Prevention and treatment of leg length discrepancy following total hip arthroplasty / 中国组织工程研究

ABSTRACT

OBJECTIVE:To explore the reasons for leg length discrepancy following total hip arthroplasty,and to summarize the prevention and treatment of leg length discrepancy after total hip arthroplasty.DATA SOURCESA computer-based online search was conducted in PubMed (www.ncbi.nlm.nih.gov/pubmed) for the English articles published between 2001 and 2008 with keywords "Leg length discrepancy,hip arthroplasty" and Wanfang database (http//www.wanfangdata.com.cn) for the Chinese articles published between 2004 and 2009.DATA SELECTIONTotally 154 literatures were retrieved by computer,including 116 English articles and 38 Chinese articles,through reading title and abstract,112 independent and 51 repeated papers were excluded.The remained 29 literatures were performed further analysis.MAIN OUTCOME MEASURES:Reasons for leg length discrepancy and the prevention and treatment of leg length discrepancy following total hip arthroplasty.RESULTS:The main cause of leg length discrepancy after total hip arthroplasty included redundant neck of femur stump,used longer prothesis neck,diminished femur eccentricity,selected longer neck of femur prothesis,as well as larger movement of cotyloid cavity rotation center.The effective approaches of leg length discrepancy after total hip arthroplasty included careful preoperative planning,intraoperative measurement digital templating and image-guided surgery.It could be the adjusted with heel and shaped bottom for the limbs length which was more than 15 mm after operation,and revision operation maybe applied to patients who had more than 20 mm limbs length or combined with complications.CONCLUSIONS:Leg length discrepancy is one of the common complications following total hip arthroplasty.Along with the development of science and technology,to design individual prothesis and computer-assisted navigation joint can be recover farthest joint function.