Racial Differences in Performance-Based Function and Potential Explanatory Factors Among Individuals With Knee Osteoarthritis

Does Physical Activity Confound Race Differences in Osteoarthritis-Related Functional Limitation?

OBJECTIVE

This study sought to determine the extent to which physical activity confounds the relation between race and the incidence of osteoarthritis (OA)-related functional limitation.

METHODS

OA Initiative study participants with or at increased risk of knee OA who wore an accelerometer were included. Race was self-reported. Average time spent in moderate to vigorous physical activity (minutes per day) based on ActiGraph uniaxial accelerometer data was assessed. Functional limitation was based on the following: (1) inability to achieve a community walking speed (1.2 m/s) standard, (2) slow walking speed (<1.0 m/s), and (3) low physical functioning based on a Western Ontario and McMaster Universities OA Index (WOMAC) physical function score greater than 28 of 68.

RESULTS

African American (AA) participants (n = 226), compared with White participants (n = 1348), had a higher likelihood of developing functional limitation based on various measures. When adjusted for time in moderate to vigorous physical activity, the association between AA race and inability to walk a community walking speed slightly decreased (from relative risk [RR] 2.15, 95% confidence interval [95% CI] 1.64-2.81, to RR 1.99, 95% CI 1.51-2.61). Association between AA race and other measures of functional limitation mildly decreased (slow walking speed: from RR 2.06, 95% CI 1.40-3.01, to RR 1.82, 95% CI 1.25-2.63; low physical functioning: from RR 3.44, 95% CI 1.96-6.03, to RR 3.10, 95% CI 1.79-5.39). When further adjusted for demographic and other clinical variables, only the association between race and low physical functioning (WOMAC) significantly decreased and no longer met statistical significance.

CONCLUSION

Greater physical activity is unlikely to completely make up for race differences in OA-related functional limitation, and other barriers to health equity need to be addressed.

Identifying behavioral determinants and stage of readiness for performing knee massage among individuals with knee osteoarthritis: An observational study

OBJECTIVE

Patients who experience knee osteoarthritis or chronic knee pain can alleviate their symptoms by performing self-knee massage. Understanding the readiness and types of determinants needed to facilitate self-knee massage is needed to design effective, theory-informed interventions. The primary objective of this study was to apply the transtheoretical model of behavior change to identify how factors, which include the type of knee condition and pain level, predict an individual's readiness to adopt self-knee massage. The secondary objective employed the capability, opportunity and motivation-behavior (COM-B) model to identify relevant determinants that are predictive of an individual's readiness to undertake self-knee massage.

METHODS

An observational study design was used to recruit individuals with knee osteoarthritis (n = 270) and chronic knee pain (n = 130). Participants completed an online survey that assessed the transtheoretical model of behavior change stages, COM-B determinants (capability, opportunity and motivation), along with self-administered massage behavior. Multivariate analysis of covariance and structural equation modeling were used to test the primary and secondary objective, respectively.

RESULTS

Participants who had knee osteoarthritis scored higher on the action stage compared to those with chronic pain (P = 0.003), and those who experienced greater level of pain scored higher in the contemplation (P < 0.001) and action phases (P < 0.001) of performing knee massage compared to those with milder pain. The COM-B structural equation model revealed self-administered knee massage to be predicted by capability (β = 0.31, P = 0.004) and motivation (β = 0.29, P < 0.001), but not opportunity (β = -0.10, P = 0.39). Pain level predicted motivation (β = 0.27, P < 0.001), but not capability (β = 0.09, P = 0.07) or opportunity (β = 0.01, P = 0.83). Tests for mediating effects found that determinants of COM-B (motivation and capability) mediate between pain level and self-administered massage behavior (β = 0.10, P = 0.002).

CONCLUSION

Clinicians and researchers can expect that patients diagnosed with knee osteoarthritis or who have chronic knee pain are ready (action stage) or are considering the behavior (contemplation stage) of self-knee massage. Individuals who report having knee osteoarthritis or chronic knee pain should be coached to develop the skills to perform self-knee massage and helped to develop the motivation to carry out the therapy. Please cite this article as: Nemati D, Munk N, Kaushal N. Identifying behavioral determinants and stage of readiness for performing knee massage among individuals with knee osteoarthritis: an observational study. J Integr Med. 2024; 22(1): 54-63.

Cultural Framing and the Impact On Acute Pain and Pain Services

PURPOSE OF REVIEW

Optimal treatment requires a thorough understanding of all factors contributing to pain in the individual patient. In this review, we investigate the influence of cultural frameworks on pain experience and management.

RECENT FINDINGS

The loosely defined concept of culture in pain management integrates a predisposing set of diverse biological, psychological and social characteristics shared within a group. Cultural and ethnic background strongly influence the perception, manifestation, and management of pain. In addition, cultural, racial and ethnic differences continue to play a major role in the disparate treatment of acute pain. A holistic and culturally sensitive approach is likely to improve pain management outcomes, will better cover the needs of diverse patient populations and help reduce stigma and health disparities. Mainstays include awareness, self-awareness, appropriate communication, and training.

