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KMID : 1038220200470020160
Archives of Plastic Surgery
2020 Volume.47 No. 2 p.160 ~ p.164
Attachment distribution of pectoral muscle origins identified in dual-plane breast implant insertion
Nam Su-Bong

Song Kyung-Ho
Seo Jung-Yeol
Choi June-Seok
Park Tae-Seo
Lee Jae-Woo
Kim Ju-Hyung
Kim Min-Wook
Kim Hyun-Yeol
Jung Yun-Ju
Kim Choong-Rak
Abstract
Background: Implant-based dual-plane augmentation mammoplasty requires accurate separation of the pectoralis major muscle (PMM) at its origins. The authors identified the PMM origins during breast reconstruction surgery with the goal of providing additional information on subpectoral implant insertion for reconstructive or aesthetic purposes.

Methods: This study was conducted on 67 patients who underwent breast reconstruction surgery at the breast center of our hospital between November 2016 and June 2018. In total, 34 left and 39 right hemithoraces were examined. The left and right hemithoraces were each divided into 15 zones to determine the percentage of PMM attachments in each zone. The distribution of PMM origins in each zone was examined to identify any statistically significant differences.

Results: There were no statistically significant differences in the origins of the PMM between the right and left hemithoraces. The percentage of attachments increased moving from the fourth to the sixth rib and from the lateral to the medial aspect.

Conclusions: The anatomical findings of this study could be used as a reference for accurate dissection of the origins of the PMM for the preparation of the subpectoral pocket for subpectoral implant placement.
KEYWORD
Pectoralis muscle, Anatomy, Breast
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