Hip arthroplasty in patients with a history of paediatric hip disorders presents a significant challenge for orthopaedic surgeons.These patients are typically younger and have greater functional demands.Therefore,achi...Hip arthroplasty in patients with a history of paediatric hip disorders presents a significant challenge for orthopaedic surgeons.These patients are typically younger and have greater functional demands.Therefore,achieving optimal biomechanical conditions is crucial,involving placement of the acetabulum at the ideal centre of rotation and securing a stable femoral component with good offset to preserve abductor muscle function and restore leg length.The altered anatomy in these cases makes total hip arthroplasty more complex,necessitating thorough preoperative imaging and an individualised surgical approach.Various techniques may be employed to optimise biomechanical outcomes.We propose a modified lateral hip approach,offering exceptional visualisation of the acetabulum and femur while preserving the continuity of the abductor muscles without requiring trochanteric osteotomy.To achieve the most biomechanically advantageous acetabular position,cotyloplasty is our preferred method.展开更多
目的:观察膝关节骨性关节炎(KOA)患者髋外展肌等速肌力变化。方法:采用Biodex system 4对23例双侧KOA患者及14例正常对照者进行角速度为30°/s及60°/s的髋外展肌等速肌力测试,分别采用配对样本t检验及独立样本t检验比较KOA患...目的:观察膝关节骨性关节炎(KOA)患者髋外展肌等速肌力变化。方法:采用Biodex system 4对23例双侧KOA患者及14例正常对照者进行角速度为30°/s及60°/s的髋外展肌等速肌力测试,分别采用配对样本t检验及独立样本t检验比较KOA患者主患侧与对侧、KOA组主患侧与正常对照组髋外展肌等速肌力。结果:KOA组30°/s峰力矩主患侧显著小于对侧(1.15 vs 1.22Nm/kg,P=0.039),峰力矩均值、单次最佳做功主患侧亦显著小于对侧(P<0.05),总功、平均功率无显著性差异(P>0.05);60°/s峰力矩主患侧显著小于对侧(1.03 vs1.13Nm/kg,P=0.006),峰力矩均值、单次最佳做功、总功、平均功率主患侧亦显著小于对侧(P<0.05)。髋外展肌30°/s峰力矩均值、平均功率、单次最佳做功及总功KOA组主患侧显著小于正常对照组(P≤0.05);60°/s时峰力矩KOA组显著小于正常对照组(1.03 vs 1.25Nm/Kg,P=0.032),余观察指标两组无显著性差异(P>0.05)。结论:膝骨关节炎患者主患侧髋外展肌等速肌力峰力矩、做功能力、运动效率较对侧减弱。膝骨关节炎患者髋外展肌等速肌力峰力矩、做功能力、运动效率较正常对照组减弱。展开更多
文摘Hip arthroplasty in patients with a history of paediatric hip disorders presents a significant challenge for orthopaedic surgeons.These patients are typically younger and have greater functional demands.Therefore,achieving optimal biomechanical conditions is crucial,involving placement of the acetabulum at the ideal centre of rotation and securing a stable femoral component with good offset to preserve abductor muscle function and restore leg length.The altered anatomy in these cases makes total hip arthroplasty more complex,necessitating thorough preoperative imaging and an individualised surgical approach.Various techniques may be employed to optimise biomechanical outcomes.We propose a modified lateral hip approach,offering exceptional visualisation of the acetabulum and femur while preserving the continuity of the abductor muscles without requiring trochanteric osteotomy.To achieve the most biomechanically advantageous acetabular position,cotyloplasty is our preferred method.
文摘目的:观察膝关节骨性关节炎(KOA)患者髋外展肌等速肌力变化。方法:采用Biodex system 4对23例双侧KOA患者及14例正常对照者进行角速度为30°/s及60°/s的髋外展肌等速肌力测试,分别采用配对样本t检验及独立样本t检验比较KOA患者主患侧与对侧、KOA组主患侧与正常对照组髋外展肌等速肌力。结果:KOA组30°/s峰力矩主患侧显著小于对侧(1.15 vs 1.22Nm/kg,P=0.039),峰力矩均值、单次最佳做功主患侧亦显著小于对侧(P<0.05),总功、平均功率无显著性差异(P>0.05);60°/s峰力矩主患侧显著小于对侧(1.03 vs1.13Nm/kg,P=0.006),峰力矩均值、单次最佳做功、总功、平均功率主患侧亦显著小于对侧(P<0.05)。髋外展肌30°/s峰力矩均值、平均功率、单次最佳做功及总功KOA组主患侧显著小于正常对照组(P≤0.05);60°/s时峰力矩KOA组显著小于正常对照组(1.03 vs 1.25Nm/Kg,P=0.032),余观察指标两组无显著性差异(P>0.05)。结论:膝骨关节炎患者主患侧髋外展肌等速肌力峰力矩、做功能力、运动效率较对侧减弱。膝骨关节炎患者髋外展肌等速肌力峰力矩、做功能力、运动效率较正常对照组减弱。
