MSK Flashcards

(70 cards)

1
Q

What is genu varum

A

Bow legs (knees far apart, legs bowed)

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2
Q

What are pathological causes of gene varum

A
Rickets 
Blount disease (condition in black children, unilateral)
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3
Q

What is genu valgum

A

knees close when standing, feet far apart

Intermalleolar distance >8cm

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4
Q

What is flat feet

A

aka pes planes

flat medial longitudinal arch (normal before child walks, because of fat pad under foot)

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5
Q

What are three main causes of intoning

A

Metatarsus varus (forefoot adduction)
Medial tibial torsion
Femoral anteversion

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6
Q

What is the latin name for clubfoot

A

Talipes equinovarus

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7
Q

What is the cause of clubfoot

A

oligohydramnios
deformity in utero, from intrauterine compression

OR malformation

OR neuromuscular disorder

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8
Q

What is the foot like in clubfoot

A

inverted
supinated
in plantar flection

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9
Q

How do you treat clubfoot

A

Ponseti method (plaster casing and bracing)

Surgery may be required if severe (Achilles tenotomy)

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10
Q

What is vertical talus like

A

Foot is stiff

Rocker bottom foot

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11
Q

What is pet cavus

A

High arched foot

Associated with neuromuscular disorder e.g. Friedrich Ataxia

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12
Q

What is scoliosis

A

lateral curvature of the spine

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13
Q

What is the dangerous complications scoliosis

A

cardiorespiratory failure

from distortion of the chest

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14
Q

What is torticollis

A

WRY neck

  • restriction of head turning
  • mobile, non-tender nodule (felt within SCM)

W

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15
Q

What is the most common cause of torticollis

A

SCM tumour

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16
Q

What are chromosomal causes of hypermobility

A

Downs

Marfans, Ehler Danlos

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17
Q

What is complex regional pain syndrome

A

Musculoskeletal pain of unknown origin

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18
Q

Who does complex regional pain syndrome occur in

A

teenage females

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19
Q

What kind of pain is experienced in complex regional pain syndrome

A

Extreme / incapacitating
may be locatlised on foot and ankle

Hyperanaestheisa
allodynia

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20
Q

What is osteomyelitis

A

infection of metaphysis of long bones (e.g. femur, tibia)

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21
Q

What does osteomyelitis arise from

A

Haematogeneous spread

Direct spread from infected wound

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22
Q

What are pathogens causing osteomyelitis

A

S aureus
Streptococcus
H influenza

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23
Q

What are features of osteomyelitis

A

painful, immobile limb
swelling and tenderness over site
movement cause s èpain
acute febrile illness

