Variations In Good Patient Reported Outcomes After Total Knee Arthroplasty

Amit Kiran; Nicholas Bottomley; Leela C Biant; M Kassim Javaid; Andrew J Carr; Cyrus Cooper; Richard E Field; David W Murray; Andrew Price; David J Beard; Nigel K Arden

doi:10.1016/j.arth.2015.02.039

Variations In Good Patient Reported Outcomes After Total Knee Arthroplasty

J Arthroplasty. 2015 Aug;30(8):1364-71. doi: 10.1016/j.arth.2015.02.039. Epub 2015 Feb 28.

Authors

Affiliations

¹ Oxford NIHR Musculoskeletal BRU to Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
² Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK; Research & Education South West London Elective Orthopaedic Centre, Dorking Road, Epsom, Surrey, UK.
³ Oxford NIHR Musculoskeletal BRU to Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; MRC Life course Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK.
⁴ Research & Education South West London Elective Orthopaedic Centre, Dorking Road, Epsom, Surrey, UK; St. Helier Hospital, Wrythe Lane, Carshalton, Surrey, UK.

PMID: 25817188
DOI: 10.1016/j.arth.2015.02.039

Abstract

This study identifies optimal OKS values that discriminate post-operative (TKA) patient satisfaction and determines the variation in threshold values by patient characteristics and expectations. It is the first to identify patient improvement using measures (PoPC) that account for patient's pre-operative symptom severity. Of 365 primary TKA patients from a London district general hospital 84% were satisfied at 12 and 24 months. Whilst the overall OKS thresholds (follow-up, change, PoPC) were stable at 12 months (31, 11, 39.7%) and 24 months (35, 12, 38.9%), patients who were older (≥75years), were underweight/normal (BMI<25), had pre-operative symptom severity (OKS≤15) and expected no pain post-surgery, required a greater (potential) improvement to be classed as satisfied. When reporting good patient outcomes, cohorts should be stratified accordingly.

Keywords: Oxford Knee Score; PoPC; knee arthroplasty; patient reported outcomes; satisfaction.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aged
Arthroplasty, Replacement, Knee / methods*
Arthroplasty, Replacement, Knee / psychology
Cohort Studies
Female
Follow-Up Studies
Humans
London
Male
Middle Aged
Osteoarthritis, Knee / psychology
Osteoarthritis, Knee / surgery*
Pain
Patient Outcome Assessment*
Patient Satisfaction*
Postoperative Period
Research Design
Surveys and Questionnaires
Symptom Assessment
Time Factors

Abstract

Publication types

MeSH terms

Grants and funding