MSK Flashcards

1
Q

what is a salter harris 1 fracture?

A

fracture through the physis only (XRAY can be normal)

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2
Q

what is a salter harris 2 fracture?

A

fracture through the physis and metaphysis

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3
Q

what is a salter harris 3 fracture?

A

fracture through the physis and epiphysis to include the joint

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4
Q

what is a salter harris 4 fracture?

A

a fracture involving the physis, metaphysis and epiphysis

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5
Q

what is a salter harris 5 fracture?

A

a crush injury involving the physis (XRAY may resemble type I and appear normal)

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6
Q

treatment for an undisplaced intracapsular fracture in a healthy patient?

A

internal fixation

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7
Q

treatment for an undisplaced intracapsular fracture in an unfit patient?

A

hemiarthroplasty

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8
Q

treatment for a displaced intracapsular hip fracture in a normal patient?

A

THR

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9
Q

treatment for a displaced intracapsular hip fracture in an unfit patient?

A

hemiarthroplasty

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10
Q

treatment for a stable extracapsular hip fracture?

A

DHS

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11
Q

treatment for an unstable extracapsular hip fracture?

A

IMD

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12
Q

which nerve root compression leads to weakness in foot and big toe dorsiflexion?

A

L5

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13
Q

which nerve root compression leads to weakness in knee flexion and sensory loss over anterior thigh?

A

L3

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14
Q

which nerve root compression leads to weakness in knee flexion and sensory loss over the anterior aspect of the knee and medial malleolus?

A

L4

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15
Q

which nerve root compression leads to weakness in plantar flexion of foot and a reduced ankle reflex?

A

S1

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16
Q

what is the first line treatment for SLE?

A

hydroxychloroquine

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17
Q

what myotome is incharge of hip flexion?

A

L1/2

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18
Q

what myotome is in charge of knee extension?

A

L3/4

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19
Q

what myotome is in charge of foot dorsiflexion?

A

L5

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20
Q

what myotome is in charge of ankle plantar flexion?

A

S1/2

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21
Q

what happens in an L5/S1 prolapse?

A

pain down to sole of foot
reduction in plantar flexion

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22
Q

what happens in an L3/4 prolapse?

A

pain down to medial ankle
loss of quadricep power
reduction in knee jerk

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23
Q

what happens in an L4/5 prolapse?

A

pain down to foot dorsum
loss of power to extensor hallucis longus and tibialis anterior

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24
Q

what is a galeazzi fracture?

A

fracture of the radius with an associated dislocation of the distal radioulnar joint

25
Q

what does colchicine interact with?

A

atorvastatin to cause rhabdomyolysis

26
Q

what antibodies are associated with drug induced lupus?

A

anti histones

27
Q

how long do you give abx for in septic arthritis?

A

4-6 weeks

28
Q

what is co prescribed with NSAIDs in patients with osteoarthritis?

A

PPI

29
Q

what antibodies are present in GPA?

A

cANCA
PR3

30
Q

what antibodies are present in MPA?

A

pANCA
MPO

31
Q

what antibodies are present in EGPA?

A

pANCA
MPO

32
Q

what is the haversian canal?

A

vertical thing that can be seen in bone histology

33
Q

what is a volkmann canal?

A

horizonal thing that can be seen on bone histology, connecting haversian canals together

34
Q

on which bones articular surface is the thickest hyaline cartilage found?

A

patella

35
Q

which nerve is at risk in a supracondylar fracture of the distal humerus?

A

median

36
Q

what is myositis ossificans?

A

a condition where heterotopic ossification (bone forming outside the skeleton) occurs in muscles usually after an injury

37
Q

which ligament is usually affected in a patella dislocation?

A

ligament restraining it on the MEDIAL side usually has to tear

38
Q

what is the sarcomere?

A

the region from one Z line to the other

39
Q

are steroid injections done in Achilles tendonitis?

A

no due to risk of rupture

40
Q

what is a key feature of polymyalgia rheumatica?

A

raised inflammatory markers

41
Q

what is a swan neck deformity?

A

hyperextension of PIP
flexion of DIP

42
Q

what is a boutonnières deformity?

A

flexion of PIP
hyperextension of DIP

43
Q

what type of bones is found at the epiphysis?

A

cancellous/trabecular

44
Q

what type of bone is found at the shaft (diaphysis) of bone?

A

dense cortical bone

45
Q

what is the line surrounding osteons called?

A

cement lines

46
Q

where are chondrocytes located within the extracellular matrix?

A

lacuna

47
Q

what is a bundle of muscle fibres called?

A

fasicle

48
Q

which nerves does sciatica usually affect?

A

usually compression of L5/S1

49
Q

what kind of vasculitis is polyarteritis nodosa?

A

medium sized

50
Q

who does polyarteritis nodosa usually affect?

A

middle aged men
associated with hep B infection

51
Q

how does polyarteritis nodosa present?

A

fever, malaise and arthralgia
WL
?testicular pain

52
Q

what investigation is used in psoas abscess?

A

CT abdo

53
Q

what is compression osteochondritis of the 2nd metatarsal head called?

A

freibergs disease

54
Q

what is compression osteochondritis of the navicular bone called?

A

kohlers disease

55
Q

what is compression osteochondritis of the lunate of carpus called?

A

keinbocks disease

56
Q

what is compression osteochondritis of the capitulum of elbow called?

A

panners disease

57
Q

what is compression osteochondritis of the vertebrae called?

A

scheurmanns disease

58
Q

what is simmonds triad?

A

palpation, examining the angle of declination at rest and the calf squeeze test

59
Q

what is the definition of a monteggia fracture?

A

Dislocation of the proximal radioulnar joint in association with an ulna fractur