Cognitive representations of illness and functional and affective adjustment following surgery for osteoarthritis

Orbell, Sheina; Johnston, Marie; Rowley, D.I.; Espley, Arthur; Davey, Peter

doi:10.1016/s0277-9536(97)10132-0

Cited by 95 publications

(102 citation statements)

References 26 publications

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“…In the first global model, when combining the significant predictors of each category of variables (adjusted R 2 66%), the largest contribution to the predicted variance was made by the preoperative 6-minute distance (56.6%), followed by knee flexion (4.7%), and then knee pain (4.2%). This result is not surprising since the baseline measure of the dependent variable is usually a strong predictor in regression analyses (6,19,20,22). Although, these proportions of explained variance could be considered optimistic because the development of the model capitalize on chance (138), we demonstrated through internal validation that this model was not overly optimistic.…”

Section: Discussionmentioning

confidence: 74%

“…Furthermore, we were not surprised to find that the preoperative distance covered during the 6-minute test was the strongest capability predictor. This is because the baseline value of a given measure is often a strong predictor of measures later in time (6,19,20,22). The observation that stride length was retained in the second model might be related to the fact that the 6-minute performance is influenced more by the spatial than the temporal component of gait speed.…”

Section: Discussionmentioning

confidence: 99%

“…However, correlation of other variables such as hearing (146), sight (146), depression (146,161), self-efficacy (154), psychological well-being (64), position sense (150,166), radiologic findings (64), and balance (143,146) with walking speed (143,150) or perceived functional ability (22,64,146,154,161) has also been demonstrated in older persons with or without OA or TKA. Thus, future analyses may examine if it is possible to predict a larger proportion of variance in predicted locomotor ability using these variables.…”

Section: Limitationsmentioning

confidence: 99%

“…Instead, previous studies have predicted self-reported functional ability after TKA and total hip arthroplasty using questionnaires (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28). Among these studies, only 4 used a questionnaire that evaluates specifically the physical function of the lower limbs (15,19,20,27).…”

Section: Introductionmentioning

confidence: 99%

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Preoperative predictors of locomotor ability two months after total knee arthroplasty for severe osteoarthritis

Parent

Moffet

2003

Arthritis & Rheumatism

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Objective. To identify preoperative predictors of locomotor ability 2 months after total knee arthroplasty (TKA). Methods. Sixty-five participants scheduled for a first TKA were recruited. The dependent variable was the distance covered during the 6-minute gait test 2 months after TKA. The independent variables, measured before surgery, were grouped into 3 categories: 1) personal; 2) organic system, and 3) capability variables. Multiple regression analyses were conducted to determine the best predictors of the dependent variable. Modified cross-validation of the model combining predictors from the three categories was obtained with 10 random samples derived from the original cohort by resampling with replacement. Results. Predictors were identified in the 3 categories: 1) gender, number of comorbidities, body mass index, 2) knee pain, flexion and strength, lower limb mechanical power, and 3) preoperative 6-minute gait distance. When these variables were modeled together only the preoperative 6-minute gait distance and knee pain and flexion remained significant (adjusted R 2 ‫؍‬ 0.66). Conclusion. Using variables easily measured before surgery, it is possible to predict with good accuracy locomotor ability 2 months after TKA.

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Section: Discussionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Section: Limitationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preoperative predictors of locomotor ability two months after total knee arthroplasty for severe osteoarthritis

Parent

Moffet

2003

Arthritis & Rheumatism

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“…It has long been recognized that pain is a complex sensory and emotional experience (111), and therefore requires consideration of the environmental processes and psychological and social factors that mediate an individual's response if it is to be fully understood (112). A number of studies support the importance of psychological factors in understanding OA pain (113), and it has been reported that pessimism is associated with poor physical outcomes (114).…”

Section: Psychological Factorsmentioning

confidence: 99%

The sources of pain in osteoarthritis: a pathophysiological review

2014

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summaryThe pain of osteoarthritis (OA) has multifaceted etiologies within and outside the joint. It is believed to be driven by both nociceptive and neuropathic mechanisms, as well as abnormal excitability in the pain pathways of the peripheral and central nervous system. Inflammation in the joint triggers a cascade of events that leads to peripheral sensitization, increased sensitivity of nociceptive primary afferent neurons, and hyperexcitability of the nociceptive neurons in the central nervous system. Pain receptors have been found in the synovium, ligaments, capsule, subchondral bone and surrounding tissues, with the exception of articular cartilage. The bone-related causes of pain in OA include subchondral microfractures, bone stretching with elevation of the periosteum due to osteophyte growth, bone remodeling and repair, bone marrow lesions, and bone angina caused by decreased blood flow and increased intra-osseous pressure. Central factors alter pain processing by setting the gain in such a way that, when a peripheral input is present, it is processed against a background of central factors that can enhance or diminish the experience of pain. As a complex phenomenon with a strong subjective component, pain can also be influenced by the nature of the underlying disease, personal predisposition (biological and psychological), and environmental and psychosocial factors. This review examines the current literature regarding the sources and mechanisms of pain in OA.

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“It's there and I'm stuck with it”: Patients' experiences of chronic pain following total knee replacement surgery

Jeffery

Wylde

Blom

et al. 2011

Arthritis Care & Research

109

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Cognitive representations of illness and functional and affective adjustment following surgery for osteoarthritis

Cited by 95 publications

References 26 publications

Preoperative predictors of locomotor ability two months after total knee arthroplasty for severe osteoarthritis

Preoperative predictors of locomotor ability two months after total knee arthroplasty for severe osteoarthritis

The sources of pain in osteoarthritis: a pathophysiological review

“It's there and I'm stuck with it”: Patients' experiences of chronic pain following total knee replacement surgery

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