INVOLVEMENT OF CORTICAL BONE IN OSTEO

Question 1

name this resorptive envelope of cortical bone?

surface
vascular membrane covering inner cortex and bony trabeculae

pattern
scalloping of inner cortex
intermedullary canal widens

Answer 1

endosteal envelope

Question 2

name this resorptive envelope of cortical bone?

surface
surfaces within cortical bone (haversian and volkmann’s canals)

pattern
longitudinal striations

Answer 2

intracortical envelope

Question 3

name this resorptive envelope of cortical bone?

surface
subperiosteal resorption (rapid turnover)

pattern
irregularity/poor definition of the outer cortical surface

Answer 3

periosteal envelope