Quantifying Mediators of Racial Disparities in Knee Osteoarthritis Outcome Scores: A Cross-Sectional Analysis

Studies on symptomatic osteoarthritis suggest that Black patients report worse pain and symptoms compared with White patients with osteoarthritis. In this study, we aimed to quantify the relationship among variables such as overall health and socioeconomic status that may contribute to disparities in patient-reported outcomes.

Racial/Ethnic, Socioeconomic, and Geographic Disparities in the Epidemiology of Knee and Hip Osteoarthritis

It is estimated that 32.5 million US adults have clinical osteoarthritis (OA), with the most common sites being knee and hip. OA is associated with substantial individual and societal costs. Race/ethnicity, socioeconomic status (SES), and geographic variations in the prevalence of knee and hip OA are well established around the world. In addition, clinical outcomes associated with hip and knee OA differ according to race/ethnicity, SES, and geography. This variation is likely multifactorial and may also reflect country-specific differences in health care systems. The interplay between different factors, such as geography, SES, and race/ethnicity, is difficult to study.

Racial Differences in Pain and Function Following Knee Arthroplasty: A Secondary Analysis From a Multicenter Randomized Clinical Trial

OBJECTIVE

The assessment of racial differences in pain and function outcome following knee arthroplasty (KA) has received little attention despite very substantial literature exploring a variety of other prognostic factors. The present study was undertaken to determine whether race was associated with KA outcome after accounting for potential confounding factors.

METHODS

We conducted a secondary analysis of a randomized clinical trial of 384 participants with moderate-to-high pain catastrophizing who underwent KA. Preoperative measures included race/ethnicity status as well as a variety of potential confounders, including socioeconomic status, comorbidity, and bodily pain. Outcome measures were Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain and function scales as well as performance measures. Linear mixed-effects models compared outcomes over a 1-year follow-up period for African American versus non-African American participants.

RESULTS

WOMAC pain scores differences for African American versus non-African American participants averaged ~2 points in unadjusted analyses and 1-1.5 points in adjusted analyses. In adjusted analyses, follow-up WOMAC function scores differed by 6 points for African Americans compared to non-African Americans (P = 0.002).

CONCLUSION

African Americans generally had worse pain, function, and performance prior to KA and worse scores after surgery, but differences were small and attenuated by ~25-50% after adjustment for potential confounding. Only WOMAC function scores showed clinically important postsurgical differences in adjusted analyses. Clinicians should be aware that after adjustment for potential confounders, African Americans have approximately equivalent outcomes compared to others, with the exception of WOMAC function score.

Black American older adults' motivation to engage in osteoarthritis treatment recommendations for pain self-management: A mixed methods study

BACKGROUND

Osteoarthritis is a long-term condition, and four core treatments are recommended to minimize the interference of pain and symptoms on their daily function. However, older Black Americans have traditionally been at a disadvantage in regard to knowledge of and engagement in chronic disease self-management and self-care. Surprisingly, minimal research has addressed understanding motivational factors key to self-management behaviors. Thus, it is important to understand if older Black Americans' self-management is supported by current recommendations for the management of symptomatic osteoarthritis and what factors limit or motivate engagement in recommended treatments.

OBJECTIVE

Our objectives are to: (1) identify stage of engagement in four core recommended treatments for osteoarthritis, (2) describe the barriers and motivators to these recommended treatments, and (3) construct an understanding of the process of pain self-management motivation.

DESIGN

A mixed-methods concurrent parallel design.

SETTING

Participants were recruited from communities in northern Louisiana, USA.

PARTICIPANTS

Black Americans (≥50 years of age) with clinical osteoarthritis and/or provider-diagnosed osteoarthritis were enrolled. One hundred ten participants completed the study, and 18 of these individuals were also interviewed individually.

METHODS

Data were collected using in-person surveys and interviews. Over a period of 11 months, close- and open-ended surveys and in-depth interviews were conducted with participants. Descriptive statistics describe utilization/engagement level as well as barriers and motivators of recommended treatments for non-surgical osteoarthritis. Content and thematic analyses of interviews summarized perspectives on the process and role of motivation in pain self-management.

RESULTS

Overall, engagement levels in treatments ranged from very low to high. Over 55% of older Black Americans were actively engaged in two of the recommended treatments: land-based exercise and strength training. Major motivators included reduction in pain and stiffness and maintenance of mobility and good health. The majority of participants were not using water-based exercise and self-management education. Primary barriers were lack of access, time, and knowledge of resources.

CONCLUSIONS

In order to maximize the benefits of osteoarthritis pain self-management, older Black Americans must be equipped with the motivation, resources, information and skills, and time to engage in recommended treatment options. Their repertoire of behavioral self-management did not include two key treatments and is inconsistent with what is recommended, predominantly due to barriers that are difficult to overcome. In these cases, motivation alone is not optimal in promoting self-management. Providers, researchers, and community advocates should work collaboratively to expand access to self-management resources, particularly when personal and community motivation are high.