الفهرس 
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Abstract
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SUMMARY AND CONCLUSION
In this essay, I discussed the anatomy, biomechanics,
classifications, diagnostic methods, associated injuries,
different methods of treatment, complications, and prognosis of
cases with unstable pelvic fractures.
Anatomically and biomechanically, the pelvis is formed of
two arches; the posterior arch, that is concerned with pelvic
stability and light bearing and its main component is the
sacroiliac complex, and an anterior arch which acts only as a
strut preventing collapse of the ring. Any unstable pelVic
fracture should affect the posterior light bearing part of the
ring.
I discussed the different classification systems and
accepted the Young’s classification as the most recent and
successful one as it enables the clinicians to determine the
fracture personality, associated injuries, and the best line of
treatment.
•
Clinical examination, plain radiographic projections, CT
scanning, and sometimes MRI are important for diagnosis of type
of fracture, pelvic stability, associated soft tissue and
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ligamentous injuries, and for determination of the fracture
personality and most sUitable method of treatment.
Almost two thirds of cases with unstable pelvic fractures
are associated with other fractures and soft tissue injuries.
Urologic injuries are the most frequent associated soft tissue
injuries and occur with fractures of the anterior pelvic ring •
Brain injury is the most serious associated. injury and
statistically its high incidence OCcurs with lateral
compression injury type I and type II.
•
Different methods of·. treatment Ire discussed with
advantages and disadvantages of each method.
I concluded that the non-conservative methods are the best
for unstable pelVic fractures as they allow early ambulation,
short hospital stay, and better local and systemic prognosis.
External fixation is a very good line of treatment as I dealing
with the anterior ring, but as regarding the posterior ring, I
found that the external fixation did not provide enough
compression, therefore open reduction with internal fixation of
the posterior ring plus external skeletal fixation of the
anterior ring is the best line of treatment of these cases.
•
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The prognosis of cases depend upon the personality of
fracture, associated injuries, and the skills of treating
personnels. Malunion and nonunion are the most common local
complications and should be prevented by perfect anatomical
reduction and stable fixation. Th~y are associated with pain
especially on light bearing, limping, clinical instability and
deformit v .
•