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  • nerves
  • As the forceful uterine contractions continue, we see the infant's shoulder being trapped beneath the mother's pelvic bone (pubic symphysis) causing the nerves of the brachial plexus (highlighted for visibility) to be stretched and injured. (smartimagebase.com)
  • muscles
  • Knowledge of the intrinsic anatomic structures and their relationship to adjacent muscles, vessels, and osseous landmarks is crucial for correct identification of normal plexus components and for the diagnosis of pathologic conditions. (appliedradiology.com)
  • The plexus, depicted in the images below, is responsible for the motor innervation of all of the muscles of the upper extremity, with the exception of the trapezius and levator scapula. (medscape.com)
  • The trunks of the brachial plexus pass between the anterior and middle scalene muscles. (medscape.com)
  • lesion
  • We report the course of a 16-year-old girl who presented with near complete visual loss associated with chiasmal neuritis and a biopsy proven tumefactive demyelinating lesion on magnetic resonance imaging (MRI) in association with a recent immunization against human papilloma virus. (whale.to)
  • triggers
  • Various potential triggers have been reported by brachial neuritis patients in the literature, including recent infection, recent immunization, reaction to a surgical procedure, and many other types of stresses to the body. (spine-health.com)
  • neck
  • A common brachial plexus injury is from a hard landing where the shoulder widely separates from the neck (such as in the case of motorcycle accidents or falling from a tree). (wikipedia.org)
  • A quick or emergency delivery, when the baby must be forcibly pulled out, can result in a brachial plexus injury because the baby's neck is often flexed severely in one direction. (hopkinsmedicine.org)
  • subclavian
  • The subclavian artery travels through the interscalene triangle with the plexus, while the subclavian vein courses anteriorly to the anterior scalene muscle. (appliedradiology.com)
  • anatomy
  • The brachial plexus presents an imaging challenge due to its complex anatomy and close proximity to the lungs and major vessels, where there are often magnetic susceptibility effects. (appliedradiology.com)
  • proximal
  • 14 ] Very proximal lesions in the arm or brachial plexus, even when treated within 3 months following injury, carry a high risk of incurring irreversible muscle atrophy before the regenerating axons can reach the motor end plates. (parjournal.net)