 | 0.02 | 0.17 | 0.08 |
CoA = Cochlear area; MoA = modiolar area.