成人髋臼骨计算机三维重建及形态学测量

目的通过三维重建,对髋臼的形态学进行定量研究。方法选取40例成人髋臼标本,通过CT扫描、图像边界处理和定标,利用CAD软件直接拟合出髋臼骨形态,并应用Unigrapics软件集成的工具条对重建髋臼进行形态学的测量。结果髋臼拟合半径(R)为(30.48±2.05)mm;髋臼内侧壁最小厚度(L)为(2.35±1.13)mm;髋臼卵圆窝(Harris窝)深度(D)为(5.71±1.21)mm;横断面髋臼开口缘最大宽度(W)为(63.06±3.75)mm。统计显示,R值与W值相关,但R值、L值、D值之间并不相关。结论正常成人髋臼窝半径(R)与横断面髋臼开口缘最大宽度(W)之间有着明显相关性,髋臼拟合半径(R)、髋臼内侧壁最小厚度(L)、髋臼卵圆窝深度(D)之间并无相关。

Computerized three-dimensional reconstruction and morphologic measurement of adult acetabulum bone structure

OBJECTIVE: To set up three-dimensional reconstruction of acetabulum bone structure from CT scanned image in computer with software of CAD and study quantitatively the morphologic features of the acetabulum. METHODS: Through the process of CT scanning, and edge recording of the CT image, we made use of CAD software and Unigraphics software to reconstruct the 40 normal acetabulum bones for the radius of acetabulum (R), minimum thickness of medial wall of acetabulum (L), depth of Harris fossa (D) and maximum opening rim width in cross-sectional plane (W). RESULTS: The average R was 30.48 +/- 2.05 mm. The average L was 2.35 +/- 1.13 mm. The average D was 5.71 +/- 1.21 mm. The average W was 63.06 +/- 2.05 mm. There was a linear relationship between the R and the W, but no correlation between the R, the L and the D. CONCLUSIONS: There was a significance linear relationship between the R and the W in normal adult acetabulum. However no correlation between the R, the L and the D.