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24
Q

What investigations do you do for osteomyelitis

A
Blood cultures (+ve)
WCC, CRP 
X rays (normal until 7-10 days, when you get new bone formation) 
MRI 
Radionucleotide bone scan
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25
What is management for acute osteomyelitis
high dose IV antibiotics | surgical debridement
26
What are the two most malignant types of bone tumour
Ostoegenic sarcoma | Ewing tumour
27
What is Osgood-Schattler Disease
Osteochondritis of patellar tendon insertion at the knee
28
Who does Osgood-Schattler Disease affect
Adolescent males who are very physically active
29
What are key symptoms of Osgood-Schattler Disease
knee pain after exercise localised tenderness swelling over tibial tuberosity
30
What is management for Osgood-Schattler Disease
Stop sporting activity Pain relief (NSAID, paracetamol, ice packs)
31
What is chondromalacia patellae
Softening of thew articular cartilage of the patella, affecting adolescent females
32
What is osteochondritis dissecans
avascular necrosis of subchondral bone
33
What is Perthes disease
Avascular necrosis of the capital femoral epiphysis due to interruption of blood supply Followed by revascularisation and reossification over next 2 years
34
What is reactive arthritis
Transient joint swelling following extra-articular infection
35
What causes reactive arthritis
``` Enteric bacteria (salmonella, shigella, campylobacter) STI (chlamydia, gonorrhoea) ```
36
How do you treat reactive arthtritis
You DON'T - SELF RESOLVING
37
What is septic arthritis
Serious infection of the joint that can lead to bone destruction
38
How do you treat septic arthritis
Prolonged course of antibiotics (IV 2 weeks, oral 4 weeks)
39
What is juvenile idiopathic arthritis
persistent joint swelling >6 weeks presenting before 16 years of age in absence of any other causes
40
How do you classify JIA
Polyarthritis >4 joints | Oligoarthritis <4 joints
41
What are clinical features of JIA
Gelling (stiffness after rest) Morning stiffness Joint pain, swelling Intermittent limp
42
What investigations should you consider for JIA
ANA
43
How do you manage JIA
Specialised paeds rheum clinic NSAIDS Corticosteroids DMARD (methotrexate PO/SC)
44
What is achondroplasia
short stature short limbs large head with frontal bossing pincer grip
45
What is thanatophoric dysplasia
results in stillbirth | large head, very short limbs
46
What is arthrogyposis
stiffness and contractor of joints
47
What is the difference in presentation between Osgood-Schattler and Chondromalacia Patellae
OSD: males, knee pain after lots of exercise chondromalacia patellae: females, anterior knee pain on rising from sitting, walking upstairs
48
What is another differential for knee pain after exercise
osteochondritis dissecans
49
What is the presentation of Perthes disease
``` 5-10 year olds limp / knee pain Pain worse after exercise Reduced range of movement stiffness One leg shorter than other ```
50
How do you investigate Perthes
Bilatera x ray (widening of joint space, m decrease in femoral head size) Bone scan, MRI
51
How do you manage Perthes disease
Acute pain with analgesia <5yo good prognosis from observation only >5yo consider surgery
52
what is pathophysiology of Slipped Capital Femoral Epiphtysis
fracture through growth palate of femur > slippage of femoral ahead epiphysis poster-inferiorly
53
what is classic person that will present with Slipped Capital Femoral Epiphysis
Obese teenager Other metabolic abnormality (hypothyroid, hypogonad) 10-15 year old
54
What is presentation of Slipped Capital Femoral Epiphysis
gradual onset limp hip or knee pain pain on abduction and internal rotation, restricted movements
55
How do you confirm Slipped Capital Femoral Epiphysis diagnosis
Bilateral hip X ray (AP + frog view)
56
How do you manage Slipped Capital Femoral Epiphysis
DONT LET THE PATIENT WALK analgesia immediate ORTHO REVIEW Surgical repair: internal fixation
57
What is pattern of inheritance for achondroplasia
AUTOSOMAL DOMINANT So in GoT one parent must've been a dwarf also !!
58
What children need to have an USS at 6 weeks to check for DDH?
``` Breech presentation at 36/40 (regardless of presentation at delivery) Breech delivery (incl <36/40) Family history of DDH ```
59
when do you change from USS to X ray for DDH
6 months
60
What DMARD is first line in JIA
Methotrexate
61
how do you manage patient with rickets
if vit D deficient: daily calcium + ergocalciferol / cholecalciferol
62
what X ray finding do you see in SCFE
Thethowan's sign: line of Klein does not interset superior femoral epiphysis
63
what is the most common cause of acute hip pain in children, and when does it occur
transient synovitis often with / after viral infection
64
what are symptoms of transient synovitis
sudden onset pain in the hip / limp no pain at rest decreased range of movement mild febrile / afebrile
65
What is still's disease?
Arthritis with SALMON PINK RASH + pyrexia, uveitis, anorexia, WL essentially a systemic form of JIA
66
what rash do you get in juvenile dermatomyositis
helkiotropid discoloration of eyelids erythema over bridge of nose
67
what are findings on X ray of Perthes
widening of joint space | then decreased femoral head size
68
what are findings on X ray of SCFE
Trethowan's sign: lines of klein does not intersect femoral head
69
what criteria can you use to differentiate septic arthritis from transient synovitiss
KOCHER's CRITERIA
70
What are Kocher's criteria
- Fever >38.5 - refusal to bear weight on affected side - Raised ESR/CRP - Raised WCC