Research Article
Femoral Head Coverage Assessment in Healthy Children Younger than 6 Years
Table 1
Reference values of normal FH coverage by different acetabular regions in boys and girls aged 1–6 y.o.
| FHC | Male | Mean (±std. dev.) Minimum/maximum | Female | Mean | (±std. dev.) | Minimum/maximum |
| y.o. | AC | S-AC | S-PC | P-SC | P-IC | AC | S-AC | S-PC | P-SC | P-IC | 1 | 19.44 (±15.7) 0/38 | 89.05 (±3.76) 81/100 | 86.29 (±3.38) 77/94 | 50.14 (±5.12) 44/62 | 50.2 (±5.06) 39/60 | 14.54 (±17.6) 0/41 | 88.9 (±5.0) 79/97 | 84.72 (±5.43) 73/92 | 49.04 (±6.79) 34/58 | 51.31 (±5.99) 42/64 | 2 | 28.57 (±9.98) 5/41 | 92.35 (±6.74) 83/103 | 90.78 (±5.28) 84/99 | 53.92 (±3.56) 47/60 | 53.42 (±5.41) 43/60 | 33.93 (±4.5) 25/41 | 100.87 (±30.09) 78/211 | 91.06 (±6.14) 76/98 | 56.93 (±5.3) 50/66 | 57.87 (±5.94) 50/67 | 3 | 36.1 (±4.48) 27/43 | 98.2 (±4.2) 90/107 | 96.45 (±3.45) 89/103 | 63.1 (±2.8) 57/68 | 60.85 (±4.03) 53/68 | 30.72 (±15.28) 0/47 | 94.22 (±5.48) 84/104 | 92.5 (±7) 70/100 | 61.16 (±6.47) 49/72 | 63.22 (±6.3) 52/71 | 4 | 35.07 (±8.97) 11/44 | 96.15 (±4.28) 89/105 | 95.57 (±3.94) 88/103 | 61.92 (±3.59) 57/71 | 62.03 (±3.9) 55/68 | 34.54 (±11.28) 8/48 | 95.68 (±4.86) 87/106 | 94.63 (±5.42) 83/102 | 61.45 (±7.31) 42/71 | 63.45 (±7.23) 47/71 | 5 | 41.61 (±4.56) 35/50 | 100.15 (±5.37) 90/109 | 99.53 (±3.92) 91/106 | 66.19 (±3.8) 58/73 | 64.11 (±4.06) 59/75 | 41.24 (±9.83) 28/57 | 99.35 (±4.41) 92/104 | 100.85 (±3.69) 94/106 | 69.64 (±7.84) 59/85 | 66.5 (±5.53) 59/78 | 6 | 41.72 (±4.8) 30/51 | 100.63 (±4.12) 92/107 | 100.44 (±4.39) 92/110 | 68.86 (±5.57) 55/79 | 66.77 (±5.13) 56/76 | 43.18 (±6.93) 30/54 | 99.54 (±4.87) 91/108 | 101.04 (±4.69) 92/110 | 71.77 (±5.25) 61/84 | 69.9 (±3.57) 63/79 |
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FHC: femoral head coverage; y.o.: years old; AC: anterior coverage; S-AC: superior-anterior coverage; S-PC: superior-posterior coverage; P-SC: posterior-superior coverage; P-IC: posterior-inferior coverage; std. dev: standard deviation.
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