【摘要】 关于Ｈｅ－Ｎｅ激光促进骨折愈合的研究报道尚少。骨折愈合过程长，而局部血液循环重建至为重要，但是对于激光对骨折愈合过程中的血管变化影响研究报道更少。因此本文进一步观察了Ｈｅ－Ｎｅ激光对骨折愈合的组织学变化及其骨折愈合过程中血管的变化。更多还原

【Abstract】 He-Ne laser was adopted to radiate on the fractured areas of the mandible of the rabbits. The dose of He-Ne laser was 3.87J/cm.The rabbits were sacrificed respectively in 3.5.8.15.22.28 days after operation. The left side of the mandible was treated with laser radiation as experimental group, and the right no laser radiation as control.It is known that the He-Ne laser radiation affected the fracture healing process.The formation of the granulation tissues and the various calluses in the experimental group was one week earlier than that of control group. The vascular changes in the healing process of fractured area were as follows: Early stage (1 week) The blood vessels surrounding the fractured area were quite distended and turtuous. Midstage (1-3 weeks).Abnormal dense mesh of dilated vessels were found in the fractured area. There were many dilated vascular anastomoses between the fractured and surrounding soft tissues.Later stage (after 3 weeks): The number of vessels in this area gradually decreased. The reconstructive process of blood vessels in experimentasl group was more rapid than that of control group. It’s suggestd that He-Ne laser radiation could promote the bone healing.更多还原