Locomotor Flashcards
How common is osteoarthritis?
Prevalence increases with age
Causes joint pain in 8.5 million in UK.
Who does osteoarthritis affect?
M>F
Increasing age
What are the causes of osteoarthritis?
In synovial joints, a variety micro traumas and abnormal biomechanics can trigger repair processes
When the joint does not fully repair symptomatic OA occurs
Genetic factors are important in determining outcome of repair process
What are the risk factors for osteoarthritis?
Genetics Ageing Gender Obesity High/Low bone density Joint injury Occupational and recreational stresses on joints Reduced muscle strength Joint laxity Joint misalignment
What are the symptoms of Osteoarthritis?
Joint pain exacerbated by exercise and relieved by rest
Rest and night pain
Knee pain, bilateral and felt in and around knee
Hip pain in OA is felt in the groin and anterior/lateral thigh
Hip OA pain can also be referred to knee/testicle
MORNING/POST REST joint stiffness
What are the signs of osteoarthritis on examination?
Reduced ROM Pain on movement of the joint or at the extremes of joint movement Joint swelling/synovitis Periarticular tenderness Crepitus Absence of systemic features Bone swelling and deformities (heberdens and bouchards) Joint instability
What are the possible differential diagnoses of osteoarthritis?
Inflammatory arthritis Fibromyalgia Septic arthritis Fracture Major ligament injury Bursitis
What investigations are necessary to diagnose osteoarthritis?
Plain X-Rays
MRI
Blood tests return normal
What are the treatments than osteoarthritis?
Muscle strengthening Weight loss AIDS and devices Painkillers Corticosteroid intra-articular injections
What is gout?
A disorder of purine metabolism, characterised by a raised uric acid level in the blood and the deposition of urate crystals in joints and other tissues
What is gouty arthritis?
Arthritis due to urate crystals in the joints
How does gout occur?
3 phases:
- long period of hyperuricaemia before gout manifests
- a period during which acute attacks of gouty arthritis are followed by variable intervals with no symptoms
- final period of tophaceous gout where people have nodules affecting joints
How common is gout?
Prevalence of 1.4%
Who does gout affect?
More common in men
More common in older people
What causes Gout?
Uric acid exists as sodium urate in extracellular fluid
Gout attacks extremities and temperature in hands and feet cold enough to precipitate urate from plasma leading to deposits on the joints
What are the risk factors for gout?
Gender (male) Meat Seafood Alcohol Diuretics Obesity Hypertension Cardiovascular disease Diabetes mellitus Chronic renal failure Severe psoriasis
What are the symptoms of gout?
Development of acute pain in a joint - swollen, tender, erythematous and reaches crescendo over 6-12 hour period = highly suggestive of crystal arthropathy
Inflammation reaches peak within 24 hours and accompanied by fever and malaise
50% of all attacks and 70% of first attacks affect 1st MTP joint of big toe
What are the signs of gout on examination?
No single examination
Arthritis = swelling redness warmth and pain on passive movement, 1st MTP joint most often affected
Tophi = firm, white, translucent nodule
- usually takes 10 years after first attack of acute gout for tophi to develop