EULAR recommendations for the non-pharmacological core management of hip and knee osteoarthritis

Pain treatment options for osteoarthritis

Osteoarthritis is one of the most common diseases of the joints and spine and is characterized by degenerative changes starting in the cartilage. Joint changes cause pain, stiffness, swelling, and a loss of normal joint function. Several international recommendations address the choice of treatment methods for osteoarthritis. However, because there is still no effective causal treatment leading to a remission of the disease, this is a complex issue. Even the possibilities of effective but safe treatment of pain, which is the most common problem accompanying osteoarthritis, are very limited. All current international recommendations for the treatment of osteoarthritis agree on the crucial role of non-pharmacological treatment and the choice of a comprehensive approach to the treatment of osteoarthritis. Pharmacological treatment includes non-opioid analgesics, opioids, symptomatic slow-acting osteoarthritis drugs, or intra-articular corticosteroids. A new trend is to maximize the potential of existing analgesics by combining them. Using drugs from different classes with complementary mechanisms of action provides a better opportunity for effective analgesia at reduced doses of individual agents. The use of fixed combinations is also advantageous.

[Translation of the 2018 EULAR recommendations for physical activity in people with inflammatory arthritis and osteoarthritis and linguistic validation in German-speaking countries with healthcare professionals]

BACKGROUND

Regular physical activity is beneficial for people with rheumatic diseases and one of the cornerstones in its management. Based on the international recommendations of the World Health Organization for the general population, the "2018 EULAR recommendations for physical activity in people with inflammatory arthritis and osteoarthritis" provide evidence-based recommendations on the prescription, performance, and implementation of physical activity exercises in this population for the first time.

AIM

Translation of the 2018 EULAR recommendations into German and linguistic validation in Germany, Austria and Switzerland.

METHODS

A professional translation of the EULAR recommendations into the German language was performed and revised by German-speaking experts from all three countries. The translation was validated by healthcare professionals consisting of rheumatologists, occupational therapists, physiotherapists, nurses, and medical assistants in a field test. In each of the three countries, eight structured interviews were conducted on comprehensibility, wording, completeness, and feasibility. The experts then discussed changes until consensus was reached and indicated the level of agreement with the final translation.

RESULTS

The translation of the EULAR recommendations was substantially revised. Based on the results of the cognitive test, formulations were adapted in order to increase comprehensibility. The level of agreement between 10 (SD 0.0) and 8.9 (SD 1.5) was very high.

DISCUSSION

The final German version of the EULAR recommendations is comprehensible and accepted across all three German-speaking countries. It can help to improve the structure and clarity of the handling of physical activity and promote physical activity for healthcare providers and patients.

Co-design of the web-based ‘My Knee’ education and self-management toolkit for people with knee osteoarthritis

Objective

Describe the co-design process and learnings related to developing the web-based Translating Research Evidence and Knowledge (TREK) ‘My Knee’ education and self-management toolkit for people with knee osteoarthritis.

Co-design process

Stage (i): Understand and define; systematically reviewed education interventions in published trials; appraised web-based information about knee osteoarthritis; and used concept mapping to identify education priorities of people with knee osteoarthritis and physiotherapists. Stage (ii): Prototype; created a theory-, guideline- and evidence-informed toolkit. Stage (iii): Test and iterate; completed three co-design workshops with end-users (i.e., people with knee osteoarthritis and health professionals); plus an expert review.

Results

The toolkit is available at myknee.trekeducation.org. Stage (i) identified the need for more accurate and co-designed resources to address broad education needs generated during concept mapping, including guidance on surgery, dispelling common misconceptions and facilitating engagement with exercise therapy and weight management. A theory- and research-informed prototype was created in Stage (ii) to address broad learning and education needs. Stage (iii) co-design workshops ( n =  15 people with osteoarthritis and n =  9 health professionals) informed further content creation and refinement, alongside improvements to optimise usability. Expert opinion review ( n =  8) further refined accuracy and usability.

Conclusions

The novel co-design methodology employed to create the TREK ‘My Knee’ toolkit facilitated the alignment of the content and usability to meet the broad education needs of people with knee osteoarthritis and health professionals. This toolkit aims to improve and facilitate engagement with guideline-recommended first-line care for people with knee osteoarthritis. Future work will determine its effectiveness in improving clinical outcomes in this population.

Who are likely to benefit from the Good Life with osteoArthritis in Denmark (GLAD) exercise and education program? An effect modifier analysis of a randomised controlled trial

OBJECTIVE

To identify contextual factors that modify the treatment effect of the 'Good Life with osteoArthritis in Denmark' (GLAD) exercise and education programme compared to open-label placebo (OLP) on knee pain in individuals with knee osteoarthritis (OA).

METHODS

Secondary effect modifier analysis of a randomised controlled trial. 206 participants with symptomatic and radiographic knee OA were randomised to either the 8-week GLAD programme (n = 102) or OLP given as 4 intra-articular saline injections over 8 weeks (n = 104). The primary outcome was change from baseline to week 9 in the Knee injury and Osteoarthritis Outcome Score questionnaire (KOOS) pain subscale (range 0 (worst) to 100 (best)). Subgroups were created based on baseline information: BMI, swollen study knee, bilateral radiographic knee OA, sports participation as a young adult, sex, median age, a priori treatment preference, regular use of analgesics (NSAIDs or paracetamol), radiographic disease severity, and presence of constant or intermittent pain.

RESULTS

Participants who reported use of analgesics at baseline seem to benefit from the GLAD programme over OLP (subgroup contrast: 10.3 KOOS pain points (95% CI 3.0 to 17.6)). Participants with constant pain at baseline also seem to benefit from GLAD over OLP (subgroup contrast: 10.0 points (95% CI 2.8 to 17.2)).

CONCLUSIONS

These results imply that patients who take analgesics or report constant knee pain, GLAD seems to yield clinically relevant benefits on knee pain when compared to OLP. The results support a stratified recommendation of GLAD as management of knee OA.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT03843931. EudraCT number 2019-000809-71.

[Lay version of the 2018 EULAR recommendations for physical activity in people with inflammatory arthritis and osteoarthritis : Translation into German and linguistic validation in German-speaking countries with people affected]

BACKGROUND

Physical activity and exercise are beneficial for people with rheumatic diseases; however, recommendations for the management of rheumatoid arthritis (RA), spondyloarthritis (SpA) and hip- and knee osteoarthritis (HOA/KOA) are usually unspecific with respect to mode and dose of exercise. This is why the 2018 EULAR recommendations for physical activity in people with inflammatory arthritis and osteoarthritis were formulated. The recommendations consist of 4 overarching principles and 10 recommendations. These were also published as a lay version in the English language.

AIM

Translation of the lay version into German and its linguistic validation in Austria, Germany and Switzerland.

METHODS

A professional translation was reviewed by the authors, including people with, RA, SpA, HOA/KOA from the three German-speaking countries, which provided a prefinal lay version. Subsequently, eight interviews with people with RA, SpA, HOA/KOA were conducted in each country to evaluate understandability, wording, completeness and feasibility of the prefinal lay version. Finally, the authors, i.e. those with RA, SpA, and osteoarthritis, anonymously rated their agreement to the final lay version on a 0-10 scale.

RESULTS

The professional translation was substantially revised by the authors and based on the interviews. Formulations were adapted to increase readability and understandability and specify statements. Comments that would have changed content or structure were not considered. Average agreement with the particular recommendations was between 10 (SD 0) and 7.6 (SD 1.67).

DISCUSSION

For people with RA/SpA/HOA/KOA the EULAR physical activity recommendations should be available in their mother language. The final German lay version is valid and accepted across all three German-speaking countries. Thus, the physical activity recommendations can be provided to people with rheumatic diseases in an understandable and feasible way.

Effect of Combined Exercise Program on Lower Extremity Alignment and Knee Pain in Patients with Genu Varum

This study aimed to assess the effect of a combined exercise program on lower-extremity alignment and knee pain in patients with genu varum. Forty-seven middle-aged women with knee pain and genu varum were randomly divided into the exercise (EG, n = 24) and control (CG, n = 23) groups. The exercise group underwent a combined exercise program lasting 60 min in one session, three times a week for 12 weeks. Knee-to-knee length (KTKL), hip-knee-ankle angle (HKAA), hip inclination angle (HIA), and medial proximal tibial angle (MPTA) were assessed to evaluate lower-extremity alignment. To evaluate knee pain, the short form-McGill Pain Questionnaire (SF-MPQ) were used. There was a significant difference between the groups, and a decrease of 16% in KTKL (from 6.48 ± 1.26 cm to 5.47 ± 1.21 cm) was shown in EG. Other variables, including HKAA, HIA, and MPTA on the right side, showed significant differences between pre- and post-intervention in EG (p < 0.01, p < 0.01, and p < 0.01, respectively). SF-MPQ score improved with 45% from 18.75 ± 1.64 to 10.33 ± 2.47 after exercise intervention in EG. These results suggest that the combined exercise program, including strength and neuromuscular exercises, is an effective intervention for improving lower-extremity alignment and knee pain in middle-aged women with genu varum.

Quality of clinical practice guidelines relevant to rehabilitation of knee osteoarthritis: A systematic review

Objective

This systematic review summarized the rehabilitation recommendations for treating and managing knee osteoarthritis (OA) in practice guidelines and evaluated their applicability and quality using the Appraisal of Guidelines for Research and Evaluation (AGREE) II instrument.

Data Sources

PubMed, the Cochrane Library, EMBASE, CINAHL, PEDro, Guideline central, Guideline International Network and Agency for Healthcare Research and Quality (AHRQ) were used to search for relevant studies published between 1 January 2008 and 31 May 2022.

Methods

AGREE II was used to evaluate the included guidelines quality, SPSS 25.0 statistical software was used for data analysis, and the intra-group correlation coefficient value was calculated to verify the consistency between the raters. The two-way random effects model was used to calculate concordance scores, and each domain's total scores were calculated. Additionally, the median and interquartile range for domain and total scores were calculated.

