Reliability and precision of single frequency bioelectrical impedance assessment of lower extremity swelling following total knee arthroplasty

Total knee arthroplasty (TKA) is the most common elective orthopedic surgery performed in the United States. Following surgery patients experience significant lower extremity swelling that is related to poor satisfaction with surgery and is hypothesized to contribute to functional decline. However,...

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Published inPhysiotherapy theory and practice Vol. 37; no. 1; pp. 197 - 203
Main Authors Loyd, Brian J, Burrows, Kristine, Forster, Jeri E, Stackhouse, Scott K, Hogan, Craig, Stevens-Lapsley, Jennifer E
Format Journal Article
LanguageEnglish
Published England Taylor & Francis Ltd 2021
Subjects
Aged
Arthroplasty
Arthroplasty, Replacement, Knee
Bioelectrical impedance
Bone surgery
Edema - physiopathology
Elective surgery
Electric Impedance
Female
Functional impairment
Humans
Joint replacement surgery
Joint surgery
Knee
Longitudinal Studies
Lower Extremity - physiopathology
Lower limbs
Male
Males
Measurement
Middle Aged
Orthopedic surgery
Postoperative Complications - physiopathology
Reliability
Reproducibility of Results
Surgery
Psychometrics
Swelling
Bioelectrical Impedance Assessment
Reliability
Precision
Total Knee Arthroplasty
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Abstract Total knee arthroplasty (TKA) is the most common elective orthopedic surgery performed in the United States. Following surgery patients experience significant lower extremity swelling that is related to poor satisfaction with surgery and is hypothesized to contribute to functional decline. However, in practice, precise and reliable methods for measuring lower extremity swelling do not exist. The purpose of this study was to provide reliability and precision parameters of an innovative approach, single frequency bioelectrical impedance assessment (SF-BIA), for measuring post-TKA lower extremity swelling. Swelling in 56 patients (64.3 ± 9.3 years; 29 males) was measured before and after TKA using SF-BIA and circumferential measures (CM). Reliability of the measures was calculated using Intraclass Correlation Coefficients (ICC). Precision of the measures was provided using standard error of the measurement and minimal detectable change (MDC90). Change values between time points for SF-BIA and CM are provided. SF-BIA was found to have greater reliability following surgery compared to CM (ICC = 0.99 vs 0.68). SF-BIA was found to have an MDC90 = 2% following surgery, indicating improved ability to detect minute fluctuations in swelling compared to CM (MDC90 = 6%) following surgery. These results indicate that SF-BIA improves the precision and reliability of swelling measurement compared to CM.
AbstractList Total knee arthroplasty (TKA) is the most common elective orthopedic surgery performed in the United States. Following surgery patients experience significant lower extremity swelling that is related to poor satisfaction with surgery and is hypothesized to contribute to functional decline. However, in practice, precise and reliable methods for measuring lower extremity swelling do not exist. The purpose of this study was to provide reliability and precision parameters of an innovative approach, single frequency bioelectrical impedance assessment (SF-BIA), for measuring post-TKA lower extremity swelling. Swelling in 56 patients (64.3 ± 9.3 years; 29 males) was measured before and after TKA using SF-BIA and circumferential measures (CM). Reliability of the measures was calculated using Intraclass Correlation Coefficients (ICC). Precision of the measures was provided using standard error of the measurement and minimal detectable change (MDC90). Change values between time points for SF-BIA and CM are provided. SF-BIA was found to have greater reliability following surgery compared to CM (ICC = 0.99 vs 0.68). SF-BIA was found to have an MDC90 = 2% following surgery, indicating improved ability to detect minute fluctuations in swelling compared to CM (MDC90 = 6%) following surgery. These results indicate that SF-BIA improves the precision and reliability of swelling measurement compared to CM.
Total knee arthroplasty (TKA) is the most common elective orthopedic surgery performed in the United States. Following surgery patients experience significant lower extremity swelling that is related to poor satisfaction with surgery and is hypothesized to contribute to functional decline. However, in practice, precise and reliable methods for measuring lower extremity swelling do not exist. The purpose of this study was to provide reliability and precision parameters of an innovative approach, single frequency bioelectrical impedance assessment (SF-BIA), for measuring post-TKA lower extremity swelling. Swelling in 56 patients (64.3 ± 9.3 years; 29 males) was measured before and after TKA using SF-BIA and circumferential measures (CM). Reliability of the measures were calculated using Intraclass Correlation Coefficients (ICC). Precision of the measures were provided using standard error of the measurement and minimal detectable change (MDC90). Change values between time points for SF-BIA and CM are provided. SF-BIA was found to have greater reliability following surgery compared to CM (ICC = 0.99 vs 0.68). SF-BIA was found to have a MDC90 = 2% following surgery, indicating improved ability to detect minute fluctuations in swelling compared to CM (MDC90 = 6%) following surgery. These results indicate that SF-BIA improves the precision and reliability of swelling measurement compared to CM.
Author Forster, Jeri E
Hogan, Craig
Loyd, Brian J
Stackhouse, Scott K
Burrows, Kristine
Stevens-Lapsley, Jennifer E
AuthorAffiliation 1 University of Colorado Anschutz Medical Campus, 13121 E 17th Ave., Mail Stop C244, Aurora, CO, 80045
3 University of Colorado Hospital, 12631 E. 17 th Ave., Mailstop B202 (or Room 4602), Aurora, CO 80045
2 University of New England, Department of Physical Therapy, 716 Stevens Ave., Portland, ME 04103
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Swelling
Bioelectrical Impedance Assessment
Reliability
Precision
Total Knee Arthroplasty
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Snippet Total knee arthroplasty (TKA) is the most common elective orthopedic surgery performed in the United States. Following surgery patients experience significant...
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SubjectTerms Aged
Arthroplasty
Arthroplasty, Replacement, Knee
Bioelectrical impedance
Bone surgery
Edema - physiopathology
Elective surgery
Electric Impedance
Female
Functional impairment
Humans
Joint replacement surgery
Joint surgery
Knee
Longitudinal Studies
Lower Extremity - physiopathology
Lower limbs
Male
Males
Measurement
Middle Aged
Orthopedic surgery
Postoperative Complications - physiopathology
Reliability
Reproducibility of Results
Surgery
Title Reliability and precision of single frequency bioelectrical impedance assessment of lower extremity swelling following total knee arthroplasty
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