Dynamic blood flow to the retrograde limb of the internal mammary vein in breast reconstruction with free flap

Usefulness of indocyanine green angiography in the intraoperative evaluation of recipient vessels for microsurgical lower extremity reconstruction in ischemic vasculopathy: Report of three cases

Choosing reliable recipient vessels is crucial for successful free flap reconstruction of lower extremity defects, especially in patients with ischemic vasculopathy. This report describes our experience with the intraoperative use of indocyanine green angiography (ICGA) for selecting recipient vessels in lower extremity free flap reconstruction cases. Three patients with lower extremity defects and ischemic vasculopathy underwent free flap reconstruction. Intraoperatively, the candidate vessels were evaluated using ICGA. In the first case, a 10 × 6 cm defect on the anterior side of the lower third of the leg caused by minor trauma and associated with peripheral arterial occlusive disease was reconstructed using a super-thin anterolateral thigh flap based on one perforator. In the second case, a 12 × 8 cm defect on the posterior side of the right lower leg caused by a dog bite and associated with severe atherosclerosis throughout all three major vessels in the lower leg was reconstructed using a muscle-sparing latissimus dorsi myocutaneous flap. In the third case, a 13.5 × 5.5 cm defect on the right lateral malleolar region, where the peroneus longus tendon was exposed due to Buerger's disease, was reconstructed using a one perforator-based super-thin anterolateral thigh flap. In all cases, ICGA was used to evaluate the functionality of the candidate recipient vessels. In two cases, the candidate vessels showed acceptable blood flow, and the operations proceeded as planned. In the third case, the planned vessels of posterior tibial vessels were not identified to have sufficient blood flow, and one of their branches showing enhancement in ICGA was selected and used as a recipient vessel. All flaps survived completely. No adverse events occurred during the follow-up period of postoperative 3 months. Our results suggest that ICGA may be a valuable diagnostic tool for evaluating the quality of candidate recipient vessels in cases where their functionality cannot be guaranteed with conventional imaging modalities.

Double Free Transverse Upper Gracilis Flap Breast Reconstruction: Advantages of Using LD Flap as a Salvage Solution

The lower abdominal tissue is still the most common donor site used for free autologous breast reconstruction. If this site is not available, multiple secondary choices exist. The transverse upper gracilis flap is a valuable choice and it can be used alone or in combination with other flaps. We present a case of a 49-year-old patient who underwent delayed unilateral breast reconstruction by using a double transverse upper gracilis flap. Due to venous thrombosis, the flap inserted in the lower pole was lost. We managed the complication tailoring a latissimus dorsi flap to close the defect. We reported the advantages of the latissimus dorsi flap as a rescue solution and its superior aesthetic result in this particular case. Breast reconstruction with transverse upper gracilis flap in addition to the latissimus dorsi flap allowed us to obtain an adequate breast volume avoiding the use of breast implants as desired by the patient. We thought that the double free transverse upper gracilis flap for delayed, or immediate unilateral reconstruction of small to moderate breast could be a valuable option to avoid the use of implants and when abdominal tissue is not available. However, it should be taken into consideration the shortness of the transverse upper gracilis pedicle, the necessity to perform a retrograde flow anastomosis at the level of the internal mammary, and the discrepancy of skin color tones with the receiving site. The latissimus dorsi flap was an excellent rescue solution and put in evidence the aesthetic superiority of this flap compared to the transverse upper gracilis flap.

Internal Mammary Vein Valves: A Histological Study

It is widely accepted that the internal mammary vein (IMV) is valveless. However, few anatomical studies are available on the presence or absence of IMV valves. To test the hypothesis that the IMV is valveless, we performed microscopic histological examination of the IMV. IMV samples were collected from 10 human fresh frozen cadavers. For a control, the small saphenous vein (SSV) was obtained. Histological stains were performed. Microscopic examination showed that a venous valve was found in 8 of 20 IMVs. The structure of the valve leaflet consisted of two parts. There was a “thick part” located near the wall of the vein that consisted of smooth muscle cells and fibers. There was also a “thin part” located near the center of the venous lumen that lacked smooth muscle cells. The size of the thick part of the IMV valve was smaller than the SSV valve, whereas there was no difference in the size of the thin part between the IMV and SSV. IMV valves exist. Our results that an IMV valve was present in less than half of IMVs and there was a small-sized valve leaflet suggest that the IMV valve may be rudimentary.