Results

Twenty-four guidelines recommending knee OA rehabilitation were included. Inter-rater consistency evaluation ranged from 0.62 to 0.90. The domains where the guideline's overall and rehabilitation parts scored highest and lowest were scope and purpose (domain 1) and applicability (domain 5), respectively. The highly recommended rehabilitation opinions included aerobic exercise programs (21/24), weight control (16/24), self-education and management (16/24), gait/walking aids (7/24), and tai chi (6/24). However, the orthopedic insole and hot/cold therapy roles remain controversial.

Conclusion

The clinical practice guidelines' overall quality for knee OA rehabilitation is good; however, the applicability is slightly poor. Therefore, we should improve the promoting factors and hindering factors, guideline application recommendations, tools, and resources when developing relevant guidelines.

Comparison of a Group-/Home-Based and a Weight-Machine-Based Exercise Training for Patients with Hip or Knee Osteoarthritis-A Secondary Analysis of Two Trial Interventions in a Real-World Context

This study aimed to compare an individual weight-machine-based strengthening program (MbT) with a group-/homebased training offering strengthening/functional exercises (GHT) in a general health care setting. A total of 657 participants (GHT = 521, MbT = 136) suffering from hip/knee OA were included and analysed with a pre-post design (baseline (T0)/3-months (T1)). Primary outcomes were pain and physical functioning (Western Ontario and McMaster Universities Osteoarthritis Index, range 0-10). Additionally, adherence and perceived patient benefit were measured (T1). Data were analysed with linear mixed models (time, treatment, baseline pain/physical impairment severity) adjusted for patient characteristics. No significant between-group differences in pain reduction/functional improvements (time*treatment*baseline pain/physical impairment severity, pain/function: n.s.; time*treatment, pain: p = 0.884, function: p = 0.067). Within-group improvements were dependent on baseline severity: Higher severity levels demonstrated larger changes from baseline. Perceived patient-benefit (very high to high, GHT: 78%, MbT: 92%) and exercise adherence (Dropouts T1: GHT: 27.8%, MbT: 16.2%; adherence to supervised sessions: GHT: 89%, MbT: 92%) was slightly better in the MbT. In summary, both MbT and GHT, showed positive results for patients with at least moderate disease symptoms. Findings for physical functioning, perceived patient-benefit, exercise adherence hint towards a superiority of MbT. Individual preferences should be considered when prescribing exercise therapy. Trial registration: (1) German Clinical Trial Register DRKS00009251. Registered 10 September 2015. (2) German Clinical Trial Register DRKS00009257. Registered 11 September 2015.

Resolution of the consensus of the Russian Federation experts on the diagnosis and treatment of osteoarthritis, 2022

Osteoarthritis (OA) is the most common joint disease due to the increasing life expectancy of the world's population. Every 2nd patient over the age of 50 suffers from knee or hip OA, and this is directly related to the increased burden on healthcare. Accumulated data on the comorbid profile of patients with OA dictate the need to identify disease phenotypes in order to provide personalized care. Individual clinical manifestations of OA also require a differential approach: the pain treatment requires consideration of the patient's psycho-emotional profile and the possibility of involving nociceptive pathways in the process. However, due to the ambiguity of existing clinical guidelines, most experts note a number of difficulties in prescribing treatment for patients with OA.

The resolution presents an agreed opinion of experts on the algorithms for managing patients with OA, starting from the primary level, with the gradual involvement of related specialists. Some issues of a personalized approach are considered depending on the presence of comorbid pathology and the severity of individual symptoms of the disease. The prospects of the combined use of pharmacological and non-drug methods of treatment are noted; emphasis was placed on the importance of rehabilitation measures at the first level of medical care, provided to patients with OA, long before the development of structural changes.

The proposed algorithms for managing patients can be considered as the basis for future recommendations for managing patients with this pathology.

Effect of extracorporeal shock wave therapy on pain and function in patients with knee osteoarthritis: a systematic review with meta-analysis and grade recommendations

Objective

To investigate extracorporeal shock wave therapy effect on knee osteoarthritis compared to a sham or kinesiotherapy by a systematic review and meta-analysis of randomized clinical trials.

Data Sources

The search was performed in: Cochrane Library, PubMed, PEDro, Web of Science, EMBASE, Scopus, LILACS, and Scielo.

Review methods

We performed the online search until October, 2022. The following terms were used (Osteoarthritis) AND (“knee joint”) AND (“Extracorporeal Shockwave Therapy”). Eligibility criteria: (1) randomized clinical trials; (2) effects comparison of shockwave therapy to a sham or kinesiotherapy in individuals with knee osteoarthritis; (3) pain and physical function as outcome variables. Risk of bias assessed using the PEDro scale. PROSPERO registration (CRD42021235597).

Results

We identified 4217 studies, and 12 were included in the qualitative synthesis and the meta-analysis, totaling 403 individuals submitted to the intervention and 331 control individuals. Compared to sham, shockwave was favored in short-term for the function outcome (SMD = −1.93; 95%CI: [−2.77; −1.09]; I² = 83%; P < 0.01). For the pain outcome, the shockwave was favored in the short (MD = −2.05; 95%CI: [−2.59; −1.51]; I² = 84%; P < 0.01), medium (MD = −3.46; 95%CI: [−4.03; −2.89]; I² = 0%; P < 0.01) and long-term (MD = −2.01; 95%CI: [−3.36; −0.65]; I² = 98%; P < 0.01). The association with kinesiotherapy was favored in the short term for the function outcome (SMD = -1.88; 95%CI: [−2.98; −0.78]; I² = 94%; P < 0.01) and favored for the pain outcome in the short (MD = −1.44; 95%CI: [−1.81; −1.07]; I² = 37%; P = 0.14), medium (MD = −1,31; 95%CI: [−1.76; −0,85]; I² = 0%; P = 0.41), and long terms (MD = −1.63; 95%CI: [−1.73; −1.52]; I² = 0%; P = 0.43).

Conclusion

Shockwave therapy may improve functionality in patients with knee osteoarthritis in the short term and pain in all follow-up moments, compared with sham. When associated to kinesiotherapy, it may improve function in the short term and pain in all follow-up time points, although improvement in pain may not be clinically significant.

Effect of Diet and Exercise on Knee Pain in Patients With Osteoarthritis and Overweight or Obesity: A Randomized Clinical Trial

IMPORTANCE

Some weight loss and exercise programs that have been successful in academic center-based trials have not been evaluated in community settings.

OBJECTIVE

To determine whether adaptation of a diet and exercise intervention to community settings resulted in a statistically significant reduction in pain, compared with an attention control group, at 18-month follow-up.

DESIGN, SETTING, AND PARTICIPANTS

Assessor-blinded randomized clinical trial conducted in community settings in urban and rural counties in North Carolina. Patients were men and women aged 50 years or older with knee osteoarthritis and overweight or obesity (body mass index ≥27). Enrollment (N = 823) occurred between May 2016 and August 2019, with follow-up ending in April 2021.

INTERVENTIONS

Patients were randomly assigned to either a diet and exercise intervention (n = 414) or an attention control (n = 409) group for 18 months.

MAIN OUTCOMES AND MEASURES

The primary outcome was the between-group difference in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) knee pain score (range, 0 [none] to 20 [severe]; minimum clinically important difference, 1.6) over 18 months, tested using a repeated-measures mixed linear model with adjustments for covariates. There were 7 secondary outcomes including body weight.

RESULTS

Among the 823 randomized patients (mean age, 64.6 years; 637 [77%] women), 658 (80%) completed the trial. At 18-month follow-up, the adjusted mean WOMAC pain score was 5.0 in the diet and exercise group (n = 329) compared with 5.5 in the attention control group (n = 316) (adjusted difference, -0.6; 95% CI, -1.0 to -0.1; P = .02). Of 7 secondary outcomes, 5 were significantly better in the intervention group compared with control. The mean change in unadjusted 18-month body weight for patients with available data was -7.7 kg (8%) in the diet and exercise group (n = 289) and -1.7 kg (2%) in the attention control group (n = 273) (mean difference, -6.0 kg; 95% CI, -7.3 kg to -4.7 kg). There were 169 serious adverse events; none were definitely related to the study. There were 729 adverse events; 32 (4%) were definitely related to the study, including 10 body injuries (9 in diet and exercise; 1 in attention control), 7 muscle strains (6 in diet and exercise; 1 in attention control), and 6 trip/fall events (all 6 in diet and exercise).

CONCLUSIONS AND RELEVANCE

Among patients with knee osteoarthritis and overweight or obesity, diet and exercise compared with an attention control led to a statistically significant but small difference in knee pain over 18 months. The magnitude of the difference in pain between groups is of uncertain clinical importance.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT02577549.

The current state of the osteoarthritis drug development pipeline: a comprehensive narrative review of the present challenges and future opportunities

In this narrative review article, we critically assess the current state of the osteoarthritis (OA) drug development pipeline. We discuss the current state-of-the-art in relation to the development and evaluation of candidate disease-modifying OA drugs (DMOADs) and the limitations associated with the tools and methodologies that are used to assess outcomes in OA clinical trials. We focus on the definition of DMOADs, highlight the need for an updated definition in the form of a consensus statement from all the major stakeholders, including academia, industry, regulatory agencies, and patient organizations, and provide a summary of the results of recent clinical trials of novel DMOAD candidates. We propose that DMOADs should be more appropriately targeted and investigated according to the emerging clinical phenotypes and molecular endotypes of OA. Based on the findings from recent clinical trials, we propose key topics and directions for the development of future DMOADs.

Physician and patient perceptions of surgical procedures for osteoarthritis of the knee in the United States, Europe, and Japan: results of a real-world study

BACKGROUND

Osteoarthritis (OA) is the most common form of arthritis, with the knee being the joint most frequently affected, and symptomatic knee OA affecting around one quarter of the general population. For patients who do not respond to non-pharmacologic or pharmacologic treatment, surgery is a recommended option. The objectives of this study were to compare the willingness of patients with knee OA to undergo surgery, together with reasons for delaying surgery, and factors affecting successful outcomes.

