摘要
目的:研究肱骨尤其是肱骨远端的特殊解剖形态,命名新的解削名词,准确描述其结构特点,促进肱骨内固定器材的研究和改进。方法:选用青壮年不成对的肱骨12根,用3DCT(Three Dimensoinal Computed Tomography)进行扫描并重建,对骨表面特性及髓腔进行全方位的测量。结果:肱骨干大小结节以下大致呈圆柱体,其远段距髁部6.54±0.63cm(前屈距)处有向前的弯曲,称前屈角,为13.98±0.48度。髁上邪逐渐变薄向内外扩伸形成内上髁及外上髁,而被鹰嘴窝和冠突窝分隔形成的两支称内上髁支和外上髁支,其中内上髁支宽:1.46±0.10cm,厚:1.38±0.10an,外上髁支宽:2.07±0.09cra,厚:1.58±0.7cm,与纵轴的夹角称内上髁角和外上髁角,分别为:28.29±0.57度和34.15±0.65度。髓腔于髁上变宽薄,逐渐闭锁。结论:肱骨干髓腔无明显狭部,上端略大,向下端逐渐减小,末端欠径减小,冠径逐渐增大,不向内外上髁支内延伸。髁部前屈角,前屈距,内上髁角以及外上髁角等测量值变异大,具有相当的稳定性。
Objective: To study the special configuration of humerus and distal humerus and ro depict and ame it with new anatomy words in order to improve humerus internal fixation. Methods: The angle and length of the bones and the marrow cavities of 12 fresh humerus which were secanned by three dimensional computed tomography and reconstructed were measured. Results:The forward flexure of distal humerus was named forward flexure angle, which was 13. 98 ± 0. 48°. The forward flexure distance was 6. 52cm ± 0. 63cm.
Ramus epicondylus medians and Ramus epicondylus lateralis in the distal ends of the humerus were separated by coronal fossa and olecranon fossa, forming two angles between the two ram us and the middle line of humerus shaft medialis.One Epicondylus angle was 28. 29 ±0. 57°, the other was 34. 15 ± 0.65°. Conclusion: The marrow- cavity of humerus gets narrower the from the proximal to distal part but the coronall gets bigger and sagittally smailer in the ends, the cavity of humerus doesn't outspread to Ramus epicondylus medialis and Ramus epicondylus laterally.
出处
《中华解剖与临床杂志》
2001年第1期22-24,共3页
Chinese Journal of Anatomy and Clinics
