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Table 2 Average main curvature and pelvic obliquity in SMA II and IIIa non-surgery patients

From: Natural course of scoliosis in proximal spinal muscular atrophy type II and IIIa: descriptive clinical study with retrospective data collection of 126 patients

Patient’s age (years) n Ø, ±, min – max, median n Ø, ±, min – max, median
Main curve of the scoliosis (Cobb angle °)
  SMA II (N = 58) SMA IIIa (N = 12)
0 - 4 9 Ø 26, ± 7, 15 - 40, 25 1 28
5 - 6 10 Ø 42, ± 19, 12 - 70, 37 2 28 and 32
7 - 10 25 Ø 63, ± 32, 17 - 138, 58 3 Ø 34, ± 8.5, 25 - 42, 35
11 - 13 6 Ø 74, ± 16, 56 - 102, 72.5 2 42 and 51
14 - 15 4 Ø 82, ± 28, 50 - 112, 83.5 1 54
16 - 20 4 Ø 73, ± 18, 58 - 100, 67.5 3 Ø 45, ± 8, 40 - 54, 42
Pelvic obliquity (°)
  SMA II (N = 72) SMA IIIa (N = 18)
0 - 4 5 Ø 7, ± 4.5, 0 - 10, 10 - -
5 - 6 12 Ø 17, ± 7, 0 - 30, 15 1 10
7 - 10 36 Ø 18, ± 10, 0 - 45, 15 3 Ø 10, ± 10, 0 - 20, 10
11 - 13 7 Ø 19, ± 15, 0 - 45, 20 5 Ø 10, ± 10, 0 - 20, 10
14 - 15 8 Ø 26, ± 13, 0 - 45, 27.5 5 Ø 8, ± 11, 0 - 20, 0
16 - 20 4 Ø 24, ± 18, 0 - 40, 27.5 4 Ø 14, ± 5, 10 - 20, 12.5