2.
The process of indirect osseous repair is typically a
progression from:
a.
Cartilage callus to hematoma to ossification
b.
Hematoma to cartilage callus to ossification
c. Epithelialization to hematoma to ossification
d.
Cutting cone to woven bone to ossification
Answer B.
Indirect osseous repair
(secondary bone healing) is dependent on the orderly
progression from hematoma to callus to eventual
ossification. Ref: McGlamry’s Comprehensive Textbook
of Foot and Ankle Surgery, Third Edition, Volume 1,
Chapter 4, page 67.
3. True
or False: Direct osseous repair leads to a FASTER rate of
healing than indirect osseous repair.
Answer False. Direct
osseous repair (primary bone healing) is more
consistent and more predictable than indirect
repair, but is not necessarily regarded as faster.
Ref: McGlamry’s Comprehensive Textbook of Foot and
Ankle Surgery, Third Edition, Volume 1, Chapter 4,
page 67.
4. Which of
the following growth factors play a critical role of instigating
and directing bone healing?
a.
Platelet derived growth factor
b.
Macrophage-derived growth factor
c.
Transforming growth factor beta
d. All of
the above
Answer D. Ref:
McGlamry’s Comprehensive Textbook of Foot and Ankle
Surgery, Third Edition, Volume 1, Chapter 4, page
66.
5. Which of
the following Load / Fracture Pattern combinations is
Incorrect?:
LOAD
FRACTURE PATTERN
a. Torsional load
spiral oblique fracture
b. Pure bending
force
transverse fracture
c. Compression force
avulsion fracture
d. Combination force
oblique fracture
Answer C. Each of the
fracture patterns matches to its causative load
except for the selected pair C. A compression force
on a long bone will produce an impaction fracture
within metaphyseal or epiphyseal regions. Ref:
McGlamry’s Comprehensive Textbook of Foot and Ankle
Surgery, Third Edition, Volume 1, Chapter 4, page
66.
