The Outerbridge Classification Predicts the Need for Patellar Resurfacing in TKA

Rodríguez-Merchán, E. Carlos; Gómez-Cardero, Primitivo

doi:10.1007/s11999-009-1123-0

Cited by 73 publications

(60 citation statements)

References 28 publications

(22 reference statements)

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“…We know of only one other prospective randomized study that addressed selective patellar resurfacing [46]. These authors stratified patients by Outerbridge classification.…”

Section: Discussionmentioning

confidence: 99%

Selective Patellar Resurfacing in Total Knee Arthroplasty: A Prospective, Randomized, Double-Blind Study

Roberts¹,

Hayes²,

Tate

et al. 2015

The Journal of Arthroplasty

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“…We know of only one other prospective randomized study that addressed selective patellar resurfacing [46]. These authors stratified patients by Outerbridge classification.…”

Section: Discussionmentioning

confidence: 99%

Selective Patellar Resurfacing in Total Knee Arthroplasty: A Prospective, Randomized, Double-Blind Study

Roberts¹,

Hayes²,

Tate

et al. 2015

The Journal of Arthroplasty

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“…We feel that our study contributes important evidence that the degree of patellar involvement can be used to assist in the decision to perform patellar resurfacing during TKA as shown by the study carried by Carlos et al 13 Prospective nature of study and randomization strengthens the study; however it has some limitations like smaller sample size and shorter follow up period. Also, this study does not include other possible confounding variables responsible for patellofemoral problems in TKR.…”

Section: Discussionmentioning

confidence: 76%

“…13 They carried out patellar resurfacing depending on the Outerbridge classification of the patella at the time of surgery. Patients with Outerbridge Grades I, II, and III formed Group A, whereas patients with Grade IV formed Group B.…”

Section: Discussionmentioning

confidence: 99%

Outerbridge classification as a predictor for the need of patellar resurfacement in total knee arthroplasty: a prospective study

Puri

Kashid²,

Shinde

et al. 2017

Int J Res Orthop

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Background: Residual anterior knee pain after total knee arthroplasty is one of the common causes of early revision surgery in form of patellar resurfacing and even resurfacing the patella in these circumstances may not relieve the symptoms. So, the decision to perform patellar resurfacing during total knee arthroplasty to prevent anterior knee pain remains controversial. The purpose of this study is to determine if the outerbridge classification can predict the need for Patellar resurfacing as part of total knee arthroplasty.Methods: 100 patients with advanced osteoarthritis of knee fulfilling the inclusion and exclusion criteria were randomized into two groups of 50 patients each. In group A-patellar resurfacing done and in group B-patella was not resurfaced while carrying out TKR. Each patient was assessed intraoperatively and his/her patella classified as per Outerbridge classification. Patients were followed-up at 03, 06 and 12 months postoperatively and assessed by modified hospital for special surgery (HSS) knee scores.Results: In case of Outerbridge class III group there is a statistically significant difference (p value -0.002) in HSS score at 03 months, which becomes highly significant at 06 months (p value -0.001) and 01 year (p value <0.001). Similarly, there is statistically significant difference in HSS score (p value- 0.001) in Outerbridge class IV group at 03 months, 06 months and 01 year.Conclusions: Patellar resurfacing in patients undergoing total knee arthroplasty with patella in Outerbridge class III and IV can be safely carried out to further improve the functional outcome. There is no distinct advantage of resurfacing patella in Outerbridge class I and II in terms of functional gain. Thus, Outerbridge classification for patella can effectively guide us whether to resurface patella or not in patients undergoing total knee arthroplasty.

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“…The authors are aware of only one study (21), that correlated pain and revision rates following TKA with preoperative characteristics of the patella, which proved that patellar cartilage erosion influences outcomes. The study did not take patellar morphology, congruence or pressures into consideration, but clearly concludes that what matters is the state of patellar cartilage that can influence outcomes.…”

Section: Discussionmentioning

confidence: 99%

“…Recent in vitro studies demonstrated that retro-patellar pressures are influenced by trochlear geometry, as well as the morphology of the native patella, or the shape of the patellar button (16)(17)(18)20). Furthermore, when the patella is not resurfaced, the extent of patellar cartilage erosion could affect the incidence of pain and revision (21).…”

Section: Introductionmentioning

confidence: 99%

Does patellofemoral congruence following total knee arthroplasty correlate with pain or function? Intraoperative arthroscopic assessment of 30 cases

Senioris

Saffarini²,

Rahali

et al. 2016

Ann. Transl. Med.

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The Outerbridge Classification Predicts the Need for Patellar Resurfacing in TKA

Cited by 73 publications

References 28 publications

Selective Patellar Resurfacing in Total Knee Arthroplasty: A Prospective, Randomized, Double-Blind Study

Selective Patellar Resurfacing in Total Knee Arthroplasty: A Prospective, Randomized, Double-Blind Study

Outerbridge classification as a predictor for the need of patellar resurfacement in total knee arthroplasty: a prospective study

Does patellofemoral congruence following total knee arthroplasty correlate with pain or function? Intraoperative arthroscopic assessment of 30 cases

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