The early clinic analysis of patellar resurfacing or nonresurfacing in total knee arthroplasty / 中华骨科杂志

ABSTRACT

Objective To evaluate the early clinic effects and anterior knee pain after total knee arthroplasty with or without patellar resurfacing.Methods From June 2010 to June 2011,100 patients who underwent TKA in our department were covered in this study,they were randomly divided two groupsresurfacing of the patellar (42 patients,50 knee) and nonresurfacing of the patellar (57 patients,66 knee).They were followed up at 6th month and 12th month.Comparison was performed with the West Ontario and McMaster Universities score (WOMAC) and Knee Surgery Society (KSS) score system,anterior knee pain visual analogue scale (VAS) score between two groups.Results Anterior knee pain VAS score had significant improvement postoperation in resurfacing groups and nonresurfacing group.But there was no statistical difference between two groups.In two groups,WOMAC scores at 6th month were 28.8±11.2 and 18.6±7.2,20.7±6.2 and 16.0±5.5 at 12th month.KSS scores at 6th month were 87.0±8.3 and 90.9±7.2,84.2±10.6 and 88.8±9.2 at 12th month.And the KSS function scores at 6th month were 86.6±21.6 and 84.9±16.5,85.2±16.4 and 91.0±10.0 at 12th month and had no statistical difference between two groups.In sunrise views (Bending 30 degrees),the curvature tolerance between patella and femoral trochlea was well at two timestamp postoperation without instability and dislocation.No revision of TKA and no re-resurfacing of patella one year after TKA.Conclusion TKA is very effective for relief of knee pain and improvement of joint function for OA and RA.Patella resurfacing and nonresurfacing have not significant difference during one year and two ways,and have the same good result in function and anterior knee pain improvement.