Abram, Simon G F

Beard, David J

Judge, Andrew

Palmer, Antony J R

Price, Andrew J

English

OBJECTIVEThe purpose of this study was to analyse the rate of knee arthroplasty in the population of patients with a history of arthroscopic chondroplasty of the knee, in England, over ten years, with comparison to general population data for patients without a history of chondroplasty.DESIGNRetrospective cohort study.SETTINGEnglish hospital episode statistics (HES) data.PARTICIPANTS AND INTERVENTIONSPatients undergoing arthroscopic chondroplasty in England between 2007/08 and 2016/17 were identified. Patients undergoing previous arthroscopic knee surgery or simultaneous cruciate ligament reconstruction or microfracture in the same knee were excluded.OUTCOMESPatients subsequently undergoing a knee arthroplasty in the same knee were identified and mortalityadjusted survival analysis was performed (survival without undergoing knee arthroplasty). A Cox proportional hazards model was used to identify factors associated with knee arthroplasty. Relative risk of knee arthroplasty (total or partial) in comparison to the general population was determined.RESULTSThrough 2007-17, 157,730 eligible chondroplasty patients were identified. Within one-year, 5.91% (7984/135197; 95% CI 5.78 to 6.03) underwent knee arthroplasty and 14.22% (8145/57267; 95% CI 13.94 to 14.51) within five-years. Patients aged over 30 years with a history of chondroplasty were 17.32 times (risk ratio; 95% CI 16.81 to 17.84) more likely to undergo arthroplasty than the general population without a history of chondroplasty.CONCLUSIONSPatients with cartilage lesions of the knee, treated with arthroscopic chondroplasty, are at greater risk of subsequent knee arthroplasty than the general population and for a proportion of patients, there is insufficient benefit to prevent the need for knee arthroplasty within one- to five-years. These important new data will inform patients of the anticipated outcomes following this procedure. The risk in comparison to non-operative treatment remains unknown and there is an urgent need for a randomised clinical trial in thispopulation

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Rates of knee arthroplasty in patients with a history of arthroscopic chondroplasty:results from a retrospective cohort study utilising the National Hospital Episode Statistics for England

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Rates of knee arthroplasty in patients with a history of arthroscopic chondroplasty:results from a retrospective cohort study utilising the National Hospital Episode Statistics for England

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