Objective physical activity before and one year after total knee arthroplasty

M.L. Van der Linden, P.J. Rowe, R.W. Nutton

    Research output: Contribution to conferencePaper

    Abstract

    The primary aim of this study was to investigate whether objective daily physical activity, measured using an activity monitor one year after Total Knee Arthroplasty was different from that measured before surgery. An activity monitor (activPAL) which records the number of steps in addition to the time spent sitting or lying, standing and 'stepping' was used to quantify physical activity. Forty-five patients with osteoarthritis (average 69.8 years old) were assessed an average of 38 days before and 368 days after total knee arthroplasty. A group of 40 age matched controls were also recruited. In addition to objective daily physical activity, knee range of motion, pain using the visual analogue score and the Western Ontario McMaster University Osteoarthritis Index (WOMAC 3.1) were also recorded before and after surgery. Patients reported a significant decrease in pain (54%, p<0.001) and increase in function (62%, p<0.001) after surgery. However, measures of physical activity showed much smaller improvements which were mostly statistically non-significant. The number of steps taken on one day increased by 19% (from 6438 to 7634 steps, p=0.119) and time spent stepping increased from 7.9% to 8.7% (p=0.27). Only average cadence and estimated energy expenditure were statistically significantly higher after surgery, 8% improvement, p=0.003 and 8% improvement, p=0.026 respectively. Stepwise regression analysis showed that only 11.4% of the improvement in physical activity was due to the decrease in pain. One year after TKA levels of physical activity were still significantly (p<0.05) lower than those of a group of age matched controls. In conclusions, other factors not measured in this study are to a large part determining the amount of physical activity in patients after knee surgery. Future studies aiming to identify those factors are warranted.

    Conference

    ConferenceBritish Association for Surgery of the Knee
    CityEdinburgh, Scotland
    Period2/04/093/04/09

    Fingerprint

    Knee Replacement Arthroplasties
    Exercise
    Pain
    Osteoarthritis
    Knee
    Age Groups
    Ontario
    Articular Range of Motion
    Energy Metabolism
    Research Design
    Regression Analysis

    Keywords

    • knee arthroplasty
    • bioengineering

    Cite this

    Van der Linden, M. L., Rowe, P. J., & Nutton, R. W. (2009). Objective physical activity before and one year after total knee arthroplasty. Paper presented at British Association for Surgery of the Knee, Edinburgh, Scotland, .
    Van der Linden, M.L. ; Rowe, P.J. ; Nutton, R.W. / Objective physical activity before and one year after total knee arthroplasty. Paper presented at British Association for Surgery of the Knee, Edinburgh, Scotland, .
    @conference{36405745f69643299a1decb993ead938,
    title = "Objective physical activity before and one year after total knee arthroplasty",
    abstract = "The primary aim of this study was to investigate whether objective daily physical activity, measured using an activity monitor one year after Total Knee Arthroplasty was different from that measured before surgery. An activity monitor (activPAL) which records the number of steps in addition to the time spent sitting or lying, standing and 'stepping' was used to quantify physical activity. Forty-five patients with osteoarthritis (average 69.8 years old) were assessed an average of 38 days before and 368 days after total knee arthroplasty. A group of 40 age matched controls were also recruited. In addition to objective daily physical activity, knee range of motion, pain using the visual analogue score and the Western Ontario McMaster University Osteoarthritis Index (WOMAC 3.1) were also recorded before and after surgery. Patients reported a significant decrease in pain (54{\%}, p<0.001) and increase in function (62{\%}, p<0.001) after surgery. However, measures of physical activity showed much smaller improvements which were mostly statistically non-significant. The number of steps taken on one day increased by 19{\%} (from 6438 to 7634 steps, p=0.119) and time spent stepping increased from 7.9{\%} to 8.7{\%} (p=0.27). Only average cadence and estimated energy expenditure were statistically significantly higher after surgery, 8{\%} improvement, p=0.003 and 8{\%} improvement, p=0.026 respectively. Stepwise regression analysis showed that only 11.4{\%} of the improvement in physical activity was due to the decrease in pain. One year after TKA levels of physical activity were still significantly (p<0.05) lower than those of a group of age matched controls. In conclusions, other factors not measured in this study are to a large part determining the amount of physical activity in patients after knee surgery. Future studies aiming to identify those factors are warranted.",
    keywords = "knee arthroplasty, bioengineering",
    author = "{Van der Linden}, M.L. and P.J. Rowe and R.W. Nutton",
    year = "2009",
    language = "English",
    note = "British Association for Surgery of the Knee ; Conference date: 02-04-2009 Through 03-04-2009",

    }

    Van der Linden, ML, Rowe, PJ & Nutton, RW 2009, 'Objective physical activity before and one year after total knee arthroplasty' Paper presented at British Association for Surgery of the Knee, Edinburgh, Scotland, 2/04/09 - 3/04/09, .

