腕关节骨间韧带射频紧缩术对韧带形态及生物力学特性的影响  

Morphologic and biomechanical changes of wrist interosseous ligaments after radiofrequency electrothermal shrinkage

作　　者：熊革[1] 孙燕坤[1] 郑炜[1] 张春林[1] 高新生[1] 俞国泉[1] 

机构地区：[1]北京积水潭医院手外科,100035

出　　处：《中华创伤骨科杂志》2009年第3期247-250,共4页Chinese Journal of Orthopaedic Trauma

基　　金：首都医学科学发展基金（2003-3053）

摘　　要：目的探讨射频紧缩对腕关节骨间韧带解剖形态和生物力学性能的影响。方法以新鲜冷冻成年男性腕关节标本为材料，对其腕骨间韧带进行射频紧缩治疗。分别在射频处理前、后观察和测量舟月掌、背侧韧带（SL-v，SL—d）、月三角背侧韧带（LT）、小多角骨-头状骨背侧韧带（TC）、头钩背侧韧带（CH）以及第2腕掌关节背侧韧带（CMC-2）的长度和厚度，并用生物力学试验机对射频处理后的韧带进行拉伸力学测定，分别记录断裂强度和断裂形变，对所测数据进行统计学分析。结果腕骨间韧带经射频处理后，韧带的长度都有不同程度的缩短，但仅有CH差异有统计学意义（t=-2．898，P=0．016）；韧带均有增厚，其中SL-v，SL—d，LT，CH和CMC-2差异均有统计学意义（t值分别为-7．617，-2．241，-4．559，-3．971，-7．883，P〈0．05）。韧带的断裂强度有所增强，仅SL—d差异有统计学意义（t=-4．481，P=0．001），所有韧带的断裂形变都有显著性地增加。结论经射频处理的正常腕关节骨间韧带基本保持了原有的解剖形态，但韧带的厚度和粘弹性得到了显著地增强。Objective To explore the morphologic and biomechanical changes of the major wrist interosseous ligaments after radiofrequency electrothermal shrinkage. Methods Wrist specimens exploited for the research were taken from 6 frozen fresh male adult cadavers. Radiofrequency electrothermal shrinkage was performed on the scapholunate volar and dorsal ligaments （SL-v, SL-d）, lunotriquetral dorsal ligament （LT）, trapeziocapitate dorsal ligament （TC）, capitohamate dorsal ligament （CH） and the 2nd carpometacarpal ligaments （CMC-2）. The interosseous ligaments were observed and measured before and after the shrinkage. The bone-ligament-bone samples of the above ligaments were prepared for biomeehanical measurements. Ligament extension testing was performed for each bone-ligament-bone sample on a material testing system. The load and length of breakage were measured and statistically analyzed. Results After shrinkage, the lengths of the ligaments were generally shortened, but significant difference only occurred in CH. The thicknesses of SL-v, SL-d, LT, CH and CMC-2 increased significantly. The breakage loads of the ligaments increased, but significant difference only occurred in SL-d. The breakage lengths of all the ligaments increased significantly. Conclusion After radiofrequency electrothermal treatment, the wrist interosseous ligaments can still maintain their anatomical morphology, but their thickness and viscoelasticity are enhanced.

关 键 词：腕关节 韧带 射频 生物力学 

分 类 号：R686[医药卫生—骨科学]