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Abstract：
BACKGROUND: To analyze the curvature characteristics of the talus trochlea in people from northern China in different sex and age groups.
METHODS: Computed tomography scanning data of talus from 61 specimens were collected and constructed as a three-dimensional model by Materialise\'s Interactive Medical Image Control System(MIMICS) software, anteromedial(AM), posteromedial(PM), anterolateral(AL), and posterolateral(PL) edge, anterior edge of medial trochlea, posterior edge of medial trochlea and anterior edge of lateral trochlea were defined according to the anatomical landmarks on trochlear surface. The curvature radii for different areas were measured using the fitting radius and measure module.
RESULTS: There were significant differences among the talus curvatures in the six areas (F = 54.905, P = 0.000), and more trends in the analytical results were as follows: PM > PL > MP > AL > MA > AM. The average PL radius from specimens aged > 38 years old was larger than that from specimens aged < = 38 years (t=-2.303, P = 0.038). The talus curvature of the AM for males was significantly larger than that for females (t = 4.25, P = 0.000), and the curvature of the AL for males was larger than that for females (t = 2.629, P = 0.010). For observers aged < = 38 years, the AM curvature of the right talus in the male group was significantly larger than that in the female group (P < 0.01). In age < = 38years group, the MA curvature of right talus in male was significantly larger than in female group(P < 0.01), fitting radius of talus for male (21.90 ± 1.97 mm) was significantly greater than female of this(19.57 ± 1.26 mm)(t = 6.894, P = 000). The average radius of the talus in the male population was larger than that in the female population.
CONCLUSIONS: There was no significant relationship between age and talus curvature for males and females. The radius of curvature in the posterior area was significantly larger than that in the anterior area. We recommend that this characteristic of the talus trochlea should be considered when designing the talus component in total ankle replacement (TAR).
METHODS: Computed tomography scanning data of talus from 61 specimens were collected and constructed as a three-dimensional model by Materialise\'s Interactive Medical Image Control System(MIMICS) software, anteromedial(AM), posteromedial(PM), anterolateral(AL), and posterolateral(PL) edge, anterior edge of medial trochlea, posterior edge of medial trochlea and anterior edge of lateral trochlea were defined according to the anatomical landmarks on trochlear surface. The curvature radii for different areas were measured using the fitting radius and measure module.
RESULTS: There were significant differences among the talus curvatures in the six areas (F = 54.905, P = 0.000), and more trends in the analytical results were as follows: PM > PL > MP > AL > MA > AM. The average PL radius from specimens aged > 38 years old was larger than that from specimens aged < = 38 years (t=-2.303, P = 0.038). The talus curvature of the AM for males was significantly larger than that for females (t = 4.25, P = 0.000), and the curvature of the AL for males was larger than that for females (t = 2.629, P = 0.010). For observers aged < = 38 years, the AM curvature of the right talus in the male group was significantly larger than that in the female group (P < 0.01). In age < = 38years group, the MA curvature of right talus in male was significantly larger than in female group(P < 0.01), fitting radius of talus for male (21.90 ± 1.97 mm) was significantly greater than female of this(19.57 ± 1.26 mm)(t = 6.894, P = 000). The average radius of the talus in the male population was larger than that in the female population.
CONCLUSIONS: There was no significant relationship between age and talus curvature for males and females. The radius of curvature in the posterior area was significantly larger than that in the anterior area. We recommend that this characteristic of the talus trochlea should be considered when designing the talus component in total ankle replacement (TAR).
摘要：
背景：分析中国北方不同性别和年龄段人群的距骨滑车曲率特征。
方法：利用Materialise的交互式医学图像控制系统（MIMICS）软件，收集61个标本的距骨的计算机断层扫描扫描数据并将其构建为三维模型，前内侧（AM），后内侧（PM），前外侧(AL),和后外侧(PL)边缘，内侧滑车前缘,根据滑车表面的解剖标志定义内侧滑车的后边缘和外侧滑车的前边缘。使用拟合半径和测量模块测量不同区域的曲率半径。
结果：六个区域的距骨曲率之间存在显着差异（F=54.905，P=0.000），分析结果趋势如下:PM>PL>MP>AL>MA>AM。年龄>38岁的标本的平均PL半径大于年龄<=38岁的标本（t=-2.303，P=0.038）。男性AM的距骨曲率明显大于女性(t=4.25,P=0.000),男性AL的曲率大于女性（t=2.629，P=0.010）。对于年龄<=38岁的观察员，男性组右侧距骨的AM曲率明显大于女性组(P<0.01)。在年龄<=38岁组，男性组右侧距骨MA曲率明显大于女性组(P<0.01),男性的距骨拟合半径（21.90±1.97mm）明显大于女性（19.57±1.26mm）（t=6.894，P=000）。男性人群的距骨平均半径大于女性人群。
结论：男性和女性的年龄和距骨曲率之间没有显著关系。后部区域的曲率半径明显大于前部区域的曲率半径。我们建议在设计全踝关节置换（TAR）的距骨组件时应考虑距骨滑车的这一特征。
方法：利用Materialise的交互式医学图像控制系统（MIMICS）软件，收集61个标本的距骨的计算机断层扫描扫描数据并将其构建为三维模型，前内侧（AM），后内侧（PM），前外侧(AL),和后外侧(PL)边缘，内侧滑车前缘,根据滑车表面的解剖标志定义内侧滑车的后边缘和外侧滑车的前边缘。使用拟合半径和测量模块测量不同区域的曲率半径。
结果：六个区域的距骨曲率之间存在显着差异（F=54.905，P=0.000），分析结果趋势如下:PM>PL>MP>AL>MA>AM。年龄>38岁的标本的平均PL半径大于年龄<=38岁的标本（t=-2.303，P=0.038）。男性AM的距骨曲率明显大于女性(t=4.25,P=0.000),男性AL的曲率大于女性（t=2.629，P=0.010）。对于年龄<=38岁的观察员，男性组右侧距骨的AM曲率明显大于女性组(P<0.01)。在年龄<=38岁组，男性组右侧距骨MA曲率明显大于女性组(P<0.01),男性的距骨拟合半径（21.90±1.97mm）明显大于女性（19.57±1.26mm）（t=6.894，P=000）。男性人群的距骨平均半径大于女性人群。
结论：男性和女性的年龄和距骨曲率之间没有显著关系。后部区域的曲率半径明显大于前部区域的曲率半径。我们建议在设计全踝关节置换（TAR）的距骨组件时应考虑距骨滑车的这一特征。
