MSK Flashcards

1
Q

What would symmetrical small joint swelling suggest?

A

Rheumatoid arthritis

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2
Q

Name the categories of inflammatory arthritis?

A

Seropositive
Seronegative
Infectious
Crystal induced

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3
Q

Name the seropositive arthritis?

A
RA
Lupus
Sclerodema 
Vasculitis
Sjorgens
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4
Q

Name the seronegative arthritis?

A

Ankylosing spondylitis
Psoriatic arthritis
Reactive arthritis
Inflammatory bowel disease arthritis

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5
Q

What is the ‘S factor’?

A

Stiffness
Swelling
Squeezing is painful = an inflammatory arthritis

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6
Q

How do we diagnose RA?

A

History and clinical exam
Inflammatory markers (CRP,plasma viscosity)
Autoantibodies
Imaging

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7
Q

Which auto-antibody is most specific for RA?

A

Anti-CCP antibody

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8
Q

Treatment for RA?

A

Early recognition and diagnosis
Early treatment with DMARDS
Tight control with target of remission Patient education

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9
Q

What is the description of uric acid crystals as seen under polarised light microscopy?

A

Negatively birefringent, needle shaped crystals

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10
Q

2 main crystal arthropathies?

A
Gout 
Pseudogout (Calcium pyrophosphate deposition disease)
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11
Q

How does gout present?

A

Intense pain, redness and swelling

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12
Q

How do CPPD uric acid crystals appear?

A

Rhomboid shaped and weakly positive birefringent

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13
Q

Name key features of OA on X-ray?

A
Loss of joint space
Osteophyte formation 
Subchondral sclerosis
Subchondral cysts
- remember LOSS
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14
Q

Which type of arthritis has periarticular erosions?

A

RA

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15
Q

In a patient with fibromyalgia, what blood abnormalities would you expect to see?

A

No abnormality

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16
Q

Would morphine sulfate be a suitable treatment for fibromyalgia?

A

NO

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17
Q

Treatment for fibromyalgia?

A
Use atypical analgesics (amitriptyline, gabapentin)
Graded exercise programmes
CBT
Paracetamol
NOT STEROIDS
18
Q

What can precipitate fibromyalgia?

A

Emotional or physical trauma

19
Q

Best investigation when you suspect septic arthritis?

A

Synovial fluid analysis and culture

20
Q

Symptoms of septic arthritis?

A

Often a normal joint with previous trauma.

Fever, erythema, warm affected joint. Decreased range fo motion, severe pain when bearing weight

21
Q

What is carpal tunnel syndrome caused by?

A

Compression of the median nerve as it travels under the flexor retinaculum

22
Q

Why does pregnancy predispose to Carpal Tunnel Syndrome?

A

Increased oedema causes a narrowing of the carpal tunnel, predisposing entrapment of the median nevrve

23
Q

Symptoms of carpal tunnel syndrome?

A

Numbness, paresthesia in median nerve distribution (thumb, index, middle and radial half of ring finger)

24
Q

Treatment of CTS?

A

Splint the wrist or local corticosteroids

25
What are the common sites of compartment syndrome?
Calf Forearm/hand Foot Thigh/buttock
26
Signs of compartment syndrome?
``` Disproportionate pain Pain on passive stretch of compartment. Parasethesia Pallor Pulselessness (late sign) ```
27
Treatment for compartment syndrome?
Fasciotomy
28
Which nerve is most likely to be displaced secondary to a Colle's fracture?
Median
29
What is the most suitable treatment for a displaced distal fibular fracture with talar shift?
Open reduction, internal fixation (ORIF)
30
When would external fixation be used?
Temporary fixation of open injuries or severe soft tissue/bone loss
31
What are the goals of fracture management?
Restore joint surfaces | Restore alignment, length and rotation
32
If the bone is displaced ....
Reduce it (open or closed) and stabilise
33
If the bone isn't displaced and is stable...
Use a splint/cast
34
If the bone isn't displaced but also isn't stable...
Stabilise it with wires
35
How does fat embolism syndrome present>
Hypoxia CNS depression Pulmonary oedema Petechial rash
36
What is fat embolism syndrome?
Caused by inflammatory response to embolised fat globules. Fat and marrow are embolised in the blood stream during acute long bone fracture or intramedullary instrumentation
37
What tests are used to test for ACL injury?
Lachman | ACL draw test
38
What tests are used to test for PCL injury?
Posterior draw test
39
When is dynamic hip screw used?
Extra-capsular fractures
40
What do intra-capsular fractures carry a high risk of?
AVN especially if displaced so are often replaced