METHODS

A point-in-time survey was conducted in 729 primary care physicians, rheumatologists, orthopedic surgeons, and 2,316 patients with knee OA across three geographical regions: Japan, the United States (US), and Europe (EUR: France, Spain, Italy, Germany, and the United Kingdom), in order to garner their perceptions of knee surgery. Regression models were used to identify factors that might affect patients' and physicians' perceptions of surgery, including severity of OA (mild/moderate/severe), number of affected joints, surgery status, and willingness to undergo or delay surgery.

RESULTS

Baseline demographics were similar between US and EUR, although patients in Japan were more likely to be female, older, and only 7% in fulltime employment. We found that few patients with end-stage knee OA, across all regions, but particularly Japan, were willing to undergo surgery (Japan 17%, US 32%, EUR 38%), either through fear, or the lack of awareness of the risk/benefits. Moreover, surgeons are prepared to delay surgery in elderly or unwilling patients, due to their dissatisfaction with the outcome, and may defer surgery in younger patients due to the need for future revision. We also identified a disconnect between physicians, of whom over 80% consider improved functioning to be the most important outcome of surgery, and patients, who seek pain relief (Japan 60%, US 35%, EUR 14%). Since physicians across all regions considered pain reduction to be an indication of surgery success (Japan 27%, US 47%, EUR 43%), this may indicate a need for improved communication to patients on the potential benefits of surgery.

CONCLUSION

Managing the expectations of patients undergoing surgery remains an important goal in the treatment of knee OA and may help guide physician choice.

Moderate exercise protects against joint disease in a murine model of osteoarthritis

Exercise is recommended as a non-pharmacological therapy for osteoarthritis (OA). Various exercise regimes, with differing intensities and duration, have been used in a range of OA rodent models. These studies show gentle or moderate exercise reduces the severity of OA parameters while high intensity load bearing exercise is detrimental. However, these studies were largely conducted in rats or in mouse models induced by severe injury, age or obesity, whilst destabilization of the medial meniscus (DMM) in mice has become a widely accepted model due to its lower variability, moderate progression and timescale. The present study was undertaken to provide insight into the effect of moderate exercise on early joint pathology in the DMM mouse model. Exercise was induced a week after induction by forced wheel walking for three or 7 weeks. Joints were analyzed by microcomputed tomography and histology. Assessment of skeletal parameters revealed that exercise offered protection against cartilage damage after 7 weeks of exercise, and a temporary protection against osteosclerosis was displayed after 3 weeks of exercise. Furthermore, exercise modified the metaphyseal trabecular microarchitecture of the osteoarthritic leg in both time points examined. Collectively, our findings corroborate previous studies showing that exercise has an important effect on bone in OA, which subsequently, at 8 weeks post-induction, translates into less cartilage damage. Thus, providing an exercise protocol in a surgical mouse model of OA, which can be used in the future to further dissect the mechanisms by which moderate exercise ameliorates OA.

What affects the implementation of lifestyle interventions in patients with osteoarthritis? A multidisciplinary focus group study among healthcare professionals

PURPOSE

To identify factors affecting the implementation of lifestyle interventions (LIs) in patients with hip and/or knee osteoarthritis (OA) from the perspective of primary and secondary healthcare professionals (HCPs) in the Dutch healthcare system.

METHODS

Multidisciplinary focus groups were composed. Data analysis was performed following thematic analysis. The Tailored Implementation for Chronic Diseases checklist was used to guide data analysis.

RESULTS

Four focus groups meetings were conducted with 38 participating HCPs (general practitioners (or in-training), orthopedic surgeons (or in-training), physiotherapists, dieticians, a general practice assistant, lifestyle counselors, and nurse practitioners). Influencing factors were grouped into nine themes: (1) intervention factors; (2) individual HCP factors; (3) patient factors; (4) professional interactions; (5) incentives and resources; (6) capacity for organizational change; (7) social, political and legal factors; (8) patient and HCP interactions; and (9) disease factors.

CONCLUSIONS

A wide variety of factors affecting the implementation of LIs was identified in this study, where the importance of effective interdisciplinary collaboration was emphasized by the multidisciplinary group of participants. This thorough analysis of influencing factors is an important first step toward improved implementation of LIs within OA care. Further research is required to identify the most significant targets for change in daily practice.Implications for RehabilitationThe implementation of lifestyle interventions (LIs) by healthcare professionals (HCPs) in patients with hip and/or knee osteoarthritis (OA) is affected by both individual and environmental factors.The influencing factors identified in this study can support the development of interventions aimed at improving the implementation of LIs in OA care.A multilevel approach is required when developing interventions to improve the implementation of LIs in OA care.Continued efforts of both primary and secondary HCPs and policymakers are needed in order to promote the use of LIs within OA care.

The effectiveness of group education in people over 50 years old with knee pain: A systematic review and meta-analysis of randomized control trials

BACKGROUND

International guidelines recommend educational intervention to treat knee osteoarthritis. However, they do not specify the type of intervention and the effectiveness of group educational intervention for knee pain is unclear.

OBJECTIVES

We aimed to examine the effectiveness of group educational interventions for people over 50 years old with knee pain compared with a control group.

DESIGN

A systematic review and meta-analysis of randomized controlled trials (RCTs).

METHOD

We searched Medline, Cochrane Central Register of Controlled Trials, Physiotherapy Evidence Database, and Cumulative Index to Nursing and Allied Health Literature and screened for RCTs involving participants over 50 years old that reported the effects of group education on knee pain. We performed meta-analyses and evaluated the methodological quality and evidence quality using the Physiotherapy Evidence Database scale and the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system, respectively.

RESULTS

The search retrieved 1,177 studies. Seven RCTs were ultimately included, four of which were subjected to meta-analysis, showing standardized mean differences of -0.22 (95% confidence interval [CI]: -0.42 to -0.02, n = 423; I² = 0% GRADE: low). All studies included in the meta-analysis involved exercise without individualized instruction in addition to group educational intervention.

CONCLUSIONS

Group education, when delivered in addition to exercises, significantly reduces knee pain in people over 50 years old.

Effectiveness of Gamification in Knee Replacement Rehabilitation: Protocol for a Randomized Controlled Trial With a Qualitative Approach

BACKGROUND

Exergames can provide encouraging exercise options. Currently, there is limited evidence regarding home-based exergaming in the postoperative phase of total knee replacement (TKR).

OBJECTIVE

This study aimed to investigate the effects of a 4-month postoperative home-based exergame intervention with an 8-month follow-up on physical function and symptoms among older persons undergoing TKR compared with home exercise using a standard protocol. In addition, a concurrent embedded design of a mixed methods study was used by including a qualitative component within a quantitative study of exergame effects.

METHODS

This was a dual-center, nonblinded, two-arm, parallel group randomized controlled trial with an embedded qualitative approach. This study aimed to recruit 100 patients who underwent their first unilateral TKR (aged 60-75 years). Participants were randomized to the exergame or standard home exercise arms. Participants followed a custom-made exergame program independently at their homes daily for 4 months. The primary outcomes at 4 months were function and pain related to the knee using the Oxford Knee Score questionnaire and mobility using the Timed Up and Go test. Other outcomes, in addition to physical function, symptoms, and disability, were game user experience, exercise adherence, physical activity, and satisfaction with the operated knee. Assessments were performed at the preoperative baseline and at 2, 4, and 12 months postoperatively. Exergame adherence was followed from game computers and using a structured diary. Self-reported standard exercise was followed for 4 months of intervention and physical activity was followed for 12 months using a structured diary. Qualitative data on patients' perspectives on rehabilitation and exergames were collected through laddering interviews at 4 and 12 months.

RESULTS

This study was funded in 2018. Data collection began in 2019 and was completed in January 2022. The COVID-19 pandemic caused an unavoidable situation in the study for recruitment, data collection, and statistical analysis. As of November 2020, a total of 52 participants had been enrolled in the study. Primary results are expected to be published by the end of 2022.

CONCLUSIONS

Our study provides new knowledge on the effects of postoperative exergame intervention among older patients with TKR. In addition, this study provides a new understanding of gamified postoperative rehabilitation, home exercise adherence, physical function, and physical activity among older adults undergoing TKR.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03717727; https://clinicaltrials.gov/ct2/show/NCT03717727.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

RR1-10.2196/38434.

Predictive Value of Pain Sensitization Associated with Response to Exercise Therapy in Patients with Knee Osteoarthritis: A Prospective Cohort Study

PURPOSE

Knee osteoarthritis (KOA) is a degenerative disease with inflammation, becoming persistent as it progresses, resulting in reduced quality of life. Exercise is the recommended treatment for KOA; however, the extent of pain reduction with exercise is heterogeneous and the prognostic implications of baseline factors in patients undergoing exercise are still unknown. This study examined the association between the response to exercise therapy and clinical outcomes, radiologic severity, and pain sensitization, and investigated the optimal predictive value for the effectiveness of exercise.

PATIENTS AND METHODS

Demographics, radiologic severity, pressure pain threshold (PPT), and temporal summation of pain (TSP) at the knee, tibia, and forearm were assessed at baseline. The pain numeric rating scale (NRS) was assessed before and after 12 weeks of exercise. Patients were divided into responder/non-responder groups according to recommended criteria: responder, ≥30% reduction in pain; non-responder, <30% reduction in pain, and each variable was compared between the groups. The area under the curve (AUC) and cutoff points were determined by receiver operating characteristic curve analysis.

RESULTS

Sixty-five patients were categorized as responders and 26 as non-responders. In the non-responder group, baseline NRS (P<0.01), pain duration (P<0.01), and TSP at the knee (P<0.001) and tibia (P<0.05) were significantly higher, and PPT at the knee (P<0.001), tibia (P<0.001), and forearm (P<0.001) were significantly lower, than those in the responder group; however, no significant differences between groups were found in other demographics and radiologic severity. The variables that showed moderate or better predictive ability (AUC≥0.7) were PPT at the knee (cutoff points: 241.5 kPa), tibia (307.5 kPa), forearm (318.5 kPa), and TSP at the knee (15.5 mm).

CONCLUSION

Our findings suggest that pain sensitization is associated with the response to exercise therapy. Furthermore, we provide clinically predictive values for PPT and TSP in predicting the outcome to exercise in KOA.

