Mod 2 - Nervous System Pathologies Overview

Aug 11, 2024

Clinical Conditions and Pathologies of the Nervous System

Overview

  • Discussion of central and peripheral nervous system pathologies
  • Different pathologies for CNS and PNS

Central Nervous System (CNS) Pathologies

Congenital Conditions

  • Spinal Bifida: Vertebrae fail to close, CSF leaks out, affects levels below, may require surgical intervention
  • Hydrocephalus: Excess CSF in the brain, enlarged ventricles, affects brain functions

Spinal Cord Injuries

  • Types of Damage: External damage affecting levels below
  • Severity: Complete (loss of sensory/motor function) or incomplete (some preserved functions)
  • Evaluation: Necessary to determine extent of damage

Degenerative Diseases

  • Amyotrophic Lateral Sclerosis (ALS): Progressive motor neuron disease
  • Multiple Sclerosis (MS): Myelin deterioration, progressive in nature

Peripheral Nervous System (PNS) Pathologies

Classification of Nerve Injuries

  • Neuropraxia: Nerve gently stretched/compressed, temporary sensory symptoms
  • Axonotmesis: Damage to the axon, symptoms depend on severity
  • Neurotmesis: Nerve is dead, no transmission of information
  • Recovery: Possible for neuropraxia and sometimes axonotmesis; neurotmesis prognosis is poor
  • Symptoms Progression: Sensory symptoms leading to motor weakness and complete loss of function

Brachial Plexus Injuries

  • Symptoms: Pain, loss/impaired sensation, motor weakness
  • Causes: Trauma (car accidents, gunshot wounds, childbirth injuries)
  • Evaluation: History, EMG, monitoring range of motion, strength, sensation
  • **Types: **
    • Erb's Palsy: Upper brachial plexus (C5-C8), affects shoulder and elbow
    • Klumpke's Palsy: Lower brachial plexus (C7-T1), affects wrist and hand
  • Rehabilitation: Maintaining passive range of motion, proper positioning, functional impairment management, patient education

Specific Conditions

  • Turner Syndrome/Winged Scapula: Injury to the long thoracic nerve, affects serratus anterior muscle, scapular protraction issue
  • Thoracic Outlet Syndrome: Affects nerves, muscles, and arteries in the thoracic outlet; symptoms vary based on affected tissue, requires careful evaluation and treatment based on causative factors