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MSK Flashcards

1
Q

At what age should you begin ordering dexa scans for male patients? What about female patients?

A

70 for males, 65 for females

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2
Q

Give the DEXA score for osteopenia and osteoporosis.

A

Osteopenia = 1 to 2.4 standard deviations osteoporosis = 2.5 standard deviations or greater

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3
Q

What fracture is the #1 cause of compartment syndrome?

A

Tibial shaft fracture

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4
Q

A patient’s lab work shows positive Smith antibody and positive double-stranded DNA antibodies. What is the most likely diagnosis?

A

Lupus

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5
Q

Where are Bouchard’s nodes found?

A

Proximal interphalangeal joint (PIP)

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6
Q

What will an x-ray show in acute osteomyelitis?

A

Nothing - it will show bone destruction in chronic osteomyelitis.

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7
Q

What is the best imaging to diagnose osteomyelitis?

A

Either a bone scan or an MRI will provide the diagnosis.

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8
Q

A 22 year old male patient presents with what is clearly a septic knee. You also notice lesions on his hands and feet. What is the most likely pathogen?

A

Neisseria gonorrhoeae

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9
Q

What would you expect the WBC count to be in the joint fluid of an infected knee?

A

> 50,000 at a minimum and probably much higher.

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10
Q

A patient presents with a painless mass in her right wrist. What is the most likely diagnosis?

A

Ganglion cyst

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11
Q

What is the age range for osteosarcoma? Where are they most typically found in the body?

A

Osteosarcoma usually occur in 15-25 year old males and are most commonly found around the knee.

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12
Q

You think a patient may have an osteoid osteoma due to his complaints of severe night pain. You set him up for an x-ray; but in the meantime what medication do you start him on?

A

If it is truly an osteoid osteoma ibuprofen will resolve his pain.

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13
Q

Clicking or locking of the knee indicates what diagnosis?

A

Meniscal tear

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14
Q

A 65 year old presents complaining of severe pain in his great toe that began when he woke up this morning. It is swollen red and very tender. What is the most likely diagnosis?

A

Gout would be number one because of the location, but you might also think about an infection.

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15
Q

What uric acid level helps to confirm a diagnosis of gout?

A

> 7.5

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16
Q

What is the medical treatment for gout?

A

Allopurinol colchicine

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17
Q

A pathology report comes back with positive birefringent crystals. What is the most likely diagnosis?

A

Pseudogout

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18
Q

A patient with a history of hepatitis B presents complaning of bilateral knee pain

A

Polyarteritis nodosa

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19
Q

You suspect a patient has polyarteritis nodosa. What is the test for a definitive diagnosis and what is the treatment?

A

Biopsy, high dose steroids

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20
Q

On physical exam you notice ulnar deviations and swan neck deformities. What is the most likely diagnosis?

A

Rheumatoid arthritis

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21
Q

A positive Neer’s test indicates what diagnosis?

A

Rotator cuff impingement

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22
Q

List three medication that may cause lupus.

A

Procainamide, isoniazid and Quinidine

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23
Q

What test do you do for Sjogren’s syndrome?

A

Schirmer test

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24
Q

A patient with rheumatoid arthritis is heading to the OR for open reduction and internal fixation of the ankle. In addition to ankle films, what other x-rays should you get?

A

C-spine, anesthesia will want them due to concerns about instability of C1 & C2.

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25
Q

Which carpal bone has a high rate of nonunion and occult fracture?

A

Scaphoid

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26
Q

What medication is used for patients with lupus?

A

Systemic steroids

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27
Q

Scleroderma limited version has five main characteristics for which the CREST acronym is often used. What are those five things?

A

Calcinosis, Raynaud’s, esophageal dysmotility, Sclerodactyly, Telangiectasia

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28
Q

There is a sunburst appearance on x-ray. What is the most likely diagnosis?

A

Osteosarcoma

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29
Q

Anatomically where are 80% of clavicle fractures located?

A

Middle 1/3

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30
Q

A pathology report comes back showing negatively birefringent crystals. What is the most likely diagnosis?

A

gout

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31
Q

What are the four muscles of the rotator cuff?

A

Commonly referred to as the SITS muscles they are Supraspinatus, Infraspinatus, Teres minor, Subscapularis

32
Q

Describe the characteristics of a lytic lesion on x-ray.

A

Spiculated, elevated periosteum bone destruction (think bad bad things

33
Q

What ligament is most commonly injured in an ankle sprain?

A

Anterior talofibular ligament ATFL

34
Q

Vasculitis with a hepatitis B history should make you think of what diagnosis?

A

Polyarteritis nodosa

35
Q

What is the most common fracture in children?

A

Clavicle

36
Q

A fat pad sign on a lateral x-ray of the elbow has what significance?

A

It is blood in the joint indicating a fracture even if the fracture line cannot be seen.

