TY - JOUR
T1 - Psychosocial determinants of outcomes in knee replacement
AU - Lopez-Olivo, Maria A.
AU - Landon, Glenn C.
AU - Siff, Sherwin J.
AU - Edelstein, David
AU - Pak, Chong
AU - Kallen, Michael A.
AU - Stanley, Melinda
AU - Zhang, Hong
AU - Robinson, Kausha C.
AU - Suarez-Almazor, Maria E.
PY - 2011/10
Y1 - 2011/10
N2 - Objective: To identify potential psychosocial and educational barriers to clinical success following knee replacement. Patients and Methods: The authors evaluated 241 patients undergoing total knee replacement, preoperatively and 6 months after surgery. Outcomes included the Western Ontario McMaster (WOMAC) scale and the Knee Society rating system (KSRS). Independent variables included: the medical outcome study-social support scale; depression, anxiety and stress scale; brief COPE inventory; health locus of control; arthritis self-effi cacy scale and the life orientation test-revised. Multiple regression models evaluated associations of baseline demographic and psychosocial variables with outcomes at 6 months, controlling for body mass index, comorbidities and baseline outcome scores. Results: Patients' mean age was 65±9 years; 65% were women. Most patients improved outcomes after surgery. Several psychosocial variables were associated with outcomes. Regression analyses indicated lower education, less tangible support, depression, less problem-solving coping, more dysfunctional coping, lower internal locus of control were associated with worse WOMAC scores (R2 contribution of psychosocial variables for pain 0.07; for function, 0.14). Older age, lower education, depression and less problem-solving coping were associated with poorer total KSRS scores (R 2 contribution of psychosocial variables to total KSRS model 0.09). Psychosocial variables as a set contributed from 25% to 74% of total explained variance across the models tested. Conclusion: Patients' level of education, tangible support, depression, problem-solving coping, dysfunctional coping and internal locus of control were associated with pain and functional outcomes after knee replacement. The findings suggest that, in addition to medical management, perioperative psychosocial evaluation and intervention are crucial in enhancing knee replacement outcomes.
AB - Objective: To identify potential psychosocial and educational barriers to clinical success following knee replacement. Patients and Methods: The authors evaluated 241 patients undergoing total knee replacement, preoperatively and 6 months after surgery. Outcomes included the Western Ontario McMaster (WOMAC) scale and the Knee Society rating system (KSRS). Independent variables included: the medical outcome study-social support scale; depression, anxiety and stress scale; brief COPE inventory; health locus of control; arthritis self-effi cacy scale and the life orientation test-revised. Multiple regression models evaluated associations of baseline demographic and psychosocial variables with outcomes at 6 months, controlling for body mass index, comorbidities and baseline outcome scores. Results: Patients' mean age was 65±9 years; 65% were women. Most patients improved outcomes after surgery. Several psychosocial variables were associated with outcomes. Regression analyses indicated lower education, less tangible support, depression, less problem-solving coping, more dysfunctional coping, lower internal locus of control were associated with worse WOMAC scores (R2 contribution of psychosocial variables for pain 0.07; for function, 0.14). Older age, lower education, depression and less problem-solving coping were associated with poorer total KSRS scores (R 2 contribution of psychosocial variables to total KSRS model 0.09). Psychosocial variables as a set contributed from 25% to 74% of total explained variance across the models tested. Conclusion: Patients' level of education, tangible support, depression, problem-solving coping, dysfunctional coping and internal locus of control were associated with pain and functional outcomes after knee replacement. The findings suggest that, in addition to medical management, perioperative psychosocial evaluation and intervention are crucial in enhancing knee replacement outcomes.
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U2 - 10.1136/ard.2010.146423
DO - 10.1136/ard.2010.146423
M3 - Article
C2 - 21791452
AN - SCOPUS:80052514805
SN - 0003-4967
VL - 70
SP - 1775
EP - 1781
JO - Annals of the rheumatic diseases
JF - Annals of the rheumatic diseases
IS - 10
ER -