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Obesity Does Not Affect Outcomes in Hybrid Versus Cemented Total Knee Arthroplasty in Asians.
J Arthroplasty 2017; 32(12):3643-3646JA

Abstract

BACKGROUND

This study aims to evaluate patient reported and functional outcomes following hybrid versus cemented total knee arthroplasty (TKA) in patients, stratified by body mass index (BMI).

METHODS

Registry data of patients undergoing primary TKA between January 2004 and January 2013 were collected. Baseline interviews were conducted preoperatively to assess sociodemographic characteristics, BMI, and knee arthritis severity, using the Knee Society Score which consists of the Knee Society Knee Score and the Knee Society Function Score (KSFS) and Oxford Knee Score (OKS). These scores were collected prospectively, preoperatively, and postoperatively up to 2 years. Two-year outcomes and 5-year revision rates were then compared between (1) hybrid and cemented TKA groups and (2) BMI subclasses within the hybrid and cemented TKA groups.

RESULTS

Patients who underwent cemented TKA had marginally better flexion range, KSFS, and OKS at 2 years postoperatively. In the overweight category, flexion range, KSFS, and OKS were marginally lower for hybrid TKAs. There were no differences in outcomes between the 2 groups in Class I and II obesity. Within the cemented TKA group, there were no differences in the outcomes between BMI subclasses. There were significant differences in the KSFS (0.023) and OKS (0.030) between the BMI subclasses within the hybrid TKA group, with patients in Class II obesity faring the worst. There was no statistically significant difference in the revision rates.

CONCLUSION

We conclude that obesity does not affect outcomes in hybrid versus cemented TKA.

Authors+Show Affiliations

Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

28734613

Citation

Ang, Jin-Guang Ernest, et al. "Obesity Does Not Affect Outcomes in Hybrid Versus Cemented Total Knee Arthroplasty in Asians." The Journal of Arthroplasty, vol. 32, no. 12, 2017, pp. 3643-3646.
Ang JE, Bin Abd Razak HR, Howe TS, et al. Obesity Does Not Affect Outcomes in Hybrid Versus Cemented Total Knee Arthroplasty in Asians. J Arthroplasty. 2017;32(12):3643-3646.
Ang, J. E., Bin Abd Razak, H. R., Howe, T. S., Tay, B. K., & Yeo, S. J. (2017). Obesity Does Not Affect Outcomes in Hybrid Versus Cemented Total Knee Arthroplasty in Asians. The Journal of Arthroplasty, 32(12), pp. 3643-3646. doi:10.1016/j.arth.2017.06.043.
Ang JE, et al. Obesity Does Not Affect Outcomes in Hybrid Versus Cemented Total Knee Arthroplasty in Asians. J Arthroplasty. 2017;32(12):3643-3646. PubMed PMID: 28734613.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Obesity Does Not Affect Outcomes in Hybrid Versus Cemented Total Knee Arthroplasty in Asians. AU - Ang,Jin-Guang Ernest, AU - Bin Abd Razak,Hamid Rahmatullah, AU - Howe,Tet-Sen, AU - Tay,Boon-Keng, AU - Yeo,Seng-Jin, Y1 - 2017/07/05/ PY - 2017/04/07/received PY - 2017/06/13/revised PY - 2017/06/27/accepted PY - 2017/7/25/pubmed PY - 2018/6/5/medline PY - 2017/7/24/entrez KW - Asian KW - MCID KW - cemented KW - hybrid KW - obesity KW - total knee arthroplasty SP - 3643 EP - 3646 JF - The Journal of arthroplasty JO - J Arthroplasty VL - 32 IS - 12 N2 - BACKGROUND: This study aims to evaluate patient reported and functional outcomes following hybrid versus cemented total knee arthroplasty (TKA) in patients, stratified by body mass index (BMI). METHODS: Registry data of patients undergoing primary TKA between January 2004 and January 2013 were collected. Baseline interviews were conducted preoperatively to assess sociodemographic characteristics, BMI, and knee arthritis severity, using the Knee Society Score which consists of the Knee Society Knee Score and the Knee Society Function Score (KSFS) and Oxford Knee Score (OKS). These scores were collected prospectively, preoperatively, and postoperatively up to 2 years. Two-year outcomes and 5-year revision rates were then compared between (1) hybrid and cemented TKA groups and (2) BMI subclasses within the hybrid and cemented TKA groups. RESULTS: Patients who underwent cemented TKA had marginally better flexion range, KSFS, and OKS at 2 years postoperatively. In the overweight category, flexion range, KSFS, and OKS were marginally lower for hybrid TKAs. There were no differences in outcomes between the 2 groups in Class I and II obesity. Within the cemented TKA group, there were no differences in the outcomes between BMI subclasses. There were significant differences in the KSFS (0.023) and OKS (0.030) between the BMI subclasses within the hybrid TKA group, with patients in Class II obesity faring the worst. There was no statistically significant difference in the revision rates. CONCLUSION: We conclude that obesity does not affect outcomes in hybrid versus cemented TKA. SN - 1532-8406 UR - https://www.unboundmedicine.com/medline/citation/28734613/Obesity_Does_Not_Affect_Outcomes_in_Hybrid_Versus_Cemented_Total_Knee_Arthroplasty_in_Asians_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0883-5403(17)30572-7 DB - PRIME DP - Unbound Medicine ER -