Abstract：Objective To evaluate the characteristics of patellofemal and research progress of the effect of patellar resection thickness changes on contact stress and patella strain in total knee arthroplasty (TKA). Methods The related literatures with “patella thickness, patellofemoral stress, patellar strain” about the realationship between patellar thickness and the biomechanics characteristic of patellofemoral were searched, analyzed, and summarized in the database of PubMed, Springer Link, FMJS and Wanfang data from January 1985 to January 2015. Results The change of patellar thickness can affect the biomechanics characteristic of patellofemoral regardless of whether resurfaceing the patella in TKA. It might aggravate the wear between the components and increase patella strain, which resulted in potential delamination wear debris and possible loosening or antetior knee pain. Increasing the patellar composite 2-4 mm might increase patellofemoral contact stress, which possiblely increased the risks of operation failure. After patellar resection, patella would suffer higher strain in thinner patellar than thicker patellar, which had higher risks of patellar fracture, or resulted in patellofemoral pain. Conclusions We should try to keep the patellar thickness as same as the thickness before the operation, which can keep stable of patellofemoral, release the contact pressure of patellofemoral and the wear of component. The reduction of resection thickness can depress patellar strain after the operation, and reduce the incidence of fracture of patellar and the knee anterior pain.
强硕,郑稼. 人工膝关节置换术中髌骨截骨厚度对髌股关节压力及髌骨应变影响的研究进展[J]. 中华解剖与临床杂志, 2016, 21(6): 576-579.
Qiang Shuo, Zheng Jia. Influence of Patella resection thickness on patellofemoral contact pressure and patellat bone strain in total knee arthroplasty. Chinese Journal of Anatomy and Clinics, 2016, 21(6): 576-579.
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2016, Vol. 21 
