Rheumatology and bone disease_241123_222633

Introduction to Rheumatological and Musculoskeletal Disorders

  • Joint and limb pain common in adults, diversely classified as inflammatory or degenerative.

  • Core categories: musculoskeletal problems, autoimmune diseases, infections affecting joints.

The Normal Joint

  • Types of Joints:

    • Fibrous: e.g., skull sutures.

    • Fibrocartilaginous: e.g., intervertebral discs.

    • Synovial: ball-and-socket (hip) & hinge joints (elbow).

  • Structure: Presence of synovial fluid and joint cavity contributes to frictionless movement.

Synovium & Synovial Fluid

  • The joint capsule contains synovium, which secretes synovial fluid, preventing friction and providing nutrients to cartilage.

  • Cell Types: Macrophages and fibroblast-like synoviocytes manage fluid homeostasis and immune response in joints.

Juxta-Articular Bone

  • Bone adjacent to joint differs in structure and is highly vascular, supporting joint integrity during loading.

Clinical Approach to Patients

  • Assessment includes:

    • Age: Risk factors differ by age group; e.g., osteoarthritis in older individuals.

    • General Health: Look for systemic indicators like weight loss or fever.

    • Medication History: Assess medication impacts; e.g., diuretics precipitate gout in higher risk populations.

    • Family History: Genetic predispositions for certain arthropathies.

    • Occupation/Activities: Work-related musculoskeletal issues common.

    • Psychosocial Factors: Stress can exacerbate conditions like inflammatory arthritis.

Common Regional Musculoskeletal Problems

Pain in the Neck and Shoulder

  • Causes include muscular tension, mechanical issues, or arthritic conditions.

  • Management: Physiotherapy, supportive care, ergonomic adjustments.

Pain in the Shoulder

  • Common Conditions: Rotator cuff injuries, adhesive capsulitis, impingement syndrome.

  • Symptoms: Pain worsens with movement, often at night.

  • Treatment: Analgesics, physical therapy, corticosteroid injections.

Pain in the Knee

  • Involves acute injuries or chronic degenerative changes.

  • Common Causes: Osteoarthritis, meniscal tears, ligament injuries.

  • Symptoms: Swelling, pain during activity, limited range of motion.

Pain in the Foot and Heel

  • Conditions such as plantar fasciitis and gout are common.

  • Management: Footwear modification, stretching exercises, NSAIDs for inflammation.

Chronic Pain Syndromes

  • Patients may experience widespread and persistent pain due to multiple causes including inflammation, lifestyle, and environmental factors.

Osteoarthritis (OA)

  • Definition & Epidemiology: Most prevalent arthritis type, characterized by cartilage degradation and subchondral bone changes.

  • Symptoms: Joint pain, stiffness, especially after inactivity.

  • Pathogenesis: Loss of equilibrium between cartilage synthesis and degradation, exacerbated by factors such as obesity and mechanical stress.

  • Management: Focused on symptom relief through exercise, weight management, and medications like NSAIDs. In advanced cases, surgical options (e.g., joint replacement) may be necessary.

Inflammatory Arthritis

EXAMPLES:

Rheumatoid Arthritis (RA)

  • Epidemiology: Affects 0.5–1% of the population, with a higher incidence in women.

  • Pathogenesis: Multifactorial; autoimmune nature with synovial inflammation, leading to joint destruction.

  • Symptoms: Symmetrical joint pain and swelling, fatigue.

  • Management: Early diagnosis critical, including use of DMARDs and anti-TNF therapy.

Spondyloarthritis

  • Subtypes: Ankylosing spondylitis and reactive arthritis associated with HLA-B27.

  • Symptoms: Characterized by lower back pain and stiffness, typically improving with exercise.

Crystal Arthritis

Gout & Pseudogout

  • Gout caused by hyperuricaemia and sodium urate crystal deposition in joints.

  • Presentation: Sudden, severe pain in joints, often the first MTP joint.

  • Management: NSAIDs, colchicine for acute attacks; allopurinol for chronic management.

Systemic Inflammatory Vasculitis

  • Characterized by inflammation of blood vessel walls.

  • Types categorized based on vessel size (large, medium, small).

Giant Cell Arteritis (GCA)

  • Prevalently affecting older adults, presenting with headache and visual disturbances.

  • Management: Prednisone to reduce risk of vision loss.

Autoimmune Rheumatic Diseases

Systemic Lupus Erythematosus (SLE)

  • Affects multiple organ systems, primarily in young women.

  • Symptoms: Fatigue, joint pain, distinctive rashes.

  • Management: Non-steroidal anti-inflammatory drugs, corticosteroids, immunosuppressants.

Sjögren’s Syndrome

  • Involves dry eyes and mouth due to autoimmune attack on glands.

  • Management involves symptomatic relief and monitoring for associated complications.

Conclusion

  • Early diagnosis, multi-faceted management approaches, and patient engagement are crucial across all rheumatological disorders to improve quality of life and functional outcomes.