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The accuracy of patient-reported weight prior to total joint arthroplasty and arthroscopy of the lower extremity

  • Hip Arthroplasty
  • Published:
Archives of Orthopaedic and Trauma Surgery Aims and scope Submit manuscript

Abstract

Purpose

The accuracy of preoperative patient-reported weight was never evaluated in patients undergoing lower extremity procedures. The purpose of this study was to: (1) compare the disparity between patient-reported and measured weights in patients undergoing lower extremity total joint arthroplasty (LE-TJA) and arthroscopy; and (2) investigate the association between patient-specific factors (patient age, BMI, zip code, and psychiatric comorbidities) and the accuracy of patient-reported weight.

Methods

Preoperative self-reported weights were retrospectively compared to measured weights in 400 LE-TJA and 85 control arthroscopy patients. The difference between reported and measured weights was calculated. Additionally, the percent of accurate reporting within 0.5, 1, and 5 kg ranges of the measured weight was calculated. Outcomes were compared between surgical modalities as well as between patient-specific factors.

Results

There was low disparity (p = 0.838) between patient-reported and measured weights among LE-TJA (mean difference 0.18 ± 3.63 kg; p = 0.446) and that of arthroscopy (0.27 ± 4.08 kg; p = 0.129) patients. Additionally, LE-TJA patients were equally likely to report weights accurately within 0.5 kg of the measured weight (74% vs. 71.76%; p = 0.908). LE-TJA and arthroscopy patients had similar reporting accuracy within 1 and 5 kg of the measured weights (p > 0.05).

Conclusion

Preoperative patient-reported weights demonstrated acceptable accuracy in both LE-TJA and lower extremity arthroscopic orthopaedic patient populations making it a potentially reliable parameter of preoperative assessment.

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Funding

No funding was received for this study.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, 19104, USA

    Hao-Hua Wu, Jason Silvestre, Charles L. Nelson & Craig L. Israelite

  2. Department of Orthopaedic Surgery, Center for Hip Preservation, Orthopaedic and Rheumatologic Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Mail code A41, Cleveland, OH, 44195, USA

    Linsen T. Samuel, Alexander J. Acuña & Atul F. Kamath

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  1. Hao-Hua Wu
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Corresponding author

Correspondence to Atul F. Kamath.

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Conflict of interest

A.F.K. reports the following disclosures: research support (Signature Orthopaedics), paid presenter or speaker (DePuy Synthes and Zimmer Biomet), paid consultant (DePuy Synthes and Zimmer Biomet), stock or stock options (Zimmer Biomet, Johnson & Johnson, and Procter & Gamble), IP royalties (Innomed), and board or committee member (AAOS, AAHKS, and Anterior Hip Foundation). C.L.I. reports the following: research support (Zimmer). C.L.N. reports the following disclosures: board or committee member (American Board of Orthopaedic Surgery, Inc.; AOA; Knee Society), Paid consultant (Exactech, Inc.; Zimmer), and editorial or governing board (Journal of Hip Surgery). HW, LTS, JS, and AJA have nothing to disclose.

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Our analysis was approved by the Institutional Review Board (IRB) of the University of Pennsylvania (Protocol #821738).

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Wu, HH., Samuel, L.T., Silvestre, J. et al. The accuracy of patient-reported weight prior to total joint arthroplasty and arthroscopy of the lower extremity. Arch Orthop Trauma Surg 142, 2381–2388 (2022). https://doi.org/10.1007/s00402-021-04095-5

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