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Achieving Minimum Clinically Important Difference in Oxford Knee Score and Short Form-36 Physical Component Summary Is Less Likely with Single-Radius Compared with Multiradius Total Knee Arthroplasty in Asians.
J Knee Surg 2019; 32(3):227-232JK

Abstract

Single-radius (SR) and multiradius (MR) total knee arthroplasties (TKAs) have produced similar outcomes, albeit most studies originate from Western nations. There are known knee kinematic differences between Western and Asian patients after TKA. The aim of this study is to compare the short-term patient-reported outcome measures (PROMs) of SR-TKA versus MR-TKA in Asians. Registry data of 133 SR-TKA versus 363 MR-TKA by a single surgeon were analyzed. Preoperative and 2-year postoperative range of motion (ROM) and PROMs were compared with Student's t-test and Mann-Whitney U-test. Logistic regression model was used to evaluate the odds of SR-TKA or MR-TKA achieving the minimum clinically important difference (MCID) of studied outcomes. Patients in both groups had similar age (65.7 ± 7.6 vs. 65.8 ± 8.2 years; p = 0.317), gender proportion (71% females vs. 79% females; p = 0.119), and ethnic distribution (80% Chinese vs. 84% Chinese; p = 0.258). Preoperatively, there were no statistically significant differences between both groups for ROM, Knee Society Score (KSS), Oxford Knee Score (OKS), and Short Form (SF)-36 scores. At 2 years, all outcomes were statistically similar or failed to achieve a difference of MCID. Controlling for all preoperative variables, SR-TKA has significantly lower odds of achieving MCID for OKS (odds ratio [OR]: 0.275, 95% confidence interval [CI]: 0.114-0.663; p = 0.004) and SF-36 Physical Component Summary (PCS) (OR: 0.547; 95% CI: 0.316-0.946; p = 0.031) compared with MR-TKA. In conclusion, there are no significant differences in the absolute PROMs between SR-TKA and MR-TKA at 2 years following TKA in Asians. However, SR-TKA has significantly lower odds of achieving the MCID for OKS and SF-36 PCS.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.Centre for Quantitative Medicine, Duke-NUS Medical School, Singapore.Orthopaedic Diagnostic Centre, Singapore General Hospital, Singapore.Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29635649

Citation

Lee, Wu Chean, et al. "Achieving Minimum Clinically Important Difference in Oxford Knee Score and Short Form-36 Physical Component Summary Is Less Likely With Single-Radius Compared With Multiradius Total Knee Arthroplasty in Asians." The Journal of Knee Surgery, vol. 32, no. 3, 2019, pp. 227-232.
Lee WC, Bin Abd Razak HR, Allen JC, et al. Achieving Minimum Clinically Important Difference in Oxford Knee Score and Short Form-36 Physical Component Summary Is Less Likely with Single-Radius Compared with Multiradius Total Knee Arthroplasty in Asians. J Knee Surg. 2019;32(3):227-232.
Lee, W. C., Bin Abd Razak, H. R., Allen, J. C., Chong, H. C., & Tan, H. C. A. (2019). Achieving Minimum Clinically Important Difference in Oxford Knee Score and Short Form-36 Physical Component Summary Is Less Likely with Single-Radius Compared with Multiradius Total Knee Arthroplasty in Asians. The Journal of Knee Surgery, 32(3), pp. 227-232. doi:10.1055/s-0038-1641139.
Lee WC, et al. Achieving Minimum Clinically Important Difference in Oxford Knee Score and Short Form-36 Physical Component Summary Is Less Likely With Single-Radius Compared With Multiradius Total Knee Arthroplasty in Asians. J Knee Surg. 2019;32(3):227-232. PubMed PMID: 29635649.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Achieving Minimum Clinically Important Difference in Oxford Knee Score and Short Form-36 Physical Component Summary Is Less Likely with Single-Radius Compared with Multiradius Total Knee Arthroplasty in Asians. AU - Lee,Wu Chean, AU - Bin Abd Razak,Hamid Rahmatullah, AU - Allen,John Carson, AU - Chong,Hwei Chi, AU - Tan,Hwee Chye Andrew, Y1 - 2018/04/10/ PY - 2018/4/11/pubmed PY - 2019/5/22/medline PY - 2018/4/11/entrez SP - 227 EP - 232 JF - The journal of knee surgery JO - J Knee Surg VL - 32 IS - 3 N2 - Single-radius (SR) and multiradius (MR) total knee arthroplasties (TKAs) have produced similar outcomes, albeit most studies originate from Western nations. There are known knee kinematic differences between Western and Asian patients after TKA. The aim of this study is to compare the short-term patient-reported outcome measures (PROMs) of SR-TKA versus MR-TKA in Asians. Registry data of 133 SR-TKA versus 363 MR-TKA by a single surgeon were analyzed. Preoperative and 2-year postoperative range of motion (ROM) and PROMs were compared with Student's t-test and Mann-Whitney U-test. Logistic regression model was used to evaluate the odds of SR-TKA or MR-TKA achieving the minimum clinically important difference (MCID) of studied outcomes. Patients in both groups had similar age (65.7 ± 7.6 vs. 65.8 ± 8.2 years; p = 0.317), gender proportion (71% females vs. 79% females; p = 0.119), and ethnic distribution (80% Chinese vs. 84% Chinese; p = 0.258). Preoperatively, there were no statistically significant differences between both groups for ROM, Knee Society Score (KSS), Oxford Knee Score (OKS), and Short Form (SF)-36 scores. At 2 years, all outcomes were statistically similar or failed to achieve a difference of MCID. Controlling for all preoperative variables, SR-TKA has significantly lower odds of achieving MCID for OKS (odds ratio [OR]: 0.275, 95% confidence interval [CI]: 0.114-0.663; p = 0.004) and SF-36 Physical Component Summary (PCS) (OR: 0.547; 95% CI: 0.316-0.946; p = 0.031) compared with MR-TKA. In conclusion, there are no significant differences in the absolute PROMs between SR-TKA and MR-TKA at 2 years following TKA in Asians. However, SR-TKA has significantly lower odds of achieving the MCID for OKS and SF-36 PCS. SN - 1938-2480 UR - https://www.unboundmedicine.com/medline/citation/29635649/Achieving_Minimum_Clinically_Important_Difference_in_Oxford_Knee_Score_and_Short_Form_36_Physical_Component_Summary_Is_Less_Likely_with_Single_Radius_Compared_with_Multiradius_Total_Knee_Arthroplasty_in_Asians_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-0038-1641139 DB - PRIME DP - Unbound Medicine ER -