Mixed motor weakness

external

• Synonyms

  • Combined upper motor neurone and lower motor neurone lesion
  • Absent ankle jerk and extensor plantars
  • Absent AJ and extensor plantar
  • Absent ankle jerk and upgoing plantar
  • Mixed upper and lower motor neurone weakness

• Causes

  • Friedrich ataxia
  • Motor neurone disease
  • Tabes dorsalis
  • Subacute combined degeneration of spinal cord
  • Conus medullaris syndrome
  • Diabetes mellitus

• Effects

  • Corticospinal tract lesion
  • Lower motor neurone lesion
  • Paraplegia

• Parents

  • Reflex sign