胰酶化和鈣化對異體滑膜內(nèi)肌腱與骨隧道愈合作用研究
[Abstract]:Chapter 1 : Compare the difference between the deep flexor tendon , the anterior cruciate ligament , the Achilles tendon and the patellar tendon of the dog .
Objective : To compare the biomechanical and histological differences between the deep flexor tendon , the anterior cruciate ligament , the Achilles tendon and the patellar tendon of the dog .
Methods : The hind legs of 20 dogs were used for the acquisition of deep flexor tendon ( N = 20 ) , anterior cruciate ligament ( N = 20 ) , middle tendon of Achilles tendon ( N = 20 ) and bone - patellar tendon - bone with 1 / 3 patellar tendon ( N = 20 ) . Friction test , indentation experiment , histology and immunohistochemistry were used to assess the difference .
Results : The frictional force of the flexor tendon group ( 47.24 鹵 14.40 mN ) and the anterior cruciate ligament group ( 51.98 鹵 12.10 mN ) was significantly smaller than that of the patellar tendon group ( 144.29 鹵 10.38 mN ) and the Achilles tendon group ( P < 0.01 ) . At the 10th cycle , compared with the patellar tendon group ( 414.29 鹵 10.34 MPa ) , the anterior cruciate ligament group ( 3.54 鹵 0.32MPa ) and the anterior cruciate ligament group ( 4.71 鹵 0.38MPa ) were significantly smaller ( P0.05 ) .
The surface of the tendon and the anterior cruciate ligament is very rough , and the tissue of the tendon is clearly visible . There is a small expression between the extracellular matrix and the collagen fiber .
Conclusion : Deep flexor tendon and anterior cruciate ligament have similar surface friction , and are significantly lower than those of Achilles tendon and patellar tendon . These characteristics are in agreement with the expression of tendon and tendon .
Chapter 2 : Optimization of in vitro calcification process of tendon in synovial membrane
Objective : The main aim of this study is to optimize the condition of tendon calcification , to prepare for the next step of calcification tendon in vivo , and to provide a new idea for promoting the healing of bone tendon .
Methods : 60 toe deep flexor tendons were randomly divided into 5 groups : 1 ) Normal tendon group ( Normal ) ; 2 ) No extraction and non - fetal globulin calcification group ;
3 ) Extraction and non - fetal globulin calcification group ( CaPEXT ) ; 4 ) extraction and presence of fetal globulin calcification group ( CaPEXTFOin ) . The extraction group was slowly stirred in 3 % disodium hydrogen phosphate solution and extracted continuously for 3 days . In addition to using common neutral calcium salt and phosphate solution , the calcification solution also contained fetal globulin . These samples were tested using methods such as histology , scanning electron microscope , indentation test and suture withdrawal test .
Results : There was no significant difference between Ca ~ ( 2 + ) and phosphate ( P < 0.05 ) in CaPEXT arm and CaPEXT arm . However , there was no significant difference between Ca ~ ( 2 + ) and phosphate ( 3.27 鹵 0 . 31MPa ) , CaPEXT ( 3.27 鹵 0 . 31MPa ) , CaPEXT ( 3.27 鹵 0 . 31MPa ) and CaPEXTFOin group ( 3.33 鹵 0 . 18MPa ) .
Chapter 3 : Effect of pancreatin and calcification on the healing of tendon and bone in allogeneic synovium
Objective : The aim of this study was to prepare a kind of allograft synovial tendon which was digested with trypsin and calcified , and implanted into rabbit proximal bone tunnel model to study its effect on the healing of tendon - bone interface .
Methods : Eight toe deep flexor tendons ( FDP ) were used to optimize the trypsinization time . 24 toe deep flexor tendons were randomly divided into control group ( N = 12 ) and trypsinization calcification group ( N = 12 ) .
Results : There was no significant difference between the tendon and non - calcification of the tendon in the normal control group . There was no significant difference between the normal control group ( 5.76 鹵 3.21N ) and the trypsinized calcification group ( 5.21 鹵 4.21N ) .
Conclusion : The technique of trypsin digestion and calcification may play a role in the integration of tendon and bone tunnel , and the formation of cartilage and bone .
【學(xué)位授予單位】:中南大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2014
【分類號】:R686
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