Microsurgical anatomy and clinical significance of liliequist and premesencephalic membranes
SONG Hai-Min, ZHANG Shen-Yu, JIANG Qiu-Hua, FAN Dun, QI Song-Chao
Chinese Journal of Clinical Anatomy ›› 2012, Vol. 30 ›› Issue (6) : 612-616.
Microsurgical anatomy and clinical significance of liliequist and premesencephalic membranes
Objective To describe microsurgical anatomy characteristics and clinical significance of liliequist membrane and premesencephalic membranes and their relationship. Methods 10 formalin-fixed cadaveric head specimens were dissected to observe features of liliequist membrane and premesencephalic membranes, as well their anatomic relationship. Results The liliequist membrane was composed of diencephalic and mesencephlic membranes. Anterior attachment of mesencephlic membrane presented 2 styles. Lateral border of mesencephlic membrane attached to the anterior of premesencephalic membrane. The perimesencephalic membrane originated from the reflexion of the arachnoidal membrane covered the lower surface of the temporo-occipital lobe and the upper surface of the cerebellum, which could be divided into anterior, medial and posterior parts. Lateral border of mesencephlic part of liliequist membranes connected with the anterior of premesencephalic membrane. Conclusions The structure, variation, relationship and clinical significance of liliequist membranes and premesencephalic membranes are explored and analyzed in this study.
Arachnoid membrane / Premesencephalic membrane / Microsurgery / Cistern / Neurosurgery
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