A 25 year old man presents with sudden, large flinking movement at his arm and leg. MRI reveals a lesion in the right subthalamic nucleus. What is the name of this movement disorder?
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الإجابة والشرح
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الإجابة: A. Ballism.
Sudden, large-amplitude flinging movements of the proximal limbs are ballism (hemiballismus), classically from a lesion (infarct or haemorrhage) of the contralateral subthalamic nucleus. Chorea is caudate-related (quick, dance-like), and athetosis (slow, writhing, distal) is globus pallidus-related.
ليش كل خيار صح أو غلط
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A
ليش صح
A lesion of the subthalamic nucleus causes hemiballismus: a sudden contralateral limb flinging movement, usually of the proximal extremity.
✓ Basics of Neurology-Ali Rawas.pdf · p. 95 -
B
ليش غلط
Chorea is related to the caudate nucleus: quick, jerky, dance-like non-repetitive movements, not a flinging movement from a subthalamic lesion.
✓ Basics of Neurology-Ali Rawas.pdf · p. 95 -
C
ليش غلط
Athetosis is related to the globus pallidus: slow, sinuous, writhing movements of the distal limb segments, not the sudden large flinging movement of a subthalamic lesion.
✓ Basics of Neurology-Ali Rawas.pdf · p. 95 -
D
ليش غلط
Dystonia is a sustained or intermittent muscle contraction causing twisting postures, not a sudden large flinging movement.
✓ Movement disorder.pdf · p. 2
- المصدر
- Basics of Neurology-Ali Rawas.pdf · p. 95
Movment disorder (1).pdf · p. 5 - المحاضرة
- Movement Disorders · Neurology · Module C
- ظهر في
- MED42 ♀ EOM C