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A prospective observational study on comparing the outcome of patellar resurfacing and patellar nonresurfacing total knee arthroplasty in south Indian population

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Original Article

Author Details : Prashant Kumar Mishra, Avinash Gundavarapu*, Vishal Singh, Santhosh Kumar M

Volume : 7, Issue : 2, Year : 2021

Article Page : 106-112

https://doi.org/10.18231/j.ijos.2021.017

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Abstract

Introduction: Total Knee Arthroplasty (TKA) has been a very successful surgery in relieving pain and restoring function in osteoarthritis. Conflicting evidence in literature exists regarding the merits of patellar resurfacing during TKA over non-resurfacing. Our aim is to evaluate and compare the difference between patellar resurfaced group and non-resurfaced group in primary TKA.
Materials and Methods: This prospective obsevational study was initiated in May 2016 conducted till April 2018 (2 years) in Yashoda Superspeciality Hospital, Hyderabad. At least 14 mm of patella was ensured to be retained after patellar cut. A total of 40 patients were allocated to receive (n=20) or not to receive patellar resurfacing (n=20) during primary TKA. The data was analyzed statistically using the Student t test. Overall patient satisfaction was recorded using the SF-36 score.
Results: Of the 40 patients, 67.5% females and 32.5 % males underwent TKA. Among those who underwent resurfacement, 40% were males. 75% among the non-resurfaced group were females. Right knee was operated on 37.5% of cases. Mean operative time being 103.9 and 122.5 minutes in nonresurfaced and resurfaced cases respectively. Mean patellar thickness was 22.1mm in nonresurfaced and 23.6mm in resurfaced group. The difference in VAS score, modified HSS score, KSS scores between the two groups were statistically insignificant with p-values of 0.230, 0.0214, 0.2513 respectively at the end of two year,
but there was significant reduction of anterior knee pain in the resurfaced with p-value < 0>.
Conclusion: The functional outcome was not affected by whether the patella was resurfaced or nonresurfaced. There was no significant difference between the two groups with respect to the prevalence of knee-related readmission, or of subsequent patella-related surgery or patients overall satisfaction. We recommend selective patellar resurfacing at the time of primary total knee replacement.

Keywords: TKA, Patellar resurfacement, Non-resurfacement, HSS score, KSS score.

How to cite : Mishra P K , Gundavarapu A , Singh V , Santhosh Kumar M, A prospective observational study on comparing the outcome of patellar resurfacing and patellar nonresurfacing total knee arthroplasty in south Indian population. Indian J Orthop Surg 2021;7(2):106-112

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