Clonus & Ankle clonus ( A qucik Guide ) Clonus is a series of involuntary, rhythmic, muscular contractions and relaxations. Ankle clonus is commonly tested to assess upper motor neuron lesions. How to Elicit: Patient Position: Supine Examiner’s Technique: 1. Support the leg under the knee to keep the muscle relaxed. 2. Dorsiflex the ankle briskly and maintain pressure. 3. Observe for rhythmic oscillations of the foot. Types of Clonus: .Sustained Clonus: Continuous rhythmic contractions while dor
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Clonus & Ankle clonus ( A qucik Guide ) Clonus is a series of involuntary, rhythmic, muscular contractions and relaxations. Ankle clonus is commonly tested to assess upper motor neuron lesions. How to Elicit: Patient Position: Supine Examiner’s Technique: 1. Support the leg under the knee to keep the muscle relaxed. 2. Dorsiflex the ankle briskly and maintain pressure. 3. Observe for rhythmic oscillations of the foot. Types of Clonus: .Sustained Clonus: Continuous rhythmic contractions while dor
10.5K viewsMay 5, 2025
FacebookDr. Arshad Mehmood - Child Specialist
Clonus is involuntary and rhythmic muscle contractions caused by a permanent lesion in descending motor neurons. Clonus may be found at the ankle, patella, triceps surae, wrist, jaw, biceps brachii. | Dr. Amr Arafa psychiatrist
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Clonus is involuntary and rhythmic muscle contractions caused by a permanent lesion in descending motor neurons. Clonus may be found at the ankle, patella, triceps surae, wrist, jaw, biceps brachii. | Dr. Amr Arafa psychiatrist
2.7K viewsJul 18, 2015
FacebookDr. Amr Arafa psychiatrist
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Dr. Neuro on Instagram: "Clonus is a neurological sign that indicates hyperexcitability of the stretch reflexes, usually associated with an upper motor neuron (UMN) lesion. Key Points: Definition: Clonus is a series of involuntary, rhythmic, muscular contractions and relaxations, often triggered by sudden stretching of a muscle. Mechanism: It results from loss of descending inhibitory control from the brain to the spinal cord, leading to overactive stretch reflexes. Common Sites: Ankle (most com
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