Stidham BD, Porter JR, Stager DR, Weakley DR
Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, United States of America
Strabismus. 1998 Mar;6(1):9-17.
To delineate the nature of the capsule of the nerve to the inferior oblique muscle along its intra- and extracranial course and to compare it to the capsules of the nerves to the other extraocular muscles; also to determine any change in the nature of the capsule from birth to adulthood. METHODS: Light and electron microscopy were performed on fresh autopsy specimens from a neonatal and a 26-year-old cadaver. RESULTS: The collagenous capsule of the nerve to the inferior oblique is present throughout its entire course, becoming more complex anteriorly as the myoneural junction is approached. A similar capsule surrounds the nerves to the other extraocular muscles. This structure is well developed by birth. CONCLUSIONS: The mechanical inelasticity of the nerve to the inferior oblique muscle has been shown to influence postoperative ocular alignment. The nerve is surrounded by a collagenous and fibrous capsule, which is well developed along the entire course of the nerve and is present from birth. The nerves to the other extraocular muscles have a similar capsule that likely conveys similar mechanical properties to those nerves and that may affect ocular alignment following surgical procedures on these muscles as well. These findings expand our current understanding of the nerves to the extraocular muscles and may be useful for improving treatments.
描述支配下斜肌的神经在颅内和颅外走行过程中神经鞘膜的性质，并将其与支配其他眼外肌的神经鞘膜进行比较；同时确定从出生到成年神经鞘膜性质的任何变化。方法：对取自一名新生儿和一名26岁尸体的新鲜尸检标本进行光镜和电镜检查。结果：支配下斜肌的神经的胶原性鞘膜在其整个走行过程中均存在，在接近肌神经连接处时前部变得更加复杂。类似的鞘膜围绕着支配其他眼外肌的神经。这种结构在出生时就发育良好。结论：已证明支配下斜肌的神经的机械无弹性会影响术后眼位。该神经被胶原性和纤维性鞘膜包围，该鞘膜在神经的整个走行过程中发育良好且出生时就存在。支配其他眼外肌的神经有类似的鞘膜，可能赋予这些神经类似的机械特性，并且在对这些肌肉进行手术操作后也可能影响眼位。这些发现扩展了我们目前对眼外肌神经的认识，可能有助于改进治疗方法。
