ArticleSurgical and radiologic anatomy : SRA2024
Neurovascular anatomy of the platysma muscle for blepharoptosis repair: a cadaveric study.
Article in Surgical and radiologic anatomy : SRA, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThis study aimed to define a new surgical method using a neurotized platysma free flap to provide dynamic reanimation, enhanced functional recovery, and low morbidity for blepharoptosis repair.
methodsTen hemifaces and neck halves of five formalin-fixed cadavers were included in the study. The origin of the neurovascular structures of the pedicle was identified at the submandibular triangle. A 5 × 3 cm platysma flap was dissected. For the recipient side, the main donor vascular structures were observed at the frontal part of the temporal region. The diameters of the donor structures were measured with a digital Vernier caliper. The statistical analysis of the study was performed with Jamovi statistical software version 2.3.36. P < 0.05 was accepted as a statistically significant value.
resultsAt the donor region, the pedicle included branches of the cervical branch of the facial nerve and the facial artery in all specimens. However, the venous graft pedicle origin could be either the facial vein or the lingual vein. At the recipient region, the mean diameters of the most anterior nerves, arteries, and veins were 1, 2.03, and 2.37 mm respectively. In a side comparison of pedicle variables, only pedicle artery diameter and lateral palpebral commissure-anterior superior point of auricula distance had statistically significant differences between hemifaces.
conclusionA 5 × 3 cm size platysma flap located in the submandibular trigone would be a good choice for functional blepharoptosis surgery. The thin structure and the appropriate neurovascular pedicle structure should enable performing a successful flap transfer.
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