MSK - Level 2 Flashcards
Description of osteoarthritis?
Damage to synovial joints leads to repair and structural change
o May occur through repeated excessive loading and stress of joint over time, or by injury
Progressive loss of cartilage leads to exposed bone being sclerotic and increased vascularity
Osteophytes form
Epidemiology of osteoarthritis?
- Commonest joint condition
- Prevalence increases with age
- Females 3>1 Males
- Onset >50 years
Typical pattern in males and females of osteoarthritis?
- Females – hands and knees
- Males – hips
Risk factors of osteoarthritis?
o Familial o Age o Obesity o Joint damage or malalignment o Occupation/Sports
Symptoms in localised disease of osteoarthritis?
o Joint pain Worse on movement Relieved at rest Worse at end of day Joint gelling after 30 minutes of rest
o Crepitus, instability, loss of function
Symptoms in generalised disease of osteoarthritis?
o DIP, MCP, MTP and weight-bearing hips
Signs of osteoarthritis?
o Herbeden’s nodes (DIPs) o Bouchard Nodes (PIPs) o Joint tenderness, derangement o Decreased ROM o Mild synovitis o Muscle wasting o Baker’s cyst (OA/RA)
Diagnosis without imaging of osteoarthritis?
o If >45, has activity-related joint pain and NO morning stiffness or lasts <30 minutes
Investigations and their findings in osteoarthritis?
- CXR o Loss of joint space o Osteophytes o Subarticular sclerosis o Subchondral cysts - Raised CRP - Test for Rheumatoid if suspected
General Management of osteoarthritis?
o Leaflet/Arthritis UK website
o Exercise to improve local muscle strength and improve aerobic fitness
o Weight loss
o Appropriate footwear, cold packs, walking aids
o Local heat or ice can help
Analgesic management of osteoarthritis?
o Topical NSAIDs
o If ineffective, short-term oral NSAID (+PPI)
o Intraarticular steroid injection for moderate-to-severe pain
Refer if conservative measures fail
When to refer to surgeon in osteoarthritis? What options are available?
o When?
Joint replacement if impacting on QoL and refractory to non-surgical treatment
o Options?
Total joint replacement
Resurfacing
Fusion
Complications of osteoarthritis?
o Joint deformity
o Functional impairment
o Occupational impact
o Falls
Description of osteoporosis? What are osteoporotic fractures?
- Low bone mass and structural deterioration of bone tissue – leads to increase in bone fragility and susceptibility to fracture
- Osteoporotic fracture = fragility fracture occurring as consequence of osteoporosis
Definition of osteoporosis?
o Osteoporosis = Bone mineral density (BMD) of 2.5 SD below mean – measured by DEXA applied to femoral neck
o Osteopenia = BMD between -1 and -2.5 on DEXA
- It may be primary (age related) or secondary (to conditions or drugs)
Epidemiology of osteoporosis?
- Women mostly – due to decrease in oestrogen in menopause
- 1 in 3 women and 1 in 5 men will have fragility fracture
Risk Factors of osteoporosis - reduced bone mineral density?
DM, Hyperthyroidism, hyperparathyroidism IBD, Coeliac, pancreatitis CKD Liver failure COPD Menopause Immobility BMI<18.5
Risk factors of osteoporosis - does not reduce bone mineral density?
Age Oral corticosteroids Smoking Alcohol >3 units daily Previous fragility fractures RA Drugs – SSRIs, PPI, Carbamazepine
Symptoms of osteoporosis?
- Usually asymptomatic unless fragility fracture occurred
What are the at risk groups in osteoporosis?
Women >65, Men>75
Over 50 if: Previous osteoporotic fragility fracture Use of corticosteroids History of falls BMI <18.5 Smoker Alcohol >14 per week Secondary cause
Under 50 if:
Use of corticosteroids
Untreated premature menopause
Previous fragility fracture
Under 40 if:
>7.5mg prednisolone for >3 months
Previous or multiple fragility fracture
Consider in:
SSRIs, carbamazepine, GnRH, PPIs, pioglitazone
Testing for at risk groups in osteoporosis?
o Online risk calculator (QFracture/FRAX) to predict 10 year risk
If high (>10%) – DEXA scan to measure BMD
If borderline but risk factors – DEXA scan to measure BMD
When to test without calculating risk in osteoporosis?
- Dual-energy X-ray absorptiometry (DEXA) scan to measure BMD without calculating risk if:
o >50 with Hx of fragility fracture
o <40 with major risk factor for fractures
Bloods performed in osteoporosis?
o Bone screen - Ca, PO4 and ALP usually normal
Management if DEXA >-2.5 or low risk of fractures in osteoporosis? When to reassess?
Lifestyle advice
Regular exercise – walking outdoors, strength training
Eat balanced diet
Stop smoking
Drink within recommended alcohol limits
Reassess at minimum 2 years