In general, involuntary movements after stroke are due to a disturbance in the unilateral cortico-basal ganglia loop and appear contralateral to stroke lesions. Crossed involuntary movements after unilateral stroke are very rare. We observed a case of crossed involuntary movements in the left upper limb and right lower limb after a right thalamic hemorrhage expanded to the right subthalamic nucleus. We considered a possible three-step theory as the basis of crossed choreoathetosis. This case informs our better understanding of the cortico-basal ganglia loop and involuntary movements after stroke.

中文翻译：

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单侧丘脑出血所致交叉型舞蹈手足徐动症

一般来说，中风后的不自主运动是由于单侧皮质-基底神经节环的紊乱引起的，并且出现在中风病变的对侧。单侧中风后交叉的不自主运动非常罕见。我们观察到一例右丘脑出血扩大到右丘脑下核后左上肢和右下肢不自主运动交叉的病例。我们考虑了一个可能的三步理论作为交叉舞蹈手足徐动症的基础。这个案例让我们更好地了解中风后的皮质基底节环和不自主运动。