What Is a Joint? A joint is the connection between two neighboring bones. This connection allows movement while providing stability and flexibility to the musculoskeletal system. A joint consists of two articular surfaces, the joint capsule, and the joint cavity. The joint cavity contains synovial fluid, which helps the articular surfaces glide smoothly.

In certain joints (e.g., the knee), there is articular cartilage. When cartilage wears down and synovial fluid is reduced, the bones begin to “rub” against each other. As a result, pain, inflammation, swelling (edema), loss of mobility, and changes in joint shape due to friction may occur.

What Causes Bone Pain? Pain in bones and joints can occur as a response to many conditions, such as trauma, infection, inflammation, autoimmune diseases, genetic disorders, and age-related joint and bone pathologies. Pain may be:

• Acute (e.g., due to trauma)

• Recurrent (present throughout the day and then subsides)

• Chronic (persistent and continuous)

Musculoskeletal pain may be caused by osteoarthritis, which is the most common form of chronic pain and disability worldwide.

What Is Arthritis and What Is Osteoarthritis? Arthritis has become a global health concern and affects a significant portion of the population. It is a chronic degenerative condition (tends to worsen over time) that refers to joint pain.

Osteoarthritis (OA) is the most common form of arthritis and affects a large percentage of older adults. It is a progressive, degenerative joint disease characterized by inflammation, chronic pain, functional limitation, and reduced quality of life in affected individuals. It should be noted that osteoarthritis does not affect only the articular cartilage but also the integrity of surrounding tissues.

Common Symptoms of Osteoarthritis Include:

• Joint pain

• Stiffness (difficulty moving, especially in the morning or after inactivity)

• Mobility problems (which worsen if left untreated as the disease progresses)

• Crepitus (a characteristic sound during joint movement)

• Swelling and tenderness

• Redness (localized erythema at the affected area)

The etiology and underlying mechanisms of osteoarthritis and rheumatoid arthritis (RA) are complex. Evidence suggests that disease progression may largely be due to increased oxidative stress and inflammation.

What Is Rheumatoid Arthritis? Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease of the joints that affects a significant portion of the population. Among non-pharmacological approaches, healthy nutrition, weight loss, and exercise interventions (physiotherapy) are commonly recommended strategies for managing OA. Additionally, anti-inflammatory foods and specific vitamins, such as vitamin D, have been shown to reduce RA symptoms.

Rheumatoid arthritis can cause minor cartilage and bone damage, as well as complete joint destruction, potentially leading to an inability to perform daily activities.

Early Diagnosis Is the Key to Optimal Therapeutic Success The primary goals of treatment are:

• Pain and inflammation control

• Reduction of joint damage

• Maintenance or improvement of physical function

• Enhancement of quality of life

Pathophysiology This bone or joint condition is generally accompanied by local release of substances such as pro-inflammatory cytokines, growth factors, and neurotransmitters, which activate and sensitize sensory nerves, resulting in amplified pain signals. Pain signal modulation within the spinal cord and brain contributes to the development of chronic pain.

Exercise… and Again, Exercise! The World Health Organization (WHO) recommends both aerobic exercise (brisk walking, swimming, cycling—any activity that increases heart rate) and resistance training (e.g., exercises with elastic bands) each week at moderate to vigorous intensity for adults aged over 65 years.

At present, there is no definitive cure for rheumatoid arthritis.

However, physiotherapy programs have shown positive outcomes by setting individualized treatment goals based on each patient’s condition, thereby improving functional capacity.

It is also evident that many patients with RA experience muscle loss, which can be prevented through strengthening exercises prescribed by a physiotherapist and combined with the adoption of a healthy lifestyle (appropriate nutrition, smoking cessation, avoidance of alcohol, etc.).

Furthermore, recent studies indicate that individuals with RA have an increased risk of cardiovascular disease, partly due to systemic inflammation.

For this reason, prevention through physiotherapy can significantly contribute to improving patients’ quality of life.

BSc, MSc, NDT – Physiotherapist
Santoriniou Maria-Georgina
KDIF EFALTIRIO