EVALUATION OF MECHANICAL PROPERTY OF FRACTURE HEALING USING NON-DESTRUCTIVE TESTING

使用无损检测评估骨折愈合的机械性能

• 批准号: 09671482
• 负责人: MORIIZUMI Tetsuji
• 金额: $ 2.24万
• 依托单位: SHINSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09671482/
• 关键词: FRACTURE HEALING; NON-DESTRUCTIVE TESTING; SCANNING ACOUSTIC MICROSCOPE; MECHANICAL PROPERTY; ACOUSTIC ANISOTROPY; 骨組織; 骨単位; 音速; 骨折治癒

Acoustic anisotropy of bone was using the scanning acoustic microscope. Both fractured and sound tibias were harvested from four beagle dogs 12 weeks postoperatively. Three kinds of measurement mode were observed : C-mode imaging, XZ-mode imaging and measurement of ultrasound velocity. Ultrasound velocity of longitudinal elastic wave was measured in the directions of 0 and 90 degrees by rotating a slit lens attached to an ultrasound oscillator. Anisotropy, the difference of ultrasound velocity both in the parallel and rectangular directions to the long axis of the cortical bone, was studied on the osteons in the cortical bones of normal tibias and on the healing site of the fractured tibias. The velocity in the inner area near the central canal of the osteon was constantly lower than that in the outer area both in the cross section and the longitudinal one. The difference of the velocity between the two areas ranged from 200 to 300m/sec. There was no acoustic anisotropy in cross-sectional osteons. Meanwhile, in the osteons longitudinally sectioned, the velocity was constantly higher in the direction parallel to the long axis of the central canal than in the direction rectangular to the axis. The difference of the velocity between the two directions ranged from 800 to 900m/sec. In the healing site of the fractured tibias the callus area showed little anisotropy, although the original cortical area maintained its anisotropy.

用扫描声显微镜观察骨的声学各向异性。术后12周切除4只比格犬的骨折胫骨和完好胫骨。观察到三种测量模式：c型成像、xz型成像和超声速度测量。通过与超声振荡器连接的狭缝透镜旋转，测量了纵向弹性波在0度和90度方向上的声速。研究了正常胫骨皮质骨和骨折胫骨愈合部位骨的各向异性，即超声速度在骨皮质长轴平行方向和矩形方向上的差异。无论在横截面上还是纵截面上，靠近骨中央管的内区速度都不断低于外区速度。两个区域的速度差在200 ~ 300米/秒之间。横切面骨的声学不存在各向异性。同时，在骨纵切面中，平行于中央管长轴方向的速度不断高于与中央管长轴方向的速度。两个方向的速度差在800 ~ 900米/秒之间。在胫骨骨折愈合部位，尽管原始皮质区保持其各向异性，但骨痂区表现出很少的各向异性。

项目成果

Nomura A,Yoshida I,Nakatsuchi Y,Tsuchikane A: "Quantitative evaluation of fracture healing process of human bones with an impulse response method." Biophysics. 216. 62-67 (1998)

Nomura A，Yoshida I，Nakatsuchi Y，Tsuchikane A：“用脉冲响应方法定量评估人体骨骼的骨折愈合过程。”

Nakatsuchi Y,Kobayashi M,Nomura A,Yoshida I,Tsuchikane A,Moroizumi T,Ishikawa K: "Acoustic anisotropy of normal and healing cortical bone." J Jpn Soci Orthop Biomech. 19 (in print). (1998)

Nakatsuchi Y、Kobayashi M、Nomura A、Yoshida I、Tsuchikane A、Moroizumi T、Ishikawa K：“正常和愈合皮质骨的声学各向异性。”

Yoshida I,Nomura A,Nakatsuchi Y,Tsuchikane A,Takahashi S: "Evaluation of mechanical properties of femoral neck by vibrational analysis." J Jpn Soci Orthop Biomech. 18. 253-257 (1997)

Yoshida I、Nomura A、Nakatsuchi Y、Tsuchikane A、Takahashi S：“通过振动分析评估股骨颈的机械性能。”

野村彰夫ほか: "中学生および高校生におけるスポーツの有無と踵骨の超音波パラメータとの相関" 日本臨床バイオメカニクス学会誌. 18. 499-504 (1997)

Akio Nomura 等人：“初中生和高中生跟骨的运动与超声参数之间的相关性”日本临床生物力学学会杂志 18. 499-504 (1997)。

吉田 郁夫 ほか: "ねじれ振動とヒト大腿骨頚部の力学的特性との関係" 日本臨床バイオメカニクス学会誌. 19. 297-301 (1998)

Ikuo Yoshida 等：“扭转振动与人体股骨颈机械特性的关系”日本临床生物力学学会杂志 19. 297-301 (1998)。