Table 1.
Micromineralization and packet score data and P-values in immature (a) and mature (b) bones at their 50% location.
| Dorsal | Plantar | P-value | |
|---|---|---|---|
| (a) Immature bones (n = 7) | |||
| BSE mineral content (WMGL) | 135.5 (3.2) | 127.1 (3.5) | 0.002 |
| Mineral heterogeneity (FWHM of BMDD) | 4.8 (0.1) | 5.1 (0.2) | 0.01 |
| Skewness of BMDD | 1.16 (0.0) | 1.05 (0.0) | 0.007 |
| Kurtosis of BMDD | −0.11 (0.1) | −0.36 (0.1) | 0.02 |
| Packet prevalence | 46.2 (3.6)* | 44.9 (2.8) | ns |
| (b) Mature bones (n = 7) | |||
| BSE mineral content (WMGL) | 137.8 (3.7) | 128.9 (3.3) | < 0.001 |
| Mineral heterogeneity (FWHM of BMDD) | 4.7 (0.1) | 4.8 (0.1) | ns |
| Skewness of BMDD | 1.17 (0.0) | 1.13 (0.0) | ns |
| Kurtosis of BMDD | −0.10 (0.0) | −0.20 (0.1) | ns |
| Packet prevalence | 34.6 (2.4) * | 48.3 (3.0) | 0.006 |
*
Significantly different (P < 0.05) from other age group in comparison with the same tract (i.e. dorsal vs. dorsal comparison; or plantar vs. plantar comparison).
ns = non-significant, where all P values are > 0.2.
Packet prevalence = no. packets mm−2 of bone.
BMDD, bone mineral density distribution; BSE, backscattered electron; FWHM, full-width half-maximum; WMGL, weighted mean gray level.