Module 10 - Skeletal Dysplasia Flashcards
1
Q
Endochondral ossification begins at _____ weeks LMP
A
10
2
Q
Femur growth is ____mm/week until _____ weeks
A
3, 27
3
Q
- Malformation
- Deformation
- Disruption
A
Errors of morphogenesis
4
Q
absence of the prox portion of the extremity, hands/feet attached to trunk of body
A
Phocomelia
5
Q
- severe micromelia
- decreased thoracic circumference
A
When dysplasias are considered lethal
6
Q
Most common skeletal dysplasia
A
Thanatophoric dysplasia (TD)
7
Q
Presents as decreased mineralization (echopenic bones)
A
Achondrogenesis
8
Q
First bones to ossify
A
Mandible and maxilla
9
Q
Proximal portion of limb shortened
A
Rhizomelia
10
Q
Middle portion of limb shortened
A
Mesomelia
11
Q
All portions of the limb shortened
A
Micromelia
12
Q
Acromelia
A
Distal portion of limb shortened
13
Q
Clinodactyly
A
Missing middle phalanx
14
Q
Syndactyly
A
Fused finger bones
15
Q
Polydactyly
A
Extra digits
