Journal
PHYSIOTHERAPY THEORY AND PRACTICE
Volume 37, Issue 1, Pages 197-203Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/09593985.2019.1619886
Keywords
Bioelectrical Impedance Assessment; Precision; Psychometrics; Reliability; Swelling; Total Knee Arthroplasty
Categories
Funding
- National Institute on Aging [T32 AG000279]
- National Institute of Arthritis and Musculoskeletal and Skin Diseases [R01-HD06590]
Ask authors/readers for more resources
Total knee arthroplasty (TKA) is the most common elective orthopedic surgery in the United States. Post-TKA lower extremity swelling is significant and can impact patient satisfaction and functional decline, but current methods for measuring it lack precision and reliability. This study found that single frequency bioelectrical impedance assessment (SF-BIA) is more reliable and precise for measuring post-TKA swelling compared to circumferential measures (CM), improving the ability to detect minute fluctuations in swelling.
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available