Size adjustment suture technique for lymphaticovenular anastomosis

Satoshi Onoda; Kahori Tsukura; Toshihiko Satake

doi:10.2340/jphs.v58.18384

Authors

Satoshi Onoda Department of Plastic and Reconstructive, Aesthetic Surgery, Toyama University Hospital, Toyama, Japan
Kahori Tsukura Department of Plastic and Reconstructive, Aesthetic Surgery, Toyama University Hospital, Toyama, Japan
Toshihiko Satake Department of Plastic and Reconstructive, Aesthetic Surgery, Toyama University Hospital, Toyama, Japan

DOI:

https://doi.org/10.2340/jphs.v58.18384

Keywords:

Lymphaticovenous anastomosis, super-microsurgery, caliber difference, long-term patency, obstruction

Abstract

In this report, we describe a super microsurgical technique that enables rapid and accurate anastomosis while adjusting for caliber differences when anastomosing a small-caliber lymphatic vessel and a vein with a larger caliber, which is frequently encountered in surgeries such as lymphaticovenous anastomosis (LVA).

The suture size adjustment technique was performed in 30 anastomoses of lymphatic vessels and veins, whose diameter of lymph duct was at least two times smaller than that of the vein. The type of lymphedema, caliber of lymphatic vessels and veins anastomosed, caliber ratio, vein wall thickness, modified caliber ratio after vein wall thickness subtracted, presence of additional anastomosis, and anastomosis time were examined. On average, the lymphatic vessels had a diameter of 0.61 mm, while the veins were 1.43 mm in diameter. The mean caliber ratio of vein to lymphatic vessel was 2.3, while the modified caliber ratio of vein-to-lymphatic vessel was 1.5 on average. The average venous wall thickness was 0.51. The average anastomosis time was 9.1 min and no additional anastomosis due to leakage was necessary in any case.

We successfully performed an anastomosis of lymphatic vessels and veins with different calibers, which can maintain long-term patency while adjusting the caliber difference and suppressing leakage at the anastomosis site. Finally, the caliber of the vein is commonly larger than that of the lymphatic vessel to be anastomosed in many cases of LVA surgery, indicating that the proposed anastomosis method could be of therapeutic use in many cases.

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