537: Peds > Developmental Mechanics > Flashcards

Developmental Mechanics Flashcards

(50 cards)

Study These Flashcards
1
Q

Define periosteum

A

Vascular CT that covers bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When does ossification center in diaphysis begin

A

8th fetal week

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Epiphyseal plate fxn

A

Allows bone growth until bone structure attained

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is process of flexor drift

A

Convex side - osteoclast activity
Concave side - osteoblast activity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

2 factors that stimulate bone growth
Which provides greater force?

A

WB and mus pull

Mus pull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

7 types of strain/stress

A
  • unload
  • tension
  • compress
  • torsion
  • shear
  • flexure
  • combo
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

When is ossification over

A

25 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

When does growth plate close for M and W

A

M - 18
W - 16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is oppositional growth

A

Thickness and diameter grow d/t mus act or wt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Hip angle of newborns

A

145-160

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Hip angle of adults

A

120

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is anteversion

A

Position of head in acetabulum; heat ant -> hip ER

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How much adult anteversion?

A

10-20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How much newborn anteversion?

A

40-60

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is antetorsion

A

Fem head rot forward in transverse plane relative to fem condyles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does persistent fem antetorsion cause

A

Hip IR and toe in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How much antetorsion do newborns have

A

30-40

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

4 factors that make antetorsion decrease

A
  • hip ER
  • increased hip ext
  • WB
  • growth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

2 factors that decrease anteversion

A
  • decreased hip flex contracture
  • decreased capsular tightness
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

1 cause of abnormal fem torsion? 1 solution?

A
  • hip flexor contracture w/ ant pelvic tilt
  • earlier hip ext, correction of torsion**
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

W sitting is a form of what? Describe leg pos

Study These Flashcards
A

Antetorsion

Hip flex and IR, tibial lat rot

22
Q

What is the trochanteric prominence angle test? Purpose?

Study These Flashcards
A

Craig’s test or Ryder

Assess anteversion

23
Q

How to perform Craig’s test

Study These Flashcards
A

-prone knee 90
-palp max troch prominence
-measure angle between tibia shaft and line perpendicular to table

24
Q

Norm range for Craig’s test

25
Anteversion and retro version for Craig’s test
Ante: >15 Retro: < 8
26
3 interventions that promote fem alignment
- promote hip ext - promote iliopsoas length - active ER
27
What is the most common newborn abnormality
Developmental dysplasia of the hip (DDH)
28
2 causes of developmental dysplasia of hip
- fam hx - breech pos in womb and during delivery
29
3 clinical signs of develop dysplasia of hip
- decreased hip ABD (< 60) - leg length discrepancy - asym thigh and gluteal folds
30
4 tx for develop dysplasia of the hip
- palvik harness - hip ABD braces - Von Rosen splint - surgery
31
What is the Barlow test
Disloc joint (clunk of exit as fem disloc from ace)
32
What is Ortolani test
Reduce jt (clunk of entry as disloc fem back in ace)
33
4 clinical screening and dx for developmental dysplasia of the hip
- Barlow - ortolani - US 1st 3 m’s - xray >5 m’s
34
How much genu varum for a newborn
15
35
When does child need orthopedic specialist
Genu varum between 2-6 years
36
What does tibia pos depend on
Fem, ft and ankle pos in WB
37
Abnorm range for internal tib rot
>10-20
38
What is thigh ft angle
Measures tib torsion
39
How to thigh ft angle
Prone knee 90 Measure angle bisect thigh and 3rd toe
40
What pos is newborn ft in
DF and slightly inv foreft
41
When does medial long arch form
2-6 years
42
6 common developmental issues with pronated ft
- decreased or hypotonic child - lig lax - lat hip rot contracture - lack DF - persistent fem ant - juvenile idiopathic arthritis
43
When does fat pad recede in feet
2-3 years
44
What is slipped capital fem epiphysis
Displacement fem head relative to fem neck at growth plate
45
age range for slipped capital fem epiphysis
10-15
46
What is legg-calve perthes
Avasc capital fem epiphysis -> Abnorm bone growth
47
Age range for legg-calve perthes
4-8 years
48
What directions are limited in legg-calve perthes
ABD and IR
49
Club ft position
Cavus, ADD, varus, equines
50
3 tx for club ft
- ponsetti cast - percutaneous tenotomy if not correct in 6 wks - AT lengthen, Dennis Barr or Donna until 3-4 years
537: Peds
flashcards
Decks in class (21)
# Cards
Brainscape helps you reach your goals faster, through stronger study habits.
© 2026 Bold Learning Solutions. Terms and Conditions