What effect will normal gravitational moments tend to have on a weak sacroiliac joint?
What will be an ideal response?
ANS: Although ordinarily the sacroiliac joint ligaments are adequate to their task of preventing rotation
between the ilia and the sacrum, excessive forces across one or both of the sacroiliac joints or
weakening of the ligaments can lead to temporary or permanent ligamentous plasticity. For
example, if the ligaments fail to prevent it, the ilium may actually rotate posteriorly with respect to
the sacrum (a movement caused by the normal forces acting around the joint). This creates
distortion at the pubic symphysis as well, with the pubis on the side of the posteriorly torsioned
ilium sitting high with respect to the adjacent pubis.
You might also like to view...
A young female patient was walking on a 7-foot-high retaining wall when she stumbled and fell. She impacted a concrete sidewalk surface with her left foot and left hand. Your assessment reveals ecchymosis, deformity, and edema to both the left foot and left hand. Based on the concept of injury caused by indirect force, where else should the EMT look for injury?
A) Left toes B) Left ankle C) Left hip D) Left fingers
Which of the following is the most common urinary parasite?
A. Beta-Hemolytic streptococci B. Escherichia coli C. Staphylococcus aureus D. Streptococcus pneumoniae E. Trichomoniasis vaginalis