Pediatric MSK

Question 1

two masses of mesoderm cells thatform along the neural tube;

Answer 1

somites

Question 2

somites differentiate into: (3)

Answer 2

dermis
skeletal muscle
vertebrae

Question 3

creates the vertebral column, starts endochondral ossification

Answer 3

sclerotome

Question 4

creates the dermis and muscle

Answer 4

dermomyotome

Question 5

all bones start as cartilage at week 6, known as?

Answer 5

chondrification

Question 6

10 year bone primary ossification center

Answer 6

diaphysis

Question 7

10 year bone secondary ossification center

Answer 7

epiphysis

Question 8

10 year bone chondral ends of diaphysis

Answer 8

metaphysis

Question 9

outgrowth of bone on the epiphysisdue to abnormal stress

Answer 9

apophysis

Question 10

due to irregular stress on epiphysis

Answer 10

avulsion fx

Question 11

4 places avulsion fx are common

Answer 11

ASIS
patella
hamstring
achilles

Question 12

name how to know SALTER classification of fx’s through types

Answer 12

S- straight acorss
A- above
L- lower
T- two and through
ER- crush

Type I through type V

Question 13

Inherited disorder of connective tissue

• Defect in collagen I

Answer 13

osteogenesis imperfecta

Question 14

Surgery: 
Hamstring or 
patellar graft 
growth plate 
issues:  
Through it: end 
of growth, 6-9 
mo to return to 
sport 
Around it- 
epiphyseal 
sparing, 9-12 
mo to return to 
sport 

tx for?

Answer 14

ACL

Question 15

Valgus force or
deceleration/hyper
extension injury

patho for?

Answer 15

ACL

Question 16

the middle layer of the

embryo, creates all connective tissues including cartilage, bone, and muscle

Answer 16

mesoderm cells