Musculoskeletal Flashcards
On what movement does subacromial impingement cause pain?
Shoulder abduction, between 60 and 120 degrees
What feature of ank spond might distinguish it from other pathology?
Pain at night that improves on getting up
What is an intracapsular fracture?
From the edge of the femoral head to the insertion of the capsule of the hip joint
What is an extracapsular fracture?
Either be trochanteric or subtrochanteric (the lesser trochanter is the dividing line)
What is a Garden system type I fracture?
Stable fracture with impaction in valgus
What is a Garden system type II fracture?
Complete fracture but undisplaced
What is a Garden system type III fracture?
Displaced fracture, usually rotated and angulated, but still has boney contact
What is a Garden system type IV fracture?
Complete boney disruption
What is a heliotrope rash?
A purplish rash to the eye lids seen in dermatomyositis
What are Gottron’s papules?
Roughened red papules over the extensor surfaces of the fingers seen in dermatomyositis
What are the Ottawa Rules for ankle x-rays?
Pain in the malleolar zone plus any one of the following:
Bony tenderness at the lateral malleolar zone
Bony tenderness at the medial malleolar zone
Inability to walk four weight bearing steps immediately after the injury and in the ED
What skin change is most associated with antiphospholipid syndrome?
Livedo reticularis
Which organism is most commonly indicated in discitis?
S aureus
For how many months must symptoms persist to be termed chronic fatigue?
4 months
How should polymyalgia rheumatica (PMR) be treated?
Steroids - should be a rapid improvement in symptoms (within a week) - failure to respond rapidly should result i in considerations of alternative diagnoses
How raised is ESR in PMR?
> 40
When in pain elicited most in lateral epicondylitis?
Resisted wrist extension/supination whilst elbow extended
What is lateral epicondylitis also known as?
Tennis elbow
When in pain elicited most in medial epicondylitis?
Pain is elicited during wrist flexion and pronation
What is medial epicondylitis also known as?
Golfer’s elbow
What are the conditions where doctors should offer immediate bone protection on commencement of long-term steroids?
Pt >65, or those that have previously suffered fractures - offer alendronate and ensure calcium and vitamin D replete
Pt’s <65 should be offered a bone density scan instead
How should you manage a pt according to their T-score in bone density scanning?
> 0 = reassure
0 - -1.5 = repeat scan in 1-3 years
< -1.5 = offer bone protection
What proportion of talipes is bilateral?
50%
Using the Ponseti method, after how long is talipes usually corrected after birth?
6-10 weeks
For how long should night-time braces be worn by children with talipes?
Up to the age of 4
What is the most common cause of talipes?
Idiopathic
What is the main S/E of colchicine?
Diarrhoea
What is the pathopneumonic feature of pseduogout?
Chrondrocalcinosis on XR - presents as ‘linear calcifications of the articular cartilage’
What are the RFs for the development of pseudogout at <50 y/o?
Haemochromatosis Hyperparathyroidism Low magnesium, low phosphate Acromegaly Wilson's disease
What type of crystals are deposited in the synovium in pseudogout?
Calcium pyrophosphate crystals
What are type I hypersensitivity reactions?
Anaphylaxis - antigen reacts with IgE bound to mast cells
What are type II hypersensitivity reactions?
Cell bound - IgG or OgM binds to antigen on cell surface
What are type III hypersensitivity reactions?
Immune complex - free antigen and antibody combine
What are type IV hypersensitivity reactions?
Delayed hypersensitivity - T-cell mediated
Graves disease and MG are examples of which type of hypersensitivity reaction?
Type V
What are the 4 features of osteoarthritis on XR?
Decrease of joint space
Subchondral sclerosis
Subchondral cysts
Osteophytes forming at joint margins
What is meralgia parasthetica caused by?
Lateral cutaneous nerve of thigh compression
What are myxoid cysts?
Also known as mucous cysts, they are benign ganglion cysts usually found on the distal, dorsal aspect of the finger. There is usually osteoarthritis in the surrounding joint
What anti-rheumatic drug should be avoided in pt’s with aspirin allergy?
Sulphasalazine
What is the risk associated with a scaphoid fracture?
Risk of avascular necrosis due to the blood supply to the scaphoid bone
What are the poor prognostic features of RA?
Rheumatoid factor positive Anti-CCP antibodies Poor functional status at presentation X-ray: early erosions (e.g. after < 2 years) Extra articular features e.g. nodules HLA DR4 iInsidious onset
What is tested for McMurray’s Test?
Meniscal tears
What can alendronate be switched for when significant upper GI side effects are experienced?
Risedronate or etidronate
Which test may be positive in referred lumbar spine pain?
Femoral nerve stretch test may be positive - lie the patient prone. Extend the hip joint with a straight leg then bend the knee. This stretches the femoral nerve and will cause pain if it is trapped
What are the red flags for back pain?
Age < 20 years or > 50 years History of previous malignancy Night pain History of trauma Systemically unwell e.g. weight loss, fever
How is the femoral head epiphysis displaced in SUFE?
Postero-inferiorly