摘要
目的 探讨弱CO2 激光和红外线照射对骨折愈合的影响。方法 将实验性骨折家兔分为 3组 ,A组 :接受 1 50mW /cm2 的CO2 激光照射 ;B组 :接受普通红外线照射 ;C组 (对照组 ) :接受 0mW /cm2的CO2 激光照射。采用病理组织学观察骨折区骨痂和血管形成情况 ;X线片观察骨愈合级别 ;化学回滴定法测量骨痂中钙含量。结果 ①A组较B组及C组骨折后血肿吸收加快 ,毛细血管更为丰富 ,骨小梁形成明显加速 ,以膜性成骨为主 ;②X线显示同时间骨折愈合 ,A组较B组、C组良好 ,达Ⅲ、Ⅳ级愈合者非常显著的增高 (P <0 .0 1 ) ;③同时间骨痂中胶原和钙的含量 ,A组较B组、C组有明显增高 (P <0 .0 1 )。结论 弱CO2 激光照射能更好的改善局部血液循环和微环境 ,调节细胞功能 ,增强成骨能力 ,加速骨胶原的形成和钙盐的沉积 ,从而加速骨折的修复过程 ,促进骨折愈合。
Objective To investigate the influence of low level CO 2 laser and infrared ray irradiation on bone fracture healing process.Methods Fractured rabbits were divided into three groups: group A: 150 mW/cm 2 CO 2 laser; Group B: infrared ray and Group C (control group): 0 mW/cm 2 CO 2 laser. Callus formation and angiogenesis were evaluated by histopathology, grade of bone healing by X ray films and collagen calcium contents in callus by chemical method respectively. Results ① Group A had an obvious increase in vascularization, more rapid absorption of haematoma and faster formation of osseous tissue with obvious intramembraneous ossification. ② The roentgenogram in the same period of time proved group A had significant better bone fracture healing process than group B and group C(P< 0.01 ). ③ The contents of collagen and calcium were significantly higher in group A than in group B and group C(P< 0.01 ). Conclusion Low level CO 2 laser irradiation can improve the circulation of blood, stimulate the activity of osteoblasts and chondroblasts and promote the synthesis of collagen, and deposition of calcium in callus. The low level CO 2 laser irradiation can facilitate fracture repair and accelerate the healing process.
出处
《中华物理医学与康复杂志》
CAS
CSCD
北大核心
2001年第4期215-217,共3页
Chinese Journal of Physical Medicine and Rehabilitation
关键词
激光
红外线
骨折愈合
治疗
Laser
Infrared ray
Bone fracture healing
