Authors
Gkionoul Nteli Chatzioglou, Özcan Gayretli, Kemal Turgay Özbilen, Vildan Önal, Osman Coşkun, Ayşin Kale
Published in
Surgical and radiologic anatomy : SRA. Volume 47. Issue 1. Pages 201. Sep 10, 2025. Epub Sep 10, 2025.
Abstract
This study aims to evaluate the morphological features of the levator palpebrae superioris muscle (LPS) and the variations in the distribution of the oculomotor nerve in the muscle.
100 bilateral orbits from 50 cadavers were included in our study. In our study, the medial, lateral, and middle length, width, and thickness of the LPS were measured from 3 different points and recorded. In addition, the number of branches of the oculomotor nerve entering the LPS muscle was calculated.
The medial, lateral, and middle length of LPS were 34.85 ± 5.30 mm, 34.62 ± 5.67 mm, 35.77 ± 5.31 mm on the right side and 33.66 ± 4.74 mm, 33.81 ± 4.83 mm, 34.54 ± 5.14 mm on the left side, respectively. The width of the muscle was seen to expand from proximally to distally. It was noted that the middle 1/3 thickness of the LPS was the thickest part of the muscle compared to the other parts. A total of 239 oculomotor branches entered the LPS. The middle 1/3 of the LPS was reached by 151 oculomotor nerve branches. It was noted that the largest number of oculomotor nerves entered the middle 1/3 part of LPS.
The morphometric and morphological findings of LPS and branches of the oculomotor nerve may be useful in surgical planning for the LPS and levator aponeurosis and in preventing complications during surgical interventions.
PMID:
40931210
Bibliographic data and abstract were imported from PubMed on 11 Sep 2025.
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