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目的测量华南成人正常胫骨平台后倾角数据,为改进及设计适合中国人(尤其华南人)的膝关节假体和在全膝关节置换术中行合理的胫骨截骨,提供参考和依据。方法对80例华南志愿者膝关节行薄层螺旋CT扫描后,用Mimics软件重建出三维模型,导入Unigraphics NX软件中测量其胫骨内外侧平台的后倾角。结果胫骨内侧平台后倾角,左侧(8.47±3.42)°,右侧(7.84±3.30)°;男性(7.69±2.89)°,女性(8.62±3.74)°;平均(8.16±3.37)°;胫骨外侧平台后倾角,左侧(6.89±3.42)°,右侧(6.82±2.78)°;男性(6.84±2.82)°,女性(6.87±3.01)°;平均(6.85±2.90)°。胫骨内、外侧平台后倾角在不同性别、侧别间无显著性差异(P>0.05),但胫骨内侧平台后倾角明显大于胫骨外侧平台后倾角(P<0.05)。结论华南成人正常胫骨平台后倾角的个体差异较大,均值小于国内其他地区报道和国外大多数同类研究。
Objective To measure the posterior inclination data of normal tibial plateau in South China, and to provide reference and basis for the improvement and design of knee prosthesis suitable for Chinese, especially South China, and rational tibial osteotomy during total knee arthroplasty. Methods The knee joint of 80 South China volunteers was scanned by thin-slice spiral CT. The three-dimensional model was reconstructed with Mimics software and imported into Unigraphics NX software to measure the posterior tilt angle of medial and lateral tibial plateau. Results The posterior tibial plateau posterior tibial (8.47 ± 3.42) ° and right (7.84 ± 3.30) ° men (7.69 ± 2.89 °) and female (8.62 ± 3.74 ° °) The lateral inclination of the lateral platform was 6.89 ± 3.42 on the left and 6.82 ± 2.78 on the right, 6.84 ± 2.82 on the male and 6.87 ± 3.01 on the average. The posterior tibial medial and lateral medial was not significantly different in sex and side (P> 0.05), but the posterior tibial medial was significantly larger than the posterior tibial (P <0.05). Conclusion The individuals of normal adult tibial plateau in South China differ significantly in their posterior inclination. The mean value is smaller than those reported in other parts of China and most of the researches in other countries.