From: Values of thoracic kyphosis and lumbar lordosis in adolescents from Czestochowa
Values in ° K-kyphosis L-lordosis | 9 y. | 10 y. | 11 y. | 12 y. | 13 y. | 14 y. | 15 y. | 16 y. | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  | boys | girls | boys | girls | boys | girls | boys | girls | boys | girls | boys | girls | boys | girls | boys | girls |
mean | K | 34.5 | 32.9 | 31.0 | 31.5 | 32.7 | 30.0 | 32.8 | 31.2 | 33.1 | 32.8 | 33.5 | 32.5 | 35.1 | 32.8 | 37.5 | 29.7 |
 | L | 34.5 | 36.4 | 32.7 | 34.6 | 33.2 | 34.3 | 33.7 | 34.7 | 32.2 | 33.9 | 30.4 | 35.4 | 32.1 | 36.0 | 33.1 | 36.4 |
SD | K | 7.33 | 6.37 | 7.01 | 8.05 | 8.05 | 7.30 | 7.76 | 7.32 | 8.28 | 8.12 | 8.23 | 6.94 | 7.46 | 7.29 | 7.48 | 6.97 |
 | L | 5.59 | 6.79 | 7.52 | 7.54 | 7.08 | 7.48 | 7.44 | 7.15 | 7.36 | 6.99 | 7.53 | 7.76 | 6.63 | 8.85 | 8.0 | 7.56 |
median | K | 35 | 34 | 30 | 32 | 32 | 30 | 32 | 30 | 32 | 32 | 33 | 34 | 36 | 33 | 38 | 29 |
 | L | 33 | 36 | 32 | 34 | 32 | 34 | 32 | 34 | 32 | 34 | 30 | 34 | 32 | 38 | 34 | 36 |
minimum | K | 20 | 22 | 16 | 10 | 16 | 12 | 16 | 11 | 18 | 16 | 18 | 18 | 20 | 16 | 26 | 18 |
 | L | 20 | 18 | 16 | 18 | 16 | 18 | 12 | 16 | 10 | 18 | 16 | 16 | 16 | 16 | 14 | 20 |
maximum | K | 46 | 42 | 50 | 50 | 56 | 8 | 56 | 46 | 58 | 56 | 52 | 44 | 50 | 44 | 54 | 42 |
 | L | 44 | 44 | 50 | 58 | 54 | 50 | 56 | 52 | 50 | 54 | 54 | 52 | 46 | 54 | 46 | 48 |
10th Perc. | K | 24 | 24 | 22 | 20 | 22 | 22 | 22 | 22 | 24 | 24 | 22 | 24 | 24 | 24 | 30 | 22 |
 | L | 30 | 30 | 24 | 26 | 24 | 24 | 24 | 26 | 24 | 26 | 22 | 28 | 24 | 22 | 24 | 26 |
90th Perc. | K | 44 | 42 | 40 | 42 | 44 | 40 | 42 | 42 | 46 | 44 | 42 | 42 | 44 | 40 | 46 | 40 |
 | L | 42 | 44 | 42 | 44 | 42 | 44 | 44 | 44 | 42 | 42 | 40 | 48 | 40 | 44 | 42 | 46 |