Knee Osteoarthritis: A Growing Concern for Older Adults

Prevalence of Knee Osteoarthritis

Knee osteoarthritis (OA) impacts over 10% of individuals aged 60 and older. This musculoskeletal condition is prevalent globally and stands as a significant source of pain and disability among various age groups. However, older adults, especially those over 60, are at a heightened risk for developing knee OA.

The Nature of Knee Osteoarthritis

Knee OA occurs when the cartilage in the knee begins to degrade. This cartilage serves as a cushion between the bones, allowing for smooth and lubricated movement. As the condition progresses, it can lead to joint pain and restrict the activities of those affected. Treatments often involve medications, which may not provide complete relief. The persistent pain associated with knee OA can contribute to depression, adversely affecting the quality of life for patients.

Research Insights from the University of Eastern Finland

Recent research conducted by the University of Eastern Finland focused on patients with knee OA, aiming to identify potential modifications to enhance their quality of life. The findings were published in PLOS ONE.

Study Methodology

This study analyzed data from 3,053 participants in the Osteoarthritis Initiative (OAI) database, all of whom exhibited significant knee OA at the study’s onset and had not undergone knee replacement surgery. Participants were given a health-related quality of life score to evaluate their pain and overall experience with knee OA. Follow-up assessments occurred over eight years to monitor changes in knee OA severity, pain levels, and self-perceived quality of life. Data from participants who had knee replacement surgery during the study were excluded from subsequent analyses.

Key Findings from the Study

Researchers identified four distinct group-based trajectory models regarding health-related quality of life scores: no change, improving, slowly worsening, and rapidly worsening.

The study revealed that overweight, low-income women who smoked were more likely to fall into the rapidly worsening category. Interestingly, while older individuals had a higher likelihood of developing OA, those aged 65-79 were less likely to be in the rapidly worsening group. The researchers hypothesized that this might be due to older adults having a higher tolerance for chronic pain.

Participants in the rapidly worsening group were also more likely to eventually require knee replacement surgery compared to those in the no-change group. Additionally, members of both the slowly and rapidly worsening groups tended to use pain medication more frequently.

Implications for Treatment

The researchers believe that the results from this study can assist healthcare providers in planning targeted interventions for knee OA patients. By utilizing this data, physicians can better identify individuals at higher risk for knee osteoarthritis and implement early intervention strategies to improve their quality of life.

References

Törmälehto S, Aarnio E, Mononen M, Arokoski J, Korhonen R, Martikainen J. Eight-year trajectories of changes in health-related quality of life in knee osteoarthritis: Data from the Osteoarthritis Initiative (OAI). PLoS ONE. 2019;14(7):e0219902. doi:10.1371/journal.pone.0219902.

Musculoskeletal conditions. Who.int. https://www.who.int/news-room/fact-sheets/detail/musculoskeletal-conditions. Published 2019. Accessed August 9, 2019.

Osteoarthritis (OA) | Basics | Arthritis | CDC. Cdc.gov. https://www.cdc.gov/arthritis/basics/osteoarthritis.htm. Published 2019. Accessed August 10, 2019.

Image by Wolfgang Claussen from Pixabay.