■关于半月板形态在骨骼生长和成熟过程中的发育及其随后与相应骨解剖结构的关系知之甚少。
■(1)男孩与女孩相比,半月板的尺寸和形态在骨骼生长和成熟过程中以不同的方式随年龄变化。(2)内侧和外侧半月板的形态特征与内侧和外侧股骨髁的曲率有关。
■横断面研究;证据水平,3.
■在269个独特膝盖的磁共振成像扫描上测量了内侧和外侧半月板的解剖特征(年龄,3-18岁;51%为女性),没有受伤史,先天性或生长相关骨骼疾病,或者骨畸形。将基于形态的测量值归一化为胫骨平台宽度或确定为半月板尺寸的比率。用线性回归分析年龄与解剖结构之间的关系。使用Holm-sysídák事后方法进行的双向方差分析用于比较不同年龄组性别之间的解剖结构。校正年龄和性别后,采用线性回归方法评价股骨髁曲率半径与各室半月板形态的关系。
■半月板长度,宽度,喇叭距离,平均横截面积(CSA),男女平均身高随年龄增加而增加(R2>0.1;P<.001)。半月板形态的年龄相关变化可见于归一化长度,宽度,喇叭距离,和平均高度;宽度与长度比;角距离与长度比(仅外侧半月板);归一化平均CSA(女孩外侧半月板除外);和平均尖端角度(R2>0.04;P<.02)。还发现了基于性别的差异,在整个发育过程中(P<.03)和大小差异(长度,宽度,和平均CSA)在后期发展中(P<0.01)。在调整了年龄和性别后,内髁曲率半径与归一化宽度之间存在显著相关性,宽长比,喇叭距离,喇叭距离长度比,平均CSA,内侧半月板的平均高度(P≤.041)以及外侧髁曲率半径和归一化长度之间,平均身高,和外侧半月板的平均尖端角(P≤.004)。
■半月板尺寸和形态的年龄相关变化,最值得注意的是半月板几何形状的不均匀生长模式,发生在骨骼生长和成熟过程中,男孩和女孩的趋势不同。
UNASSIGNED: Little is known on how meniscal morphology develops during skeletal growth and maturation and its subsequent relationship with the corresponding bony anatomy.
UNASSIGNED: (1) Meniscal dimensions and morphology would change by age during skeletal growth and maturation in different ways in boys compared with girls. (2) Morphological features of the medial and lateral menisci would correlate to medial and lateral femoral condyle curvatures.
UNASSIGNED: Cross-sectional study; Level of evidence, 3.
UNASSIGNED: Anatomic features of the medial and lateral menisci were measured on magnetic resonance imaging scans from 269 unique knees (age, 3-18 years; 51% female) with no prior history of injury, congenital or growth-related skeletal disorders, or bony deformities. Morphological shape-based measurements were normalized to tibial plateau width or determined as ratios of meniscal dimensions. The association between age and anatomy was analyzed with linear regression. Two-way analysis of variance with the Holm-Šídák post hoc method was used to compare anatomy between sexes in different age groups. Linear regression was used to evaluate the relationship between femoral condyle curvature radius and meniscal morphology in each compartment after adjusting for age and sex.
UNASSIGNED: Meniscal length, width, horn distance, mean cross-sectional area (CSA), and mean height increased with age in both sexes (R2 > 0.1; P < .001). Age-related changes in meniscal morphology were seen in normalized length, width, horn distance, and mean height; width-to-length ratio; horn distance-to-length ratio (lateral meniscus only); normalized mean CSA (except lateral meniscus in girls); and mean tip angle (R2 > 0.04; P < .02). Sex-based differences were also found, with some morphological differences (normalized length and height) throughout development (P < .03) and size differences (length, width, and mean CSA) in later development (P < .01). After adjusting for age and sex, there were significant correlations between medial condyle curvature radius and normalized width, width-to-length ratio, horn distance, horn distance-to-length ratio, mean CSA, and mean height of the medial meniscus (P≤ .041) and between lateral condyle curvature radius and normalized length, mean height, and mean tip angle of the lateral meniscus (P≤ .004).
UNASSIGNED: Age-related changes in meniscal dimensions and morphology, most notably a nonuniform growth pattern in meniscal geometry, occurred during skeletal growth and maturation, with different trends in boys than in girls.