Superior division of oculomotor nerve coursed between optic nerve and superior rectus muscle after it left zinn ring, its branches entered into the superior rectus muscle and levator muscle.

动眼神经上干出总腱环后行于上直肌与视神经之间，并分支入上直肌和上睑提肌。

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Conclusions Myositis was one of the uncommon clinical subtypes of IOIP, Superior rectus was the most involved muscle, followed by lateral, medial and inferior rectus.

结论肌炎型是特发性眼眶炎性假瘤中较少见的临床亚型之一，以上直肌受累最常见，其次为外直肌、内直肌与下直肌。

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Conclusion The muscle union of lateral, superior and inferior rectus make eyeball move abductively.

结论外直肌与上、下直肌联合术可使眼球有一定的外展功能。

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