Chronic opioid use before and after exercise therapy and patient education among patients with knee or hip osteoarthritis

OBJECTIVE

To investigate changes in opioid use after supervised exercise therapy and patient education among knee or hip osteoarthritis patients with chronic opioid use.

METHOD

In this cohort study, we linked data from the Good Life with osteoArthritis in Denmark register (GLA:D®; standardised treatment program for osteoarthritis; January 2013 to November 2018) with national health registries. Among 35,549 patients, 1,262 were classified as chronic opioid users based on amount and temporal distribution of dispensed opioids the year before the intervention. We investigated changes in opioid use, measured as mg oral morphine equivalents (OMEQs), from the year before the intervention to the year after using generalized estimating equations.

RESULTS

We found a 10% decrease in mg OMEQs from the year before to the year after the intervention (incidence rate ratio [IRR]: 0.90, 95% confidence interval [CI]: 0.86, 0.94). Additional analyses suggested this decrease to be mainly attributable to regulatory actions targeting opioid prescribing during the study period (IRR among patients participating in the intervention before: 0.98 [95% CI: 0.89, 1.07] vs after: 0.83 [0.74, 0.93] regulatory actions). In a random general population sample of matched chronic opioid users, a similar opioid use pattern was observed over time, further supporting the impact of regulatory actions on the opioid use in the study population.

CONCLUSION

Among patients with knee or hip osteoarthritis and chronic opioid use, a standardised treatment program did not change opioid use when regulatory changes in opioid prescribing were taken into account.

Environmental Risk Factors for Osteoarthritis: The Impact on Individuals with Knee Joint Injury

Osteoarthritis is a debilitating chronic condition involving joint degeneration, impacting over 300 million people worldwide. This places a high social and economic burden on society. The knee is the most common joint impacted by osteoarthritis. A common cause of osteoarthritis is traumatic joint injury, specifically injury to the anterior cruciate ligament. The purpose of this review is to detail the non-modifiable and modifiable risk factors for osteoarthritis with particular focus on individuals after anterior cruciate ligament injury. After reading this, health care providers will better comprehend the wide variety of factors linked to osteoarthritis.

Does land-based exercise-therapy improve physical activity in people with knee osteoarthritis? A systematic review with meta-analyses

PRIMARY OBJECTIVE

Investigate the effects of land-based exercise-therapy on physical activity in people with knee osteoarthritis (KOA).

DESIGN

Systematic review and meta-analysis of randomised or quasi-randomised trials investigating land-based exercise-therapy on physical activity, fitness, and general health in people with KOA. We updated a 2013 Cochrane review search on exercise-therapy for KOA in April 2021 and applied the Cochrane Risk-of-Bias Tool 1.0 to included articles. Standardised mean differences (SMDs) and 95% confidence intervals (CI) were calculated. GRADE was used to assess certainty of the evidence.

RESULTS

Twenty-eight randomised controlled trials (2,789 participants) evaluating the effects of resistance-training (n = 10), walking (n = 6) and mixed-exercise programs (n = 7) were identified. Low to moderate certainty evidence indicated small increases in physical activity for exercise-therapy compared to non-exercise interventions in the short-term (SMD, 95% CI = 0.29, 0.09 to 0.50), but not the medium- (0.03, -0.11 to 0.18) or long-term (-0.06, -0.34 to 0.22). Low certainty evidence indicated large increases in physical activity for walking programs (0.53, 0.11 to 0.95) and mixed-exercise programs (0.67, 0.37 to 0.97) compared to non-exercise interventions in the short-term. Low certainty evidence indicated moderate and small increases in physical activity for resistance-training combined with education focused on pain coping skills and self-efficacy compared to education alone at medium-term follow-up (0.45, 0.19 to 0.71).

CONCLUSION

Walking and mixed-exercise, but not resistance-training, may improve physical activity in people with KOA in the short-term. Combining resistance-training with education may increase physical activity in the medium-, but not the long-term, highlighting the potential importance of developing more effective longer-term interventions for people with KOA. Future studies evaluating land-based exercise-therapy are encouraged to include physical activity outcomes and longer-term follow-up to increase the certainty of evidence.

Physical therapy as a promising treatment for osteoarthritis: A narrative review

Osteoarthritis (OA) is the most prevalent joint disease and a leading cause of disability in older adults. With an increasing population ageing and obesity, OA is becoming even more prevalent than it was in previous decades. Evidence indicates that OA is caused by the breakdown of joint tissues from mechanical loading and inflammation, but the deeper underlying mechanism of OA pathogenesis remains unclear, hindering efforts to prevent and treat this disease. Pharmacological treatments are mostly related to relieving symptoms, and there is no drug for radical cure. However, compelling evidence suggests that regular practice of resistance exercise may prevent and control the development of several musculoskeletal chronic diseases including OA, which may result in improved quality of life of the patients. In this review, we introduced the current understanding of the mechanism and clinical treatments of OA pathogenesis. We also reviewed the recent study of physical therapy in the treatment of skeletal system disorders, especially in OA. Finally, we discuss the present challenges and promising advantages of physical therapy in OA treatment.

Mendelian Randomization Studies of Lifestyle-Related Risk Factors for Osteoarthritis: A PRISMA Review and Meta-Analysis

Risk factors for osteoarthritis (OA) often exert effects over protracted time-courses. Mendelian randomization (MR) studies therefore have an advantage over conventional observational studies when studying the causal effect of long-term lifestyle-related risk factors on OA. However, given the heterogeneous design of existing MR studies on OA, the reported causal estimates of these effects remain inconsistent, thus obscuring the true extent of the biological effects of OA lifestyle-risk factors. We conducted a PRISMA systematic review and specifically included MR studies that investigated the causal effect between lifestyle-related risk factors and OA, where causal estimates for various lifestyle factors were pooled for meta-analysis. Quality of studies was assessed according to STROBE-MR guidelines. A total of 1576 studies were evaluated and 23 were included. Overall, the studies included were of high quality and had a low risk of bias. Our meta-analysis demonstrates the positive causal effect of BMI (ORIVW-random effects 1.49 [1.23-1.80]) and negative causal effects of serum calcium (ORIVW-random effects 0.69 [0.57-0.83]) and LDL levels (ORIVW-random effects 0.93 [0.90-0.96]) on OA. Despite the heterogeneous designs and estimates of causal effects provided by various MR studies, our meta-analysis suggests that lifestyle-related risk factors in the form of BMI, serum calcium, and LDL have true biological effects on the development of OA.

New smokeless moxibustion for knee osteoarthritis: A study protocol for a multicenter, single-blind, randomized controlled trial

INTRODUCTION

Knee osteoarthritis (KOA) is a chronic inflammatory disease with high morbidity and disability. As the aging and obese population increase, so will the medical services for this disease. The purpose of this study is to compare the clinical efficacy of herbal activated carbon smokeless moxibustion and traditional moxibustion in the treatment of KOA and to determine the clinical efficacy of herbal activated carbon smokeless moxibustion in the treatment of KOA.

METHODS/DESIGN

This is a multicenter, two parallel-group, single-blind, randomized controlled trial. Eighty-eight subjects with KOA (Kellgren Lawrence grade II or III) will be recruited and randomly treated with smokeless moxibustion or traditional moxibustion in the ratio of 1:1. The smokeless moxibustion group will use plant herbal activated carbon smokeless moxa cone. The traditional moxibustion group will be treated with pure moxa cone. Subjects in both groups will receive treatment at the affected knee(s) at the acupuncture point ST35, EX-LE2, and EX-LE4. Subjects in both groups will receive 3 sessions per week of moxibustion for 4 weeks. The primary outcome are changes in the Western Ontario and McMaster Universities Osteoarthritis Index pain scores from baseline to week 24. Secondary outcomes include visual analog scale, 50 yards fast walking time, short-form heath survey 36, overall clinical efficacy evaluation, self-assessment of safety, treatment credibility and expectancy, and cytokines related to osteoarthritis in serum.

DISCUSSION

This randomized single-blind controlled trial takes traditional moxibustion as the control group to provide strict evidence for the clinical efficacy and safety of herbal activated carbon smokeless moxibustion in the treatment of KOA.

A recommended exercise program appropriate for patients with knee osteoarthritis: A systematic review and meta-analysis

Background: Knee osteoarthritis (KOA) is a common degenerative disease. Recommended first-line management includes exercise. However, there is still no standard recommendation for the appropriate exercise program for patients with KOA.

Purpose: This study aims to compare the effects of a land-based exercise program with high vs. uncertain compliance with recommendations among people with KOA in pain, function, and stiffness.

Methods: From January 2000 to January 2022, PubMed, EBSCO, Sport-discuss, Medline, and Web of Science were searched. A comprehensive review of meta-analyses of land-based exercise programs with exercise prescriptions was done in symptomatic individuals with KOA. The Cochrane Collaboration’s standards were followed for study selection, eligibility criteria, data extraction, and statistics, and the Cochrane Collaboration’s tool was used to assess the risk of bias. Review Manager 5 software was used to extract the baseline mean and follow-up values, as well as the accompanying standard deviation, to calculate the standardized mean difference (SMD). In meta-analyses, SMD was calculated for pain outcomes, self-reported physical function, and stiffness. The effects of the outcomes on the subgroups of studies were compared. A fixed- or random-effects model was used in group research studies with comparable outcomes.

Results: There were 15 studies with a total of 1,436 participants. Compliance with the ACSM recommendations was categorized as “high” in five cases and “uncertain” in nine others. The SMD for pain was −0.31 (95% CI −0.47, −0.14) in the subgroup with a high ACSM compliance ratio and −0.55 (95% CI −0.69, −0.41) in the subgroup with uncertain ACSM compliance. For physical function, in the high-compliance group, the SMD was −0.21 (95% CI −0.38, −0.05), while in the uncertain-compliance group, it was −0.61 (95 % CI −0.82, −0.40). The SMD was −0.40 (95 % CI −0.61, −0.19) for stiffness and high compliance with ACSM. The SMD was −0.29 (95% CI −0.66, 0.07) for study interventions with uncertain compliance.