37
Q

A patient presents with progressive neck and proximal muscle weakness. On physical exam you see a reddish purple maculopapular rash. Her lab work shows an anti-Jo-1 antibodies. What is the most likely diagnosis?

A

Polymyositis

38
Q

Which way does a Colles fracture angulate: dorsal or volar? What about a Smith fracture?

A

Colles = Dorsal, Smith = Volar

39
Q

Tenderness over the anatomical snuffbox is indicative of what fracture?

A

Scaphoid

40
Q

What is the most common fracture in a patient with osteoporosis?

A

A compression fracture of a vertebral body followed by hip fractures.

41
Q

A 15 year old boy presents complaining of night pain in the pelvis. Since you have no idea what to do, you order an x-ray. The report comes back with a description of a mass with an “onion skin appearance.” What is the most likely diagnosis?

A

Ewing sarcoma

42
Q

What is the name for the 4th and 5th metacarpal fractures that often result from throwing a punch?

A

Boxers fracture

43
Q

A new mother presents with pain over the radial wrist. She has a positive Finkelstein’s test. What is the most likely diagnosis?

A

Dequervain’s tenosynovitis

44
Q

A positive McMurry indicates what diagnosis?

A

Meniscal tear Night splint

45
Q

What is the first line treatment for carpal tunnel?

A

Night splint

46
Q

What is the most common cause of C-spine fractures?

A

Motor vehicle accidents

47
Q

What is the medical term for hunchback?

A

Kyphosis

48
Q

What is another term for podagra?

A

Gout

49
Q

A patient presents to the ER with saddle anesthesia and loss of bowel and bladder function. What is the most likely diagnosis?

A

Cauda equina

50
Q

A patient with HIV presents with severe groin pain. What is the most likely diagnosis?

A

Avascular necrosis of the femoral head. Antiretroviral medications put patients at an increased risk of AVN.

51
Q

A 95 year old female presents to ER after a fall in her home. Her left leg is shortened and externally rotated. What is the most likely diagnosis?

A

Hip fracture

52
Q

You recommend bisphosphonates for a patient with osteoporosis. What instruction do you give her for immediately after taking the medication?

A

Remain upright for 30 minutes

53
Q

What is the most common cause of a hip dislocation? Is it usually anterior or posterior?

A

MVA posterior

54
Q

Which of the four rotator cuff muscles is most commonly injured?

A

Supraspinatus

55
Q

What is the medical term for tennis elbow?

A

Lateral epicondylitis

56
Q

What is a first line treatment for rheumatoid arthritis?

A

Methotrexate

57
Q

A patient presents to the ER after taking a baseball bat to the knee. He is unable to actively extend his knee. What is the most likely diagnosis?

A

Patella fracture

58
Q

Are most shoulder dislocations anterior or posterior?

A

Anterior

59
Q

What is the most useful physical exam test for diagnosing an ACL tear?

A

Lachman’s followed by anterior drawer

60
Q

What is the most common knee injury?

A

Medial meniscal tear

61
Q

Where are Heberden’s nodes found?

A

Distal interphalangeal joint (DIP)

62
Q

A patient presents with knee pain following a soccer game two days ago. He has joint line tenderness medially and feels a locking in the knee from time to time. What two physical exam tests should you do?

A

his is probably a medial meniscal tear. McMurry and Apley tests would be appropriate.

63
Q

A patient presents with conjunctivitis, urethritis, arthritis and oral lesions. What is the most likely diagnosis? What other lab might you expect to be positive?

A

Reactive arthritis, HLA B-27

64
Q

A 46 year old male comes into ER limping a little on the right side. He states that it felt as though he was kicked in the back of the leg during a soccer game, but clearly no one was behind him. What is the most likely diagnosis?

A

Achilles tendon rupture

65
Q

Anti-Jo-1 antibodies should make you think of what diagnosis?

A

Polymyositis

66
Q

A positive crossover test indicates what diagnosis?

A

Acromioclavicular joint injury (AC joint)

67
Q

A positive Hawkins test indicates what diagnosis?

A

Rotator cuff impingement

68
Q

A positive Finkelstein’s test indicates what diagnosis?

A

de Quervain’s tenosynovitis

69
Q

A positive Phalen and Tinel’s sign indicates what diagnosis?

A

Carpal tunnel

70
Q

A bamboo spine indicates what diagnosis?

A

Ankylosing spondylitis

71
Q

A positive straight leg test indicates what diagnosis?

A

Herniated disc

72
Q

An African American female presents with malar rash and a positive double-stranded DNA antibody. What is the most likely diagnosis?

A

Lupus

73
Q

Carpal tunnel affects what nerve and what parts of the hand?

A

Median nerve. Thumb pointer and ring fingers. Thenar wasting is sign of advanced disease.

74
Q

A patient has a silver-fork deformity on x-ray. What is the most likely diagnosis?

A

Colles fracture

75
Q

A positive Apley indicates what diagnosis?

A

Meniscal tear

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