...Blue Box Notes Back Strain, Sprains and Spasms (p. 495) • Warm up and stretching – increase tonus of “core muscles” (anterolateral abdominal wall—transverse abdominis—lumbar stabilization) prevent back strains and sprains • Back sprain – injury to ligamentous or attachment of ligament to bone. o NOT DISLOCATION OR FRACTURE o Excessively strong contractions for extension or rotation of vertebral column • Back strain – degree of stretching or microscopic tearing of muscle fibers o Sports; overly strong contraction o Muscles usually involved with producing movement of lumbar IV joints ▪ ERECTOR SPINAE o Weight not properly balanced on vertebral column o Do NOT use back as lever, crouch and keep back straight ▪ Use muscles of butt and lower limbs • Spasm – sudden involuntary contraction of one or more muscle groups o Protective mech o Attended by cramps, pain, and interference with f(x), producing involuntary movement and distortion Reduced Blood Supply to Brainstem (p. 496) • Winding course of vertrebral arteries through foramina transverasii of the transverse process of the cervical vertebrae and through subocciptal triangle • Problem when arteriosclerosis (hardening of arteries) – reduces blood flow • Symptoms – prolonged turning of the head such as trying to back up in car causes lightheadedness, dizziness, and other symptoms...
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