    Objective physical activity before and one year after total knee arthroplasty. / Van der Linden, M.L.; Rowe, P.J.; Nutton, R.W.

    2009. Paper presented at British Association for Surgery of the Knee, Edinburgh, Scotland, .

    Research output: Contribution to conferencePaper

    TY - CONF

    T1 - Objective physical activity before and one year after total knee arthroplasty

    AU - Van der Linden, M.L.

    AU - Rowe, P.J.

    AU - Nutton, R.W.

    PY - 2009

    Y1 - 2009

    N2 - The primary aim of this study was to investigate whether objective daily physical activity, measured using an activity monitor one year after Total Knee Arthroplasty was different from that measured before surgery. An activity monitor (activPAL) which records the number of steps in addition to the time spent sitting or lying, standing and 'stepping' was used to quantify physical activity. Forty-five patients with osteoarthritis (average 69.8 years old) were assessed an average of 38 days before and 368 days after total knee arthroplasty. A group of 40 age matched controls were also recruited. In addition to objective daily physical activity, knee range of motion, pain using the visual analogue score and the Western Ontario McMaster University Osteoarthritis Index (WOMAC 3.1) were also recorded before and after surgery. Patients reported a significant decrease in pain (54%, p<0.001) and increase in function (62%, p<0.001) after surgery. However, measures of physical activity showed much smaller improvements which were mostly statistically non-significant. The number of steps taken on one day increased by 19% (from 6438 to 7634 steps, p=0.119) and time spent stepping increased from 7.9% to 8.7% (p=0.27). Only average cadence and estimated energy expenditure were statistically significantly higher after surgery, 8% improvement, p=0.003 and 8% improvement, p=0.026 respectively. Stepwise regression analysis showed that only 11.4% of the improvement in physical activity was due to the decrease in pain. One year after TKA levels of physical activity were still significantly (p<0.05) lower than those of a group of age matched controls. In conclusions, other factors not measured in this study are to a large part determining the amount of physical activity in patients after knee surgery. Future studies aiming to identify those factors are warranted.

    AB - The primary aim of this study was to investigate whether objective daily physical activity, measured using an activity monitor one year after Total Knee Arthroplasty was different from that measured before surgery. An activity monitor (activPAL) which records the number of steps in addition to the time spent sitting or lying, standing and 'stepping' was used to quantify physical activity. Forty-five patients with osteoarthritis (average 69.8 years old) were assessed an average of 38 days before and 368 days after total knee arthroplasty. A group of 40 age matched controls were also recruited. In addition to objective daily physical activity, knee range of motion, pain using the visual analogue score and the Western Ontario McMaster University Osteoarthritis Index (WOMAC 3.1) were also recorded before and after surgery. Patients reported a significant decrease in pain (54%, p<0.001) and increase in function (62%, p<0.001) after surgery. However, measures of physical activity showed much smaller improvements which were mostly statistically non-significant. The number of steps taken on one day increased by 19% (from 6438 to 7634 steps, p=0.119) and time spent stepping increased from 7.9% to 8.7% (p=0.27). Only average cadence and estimated energy expenditure were statistically significantly higher after surgery, 8% improvement, p=0.003 and 8% improvement, p=0.026 respectively. Stepwise regression analysis showed that only 11.4% of the improvement in physical activity was due to the decrease in pain. One year after TKA levels of physical activity were still significantly (p<0.05) lower than those of a group of age matched controls. In conclusions, other factors not measured in this study are to a large part determining the amount of physical activity in patients after knee surgery. Future studies aiming to identify those factors are warranted.

    KW - knee arthroplasty

    KW - bioengineering

    UR - http://www.baskonline.com/

    M3 - Paper

    ER -

    Van der Linden ML, Rowe PJ, Nutton RW. Objective physical activity before and one year after total knee arthroplasty. 2009. Paper presented at British Association for Surgery of the Knee, Edinburgh, Scotland, .