Rheumatology Flashcards
What 4 key x-ray changes can be seen in patients with osteoarthritis?
(HINT: LOSS)
L - loss of joint space
O - osteophytes
S - subchondral sclerosis (increased density of the bone along the joint line)
S - subchondral cysts (fluid-filled holes in the bone, aka geodes)
In osteoarthritis:
- joint pain + stiffness may be worsened by activity, OR
- activity improves symptoms
- joint pain + stiffness may be worsened by activity
In which joints do Heberden’s nodes form?
- DIP joints
- PIP joints
- MCP joints
- DIP joints
In which joints do Bouchard’s nodes form?
- DIP joints
- PIP joints
- MCP joints
- PIP joints
How is osteoarthritis diagnosed?
= can be made without investigations if,
- patient > 45
- has typical activity related pain
- has no morning stiffness OR, stiffness lasting < 30 mins
Management options for osteoarthritis (5)
- patient education
- physiotherapy
- stepwise analgesia to control symptoms
- intra-articular steroid injections
- joint replacement
In the stepwise analgesia approach to control symptoms in osteoarthritis, what is used first?
= oral paracetamol and topic NSAIDs OR, topical capsaicin (chilli pepper extract)
What is capsaicin? and what is it used for?
= chilli pepper extract,
in osteoarthritis
Which joints are most typically affected by rheumatoid arthritis?
- DIP joints
- PIP + MCP joints
- PIP + MCP joints
What is Rugger Jersey Spine? and what is it associated with?
= osteosclerosis associated with secondary hyperparathyroidism of chronic renal failure
Which of the following best describes bone changes associated with ‘osteoporosis’?
- deficient matrix, normal mineralisation
- normal matrix, deficient mineralisation
- normal matrix, normal mineralisation, increased reabsorption
- deficient matrix, normal mineralisation
Which of the following best describes bone changes associated with ‘osteomalacia’?
- deficient matrix, normal mineralisation
- normal matrix, deficient mineralisation
- normal matrix, normal mineralisation, increased reabsorption
- normal matrix, deficient mineralisation
Which of the following best describes bone changes associated with ‘hyperparathyroidism’?
- deficient matrix, normal mineralisation
- normal matrix, deficient mineralisation
- normal matrix, normal mineralisation, increased reabsorption
- normal matrix, normal mineralisation, increased reabsorption
What is osteoporosis?
= condition where there is a reduction in the density of bones
Effect of oestrogen on bones?
= essential to bone health because it promotes the activity of osteoblasts
(protective against osteoporosis)
What is FRAX tool used for? and what does it calculate?
= used in assessing risk of osteoporosis
gives prediction of the risk of fragility fracture over the next 10 years
When assessing bone density, which of the following scores is more clinically relevant?
- Z-score
- T-score
- T-score
When doing a DEXA scan to assess bone density, where is a key location to scan for classification + management of osteoporosis?
= hip
First-line pharmacological treatment for osteoporosis?
= Bisphosphonates
Side effects of Bisphophonates (3)
- reflux + oesophageal erosions
- atypical fractures
- osteonecrosis: of jaw + external auditory canal
Alendronate, Risedronate + Zoledronic acid are all examples of?
= Bisphosphonates
What is osteoarthritis?
= referred to as ‘wear and tear’ in the joints, usually synovial joints and as a result of genetic factors, overuse and injury
If oral paracetamol, topical NSAIDs or topical capsaicin does not work what is the next step, in the stepwise analgesia?
= add oral NSAIDs, consider PPI to protect stomach
What is the 3rd step in analgesia to control symptoms in osteoarthritis? (after oral NSAIDs + PPIs)
= consider opiates (cautiously as Sessions include: dependence + withdrawal)