Conclusion: The results showed that the land-based training program significantly improved pain, physical function, and stiffness in KOA patients compared to controls. Exercise interventions with high adherence to ACSM recommendations differed significantly only in stiffness measures compared with the uncertain-compliance group.

Clinical Trial Registration:https://www.crd.york.ac.uk/prospero/#recordDetails, identifier PROSPERO (ID CRD42022311660)

Effect of a mHealth exercise intervention compared with supervised exercise therapy in osteoarthritis management: protocol of the DigiOA trial

INTRODUCTION

Soaring prevalence of hip and knee osteoarthritis (OA) inflicts high costs on the healthcare system. A further rise in the OA incidence is expected, generating increased demand of care potentially challenging accessibility and threatening to overwhelm the healthcare system. Innovative solutions that may improve accessibility to recommended OA care for patients in primary care and maintain healthcare sustainability are warranted. Digitalising home exercise therapy may be one such solution. The primary aim of this study is to evaluate the effectiveness of a mobile health app providing digitalised home exercises, compared with supervised exercise therapy in patients with OA. Second, we will evaluate the cost-efficiency of the intervention and explore potential differences in outcome and adherence to exercises in the experimental treatment group.

METHODS AND ANALYSIS

A two-armed non-inferiority randomised controlled trial will be conducted. In total, 156 patients with hip and/or knee OA will be recruited from physiotherapy clinics in primary care in Norway. Following patient education, patients will be randomised to either 6 weeks of standard treatment (2 weekly sessions of supervised exercise therapy) or experimental treatment (home exercises via the Virtual Training (VT) app). Primary outcome is the proportion of Outcome Measures in Rheumatology-Osteoarthritis Research Society International (OMERACT-OARSI) responders at 6 weeks. Secondary outcomes include physical performance, patient-reported outcomes related to pain, fatigue, disease activity, physical function, mental health, health related quality of life, self-efficacy, utilisation of healthcare services and medication, digital competence and use of apps.

ETHICS AND DISSEMINATION

Patients will sign an informed consent form before participating in the trial. Approval has been granted by the Regional Ethics Committee (201105) and Data Protection Officer at Diakonhjemmet Hospital (00221). Patient research partners will contribute in all parts of the study.

TRIAL REGISTRATION NUMBER

NCT04767854.

Effect of motion control versus neutral walking footwear on pain associated with lateral tibiofemoral joint osteoarthritis: a comparative effectiveness randomised clinical trial

OBJECTIVES

To determine if motion control walking shoes are superior to neutral walking shoes in reducing knee pain on walking in people with lateral knee osteoarthritis (OA).

DESIGN

Participant-blinded and assessor-blinded, comparative effectiveness, superiority randomised controlled trial.

SETTING

Melbourne, Australia.

PARTICIPANTS

People with symptomatic radiographic lateral tibiofemoral OA from the community and our volunteer database.

INTERVENTION

Participants were randomised to receive either motion control or neutral shoes and advised to wear them >6 hours/day over 6 months.

PRIMARY AND SECONDARY OUTCOME MEASURES

The primary outcome was change in average knee pain on walking over the previous week (11-point Numeric Rating Scale (NRS), 0-10) at 6 months. The secondary outcomes included other measures of knee pain, physical function, quality of life, participant-perceived change in pain and function, and physical activity.

RESULTS

We planned to recruit 110 participants (55 per arm) but ceased recruitment at 40 (n=18 motion control shoes, n=22 neutral shoes) due to COVID-19-related impacts. All 40 participants completed 6-month outcomes. There was no evidence that motion control shoes were superior to neutral shoes for the primary outcome of pain (mean between-group difference 0.4 NRS units, 95% CI -1.0 to 1.7) nor for any secondary outcome. The number of participants experiencing any adverse events was similar between groups (motion control shoes: n=5, 28%; neutral shoes: n=4, 18.2%) and were minor.

CONCLUSIONS

Motion control shoes were not superior to neutral shoes in improving knee pain on walking in symptomatic radiographic lateral tibiofemoral joint OA. Further research is needed to identify effective treatments in this important but under-researched knee OA subgroup.

TRIAL REGISTRATION NUMBER

ACTRN12618001864213.

Exercise adherence Mobile app for Knee Osteoarthritis: protocol for the MappKO randomised controlled trial

Background

In people with knee osteoarthritis (OA), ongoing exercise participation, particularly with strengthening exercises, is central to management. Patient adherence to prescribed exercise typically declines once consultations with a clinician have ceased. Mobile applications (apps) can incorporate behaviour change techniques that may assist adherence, potentially optimising clinical outcomes.

Methods

This is a two-arm, pragmatic, superiority randomised trial. One hundred and eighty two Australians with chronic knee pain (clinical knee OA) and who have at least a mild level of physical dysfunction are being recruited. Participants are randomly allocated i) exercise (physiotherapist-prescribed exercise) or; ii) exercise plus app (physiotherapist-prescribed exercise plus access to the ‘My Exercise Messages’ mobile app). Exercise care comprises two videoconferencing consultations with a physiotherapist over two weeks (30 min each) for a strengthening exercise program, which is then conducted independently at home for 24 weeks without any further physiotherapist consultations. Participants are also provided with exercise resources to facilitate home-based exercise. Those randomised to exercise plus app will download the app after completing the two weeks of physiotherapy consultations and will be instructed by research staff to use the app for the 24 weeks of unsupervised home-based exercises. The app works by tracking completion of weekly exercise sessions, providing regular messages to facilitate weekly exercise and providing personalised messages to help overcome individual barriers to exercise participation. The two primary outcomes are i) self-reported physical function; and ii) number of days strengthening exercises were performed (previous fortnight), with a primary endpoint of 26 weeks and a secondary endpoint of 14 weeks. Secondary outcomes include knee pain severity; knee-related quality of life; global change; exercise program satisfaction; exercise self-efficacy; physical activity; sport and recreation function; another measure of exercise adherence; and willingness to undergo joint replacement. Process measures are also included.

Discussion

Findings will determine if a theory-informed mobile app improves exercise adherence and physical function in people with knee OA who have received a home-based strengthening program.

Trial Registration

Australian New Zealand Clinical Trials Registry, ACTRN12621000724875. Prospectively registered 9/06/2021.

Progressive resistance training compared to neuromuscular exercise in patients with hip osteoarthritis and the additive effect of exercise booster sessions: protocol for a multicentre cluster randomised controlled trial (The Hip Booster Trial)

INTRODUCTION

The primary aim of this randomised controlled trial is to investigate the effectiveness of 3 months of progressive resistance training (PRT) compared to neuromuscular exercise (NEMEX) on functional performance in patients with hip osteoarthritis (OA). Secondary aims are to investigate the effectiveness of exercise booster sessions (EBS) in prolonging the effects of the initial exercise interventions as well as to investigate the cost-effectiveness of PRT, NEMEX and EBS at 12-month follow-up.

METHODS AND ANALYSIS

This multicentre cluster randomised controlled trial will be conducted at hospitals and physiotherapy clinics across Denmark. A total of 160 participants with clinically diagnosed hip OA will be recruited. Participants will be cluster randomised to a 3-month intervention of either PRT or NEMEX and to receive EBS or not, resulting in four treatment arms.The primary outcome is change in functional performance, measured by the 30 s chair stand test at 3 months for the primary comparison and at 12 months for the EBS comparisons. Secondary outcomes include changes in 40 m fast-paced walk test, 9-step timed stair climb test, leg extensor muscle power and maximal strength, Hip disability and Osteoarthritis Outcome Score subscales, EuroQol Group 5-dimension, global perceived effect, physical activity and pain. Outcomes are measured at baseline, after the initial 3 months of intervention, and at 6-month, 9-month and 12-month follow-up. An intention-to-treat approach will be used for analysing changes in the primary and secondary outcome measures.

ETHICS AND DISSEMINATION

The trial has been approved by the Central Denmark Region Committee on Biomedical Research Ethics (Journal No 1-10-72-267-20) and registered at the Danish Data Protection Agency (Journal No 1-16-02-11-21). Results will be published in international peer-reviewed scientific journals.

TRIAL REGISTRATION NUMBER

NCT04714047.

People With Knee Osteoarthritis Attending Physical Therapy Have Broad Education Needs and Prioritize Information About Surgery and Exercise: A Concept Mapping Study

OBJECTIVES

To (1) identify the education priorities of people with knee osteoarthritis, including perceived importance and confidence that a health care professional can address each, and (2) match priorities to education-specific content recommendations in knee osteoarthritis management guidelines.

DESIGN

Concept mapping methodology.

METHODS

Participants generated, sorted (based on themes), and rated (5-point Likert scales: importance and confidence) education priorities. Multidimensional scaling and hierarchical cluster analysis of sorting data produced a cluster map with overarching domains. Priorities were matched against education-specific content recommendations in knee osteoarthritis guidelines.

RESULTS

Participants (brainstorming, n = 43; sorting and rating, n = 24) generated 76 priorities. A 4-domain, 11-cluster map was the most useful representation of sorting data: (i) understanding treatment options (relationship of education and exercise with surgery, adjunct options, treatment decision making); (ii) exercise therapy (how to exercise, why exercise); (iii) understanding and managing the condition (symptom management, understanding symptoms, understanding the condition); and (4) surgical, medical, and dietary management (surgery, medications, diet and supplements). The "relationship of education and exercise with surgery" (3.88/5), "surgery" (3.86/5), and "how to exercise" (3.78/5) clusters were rated highest for importance. Few priorities identified by participants were clearly recommended as education-specific content recommendations in the American College of Rheumatology (3%, n = 2/76), European Alliance of Associations for Rheumatology (12%, n = 9/76), National Institute for Health and Care Excellence (16%, n = 12/76), and Osteoarthritis Research Society International (1%, n = 1/76) guidelines.

CONCLUSION

People with knee osteoarthritis presenting to physical therapists have broad education needs and prioritize information about surgery and exercise. J Orthop Sports Phys Ther 2022;52(9):595-606. Epub: 17 June 2022. doi:10.2519/jospt.2022.11089.

