17. MUSCULOSKELETAL HEALTH Flashcards
(115 cards)
What is the definition of arthritis?
Joint inflammation with pain
Name 5 different types of arthritis
- Osteoarthritis
- Rheumatoid arthritis
- Gout
- Ankylosing spondylitis
- Psoriatic arthritis
What is osteoarthritis and when/where is it most common?
Degeneration of the articular cartilage, typically affecting the weight-bearing (larger) joints and seen mostly over the age of 45 years.
What are the signs & symptoms of osteoarthritis? (6)
- Joint pain (e.g., knee, hip) with a gradual onset unilaterally.
- Often worsened by activity and relieved by rest.
- Associated joint stiffness.
- Joint swelling, deformity (due
to osteophytes), - crepitus - creaking sound
- Heberden’s nodes: Swelling at the distal interphalangeal joints.
What are the two main components of articular cartilage found in synovial joints?
Extracellular matrix and chondrocytes
What is the Extracellular Matrix found in articular cartilage made of? (3)
(give details of the complicated part!)
- Water
- Collagen
- Proteoglycans: Made from a core protein and glycosaminoglycan (GAG) chain(s). GAGs can be made of chondroitin sulphate, keratin sulphate etc. Proteoglycans are attached to hyaluronic acid.
What is the role of chondrocytes found in articular cartilage?
Synthesising and maintaining the extracellular matrix
What are the 4 stages in the pathophysiology of osteoarthritis?
UPDATE TO MATCH LECTURE NOTES
1) Proteolytic breakdown of cartilage matrix begins. Matrix metalloproteases (MMP) like collagenase degrade the extra cellular matrix. This releases fragments into synovial fluid causing inflammation.
2) Cartilage Begins to Wear Away
- The level of proteoglycans continues to drop causing the smooth cartilage that cushions joints to soften, thin and lose elasticity. Vertical clefts develop.
3) Loss of joint space
The space between the bones narrows, and cartilage wears away exposing the underlying bone.
4) Bone Changes Under the Surface
- As the cartilage thins, the bone underneath becomes denser (eburnation) and may form small bony growths (osteophytes) around the joint edges.
Write this in full: “MMP such as _____ degrade the ECM”
Matrix metalloprotease such as collagenase degrade the extracellular matrix.
What happens to the level of proteoglycans in osteoarthritis and what does this cause?
It continues to drop, causing cartilage to soften, thin, and lose elasticity.
This compromises joint surface integrity.
What are fibrillations in the context of osteoarthritis?
Vertical clefts that develop along the normally smooth articular cartilage
Fibrillations indicate deterioration of cartilage structure.
What is ‘eburnation’ in the context of osteoarthritis?
Bone thickening
Eburnation occurs due to increased stress on the bone as cartilage deteriorates.
What is the formation of osteophytes in osteoarthritis?
Bone spur formation
Osteophytes are a response to joint instability and cartilage loss.
What are the causes and risk factors for osteoarthritis? (8) give mechanisms
- Increasing age ― erosion of
chondrocyte telomere length
and mitochondrial dysfunction
due to oxidative damage. - Previous joint trauma ― joint inflammation and the onset of cartilage degradation.
- Overweight / obesity ― mechanical load on cartilage.
- T2DM ―insulin stimulates chondrocytes to synthesise proteoglycans. If insulin reduces in later stage T2DM there is lower chondrocyte activity.
- Genetic predisposition.
- Chronic inflammation e.g., metabolic endotoxaemia.
- Other joint diseases ― e.g., gout, RA.
- Nutritional deficiencies ― e.g., vitamin D which regulates bone metabolism.
What is the main conventional treatment for osteoarthritis and why might this not be a good idea?
NSAIDs
They increasing the rate of cartilage degeneration (inhibit collagen matrix synthesis and accelerate cartilage breakdown)
What are the naturopathic diet and lifestyle treatments for osteoarthritis? (7)
- CNM Naturopathic Diet with a focus on supporting:
- an anti-inflammatory environment
- sufficient hydration for synovial support.
- Address the cause/s ― e.g., manage weight and improve insulin sensitivity, address dysbiosis / intestinal permeability.
- Change dietary fats and oils
- Decrease arachidonic acid (red meat, fatty dairy)
- Increase eicosapentaenoic acid (EPA) (oily fish)
- Hydrotherapy
- contrast showers: Start hot, end cold. 3-4 times longer for hot.
- Epsom salt baths (500g - 1kg per bath).
- Referral to osteopathy, acupuncture.
- Exercise (low-moderate intensity) e.g. swimming, tai-chi, yoga, Pilates.
What supplements are useful for osteoarthritis patients? (give dose) (12)
- Glucosamine sulphate (500mg x 3 daily)
- Chondroitin sulphate (200 - 400mg)
- Methylsulfonyl methane (MSM) (1 - 4g)
- Vitamin C (1-5g)
- Vitamin E (200 - 400 IU)
- Vitamin D (Optimise levels)
- Tart Cherry (up to 3,000mg extract)
- Vitamin K2 (50 - 100mcg)
- Turmeric (500 - 2,000mg)
- Ginger (500 - 1,000mg)
- Boswellia (300mg x 3 daily)
- Devil’s claw (100 - 1,000 mg in split doses)
How do Glucosamine Sulphate, Chondroitin Sulphate & MSM all support clients with osteoarthritis? (4)
- Support proteoglycan synthesis
- Inhibit Matrix Metalloproteases from degrading cartilage
- Stimulate hyaluronic acid synthesis
- Anti-inflammatory - downregulate NF-KB
- Reduce inflammatory cytokines (e.g. IL-6, IL-17, TNF-α).
How do Vitamins C and E support clients with osteoarthritis? (2)
- Required for chondrocyte protein synthesis (e.g., collagen).
- Antioxidant; reduces impact of ROS on genomic stability in chondrocytes.
How does Vitamin D support clients with osteoarthritis? (2)
- Regulates collagen turnover and bone metabolism.
- Studies link low vitamin D with increased OA
How does Vitamin K2 support clients with osteoarthritis? (1)
Inhibits cartilage calcification by binding to proteins in joints.
How do tart cherry, turmeric, ginger, devil’s claw and boswelia support clients with osteoarthritis? (2)
- Antioxidant
- Anti-inflammatory - downregulate NF-KB
- Reduce inflammatory cytokines (e.g. IL-6, IL-17, TNF-α).
What topical treatments can be used for osteoarthritis?
- Devil’s claw
- MSM
- Essential oils in carrier cream/oil e.g.
- Ginger
- Rosemary
- Peppermint
What is the definition of Rheumatoid Arthritis?
A chronic inflammatory
autoimmune disease characterised by synovial joint
inflammation, potentially affecting all organs except the brain.