Feng Wang,Quan-Bing Zhang,Yun Zhou,Shuang Chen,Peng-Peng Huang,Yi Liu,Yuan-Hong Xu.[J].Chin J Traumatol,2019,22(2):93-98. [doi]
The mechanisms and treatments of muscular pathological changes in immobilization-induced joint contracture: A literature review
  
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KeyWord: Immobilization-induced joint contractureDisuse skeletal muscle atrophySkeletal muscle fibrosisTreatment
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Feng Wang Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, 230601, China 
Quan-Bing Zhang Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, 230601, China 
Yun Zhou Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, 230601, China 
Shuang Chen Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, 230601, China 
Peng-Peng Huang Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, 230601, China 
Yi Liu Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, 230601, China 
Yuan-Hong Xu Department of Clinical Laboratory, The First Hospital of Anhui Medical University, Hefei, 230601, China 
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Abstract:
      The clinical treatment of joint contracture due to immobilization remains difficult. The pathological changes of muscle tissue caused by immobilization-induced joint contracture include disuse skeletal muscle atrophy and skeletal muscle tissue fibrosis. The proteolytic pathways involved in disuse muscle atrophy include the ubiquitin-proteasome-dependent pathway, caspase system pathway, matrix metalloproteinase pathway, Ca2þ-dependent pathway and autophagy-lysosomal pathway. The important biological processes involved in skeletal muscle fibrosis include intermuscular connective tissue thickening caused by transforming growth factor-b1 and an anaerobic environment within the skeletal muscle leading to the induction of hypoxia-inducible factor-1a. This article reviews the progress made in understanding the pathological processes involved in immobilization-induced muscle contracture and the currently available treatments. Understanding the mechanisms involved in immobilization-induced contracture of muscle tissue should facilitate the development of more effective treatment measures for the different mechanisms in the future.
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