Hypertonicity (spasticity and rigidity) will have a profound effect on movement permutations, balance, co-ordination and precision and may be clearly seen in any general functional test. Attempts are being made to measure and quantify hypertonicity and particularly the spastic variety. However, success in this field is hampered by the fact that spasticity is very variable phenomenon and will be affected by any or all of the following factors: External stimuli : Noise, discomfort and activity around the patient will increase muscle tone. Condition of bladder and digestive organs: Discomfort and distension will incline towards increased flexor tone.
Environmental temperature: Chilling increase tone. State of general health: If the patient feels generally unwell and restless the tone may be increased. Emotional state of fear, anxiety, apprehension: These give rise to an increase in tone.…