Near-infrared fluorescence image-guidance in plastic surgery: A systematic review

Background

Near-infrared fluorescence (NIRF) imaging technique, after administration of contrast agents with fluorescent characteristics in the near-infrared (700–900 nm) range, is considered to possess great potential for the future of plastic surgery, given its capacity for perioperative, real-time anatomical guidance and identification. This study aimed to provide a comprehensive literature review concerning current and potential future applications of NIRF imaging in plastic surgery, thereby guiding future research.

Methods

A systematic literature search was performed in databases of Cochrane Library CENTRAL, MEDLINE, and EMBASE (last search Oct 2017) regarding NIRF imaging in plastic surgery. Identified articles were screened and checked for eligibility by two authors independently.

Results

Forty-eight selected studies included 1166 animal/human subjects in total. NIRF imaging was described for a variety of (pre)clinical applications in plastic surgery. Thirty-two articles used NIRF angiography, i.e., vascular imaging after intravenous dye administration. Ten articles reported on NIRF lymphography after subcutaneous dye administration. Although currently most applied, general protocols for dosage and timing of dye administration for NIRF angiography and lymphography are still lacking. Three articles applied NIRF to detect nerve injury, and another three studies described other novel applications in plastic surgery.

Conclusions

Future standard implementation of novel intraoperative optical techniques, such as NIRF imaging, could significantly contribute to perioperative anatomy guidance and facilitate critical decision-making in plastic surgical procedures. Further investigation (i.e., large multicenter randomized controlled trials) is mandatory to establish the true value of this innovative surgical imaging technique in standard clinical practice and to aid in forming consensus on protocols for general use.

Level of Evidence: Not ratable

Anastomosis of the Superficial Inferior Epigastric Vein to the Internal Mammary Vein to Augment Deep Inferior Artery Perforator Flaps

Use of the retrograde limb of the internal mammary vein has been described previously as a lifeboat for venous congestion but not prophylactically. Maximizing the length of the deep inferior artery perforator (DIEP) flap pedicle, identifying and dissecting the superficial inferior epigastric vein proximally in every patient, and taking advantage of the retrograde internal mammary vein are all technical details that facilitate the additional venous anastomosis and flap inset. Performing a second venous anastomosis routinely using the superficial inferior epigastric vein to the retrograde internal mammary vein helps with flap inset.

Breast reconstruction using free medial circumflex femoral artery perforator flaps: intraoperative anatomic study and clinical results [corrected]

BACKGROUND

A free fascioadipocutaneous flap obtained from the medial thigh is suitable for breast reconstruction in Asian women with a small-to-moderate breast size. In this region, both a medial circumflex femoral artery perforator flap (MCFAp flap) and a posterior medial thigh perforator flap (PMTp flap) are options, based on perforators from the deep femoral vessels. Here, we evaluated the anatomic basis of the medial circumflex femoral artery (MCFA) perforators from the medial circumflex femoral vessels.

METHODS

Between July 2010 and June 2014, 53 patients (55 flaps) underwent breast reconstruction using a fascioadipocutaneous flap from the medial thigh. MCFA perforators larger than or equal to 0.5 mm in this region were investigated. The following parameters were recorded intraoperatively: number of perforators, perforator locations, distance of the perforating point from the proximal thigh crease and anterior border of the gracilis muscle.

RESULTS

The total number of perforators was 131, with a mean of 2.4. The number of perforators coursing through the gracilis muscle (gracilis perforators) was the largest, followed by septocutaneous perforator coursing between the adductor longus and gracilis muscle. The average perforating point was located 6.5 cm below the proximal thigh crease and 2.2 cm from the anterior border of the gracilis muscle. Of the 102 procedures performed since 2006, 15 flaps were elevated as MCFAp flaps and there was no major complication.

CONCLUSIONS

In some cases, MCFA perforators are dominant in this region compared to PMT perforators. A perforator map can be helpful for identifying adequate MCFA perforators intraoperatively.