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MSK > Orthopaedics MCQs > Flashcards

Orthopaedics MCQs Flashcards

1
Q

nerve implicated in radial head injury

A

posterior interosseous nerve (branch of radial nerve) - motor intervention to posterior forearm

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2
Q

Medial rotation + forced valgus of knee young girl, which structure is least likely to be injured out of PCL, ACL, MCL and medial meniscus

A

PCL

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3
Q

Salter harris

A
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4
Q

What causes foot drop?

A

Peroneal nerve or L4

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5
Q
  • Sural nerve sensory distribution of which part
A

Lateral calf

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6
Q
  • Inversion injury of ankle which tendon causes fracture of 5th metatarsal, what muscle?
A

Peroneus brevis

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7
Q
  • Spiral fracture humerus which nerve does it damage
A

Radial

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8
Q
  • Which nerve supplies extensor digitorum communis
A

Radial

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9
Q
  • What does Spurlings test test for
A

Cervical radiculopathy

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10
Q

Prolapsed lumbar intervertebral disc
5) 90% of clinical cases result from prolapses at L4/5 and L5/S1 levels
6) Loss of the knee jerk is a good sign of L5/S1 disc prolapse
7) Bladder dysfunction and paraplegia may result
8) Symptoms and signs will settle with conservative treatment in greater than 70% of cases

A

5
7
8

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11
Q

Management of a compound tibial fracture
9) Primary suture should not normally be carried out if the wound is more than 8 hours
old
10) Appropriate anti-tetanus prophylaxis should be prescribed
11) Ampicillin is the best choice of antibiotic to prevent infection
12) External fixation of the fracture allows good access for continued wound
management

A

10,

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12
Q

Lateral dislocation of the patella
13) It occurs more commonly in women
14) It is frequently bilateral
15) Fractures do not occur with this injury
16) In the acute stage would be associated with a haemarthrosis

A

13, 16

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13
Q

Osteoarthritis of Hip
17) Pyrophosphate crystals are always present in the synovium
18) Subchondral cysts are a typical radiological feature
19) It may occur as early as the third decade, after congenital dislocation of the hip
20) The typical patient has an abduction and internal rotation contracture of the hip

A

19, 20

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14
Q

Carpal Tunnel Syndrome
21) Wasting of the hypothenar muscles may occur
22) Abnormal sensation around the fingernail of the middle finger
23) Weakness of thumb abduction
24) A positive Phalen’s test

A

22
23
24

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15
Q

Which of the following nerve and muscle combinations are TRUE?
29) Median nerve supplies pronator teres and flexor carpi radialis
30) Common peroneal nerve supplies tibialis anterior and peroneus brevis
31) Ulnar nerve supplies flexor carpi ulnaris and adductor pollicis
32) Radial nerve supplies triceps and wrist extensors

A

29
30
31
32

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16
Q

A 50-year-old male develops acute agitation and decreased oxygen saturation following a
femoral shaft fracture. Which of the following are TRUE?
33) A blood transfusion is likely to help
34) Pain relief in the form of Opioids is required to control the agitation
35) High flow oxygen treatment is acutely harmful
36) Infection should be considered the most likely cause

A

Fat embolism - blood transfusion?

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17
Q

Spinal osteomyelitis in adults
37) Between 40% and 50% of cases have had urinary infection or instrumentation
38) Bacteriological diagnosis can be obtained by needle aspiration of the disc space
39) The radiological appearances cannot be distinguished from tuberculosis
40) Changes of disc space loss and vertebral erosion are apparent before symptoms arise

A

F
T
F
F - chronic xray signs

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18
Q

. What is true of osteomyelitis?
* Oral flucloxicillin is the best management because the most likely pathogen is Staph Aureus
* Antibiotics should be continued for at least 6 weeks

A

Both true

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19
Q
  1. What is true of acute osteomyelitis?
    * Usually occurs in children
    * Best seen on MRI
    * Staph Aureus is the most common pathogen
    * All of the above
A

All of above

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20
Q
  1. Which of these is NOT associated with THJR?
    * Avascular necrosis of the femoral head *
    * Posterior acetabular fracture
    * Sciatic nerve palsy
    * PJI infection
A

Avascular necrosis of the femoral head *

21
Q
  1. Which of these is not in the Canadian C-spine rules for radiography after cervical spine trauma
    o Active rotation of cervical spine less than 45 degrees
    o Age over 65 ^
    o Audible clicking of the neck on movement *
    o Parasthesia of extremities
A

Audible clicking of the neck on movement *

22
Q
  1. A 50 year old biker has a high speed crash. He has groin pain and is haemodynamically unstable. What anatomical feature should be fixed with a hip binder to stabilise him haemodynamically
    * Pubic rami
    * Iliac wing
    * Pubis symphisis /diaphysis
    * Acetabular fracture
A

Think it is actually the greater trochanter

23
Q
  1. The medial meniscus is more likely to be injured than the lateral meniscus due to:
    o Reduced mobility ^
    o Reduced fibroelasticity
    o Reduced vascularity
    o Reduced
A

Reduced mobility ^

24
Q
  1. Which is true of the humerus
    o The greater tuberosity of the humerus is lateral to the acromion process *
    o The greater tuberosity is medial to the lesser tuberosity
    o The head of the humerus in covered by synovial membrane
    o [?]
A

top and synovial membrane*

25
Q
  1. The ossification centre of the femoral head appears:
    * In the 1st year of life
    * In the 2nd year of life
    * In the 3rd year of life
    * In the 4th year of life
A
  • In the 1st year of life
26
Q
  1. What’s the most common direction of a native joint dislocation in hip & shoulder?
    * Anterior-anterior
    * Posterior-inferior
    * Anterior-posterior
    * Posterior-anterior
    * Posterior-posterior
A
  • Posterior-anterior
27
Q
  1. Carpal tunnel syndrome frequently causes:
    * Wasting of the 1st dorsal interossei
    * Night waking with numbness and pain
    * Numbness over the dorsal aspect of the thenar eminence
    * Weakness of thumb adduction
A

