orthopaedic paediatrics Flashcards

1
Q

when would you do spinal fusion on a child ?

A

cobb angle >45 degrees

11-13 years old

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2
Q

what is fused during spinal fusion surgery?

A

T2 fused to pelvis

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3
Q

what does normal motion depend on

A

-an appropriate adequate force acting via a rigid lever of appropriate length on a stable joint

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4
Q

what are some features of a normal gait?

A
  • stability in stance
  • clearance in swing
  • pre position of foot in terminal swing
  • adequate step length
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5
Q

what 3 types of scoliosis are there?

A

infantile <3
juvenile 3-10
adolescent 11-18

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6
Q

how do long bones grow?

A

from the physes- increase in length

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6
Q

how do long bones grow?

A

from the physes- increase in length

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7
Q

what zones does the physes consist of?

A
  • hypertrophic zone
  • proliferative zone
  • reserver zone
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8
Q

what is required for bone growth?

A
  • good diet
  • sunshine
  • vitamins
  • growth plates
  • hormones
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9
Q

how to assess growth?

A
  • growth chart
  • menalaus chart
  • moseley chart
  • look at lower limb
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10
Q

what is normal variation is babies knees?

A

start - varus
end up- valgus

then have normal knees

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11
Q

what suggests infection/being unwell in the bone?

A

Harris lines

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12
Q

what is a type 1 fracture?

A

goes through growth plate

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13
Q

diastrophic meaning

A

bent/curve

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14
Q

what does a higher GMFC mean?

A

-higher risk of dislocation

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15
Q

what can tiptoe walking suggest?

A
  • autism
  • congenital tightness of muscle
  • problem with CNS or PNS system
16
Q

what is this?

A

clubfeet/ CTEV

17
Q

what is CTEV?

A

Congenital deformity of foot causing feet to turn in (varus) due to in utero abnormal alignment of joint between talus, calcaneus and navicular

18
Q

who is clubfoot/ congenital talipes equinovarus more common in?

A
  • babies in breech position
  • oligohydramnio (low amniotic fluid content)
  • boys 2x more affected than girls
19
Q

what is the treatment for early clubfoot?

A

Ponsetti technique (early splinatge)

  • held in cast with 5 or 6 weekly changes
  • 80% require tenotomy of achilles to maintain correction
  • once correction achieved , child placed in brace consisting of boots attached to bar which worn 23 hours a day for 3 months and used during sleep until age 3-4
20
Q

what is SUFE (slipped upper femoral epiphysis)?

A

A condition where the femoral head epiphysis slips inferiorly in relation to femoral neck

21
Q

what causes slipped upper femoral epithysis (SUFE)?

A

The cause is not fully understood

-growth plate (physis) not strong enough to support body weight

22
Q

who is more likely to experience slipped upper femoral epithysis (SUFE)?

A
  • Linked to hypothyroidism or renal disease
  • More common in boys
  • More common if overweight
  • 10-16 yo
23
Q

how does SUFE present?

A

1/3 cases are bilateral

  • Pain and limp
  • limited movement
  • externally rotated foot
  • pain in knee, hip or groin (due to obturator nerve supplying both hip and knee)
  • loss of internal rotation of hip
24
Q

what investigations would be done for SUFE?

A

X-ray

MRI

25
Q

what view must be obtained on XRay for a patient wiht SUFE and why?

A

-lateral view to detect mild degrees of slip

26
Q

what treatment should be done for SUFE?

A

Urgent surgery to pin femoral head to prevent further slippage
-percutaneous pinning of hip
+/- pinning of other side
+/- open reduction of very severe slip

27
Q

what does a larger slip mean for the prognosis of a patient with SUFE?

A

worse prognosis

28
Q

how should a patient with acute SUFE be treated?

A

gentle manipulation

29
Q

what are the risks of gentle manipulation in SUFE?

A

AVN (avascular necrosis)

30
Q

what may need to be done for chronic SUFE?

A

osteotomy

31
Q

what is Perthe’s disease?

A

A rare childhood condition that occurs when there’s avascular necrosis/ compression osteochondritis of hip