Depressive symptoms and multi-joint pain partially mediate the relationship between obesity and opioid use in people with knee osteoarthritis

OBJECTIVES

To assess the relation of obesity to opioid use in people with or at risk of knee osteoarthritis (OA), and the extent to which this association is mediated by number of painful joints or depressive symptoms.

METHODS

We used data from the Multicenter Osteoarthritis Study, a longitudinal cohort of older adults with or at risk of knee OA. Opioid use was identified by prescription medications and self-report. Obesity was defined as BMI ≥ 30 kg/m2. Multi-joint pain was assessed using a standardized body homunculus, and depressive symptoms using the Center for Epidemiological Studies Depression scale. We quantified the direct and indirect effect of obesity on opioid use through the number of painful joints or depressive symptoms using causal mediation analysis by natural-effects models.

RESULTS

We studied 2,335 participants (mean age: 68; mean BMI 31 kg/m2; 60% women). Persons with obesity had ∼50% higher odds of opioid use than those without. Estimates of indirect (mediated) effect by the number of painful joints and depressive symptoms suggested an increased odds of opioid use by 34% (odds ratio [OR] = 1.34, 95% CI: 1.04, 1.70) and 35% (OR 1.35, 95% CI: 1.05, 1.71), respectively, in obese vs non-obese individuals. The total effect of obesity on opioid use was higher in women than in men.

CONCLUSIONS

Multi-joint pain and depressive symptoms partially explained greater opioid use among obese persons with knee OA, demonstrating that the negative impact of obesity on knee OA extends beyond its influence on knee pain and structural progression.

Physical Therapists Prioritize Providing Education About Exercise Therapy and to Dispel Misconceptions About Radiology for People With Knee Osteoarthritis: A Concept Mapping Study

OBJECTIVE

To (1) identify the education priorities that physical therapists have for people with knee osteoarthritis, including perceived importance and capability to provide, and (2) match priorities to education-specific content recommendations in knee osteoarthritis guidelines.

DESIGN

Concept mapping methodology.

METHODS

Physical therapists generated, sorted (based on themes), and rated (5-point Likert scales: importance and capability) patient education priorities. Priorities were matched against education-specific content recommendations in knee osteoarthritis guidelines. Additional education-specific content recommendations were added from guidelines and expert opinion if necessary. Multidimensional scaling and hierarchical cluster analysis produced a cluster map with overarching domains.

RESULTS

Physical therapists (brainstorming, n = 41; sorting, n = 20; rating, n = 22) generated 56 priorities, with 13 added (n = 2 from guidelines, n = 11 from expert opinion). Few priorities were clearly included as education-specific content recommendations in guidelines (ACR [2%, n = 1/56], EULAR [14%, 8/56], NICE [11%, 6/56], and OARSI [0%, 0/56]). An 8-cluster map emerged with 3 overarching domains: (i) first-line care (exercise therapy, lifestyle modification and general health, and weight management), (ii) knowledge formation and countering misconceptions (radiology misconceptions, understanding and managing pain and disability, and general beliefs and understanding about osteoarthritis), and (iii) decision making for medical management (surgery and medications). The exercise therapy cluster was rated the highest for both importance (3.84/5) and capability (4.00). The medications and weight management clusters were rated the lowest for importance (2.54) and capability (2.82), respectively.

CONCLUSION

Physical therapists prioritize a range of education topics for people with knee osteoarthritis, focusing on exercise therapy. Physical therapists feel least capable of providing weight management education. J Orthop Sports Phys Ther 2022;52(9):607-619. Epub: 17 June 2022. doi:10.2519/jospt.2022.11090.

Emerging injectable therapies for osteoarthritis

Osteoarthritis (OA) affects more than 240 million people worldwide. In 2016, the Osteoarthritis Research Society International submitted a report to the United States Food and Drug Administration highlighting OA as a 'serious' disease, and appealed for the urgent development and review of new therapies to address a significant unmet need. Despite this, international guidelines for the treatment of OA have been largely unchanged for over a decade. There is now an updated understanding that OA is more than simply a non-inflammatory 'wear-and-tear' process involving articular cartilage. Based on this, potential emerging therapies are being developed that target novel inflammatory, pain, and regeneration pathways. Drugs targeting the latter are being lauded as 'Disease-Modifying Osteoarthritis Drugs' - a concept which has so far proved elusive in OA research. While this review does not recommend a change in current practice, it should prompt readers to rethink the OA treatment paradigm. The global pandemic has added another layer of consideration when managing patients with OA. At a time when there is more strain on hospital systems, there is a need to expand our pharmacological armamentarium in order to manage OA without elective surgery and hospital admission.

Pain Sensitization and Neuropathic Pain-like Symptoms Associated with Effectiveness of Exercise Therapy in Patients with Hip and Knee Osteoarthritis

Pain sensitization and neuropathic pain-like symptoms are some of the common pain symptoms in patients with lower limbs, including hip and knee, osteoarthritis (HOA/KOA). Exercise therapy has been the first-line treatment; however, the effects differ for each patient. This prospective cohort study investigated the relationship between the effectiveness of exercise therapy and pretreatment characteristics (radiologic severity, pain sensitization, and neuropathic pain-like symptoms) of patients with HOA/KOA. We assessed the pain intensity using a numerical rating scale (NRS) before and after 12 weeks of exercise therapy in patients with HOA/KOA (n = 101). Before treatment, the Kellgren–Lawrence (K-L) grade; minimum joint space width (mJSW); pressure pain threshold (PPT) and temporal summation of pain (TSP) at the affected joint, tibia, and forearm; Central Sensitization Inventory-9; and painDETECT questionnaire (PDQ) were assessed. Cluster analysis was based on the pretreatment NRS and change in NRS with exercise therapy to identify the subgroups of pain reduction. The pretreatment characteristics of each cluster were compared. According to the results of the cluster analyses, patients in cluster 1 had severe pain that did not improve after exercise therapy, patients in cluster 2 had severe pain that improved, and those in cluster 3 had mild pain that improved. The patients in cluster 1 exhibited lower PPT at all measurement sites, higher TSP at the affected joint, and higher PDQ scores than those in other clusters. There was no difference in the K-L grade and mJSW among the clusters. The subgroup with severe pain and pain sensitization or neuropathic pain-like symptoms at pretreatment, even with mild joint deformity, may have difficulty in achieving improvement in pain after 12 weeks of exercise therapy. These findings could be useful for prognosis prediction and for planning exercise therapy and combining with other treatment.

Experiences of Health-Promoting Activities among Individuals with Knee Pain: The Halland Osteoarthritis Cohort

Knee pain is an early sign of knee osteoarthritis (KOA) and a risk factor for chronic widespread pain (CWP). Early prevention is vital, and more research is needed to understand health-promoting activities for individuals with knee pain from a patient perspective. This study aimed to explore how individuals with knee pain experienced health-promoting activities. Explorative qualitative design with inductive approach was applied to explore the experiences of 22 individuals (13 women, 9 men; median age: 52). Semi-structured interviews were conducted and analysed using latent qualitative content analysis. The results revealed health-promoting activities in individuals with knee pain and were interpreted in the overall theme, striving for balance in everyday life. Two categories explored the content in health-promoting activities: (1) Caring for the body-being physically active, having a healthy diet, and utilising support; and (2) Managing life stressors-allowing for recovery, promoting vitality, and safeguarding healthy relationships. In conclusion, individuals with knee pain described various health-promoting activities. They strived for balance in everyday life by caring for the body and managing life stressors. We suggest that a broader approach to everyday life can be helpful in treatment plans and health promotion to manage and prevent KOA and CWP, while striving for a healthy lifestyle.

Quadriceps strength is negatively associated with knee joint structural abnormalities-data from osteoarthritis initiative

OBJECTIVE

The aim of this study was to explore the longitudinal associations between baseline quadriceps strength and knee joint structural abnormalities in knee osteoarthritis (KOA).

METHODS

This study is a longitudinally observational study based on Osteoarthritis Initiative (OAI) cohort, including men and women aged 45-79. Quadriceps strength was measured by isometric knee extension testing at baseline. Knee joint structural abnormalities, including cartilage damage, bone marrow lesions (BMLs), effusion-synovitis and Hoffa-synovitis, were evaluated by Magnetic Resonance Imaging Osteoarthritis Knee Score (MOAKS) at baseline and 1-year follow-up. Generalized estimating equations were employed to examine the associations between quadriceps strength and knee structural abnormalities. All analyses were stratified by sex.

RESULTS

One thousand three hundred thirty-eight participants (523 men and 815 women) with a mean age of 61.8 years and a mean BMI of 29.4 kg/m² were included in this study. For men, no significantly longitudinal association of quadriceps strength with structural abnormalities was detected. In contrast, quadriceps strength was significantly and negatively associated with changes in cartilage damage and BMLs in lateral patellofemoral joint (PFJ) (cartilage damage: OR: 0.91, 95% CI 0.84 to 0.99, P = 0.023; BMLs: OR: 0.85, 95% CI 0.74 to 0.96, P = 0.011) and effusion-synovitis (OR = 0.88, 95% CI 0.78 to 0.99, P = 0.045) among females longitudinally. Higher quadriceps strength was significantly associated with less progression of lateral PFJ cartilage damage, BMLs and effusion-synovitis in females.

CONCLUSIONS

Higher quadriceps strength was associated with changes in cartilage damage and BMLs within the lateral PFJ and effusion-synovitis among females, suggesting the potential protective role of quadriceps strength on joint structures in women.

Association of Decrease in Body Mass Index With Reduced Incidence and Progression of the Structural Defects of Knee Osteoarthritis: A Prospective Multi-Cohort Study

OBJECTIVE

To define the association between change in body mass index (BMI) and the incidence and progression of the structural defects of knee osteoarthritis as assessed by radiography.

METHODS

Radiographic analyses of knees at baseline and at 4-5 years of follow-up were obtained from the following 3 independent cohort studies: the Osteoarthritis Initiative (OAI) study, the Multicenter Osteoarthritis Study (MOST), and the Cohort Hip and Cohort Knee (CHECK) study. Logistic regression analyses using generalized estimating equations, with clustering of both knees within individuals, were used to investigate the association between change in BMI from baseline to 4-5 years of follow-up and the incidence and progression of knee osteoarthritis.

