Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Apr 24:41:14-22.
doi: 10.1016/j.jor.2023.04.018. eCollection 2023 Jul.

The effect of weight compared to BMI on patient reported outcomes at long term follow up of primary total hip arthroplasty

Thomas S Robertson  1   2 , Stuart Adam Callary  1   2 , Kerry Costi  1   2 , Robyn Janice Clothier  1   2 , Kamalesh Venugopal  3 , Mark Rickman  1   2
Affiliations

The effect of weight compared to BMI on patient reported outcomes at long term follow up of primary total hip arthroplasty

Thomas S Robertson et al. J Orthop. .

Abstract

Introduction: Obesity has been linked to the development of osteoarthritis meaning that a large portion of arthroplasty patients are overweight or obese. Whilst the short-term complications associated with obesity are well described there is a paucity of evidence on the effect of weight compared to BMI for long term functional outcomes of total hip replacements (THR). The aim of this study was to investigate the influence of BMI and weight on long-term patient reported outcome measures following primary THR.

Methods: 846 patients who underwent primary THR at the Royal Adelaide Hospital between 2000 and 2009 had a pre-operative height and weight recorded. Patient reported outcome measures (PROMs) were completed at 1, 5 and greater than 10 years follow-up. Categorical comparison of PROMs was performed for patients in weight categories of 0-65 kg, 65-80 kg, 80-95 kg, 95-110 kg and >110 kg; and BMI categories as per the WHO Classifications.

Results: There was no difference in absolute or change in PROMs for any weight category. BMI did not have an effect on the change in (HHS), however there was a statistically significant decrease in absolute (HHS) values at 1 and 5 years with increasing obesity. 65 patients underwent revision within the first ten years.

Conclusion: The results from this study confirm for the first time that there was no impact of weight or BMI on the change in long-term PROMs of THR. There remains a need for larger registry studies to investigate the effect of weight and BMI on long-term patient outcomes and revision rate.

PubMed Disclaimer

Conflict of interest statement

Stuart Callary was supported by a EMCR Research Fellowship from The Hospital Research Foundation Group during the period of this study.

Figures

Fig. 1
Fig. 1
Pre op Weight over BMI for patients who had a 10 year follow up.
Fig. 2
Fig. 2
Harris Hip score against BMI at 1,5 and 10 year follow-up.
Fig. 3
Fig. 3
Harris Hip score against weight at 1,5 and 10 year follow-up.
Fig. 4
Fig. 4
HHS against BMI at 1, 5 and 10 year follow up. Only patients that completed 10 year follow up included.
Fig. 5
Fig. 5
Change in HHS score against BMI at 1,5 and 10 year follow-up.
Fig. 6
Fig. 6
Change in HHS score against weight at 1,5 and 10 year follow-up.
Fig. 7
Fig. 7
Analysis of Age and BMI against loss of follow up.
Image 1
Image 2
Image 3
Image 4
See this image and copyright information in PMC

References

    1. Daigle M.E., Weinstein A.M., Katz J.N., Losina E. The cost-effectiveness of total joint arthroplasty: a systematic review of published literature. Best Pract Res Clin Rheumatol. 2012;26(5):649–658. - PMC - PubMed
    1. Tukker A., Visscher T.L., Picavet H.S. Overweight and health problems of the lower extremities: osteoarthritis, pain and disability. Publ Health Nutr. 2009;12(3):359–368. - PubMed
    1. AOANJRR. Australian . AOA; Adelaide: 2020. Orthopaedics Association National Joint Replacement Registry Annual Report.
    1. Ward D.T., Metz L.N., Horst P.K., Kim H.T., Kuo A.C. Complications of morbid obesity in total joint arthroplasty: risk stratification based on BMI. J Arthroplasty. 2015;30(9 Suppl):42–46. - PubMed
    1. Adhikary S.D., Liu W.M., Memtsoudis S.G., Davis C.M., 3rd, Liu J. Body mass index more than 45 kg/m(2) as a cutoff point is associated with dramatically increased postoperative complications in total knee arthroplasty and total hip arthroplasty. J Arthroplasty. 2016;31(4):749–753. - PubMed

LinkOut - more resources