Night waking with numbness and pain + thener eminence

28
Q
  1. A 75-year-old man who had a good result from bilateral THR 12 years ago but now has increasing pain in walking in the groin and thigh when walking over the last year on the left side. He needs to use a stick and has had to give up golf. Blood tests: ESR = 10, CRP <4.
A

Aseptic loosening

29
Q
  1. Following are potential complications of total hip joint replacement except for?
    * Leg length discrepancy
    * Sciatic nerve palsy
    * Acetabular posterior wall fracture
    * Avascular necrosis of femoral head
A
  • Avascular necrosis of femoral head
30
Q
  1. The femoral nerve supplies the:
    * Tensor fascia latae
    * Pectineus
    * Gracilis
    * Psoas major
A

Pectineus

31
Q
  1. Spinal metastatic tumours are most commonly found in:
    * Cervical spine
    * Thoracic spine
    * Lumbar spine
    * Sacrum
A
  • Thoracic spine
32
Q
  1. Which of the following would you not expect to find in a patient with a left-sided C6 cervical radiculopathy due to a disc herniation? (select two)
    * Loss of sensation over the left thumb
    * Reduced power in left wrist extension
    * Babinski reflex sign on left foot
    * Hypertonia of the left biceps
A
  • Loss of sensation over the left thumb
  • Reduced power in left wrist extension
33
Q
  1. An elderly frail lady presents with femoral neck fracture that is intra-capsular in the sub-capital location with significant displacement. She normally walks with a stick for short distances only. Which of the following treatment is optimal? Select one:
    * Intramedullary nail fixation
    * Excision arthroplasty
    * Dynamic hip screw fixation
    * Hemiarthroplasty
    * External fixation
A
  • Hemiarthroplasty
34
Q
  1. Which of the following is NOT a feature of cauda equina? Select one:
    * Loss of gluteal cleft sensation
    * Hyper-reflexia
    * Sexual dysfunction
    * Bladder retention
A

Hyper-reflexia

35
Q
  1. 58 year-old male with long history of a fixed flexion deformity of his little finger. He is unable to straighten his metacarpal and proximal interphalangeal joint. No history of trauma. Examination showed a thickened cord in his palm extending into the little finger itself. Which of the following risk factor is not known to be associated with this condition? Select one:
  • Overuse
  • Alcoholism
  • Genetics
  • Anti-epileptic medications
  • Diabetes
A
  • Overuse
36
Q

2) Muscle responsible for flexion of the knees and hip

A

Sartorius

37
Q

A child presenting with tibial fracture (Salter Harris Type 2) , what features are not
characteristic of growth plate injury?

A
  • Joint contracture
38
Q

What does the superior gluteal nerve supplies?

A

gluteus medius and minimus and tensor fasciae latae muscles

39
Q

7) What are the features of ulnar nerve compression?
- Wasting of the hypothenar eminence + loss of motor function appears first
before sensory symptoms – FALSE
- Most common site of compression is at the wrist – TRUE
- Numbness and tingling at the middle and index finger – FALSE
- Loss index finger abduction - FALSE

A
40
Q

Where does the flexor carpi radialis attach to?

A

Base of second metacarpal

41
Q

9) Which of the following is false regarding the biceps tendon?
- Innervated by musculocutaneous nerve – T
- Powerful pronator and flexor of the forearm - F
- Attaches onto the radial tuberosity + biceps aponeurosis - T
- Attaches onto the coracoid process – T

A
42
Q

Which of the following rotator cuff muscles are not associated with wear and tear?

A
43
Q

lIf the median nerve was severed at the elbow, what symptoms would you get?

A

Hand of benediction
Thumb (abduction)
Flexion of wrist + pronation weak

= FOREARM CONSTANTLY SUPINATED, WRIST FLEXION WEAK

CANNOT FLEX THUMB

Cannot flex at MCP joints or extend IP joints of index + middle fingers

44
Q
  1. Most common cause of osteomyelitis (came up twice)
    a. Staph aureus
    b. Strep haemolyticus
    c. E coli
    d. Clostridium welchii
A

Staph aureus

45
Q
  1. Which is not a complication of posterior hip dislocation?
    a. Femoral nerve damage
    b. Siatic nerve damage
    c. Femoral head, shaft or neck fracture
    d. AVN of femoral head
A

Femoral nerve damage

46
Q
  1. The medial meniscus is injured more commonly than the lateral menisucs because it has reduced what?
    a. Mobility
    b. Vascularity
    c. Nerve innervation
    d. Fibroelasticity
A

Mobility

47
Q
  1. Something about which is not a function of the branches of common peroneal nerve?
    a. Action over the hip ?
A
48
Q
  1. Which of the following is false regarding the biceps tendon?
    a. Innervated by musculocutaneous nerve
    b. Powerful pronator and flexor of the forearm
    c. Attaches onto the radial tuberosity + biceps aponeurosis
    d. Attaches onto the coracoid process
A

Powerful pronator and flexor of the forearm

49
Q
  1. Haemoarthrosis is a complication of which of these?
    a. ACL rupture
    b. Patella dislocation
    c. Haemophillia
    d. All of the above
A

All

MSK (7 decks)

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