peds ortho surg Flashcards

1
Q

def. hip dysplasia

A

abnormal dev. of the femoral head and acetabulum

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2
Q

spectum of instability (5)

A
  1. subluxatable
  2. dislocatable
  3. subluxated (Reducible)
  4. dislocated (reducible)
  5. irreducible
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3
Q

5 risk factors for DDH

A
  1. breech
  2. fam hx
  3. female
  4. 1st born - less room
  5. swaddled babes
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4
Q

nat Hx of DDH

A
  • leg length discrepancy
  • scoliosis
  • ipsilateral knee pain and deformity
  • gait abnormal
  • low back pain
  • degen arth
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5
Q

4 clinical tests for DDH

A
  1. assymetric abduction (should be >45)
  2. barlow’s (clunk when hips adducted)
  3. ortolani (clunk when hip abducted and upward)
  4. galeazzi - shorter thigh segment
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6
Q

5 DDH findings in children >3months

A
  1. instability rare
  2. limited ROM
  3. leg lenght disc
  4. painless limp
  5. imaging studies
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7
Q

2 imaging studies and indications

A
  1. US
    - coronal and trans planes
    - high risk bbs
  2. x-rays
    - when ossific nucleaus begun
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8
Q

what are AAP guidelines for DDH

A
  1. screen all before discharge
  2. 2-week exam
  3. well baby exams until walking
  4. barlow or ortolani - refer
  5. imaging at 3-4 weeks for risk factors
  6. refer if imaging prostive
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9
Q

DDH mgmt

A
  • pavlik harness up to 6 months
  • full time for 6 weeks
  • U/s to confrim reduction
  • abandon if not better in 3 weeks
  • night time for 6 weeks
  • effective in majority
  • not extra diapers
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10
Q

2ry mgmt of DDH

A
  • closed reuction with spica cast
  • for failure of harness
  • older than 6 mo
  • adductor tenotomy
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11
Q

DDH surgical mgmt

A
  • open reduction and casuloraphy
  • pevic osteotomy after 18 months
  • femoral shrotening in older child
  • risk of avasc. necrosis
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12
Q

def. clubfoot

A

talipes equines varus

  • male>female
  • diagnoses prenatally
  • fam hx
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13
Q

4 idiopathic clubfoot etiologies

A
  1. mechanical
  2. neuromucular
  3. arrested fetal dev.
  4. inherited
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14
Q

4 syndromic causes of clubfoot

A
  1. spina bifida
  2. arthrogryposis
  3. cerebral palsy
  4. polio
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15
Q

5 findings in club foot

A
  1. hindfoot equinus
  2. deep posterior crease
  3. empty soft heel
  4. hinffoot varus
  5. midfoot cavus
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16
Q

what is calcaneovalgus foot

A

not clubfoot

- will fix spontaneously

17
Q

6 treatment goals for clubfoot

A
  1. plantigrade
  2. flexible
  3. painless
  4. normal shoe wear
  5. funcitonal
  6. close to normal appearance
18
Q

what is ponsetti treatment

A
  • manipulation prior to each casting
  • weekly changes of cast
  • CAVE sequential correction
  • tenotomy of achilles
  • cast for 3 more weeks
  • foot orthosis to maintain
19
Q

effects of ponsetti

A

95% eliminated surgery

  • recurrence in up to 20%
  • poor compliance
  • need to repeat serial casting
20
Q

what is surg for clubfoot

A

rare nowadays

  • failed non-operative
  • posteriomedial release of joint capsule and tendons
  • pin to maintain position
  • brace for 1-2 years
21
Q

consequence of bow legges

A
  • constmetic
  • growth dist
  • joint laxity
  • joint instability
  • abnormal gait
  • osteoarthritis
  • pain
  • funct. probs
22
Q

DDx for bow legs (6)

A
  1. physiologic
  2. blounts
  3. metabolic - ricket and renal
  4. skeletal dysplasias
  5. trauma
  6. infection
    7 tumor
23
Q

how does alignment change with age

A

swtich from varus to valgus around 2 years

24
Q

6 parts to Phx

A
  1. body habitus
  2. general dysmorphia
  3. static assessment of alignment
  4. dyanmic assess of walking
  5. supine - ROM and joint stability
  6. prone - torsion profile
25
Q

features of physiologic genu varus

A
  • early walker
  • Fam Hx
  • bilateral
  • femur and tibia bowed
  • no joint laxity
  • normal physes
26
Q

features of infantile blount’s

A
  • onset as toddler
  • decreased medial physial plate
  • increasing varus
  • in toe-ing
  • varus thrust
  • commonly bliat
  • F>M
  • obesity and blacks
27
Q

mgmt of blounts

A
  • early osteotomy (before 4)
  • over correct
  • role for guided growth
  • litte evidence for braces
28
Q

features of late onset blounts

A
  • 5-10yo
  • obesity common
  • unilateral tibia vara common
  • knee pain
  • assess femoral alignement
29
Q

mgmt of late onset blounts

A
  1. restore mech axis
    - acute correction
    - gradual with external fixator
    - surg
  2. minimize risk of recurrence
    - earlyintervention
    - over correct
  3. consider limb length
30
Q

features of ricketts

A
  • imparied mineralization of bone
  • failure of osteoid to calcify properly
  • growth reatardation
  • skeletal deformity
  • osteopenia
  • irreg. widened physes
31
Q

risk for rickets

A
  • nutrition
  • prolonged breast feeding
  • ## limited sun