RESULTS

A total of 9,683 knees (from 5,774 participants) in an "incidence cohort" and 6,075 knees (from 3,988 participants) in a "progression cohort" were investigated. Change in BMI was positively associated with both the incidence and progression of the structural defects of knee osteoarthritis. The adjusted odds ratio (OR) for osteoarthritis incidence was 1.05 (95% confidence interval [95% CI] 1.02-1.09), and the adjusted OR for osteoarthritis progression was 1.05 (95% CI 1.01-1.09). Change in BMI was also positively associated with degeneration (i.e., narrowing) of the joint space and with degeneration of the femoral and tibial surfaces (as indicated by osteophytes) on the medial but not on the lateral side of the knee.

CONCLUSION

A decrease in BMI was independently associated with lower odds of incidence and progression of the structural defects of knee osteoarthritis and could be a component in preventing the onset or worsening of knee osteoarthritis.

Evaluation of a collaborative ambulatory orthopedic care program for patients with hip and knee osteoarthritis: a comparative observational cohort study

BACKGROUND

In 2014, the novel orthopedic care program was established by the AOK health insurance fund in southern Germany to improve ambulatory care for patients with musculoskeletal disorders. The program offers extended consultation times, structured collaboration between general practitioners and specialists, as well as a renewed focus on guideline-recommended therapies and patient empowerment. The aim of this study was to assess the impact of the program on health service utilization in patients with hip and knee osteoarthritis (OA).

METHODS

This retrospective cohort study, which is based on claims data, evaluated health service utilization in patients with hip and knee OA from 2014 to 2017. The intervention group comprised OA patients enrolled in collaborative ambulatory orthopedic care, and the control group received usual care. The outcomes were participation in exercise interventions, prescription of physical therapy, OA-related hospitalization, and endoprosthetic surgery rates. Generalized linear regression models were used to analyze the effect of the intervention.

RESULTS

Claims data for 24,170 patients were analyzed. Data for the 23,042 patients in the intervention group were compared with data for the 1,128 patients in the control group. Participation in exercise interventions (Odds Ratio (OR): 1.781; 95% Confidence Interval (CI): 1.230-2.577; p = 0.0022), and overall prescriptions of physical therapy (Rate Ratio (RR): 1.126; 95% CI: 1.025-1.236; p = 0.0128) were significantly higher in the intervention group. The intervention group had a significantly lower risk of OA -related hospitalization (OR: 0.375; 95% CI: 0.290-0.485; p < 0.0001). Endoprosthetic surgery of the knee was performed in 53.8% of hospitalized patients in the intervention group vs. 57.5% in the control group; 27.7% of hospitalized patients underwent endoprosthetic surgery of the hip in the intervention group versus 37.0% in the control group.

CONCLUSIONS

In patients with hip and knee OA, collaborative ambulatory orthopedic care is associated with a lower risk of OA-related hospitalization, higher participation in exercise interventions, and more frequently prescribed physical therapy.

Publication activity in water treatments: Web of Science-based bibliometric analysis of the last two decades

We evaluated the quantity and quality of scientific publications linked with water treatments using the Web of Science (WoS) database. The WoS was searching by using the following terms "hydrotherapy," "balneotherapy," "spa therapy," "spa treatment," "creno-balneotherapy," "water treatments," and "aqua therapy," on February 10th, 2022. The recorded data were the total number of articles, year of articles, country of articles, journal, document type, index data, and citation data. Also, the studies performed with natural source mineral water were marked to make a further subgroup analysis through quality and quantity. We obtained 816 articles; 667 (81.74%) were original research articles, and 149 (18.26%) were review articles. A statistically significant and increasing trend was shown in the publication about water treatments (p < 0.01). About three-quarters of the trials were sourced from high-income countries. Italy (n = 98; 12.01%); Turkey (n = 75; 9.19%); Australia (n = 65; 7.97%); Brazil (n = 46; 5.64%); and France (n = 38; 4.66%) were the most productive countries. Calculating the number of articles per million population, Hungary (3.38), Australia (2.53), and Italy (1.64) ranked in the top three. According to 100 billion dollars GDP, the top three countries were Brazil (24.41), Hungary (21.15), and Turkey (10.41). In the average citation calculation, the Netherlands (60.84), Israel (29.86), and Australia (29.06) were in the top three. The International Journal of Biometeorology was the leading journal for publication trials about water treatments. In the subgroup analysis, we found the total number of studies performed with natural source mineral water and non-specified source water trials as 430 and 386, respectively. We also presented that the natural source and non-specified water trials had a statistically significant and increasing trend between 2000 and 2021 (p < 0.01 and p < 0.01, respectively). The trials performed with natural source water mainly were sourced from Italy (n = 79; 18.37%), Turkey (n = 61; 14.19%), France (n = 38; 8.84%), Poland (n = 30; 6.98%), and Hungary (n = 29; 6.74%), the trials performed with non-specified water were sourced from Australia (n = 61; 15.80%), Brazil (n = 46; 11.92%), USA (n = 27; 6.99%), Italy (n = 19; 4.92%), and England (n = 18; 4.66%). The top journal of the natural source water trials was the International Journal of Biometeorology (n = 65; 15.12%), and for the non-specified water trials, it was the International Journal of Sports Physiology (n = 12; 3.11%).Our study presented an increasing trend in trial publications regarding water treatments between 2000 and 2021. Most of the trials were from high and upper-middle-income countries. We suggest that by demonstrating global productivity worldwide, our results can create more scientific attention on this topic and may promote the quantity and quality of the trials.

Combination of Enzymes and Rutin to Manage Osteoarthritis Symptoms: Lessons from a Narrative Review of the Literature

Osteoarthritis is the most common joint disorder affecting over 300 million people worldwide. It typically affects the knees and the hips, and is characterized by a loss in normal joint movement, stiffness, swelling, and pain in patients. The current gold standard therapy for osteoarthritis targets pain management using nonsteroidal anti-inflammatory drugs (NSAIDs). NSAIDs are associated with several potentially serious side effects, the most common being gastrointestinal perforation and bleeding. Owing to the side effects, NSAID treatment doses need to be as low as possible and should be continued for the shortest duration possible, which is problematic in a chronic condition like osteoarthritis, which requires long-term management. Numerous clinical trials have examined oral enzyme combinations as a potential new approach in managing pain in patients with osteoarthritis. Oral enzyme combinations containing bromelain in combination with trypsin, both proteolytic enzymes, as well as the plant flavonoid rutin, may be an effective alternative to typical NSAIDs. The aim of this narrative review is to summarize and discuss the evidence on the efficacy of oral enzyme combinations compared to the gold standard (NSAID) in the management of osteoarthritis symptoms. Nine randomized controlled trials identified in this review assessed the efficacy and safety of the oral enzyme combination containing bromelain, trypsin, and rutin in patients with osteoarthritis. Most of the studies assessed the impact of the oral enzyme combination on the improvement of the Lequesne Algofunctional index score, treatment-related pain intensity alterations and adverse events compared to patients receiving NSAIDs. Although largely small scale, the study outcomes suggest that this combination is as effective as NSAIDs in the management of osteoarthritis, without the adverse events associated with NSAID use. INFOGRAPHIC.

Supporting Rehabilitation of Rural Patients Receiving Total Knee Arthroplasty Through Physical Activity: Perceptions of Stakeholder Groups

Objective

To identify how patients with osteoarthritis waiting for and recovering from total knee arthroplasty (TKA) conceptualized and participated in physical activity behaviors in their rural setting and to gather perceptions of health care professionals and rehabilitation decision‐makers on the feasibility of a remotely led physical activity coaching intervention.

Methods

Using a qualitative descriptive study, we collected data from three stakeholder groups: patients waiting for or recovering from TKA (interviews), health professionals delivering a physical activity intervention to patients in the recovering cohort (focus group), and rehabilitation leaders involved in decision‐making at the local or provincial level (interviews).

Results

A total of 38 individuals provided their perspectives (25 patients, five health professionals, eight decision‐makers). Patients waiting for and recovering from surgery described the attributes of their rural environment that supported and restricted their ability to participate in physical activities. Patients recovering from TKA appreciated support for goal‐setting and problem‐solving during their rehabilitation. Health care professionals and decision‐makers commented on the benefits of the program's innovative use of relatively simple technology to support remotely delivered, personalized rehabilitation in rural settings.

Conclusion

This study adds to the limited voice of and about patients living with osteoarthritis who reside in rural settings and identifies facilitators and barriers to TKA rehabilitation in this population. Our findings highlight that it is important to consider the local context and the resources available to patients as they navigate living well with osteoarthritis.

The AktiWeb study: feasibility of a web-based exercise program delivered by a patient organisation to patients with hip and/or knee osteoarthritis

Background

Patient organisations may be an under-utilised resource in follow-up of patients requiring long-term exercise as part of their disease management. The purpose of this study was to explore the feasibility of a web-based exercise program delivered by a patient organisation to patients with hip and/or knee osteoarthritis (OA).

Methods

In this pre–post feasibility study, patients aged 40–80 years with hip and/or knee OA were recruited from Diakonhjemmet Hospital. The 12-week intervention was delivered through a patient organisation’s digital platform. Feasibility was evaluated by proportion of eligible patients enrolled, proportion of enrolled patients who provided valid accelerometer data at baseline, and proportion completing the cardiorespiratory exercise test according to protocol at baseline and completed follow-up assessments. Patient acceptability was evaluated for website usability, satisfaction with the initial exercise level and comprehensibility of the exercise program. Change in clinical outcomes were assessed for physical activity, cardiorespiratory fitness and patient-reported variables.

Results

In total, 49 eligible patients were identified and 35 were enrolled. Thirty (86%) of these attended baseline assessments and provided valid accelerometer data and 18 (51%) completed the maximal cardiorespiratory exercise test according to protocol. Twenty-two (63%) patients completed the follow-up questionnaire, and they rated the website usability as ‘acceptable’ [median 77.5 out of 100 (IQR 56.9, 85.6)], 19 (86%) reported that the initial exercise level was ‘just right’ and 18 (82%) that the exercise program was ‘very easy’ or ’quite easy’ to comprehend. Improvement in both moderate to vigorous physical activity (mean change 16.4 min/day; 95% CI 6.9 to 25.9) and cardiorespiratory fitness, VO_2peak (mean change 1.83 ml/kg/min; 95% CI 0.29 to 3.36) were found in a subgroup of 8 patients completing these tests. Across all patient-reported outcomes 24–52% of the patients had a meaningful improvement (n = 22).

