Mx of MSK disease Flashcards

1
Q

What are the core non-pharmacological interventions in people with MSK disease?

A

Patient education - self efficacy and coping strategies
Exercise - strengthening and aerobic conditioning (improves well-being)
Reduce adverse mechanical factors
Local treatments - heat, cold, acupuncture, pulsed electrical stimulation
Invasive procedures - arthroscopic lavage (not recommended)
Surgery

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2
Q

How can mechanical factors be reduced to reduce symptoms?

A

Weight loss if obese, modification of work/leisure activities
Pacing of activities related to functional ability
Appropriate footwear - shock absorbing
Walking stick (on contralateral side), aids, appliances
Modification of home environment

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3
Q

What types of surgery are used in MSK disease?

A
joint surgery for persistent severe pain/disability 
reconstructive surgery (e.g. rup[tured tendons)
removal of inflamed synovium to prevent damage
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4
Q

How do corticosteroids act?

A

inhibit COX-2, cytokines and ILs

increase annexin-1 production, which has anti-inflammatory effects

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5
Q

What are the widespread side effects of corticosteroids?

A
infection/poor wound healing 
peptic ulceration 
acute adrenal insufficiency upon withdrawal 
cushing's syndrome 
DM
osteoporosis 
avascular necrosis 
psychological effects 
inter-scapular fat pad
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6
Q

What should be prescribed alongside long term corticosteroids?

A

PPI
vitamin D
bisphosphonates

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7
Q

What are the benefits of intra-articular injections?

A

can have a diagnostic and therapeutic effect

injections into joints/periarticular structures provide pain relief

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8
Q

How can intra-articular injections be diagnostic?

A

the preparation often contains local anaesthetic and so if pain resolves within a short period of time, we can reasonably confident that the pain is coming from the structure injected

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9
Q

What are the disadvantages of intra-articular injections?

A

do not repeat more than 3 in 6 months

there can be systemic absorption and side effects

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10
Q

What are the benefits of physiotherapy in MSK disease?

A

aerobic training - reduces pain and disability, improves restorative and helps with weight loss
Local strengthening exercises - can reduce pain and disability over compromised joints

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11
Q

What is a DMARD?

A

disease monitoring anti rheumatic agents

eg methotrexate, sulfasalazine, hydroxychloroquine, penicillamine and gold compounds

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12
Q

When are DMARD drugs used?

A

initiated as soon as a diagnosis of inflammatory arthritis is reached, they reduce pain score, disability score and RF level

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13
Q

How do DMARDs act?

A

clinical effect is slow so steroids are used to ‘cover’ the induction phase

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14
Q

What is combination therapy?

A

two drugs used together generally appear superior to monotherapy.
for example: methotrexate plus hydroxychloroquine for less severe / methotrexate plus for more severe presentations

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15
Q

How is methotrexate given?

A

once weekly dosing (oral/IM)

folic acid should be taken on the other days

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16
Q

What are the signs of methotrexate toxicity?

A

bruising
infection
SOB (pulmonary toxicity)

17
Q

What monitoring takes place for patients on methotrexate?

A

frequent monitoring FBC, LFT, U&Es are required every 10 weeks once settled on drug

18
Q

Common side effects of methotrexate?

A

nausea
headaches
tingling

19
Q

When is methotrexate not suitable?

A

pregnancy

males trying to concieve

20
Q

What is the mode of action of sulfasalazine?

A

takes around 8 weeks to have a clinical response

21
Q

What monitoring is needed on sulfasalazine?

A

FBC, U&E, LFT should be monitored monthly for the first three months

22
Q

What SEs are common on sulfasalazine?

A
nausea and dyspepsia 
rashes
blood dyscrasias 
azoospermia (no sperm in semen)
yellow/orange discolouration of urine/contact lenses
23
Q

What is the mode of action of hydroxychloroquine?

A

least effective but least toxic

takes 6 weeks for a clinical response

24
Q

What monitoring is needed for hydroxychloroquine?

A

baseline visual activity and annual re-check

25
Q

What are the side effects of hydroxychloroquine?

A

rash
GI disturbance
Peripheral neuropathy
retinal damage

26
Q

What biologic is most commonly used?

A

ant-TNF agents

eg infliximab, etanercept

27
Q

What are the contraindications to using biologics?

A
active infection 
latent TB
malignancy 
pulmonary fibrosis 
severe heart failure
28
Q

What are the adverse effects of using biologics?

A

opportunistic infections
non-melanoma skin cancers
injection site reactions
- patients are vaccinated each year
- CXR required to exclude TB prior to commencing treatment
- advised to present early if any signs of potential infections
- infusion reactions can occur so many are given in hospital initially before becoming self taught

29
Q

What are the general orthopaedic complications?

A

wound infection
DVT - occur in 50% of total hip/knee replacements (mainly asymptomatic)
MI - most common cause of death
local neurovascular injury
compartment syndrome
periprosthetic fracture: peri-operative or delayed
complex regional pain syndrome