Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan.
Ophthalmic Plast Reconstr Surg. 2012 Jan-Feb;28(1):66-8. doi: 10.1097/IOP.0b013e318239321d.
This study was designed to examine the distance from the posterior lacrimal crest to the posterior margin of the Horner's muscle origin (the PLC-HMO distance), considering their complex anatomical relationship.
Eight macroscopic specimens from 8 Japanese cadavers and 7 microscopic specimens from 7 Japanese cadavers, fixed in 10% buffered formalin, were analyzed. Macroscopically, the PLC-HMO distance was measured at 2 mm superior to the most posterior point of the muscle origin (Group A), directly at the most posterior point (Group B) and 2 mm inferior to the most posterior point (Group C). Microscopically, the PLC-HMO distance was measured in axial sections at 1 mm above the upper eyelid margin (Group 1), 1 mm below the lower eyelid margin (Group 2), and 3 mm below the lower eyelid margin (Group 3).
In the macroscopic study, the average PLC-HMO distance was 2.94, 2.57, and 2.05 mm for Groups A, B and C, respectively. The distance for Group C was significantly smaller than that of Group A (p = 0.006). In the microscopic study, the average PLC-HMO distance was 3.62, 3.74, and 3.14 mm for Groups 1, 2 and 3, respectively (no significant difference).
The PLC-HMO distance was approximately 2-4 mm with some specimens showing a smaller distance inferiorly.
本研究旨在探讨泪后嵴到霍纳肌起点后缘（PLC-HMO 距离）的距离，考虑到它们之间复杂的解剖关系。
对 8 具日本尸体的 8 个大体标本和 7 具日本尸体的 7 个显微镜标本进行了分析。大体上，在肌起点最靠后点上方 2mm 处（A 组）、最靠后点处（B 组）和最靠后点下方 2mm 处（C 组）测量 PLC-HMO 距离。显微镜下，在轴位切片上，在上睑缘上方 1mm（1 组）、下睑缘下方 1mm（2 组）和下睑缘下方 3mm（3 组）处测量 PLC-HMO 距离。
在大体研究中，A、B 和 C 组的 PLC-HMO 平均距离分别为 2.94、2.57 和 2.05mm。C 组的距离明显小于 A 组（p = 0.006）。在显微镜研究中，1、2 和 3 组的 PLC-HMO 平均距离分别为 3.62、3.74 和 3.14mm（无显著差异）。
PLC-HMO 距离约为 2-4mm，有些标本显示下方距离较小。
