Cohen A R, Wilson J
Department of Neurosurgery, New England Medical Center, Boston, Massachusetts.
Neurosurgery. 1990 Aug;27(2):205-7. doi: 10.1097/00006123-199008000-00005.
Compression of the cerebral peduncle against the tentorial incisura contralateral to a supratentorial mass, the so-called Kernohan's notch, can be a cause of false localizing motor signs. The authors present a case of Kernohan's notch secondary to a traumatic extradural hematoma. The patient developed an oculomotor palsy and a dense motor deficit ipsilateral to the extra-axial hematoma. Magnetic resonance imaging in the postoperative period clearly showed the midbrain lesion. The motor deficit and 3rd nerve palsy subsequently resolved.
大脑脚向幕上肿块对侧的小脑幕切迹受压，即所谓的克诺汉切迹，可能是假定位运动体征的一个原因。作者报告了一例继发于创伤性硬膜外血肿的克诺汉切迹病例。患者出现了动眼神经麻痹以及与轴外血肿同侧的严重运动功能缺损。术后磁共振成像清楚地显示了中脑病变。运动功能缺损和动眼神经麻痹随后得到缓解。
