MANUAL PHYSIOLOGY PRACTICAL - Repository:The Medical ...

FM/UOJ
2.4. Triceps jerk:
Flex the elbow and allow the forearm to rest on the chest of the patient.
Strike the triceps tendon just above the olecranon.
List the muscles and the spinal segments involved:
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2.5. Supinator jerk:
Allow the forearm to rest on the chest of the patient in semipronation. Strike
the styloid process of the radius.
List the muscles and the spinal segments involved:
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2.6. Jaw jerk:
Ask the patient to open the mouth slightly. Place your index finger firmly on
the chin and tap on the finger as in percussion.
List the muscles and the spinal segments involved:
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Clonus:
Clonus is regular oscillations of contraction and relaxation. It is generally elicited
in the ankle and some times in the knee. Sustained clonus occurs in upper motor neuron
lesions. Unsustained clonus may occur in healthy persons who are tense or anxious.
Flex the ankle and support the leg with one hand. Dorsiflex the foot suddenly with
the other hand and hold it dorsiflexed.
List the muscles and the spinal segments involved:
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Neurology
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