Conclusion

A web-based exercise program delivered by a patient organisation was found to be feasible and acceptable in patients with hip and/or knee OA.

Trial registration

ClinicalTrials.gov, NCT04084834 (registered 10 September 2019). The Regional Committee for Medical and Health Research Ethics south-east, 2018/2198. URL: Prosjekt #632074 - Aktiv med web-basert støtte. - Cristin (registered 7 June 2019).

Supplementary Information

The online version contains supplementary material available at 10.1186/s40814-022-01110-3.

Experiences of How Health and Lifestyle among Individuals with Knee Pain Have Been Influenced during the COVID-19 Pandemic, a HALLOA Study

The COVID-19 pandemic has affected the health and lifestyles of both the general population and of vulnerable groups. Individuals with knee pain are recommended to lead an active lifestyle to relieve pain but find it difficult to maintain health and lifestyle compared to the general population due to the cause of chronic pain, impaired physical function, and a diminished quality of life. This study aimed to explore experiences of how health and lifestyle among individuals with knee pain have been influenced during the COVID-19 pandemic. Interviews (n = 19) were conducted in 2021 and analysed with qualitative content analysis. The results showed how individuals with knee pain adjusted their behaviour and revalued their life to maintain health and lifestyle during COVID-19. Adjusted behaviours emerged, such as spending more time at home, becoming digital, and spending more time outdoors, while revaluing life emerged as having a positive outlook on life and sharing responsibility. In conclusion, behaviour was adjusted, and life revalued to manage health and lifestyle during the pandemic. However, the findings are probably similar to the general population, i.e., individuals with knee pain live similar lives as the general population despite knee pain. The results may contribute to alternative ways of maintaining health and lifestyle in various vulnerable groups and may be applied in situations other than the pandemic.

High-intensity versus low-intensity resistance training in patients with knee osteoarthritis: A randomized controlled trial

OBJECTIVES

To assess whether (i) high-intensity resistance training (RT) leads to increased muscle strength compared to low-intensity RT in patients with knee osteoarthritis (OA); and (ii) RT with vitamin D supplementation leads to increased muscle strength compared to placebo in a subgroup with vitamin D deficiency.

DESIGN

Randomized controlled trial.

SETTING

Outpatient rehabilitation centre.

SUBJECTS

Patients with knee OA.

INTERVENTIONS

12 weeks of RT at high-intensity RT (70-80% of 1-repetition maximum (1-RM)) or low-intensity RT (40-50% of 1-RM) and 24 weeks of vitamin D (1200 International units vitamin D3 per day) or placebo supplementation.

MAIN MEASURES

Primary outcome measure was isokinetic muscle strength. Other outcome measure for muscle strength was the estimated 1-RM. Secondary outcome measures were knee pain and physical functioning.

RESULTS

177 participants with a mean age of 67.6 ± 5.8 years were included, of whom 50 had vitamin D deficiency. Isokinetic muscle strength (in Newton metre per kilogram bodyweight) at start, end and 24 weeks after the RT was 0.98 ± 0.40, 1.11 ± 0.40, 1.09 ± 0.42 in the high-intensity group and 1.02 ± 0.41, 1.15 ± 0.42, 1.12 ± 0.40 in the low-intensity group, respectively. No differences were found between the groups, except for the estimated 1-RM in favour of the high-intensity group. In the subgroup with vitamin D deficiency, no difference on isokinetic muscle strength was found between the vitamin D and placebo group.

CONCLUSIONS

High-intensity RT did not result in greater improvements in isokinetic muscle strength, pain and physical functioning compared to low-intensity RT in knee OA, but was well tolerated. Therefore these results suggest that either intensity of resistance training could be utilised in exercise programmes for patients with knee osteoarthritis. No synergistic effect of vitamin D supplementation and RT was found, but this finding was based on underpowered data.

Thermo-Responsive Gel Containing Hydroxytyrosol-Chitosan Nanoparticles (Hyt@tgel) Counteracts the Increase of Osteoarthritis Biomarkers in Human Chondrocytes

Although osteoarthritis (OA) is a chronic inflammatory degenerative disease affecting millions of people worldwide, the current therapies are limited to palliative care and do not eliminate the necessity of surgical intervention in the most severe cases. Several dietary and nutraceutical factors, such as hydroxytyrosol (Hyt), have demonstrated beneficial effects in the prevention or treatment of OA both in vitro and in animal models. However, the therapeutic application of Hyt is limited due to its poor bioavailability following oral administration. In the present study, a localized drug delivery platform containing a combination of Hyt-loading chitosan nanoparticles (Hyt-NPs) and in situ forming hydrogel have been developed to obtain the benefits of both hydrogels and nanoparticles. This thermosensitive formulation, based on Pluronic F-127 (F-127), hyaluronic acid (HA) and Hyt-NPs (called Hyt@tgel) presents the unique ability to be injected in a minimally invasive way into a target region as a freely flowing solution at room temperature forming a gel at body temperature. The Hyt@tgel system showed reduced oxidative and inflammatory effects in the chondrocyte cellular model as well as a reduction in senescent cells after induction with H₂O₂. In addition, Hyt@tgel influenced chondrocytes gene expression under pathological state maintaining their metabolic activity and limiting the expression of critical OA-related genes in human chondrocytes treated with stressors promoting OA-like features. Hence, it can be concluded that the formulated hydrogel injection could be proposed for the efficient and sustained Hyt delivery for OA treatment. The next step would be the extraction of “added-value” bioactive polyphenols from by-products of the olive industry, in order to develop a green delivery system able not only to enhance the human wellbeing but also to promote a sustainable environment.

Enablement and empowerment among patients participating in a supported osteoarthritis self-management programme - a prospective observational study

Background

In Sweden, core treatment for osteoarthritis is offered through a Supported Osteoarthritis Self-Management Programme (SOASP), combining education and exercise to provide patients with coping strategies in self-managing the disease. The aim was to study enablement and empowerment among patients with osteoarthritis in the hip and/or knee participating in a SOASP. An additional aim was to study the relation between the Swedish version of the Patient Enablement Instrument (PEI) and the Swedish Rheumatic Disease Empowerment Scale (SWE-RES-23).

Methods

Patients with osteoarthritis participating in a SOASP in primary health care were recruited consecutively from 2016 to 2018. The PEI (score range 0–12) was used to measure enablement and the SWE-RES-23 (score range 1–5) to measure empowerment. The instruments were answered before (SWE-RES-23) and after the SOASP (PEI, SWE-RES-23). A patient partner was incorporated in the study. Descriptive statistics, the Wilcoxon’s signed rank test, effect size (r), and the Spearman’s rho (r_s) were used in the analysis.

Results

In total, 143 patients were included in the study, 111 (78%) were women (mean age 66, SD 9.3 years). At baseline the reported median value for the SWE-RES-23 (n = 142) was 3.6 (IQR 3.3–4.0). After the educational part of the SOASP, the reported median value was 6 (IQR 3–6.5) for the PEI (n = 109) and 3.8 (IQR 3.6–4.1) for the SWE-RES-23 (n = 108). At three months follow-up (n = 116), the reported median value was 6 (IQR 4–7) for the PEI and 3.9 (IQR 3.6–4.2) for the SWE-RES-23. The SWE-RES-23 score increased between baseline and three months (p ≤ 0.000). The analysis showed a positive correlation between PEI and SWE-RES-23 after the educational part of the SOASP (r_s = 0.493, p < 0.00, n = 108) and at follow-up at three months (r_s = 0.507, p < 0.00, n = 116).

Conclusions

Patients reported moderate to high enablement and empowerment and an increase in empowerment after participating in a SOASP, which might indicate that the SOASP is useful to enable and empower patients at least in the short term. Since our results showed that the PEI and the SWE-RES-23 are only partly related both instruments can be of use in evaluating interventions such as the SOASP.

Trial registration

ClinicalTrials.gov. NCT02974036. First registration 28/11/2016, retrospectively registered.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12891-022-05457-9.

Evaluation of the strategy for implementing the GLA:D programme in Switzerland: protocol for an implementation-effectiveness hybrid type 3 design study with a mixed-method approach

INTRODUCTION

International guidelines recommend the use of exercise, education and weight reduction, when appropriate, as first-line treatment for the conservative management of knee osteoarthritis (OA). These guidelines have not been applied systematically in Switzerland, resulting in an evidence-performance gap. After an analysis of available programmes, the Good Life with osteoArthritis Denmark (GLA:D) programme was determined as the most applicable exercise and education programme for its implementation in Switzerland. The implementation of GLA:D Switzerland OA was initiated to encourage the wider implementation of the clinical guideline recommendations and to improve conservative management of knee OA. The aim of this study protocol is to describe the evaluation of the implementation strategy and its impact on implementation, service and clinical outcomes; as well as to identify contributing barriers and facilitators.

METHODS AND ANALYSIS

The Implementation Research Logic Model will be used to evaluate the strategy and analyse its impact on the implementation outcomes by means of a mixed methods approach. This protocol outlines the proposed measures, data sources and strategies for the evaluation. Predefined implementation outcomes will help to identify the implementation impact and analyse barriers and facilitators systematically. The study population will be the healthcare professionals who are involved in the conservative management of knee OA in Switzerland, that is, physiotherapists and medical doctors, and their patients.

ETHICS AND DISSEMINATION

The use of the registry data containing data of patients participating in the GLA:D Switzerland OA programme does not fall within the scope of the Swiss Human Research Act (BASEC-Nr. Req-2019-00274). However, all participants involved in the evaluation will be asked to give informed written consent and all measures are taken to protect data and privacy of participants. Research findings will be submitted to journals relevant for the topic.

TRIAL REGISTRATION NUMBER

Not applicable.