- Discussion:
- classified pelvic ring injuries simply according to site of injury;
- anterior disruption can occur thru either pubic symphysis or pubic rami;
- injury may be through the ilium, the
SI joint, or the sacrum;
- it can involve frx-dislocation of
SI joint, which commonly involves frx
thru most posterior portion of iliac wing that crosses joint;
- frx line leaves a portion of ilium in its nl position, articulating w/
upper portion of the
SI joint;
- more anterior portion of the ilium dislocates from lower
SI joint;
- acetabular fracture is another possible site of pelvic ring disruption;
-
Classification includes ten fracture types subdivided by 5 simple frx:
-
posterior wall;
-
Posterior Column;
-
Anterior wall
-
anterior column;
-
Transverse frx;
- combined frx types include combined
posterior wall & post column
frx, or
posterior wall and
Transverse frx as well as several more
complex patterns;
-
T-shaped fracture combines a transverse component & vertical
component that separates the lower ischiopubic segment into
the anterior and posterior columns.
- second type combines anterior and posterior hemitransverse frx,
w/
anterior column or
Anterior wall predominating
in displacement;
- low and usually minimally displaced posterior hemitransverse
component is present;
- in both column frx, all segments of the articular surface are
detached from the ilium;
