Labs

Question 1

Name the CD marker associated with ankylosing spondylitis

Answer 1

HLA-B27

Question 2

Describe the rashes of cutanous lupus erythematous

Answer 2

• Malar rash for acute
• Photosensitivity rash for subacute
• Discoid rash for chronic

Question 3

What do autoantibodies in sle target?

Answer 3

Nuclear, dsDNA & Smith

Question 4

What cancer could RA cause?

Answer 4

Lymphoma

Question 5

What anemia could SLE cause?

Answer 5

Autoimmune hemolytic

Question 6

Age of ankylosis spondylitis onset?

Answer 6

20-30 years

Question 7

What skin disease could ankylosing spondylitis cause?

Answer 7

Psoriasis

Question 8

What causes urogenital reactive arthritis?

Answer 8

Chlamydia trachomatis

Question 9

What causes gastrointestinal reactive arthritis?

Answer 9

Salmonella & shigella

Question 10

Most common causing pathogen of septic arthritis in adolescents?

Answer 10

N. Gonorrhea

Question 11

Most common causing pathogen of septic arthritis in sickle cell patients?

Answer 11

Salmonella

Question 12

Most common causing pathogen of septic arthritis in humant bite?

Answer 12

Eikenella

Question 13

Most common causing pathogen of septic arthritis?

Answer 13

S. Aureus & S. Viridans

Question 14

What is radiofrequency ablation used for?

Answer 14

Osteoid osteoma

Question 15

What is botox injection indicated for?

Answer 15

Cerebral palsy and CVA

Question 16

Side effects of contrast material used in radiology

Answer 16

Nephropathy & allergic rxn

Question 17

When is CT used?

Answer 17

More bone details (fracture)

Question 18

When is MRI used?

Answer 18

Soft tissue involvement

Question 19

When is US used ?

Answer 19

Tendon tears, dynamic pathologies and in injection of needle into joint

Question 20

When is nuclear medicine studies used?

Answer 20

Tumors and infections

Question 21

What is fluroscopy?

Answer 21

An x-ray video

Question 22

When is radiology used?

Answer 22

6 Is 👁️
2 Ds 🍆
And a tumor

Question 23

What is an avulsion fracture?

Answer 23

A part of the bone broken off due to tendon injury (pulls the bone off) happens in pediatric age more

Question 24

Stress fracture vs insufficiency fracture

Answer 24

In stress it’s a normal bone with abnormal stress and the opposite for insufficiency

Question 25

What is bong ring phenomenon?

Answer 25

Fracture to one part of the bony ring results in fracture to the opposite part in that ring (pelvis,shoulder,mandible)

Question 26

What to do if you find a fat pad sign?

Answer 26

Look for fracture and order a CT if you can’t find it

Question 27

MRI vs US in soft tissue?

Answer 27

MRI is for deeper issues

Question 28

What is light bulb sign?

Answer 28

Humerus appears like a light bulb in posterior dislocation

Question 29

What view is best for post. Humerus dislocation?

Answer 29

Lateral

Question 30

What view is best for clavicular dislocation?

Answer 30

Weight-bearing

Question 31

Which part of skin are histamines found?

Answer 31

Dermis

Question 32

What color are tinea capitis, erythrasma and pseudomonas infection in wood’s lamp?

Answer 32

Tine and pseudomona are green Erythrasma is coral pink

Question 33

When is tzanck smear used?

Answer 33

Vesiculobuous rash

Question 34

What is patch test used for?

Answer 34

DTH

Question 35

Red flags of orthopedics

Answer 35

Neurological deficits and B symptoms

Question 36

What does the mobility of mass indicate?

Answer 36

Immobility is malignant

Question 37

Name the following tests: Meniscus ACL PCL Patella Shoulder (ant instability) DDH

Answer 37

Mackmury & apley compression Lachman and ant drawer Post drawer Apprehension & ballottement Aprehension Barlow and ortolani

Question 38

Which structure is always pictured laterally?

Answer 38

Knee

Question 39

What is a bone scan used for?

Answer 39

Assessing infections and metastasis

Question 40

What injury causes giving way?

Answer 40

Posteriolateral branch of ACL (controls stability)

Question 41

Name the ottawa rules (x ray for knee injury)

Answer 41

**O**ver 55 **T**enderness in fibular head **T**enderness in patella **A**bility to flex 90° **W**eight- bearing **A**bility

Question 42

What collagen type are ligaments and aurticular surfaces ?

Answer 42

Ligaments = 1 Articular surfaces = 2

Question 43

Why does pseudomonas arigonosa green on agar?

Answer 43

Pyocyanin

Question 44

Vector and disease of onchocerca volvulus?

Answer 44

Black fly, river blindness

Question 45

Vector and disease of Loa loa?

Answer 45

Deer fly, eye worm

Question 46

Vector of dracunculus medinesis and infective stage

Answer 46

Cyclops and larvea