Eventually the joints become fixed and can be released only by surgery. The muscle tone changes randomly and without obvious reasons leading to irregular, abnormal movements. Hypertonic Increased muscle tone. Hypotonic Decreased muscle tone. The muscle's readiness to contract or the degree of resistance to movement in a limb or group of muscles.
Muscle tone can be normal, increased or decreased.
Rigid Similar to spastic but no 'give' at any point in the range of movement. Tremor Regular repetitive movements which may be worse either at rest or on attempted movement, hence the latter is an 'intention tremor'. Diplegia Paralysis in corresponding limbs. Hemiplegia Paralysis or weakness of one side of the body. Monoplegia Weakness in one limb.