Outcomes of Unicompartmental Knee Arthroplasty Stratified by Body Mass Index

Peter M. Bonutti; Maria S. Goddard; Michael G. Zywiel; Harpal S. Khanuja; Aaron J. Johnson; Michael A. Mont

doi:10.1016/j.arth.2010.11.001

Outcomes of Unicompartmental Knee Arthroplasty Stratified by Body Mass Index

Peter M. Bonutti, Maria S. Goddard, Michael G. Zywiel, Harpal S. Khanuja, Aaron J. Johnson, Michael A. Mont

School of Medicine

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

Patients who have high body mass indices can have disabling medial compartment knee osteoarthritis, which might benefit from unicompartmental knee arthroplasty (UKA). The purpose of this study was to compare clinical and radiographic outcomes of UKAs in patients with body mass indices (BMIs) greater and less than 35 kg/m ². Thirty-four patients (40 knees) had BMIs of 35 kg/m ² or greater, whereas the remaining 33 patients (40 knees) had BMIs below 35 kg/m ², with 2-year minimum follow-up. In the high-BMI group, 5 knees were revised to total knee arthroplasty, compared with none in the lower BMI group. Knee Society scores were lower in the surviving high-BMI knees. All surviving components were radiographically stable. The results suggest that UKA should be approached with caution in patients who have high BMIs.

Original language	English (US)
Pages (from-to)	1149-1153
Number of pages	5
Journal	Journal of Arthroplasty
Volume	26
Issue number	8
DOIs	https://doi.org/10.1016/j.arth.2010.11.001
State	Published - Dec 2011

Keywords

High BMI
Survivorship
UKA
Unicompartmental knee arthroplasty

ASJC Scopus subject areas

Orthopedics and Sports Medicine

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10.1016/j.arth.2010.11.001

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title = "Outcomes of Unicompartmental Knee Arthroplasty Stratified by Body Mass Index",

abstract = "Patients who have high body mass indices can have disabling medial compartment knee osteoarthritis, which might benefit from unicompartmental knee arthroplasty (UKA). The purpose of this study was to compare clinical and radiographic outcomes of UKAs in patients with body mass indices (BMIs) greater and less than 35 kg/m 2. Thirty-four patients (40 knees) had BMIs of 35 kg/m 2 or greater, whereas the remaining 33 patients (40 knees) had BMIs below 35 kg/m 2, with 2-year minimum follow-up. In the high-BMI group, 5 knees were revised to total knee arthroplasty, compared with none in the lower BMI group. Knee Society scores were lower in the surviving high-BMI knees. All surviving components were radiographically stable. The results suggest that UKA should be approached with caution in patients who have high BMIs.",

keywords = "High BMI, Survivorship, UKA, Unicompartmental knee arthroplasty",

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AU - Zywiel, Michael G.

AU - Khanuja, Harpal S.

AU - Johnson, Aaron J.

AU - Mont, Michael A.

PY - 2011/12

Y1 - 2011/12

N2 - Patients who have high body mass indices can have disabling medial compartment knee osteoarthritis, which might benefit from unicompartmental knee arthroplasty (UKA). The purpose of this study was to compare clinical and radiographic outcomes of UKAs in patients with body mass indices (BMIs) greater and less than 35 kg/m 2. Thirty-four patients (40 knees) had BMIs of 35 kg/m 2 or greater, whereas the remaining 33 patients (40 knees) had BMIs below 35 kg/m 2, with 2-year minimum follow-up. In the high-BMI group, 5 knees were revised to total knee arthroplasty, compared with none in the lower BMI group. Knee Society scores were lower in the surviving high-BMI knees. All surviving components were radiographically stable. The results suggest that UKA should be approached with caution in patients who have high BMIs.

AB - Patients who have high body mass indices can have disabling medial compartment knee osteoarthritis, which might benefit from unicompartmental knee arthroplasty (UKA). The purpose of this study was to compare clinical and radiographic outcomes of UKAs in patients with body mass indices (BMIs) greater and less than 35 kg/m 2. Thirty-four patients (40 knees) had BMIs of 35 kg/m 2 or greater, whereas the remaining 33 patients (40 knees) had BMIs below 35 kg/m 2, with 2-year minimum follow-up. In the high-BMI group, 5 knees were revised to total knee arthroplasty, compared with none in the lower BMI group. Knee Society scores were lower in the surviving high-BMI knees. All surviving components were radiographically stable. The results suggest that UKA should be approached with caution in patients who have high BMIs.

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Outcomes of Unicompartmental Knee Arthroplasty Stratified by Body Mass Index

Abstract

Keywords

ASJC Scopus subject areas

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