Lower Motor Neurone Testing

• Lower Motor Neurone Testing - Dermatomes:

  • A dermatomal distribution of altered sensation or pain - an area of skin supplied by a spinal nerve
  • Assess with cotton wool – Different ways of performing, need to be systematic
  • If changes found you will need to assess further i.e. sharp/blunt, hot/cold
  • Need to have knowledge of peripheral nerve distribution to be able to differentiate
• Lower Motor Neurone Testing - Dermatomes:

  • Need to have knowledge of peripheral nerve distribution to be able to differentiate with a nerve root

  
• Lower Motor Neurone Testing - Myotome:

  • A myotomal pattern of muscle weakness a muscle or muscle group supplied by a spinal nerve
  • Resist and hold each movement for several seconds. Look for strength differences and strength endurance in some subtle cases
• Lower Motor Neurone Testing - Myotome:

  • L2 – Hip Flexion
  • L3 – Knee Extension
  • L4 – Dorsiflexion
  • L5 – Hallux Extension
  • S1 – Ankle Plantar flexion, eversion & Hip extension
  • S2 – Knee Flexion