The pelvic support prevents
hyperflexion of the spinal cord which can irritate or damage surgical, or painful sites.
The violent forces associated with sudden impact can cause hyperextension and
hyperflexion of the soft tissues, i.e., sprains, strains, whiplash and similar injuries.
Using a little more trunk extension is okay as long as you are not compromising your postural position (i.e. don't go into lumbar hyperextension or
hyperflexion).
Other defects due to captivity and inhumane conditions include animals with loss of limbs or bones, deformed or broken legs from overcrowded wire cages, abscessed feet or
hyperflexion.
Vehicle occupants in car crashes are often thrown forward and backward, which can cause hyperextension (excessive forward movement) and
hyperflexion (excessive backward movement), respectively.
Neck Injuries Can Occur in Low - Speed Crashes as well as High Speed Crashes Neck injuries such as hyperextension /
hyperflexion, myofascial injury, neck sprain, and cervical strain can be caused by many different traumatic events.
Hyperextension and
hyperflexion are the medical terms for what happens to the head and neck at the point of impact during an auto accident.