关键词: 髌下脂肪垫, 血供, 膝关节置换术, 应用解剖

Abstract:

Objective　The purpose of this study is to provide an anatomic evidence of why and how to protect the blood supply of infrapatellar fat pad(IFP) in total knee arthroplasty(TKA).　Mothods　20 embalmed adult cadaveric knee and 2 fresh ones underwent micro-anatomy to observe the composition，route and distribution of their IFP vascular network.　Result　The lateral part of IFP vascular network was formed by inferior lateral genicular artery and the descending branches of superior lateral genicular artery, and the medial part of it was formed by the ascending branches of inferior medial genicular artery and the branches of descending genicular artery. All the arteries and branches connected to each other to build a "concentrated area" which ranged in 5mm to both side of patella, 14mm below the lower end of patella and 10mm behind PL and nourish the lower end of patella, the back of patellar ligament(PL) and the synovial membrane of the whole IFP. Conclusion　IFP should be protected in TKA, because of its nourishing function, especially the "concentrated area".

Key words: Infrapatellar fat pad, Blood supply, Total knee arthroplasty(TKA), Applied anatomy