Superficial circumflex iliac artery perforator flap for tongue reconstruction

Optimizing Flap Measurements for Tongue Reconstruction: Harnessing the Power of the Pythagorean Formula

Head and neck reconstruction, particularly tongue reconstruction, remains a formidable challenge. However, crafting a three-dimensional structure from a basic flap necessitates precise dimensions to avoid excess or insufficiency. At the same time, the tongue also has to be accommodated inside the oral cavity to prevent protrusion or repeated injuries due to tooth bites. This study aims to showcase the practicality of employing Pythagoras's formula in both preoperative and intraoperative settings to the required flap dimensions for partial and hemiglossectomy tongue defects. Between 2020 and 2022, we have undertaken 53 tongue reconstructions to address defects resulting from partial or hemiglossectomies. Among these cases, 51 were managed with free radial artery flaps, while in two we utilized anterolateral thigh flaps for reconstruction. Our study excluded cases involving minor tongue defects amenable to primary closure. By treating the length of the tongue defect as the hypotenuse, Pythagoras's formula is applied to calculate the optimal length and width of a free microvascular flap. The tongue reconstruction is performed, and microvascular anastomosis is carried out in the neck. An addition was made for associated buccal mucosa defects, if any. All flaps survived without any complications like bleeding, wound dehiscence, and partial or complete flap necrosis. Tongue movement was adequate, with good swallowing and good speech. The application of Pythagoras's formula provides a dependable method for determining flap size pre- and intraoperatively in cases of partial or hemiglossectomy tongue defects, leading to favorable functional and aesthetic results.

SCIP flap in head and neck reconstruction after oncologic ablative surgery: a systematic review

BACKGROUND

In the surgical treatment of head and neck locally advanced malignancies, microvascular free flaps represent the most valuable solution to reconstruct the tissue defect after resection of the primary neoplasm. In particular, microvascular free flaps allow to restore the functional and aesthetical features of the head and neck compartments. The superficial circumflex iliac perforator (SCIP) flap represents, as an evolution of the groin flap, a valid alternative to the radial fasciocutaneous free (RFFF) flap or the anterolateral thigh (ALT) flap.

METHODS

This systematic review adhered to the recommendations of the Preferred Reporting Items of Systematic Reviews and Meta-analysis (PRISMA) 2009 guidelines. A computerized MEDLINE search was performed using the PubMed service of the U.S. National Library of Medicine ( www.pubmed.org ) and Scopus database ( www.scopus.com ). Two authors screened the articles, then selected and extracted data on malignancies characteristics, reconstructive techniques, outcomes, and complications.

RESULTS

A total of 25 articles were selected and reviewed among the 39 identified through the search string. Six out of the selected 25 articles were case reports, while the remaining 19 articles were retrospective case series. The whole study population was represented by 174 oncologic patients undergoing ablation of a head and neck tumor and reconstruction with a SCIP flap. The site of reconstruction was the oral cavity in 125 (71.0%) patients, being the tongue the most common subsite in 73 (41.5%) patients, the pharynx in 10 (5.7%) cases, the larynx in 3 (1.7%) and head and neck skin in 36 (20.4%) patients. Only two cases of total flap loss were reported. Partial flap loss or shrinkage requiring minor surgical revisions was observed in 11 patients (6.32%). Primary closure of the donor site was achieved in the whole study population, according to the available data.

CONCLUSIONS

In head and neck postoncological reconstruction, despite the caliber and the length of the pedicle, SCIP flap offers a pliable and thin skin paddle, allowing single-stage resurfacing, medium to large skin paddle, possibility of composite-fashion harvest and a well-concealed donor site.

Repair of multiple hand defects with superficial circumflex iliac artery perforator flap

BACKGROUND

Reconstruction and repair of multiple defects in the hand is a combination of function, sensation and aesthetics. The reconstruction using the superficial circumflex iliac artery perforator flap has become popular, which overcomes the inherent shortcomings of traditional inguinal flaps by preserving the deep fascia. In this report, we present our experience in the design and clinical application of the superficial circumflex iliac artery perforator flap, which we used to repair multiple defects in the hand.

METHODS

From January 2015 to December 2020, 41 patients received free superficial circumflex iliac artery perforator flap to repair multiple hand defects. All flaps were carefully designed according to the hand defect including 21 single and 20 bilobed flaps. The area of ​​the donor area is 2.5 cm × 3.0cm∼8.0 cm × 6.5 cm. We followed up all patients regularly and completed standardized assessments of outcomes based on post-reconstruction hand function and esthetic scores.

RESULTS

41 cases of flaps survived completely.3 cases of vascular crisis was relieved after surgical exploration, 1 case of mild distal necrosis was healed after dressing change, 1 case of pigmentation happened. There were 41 patients, 27 males and 14 females, with an average age of 40.5 years (4 to 59 years old). The defects included 20 cases opisthenars and 21 cases palms. The wounds were irregular, with exposed or damaged tendons, nerves or bones. All flaps were followed for a mean of 10.5 months (3 to 15 months). The functional and esthetic outcomes were satisfactory for all flaps without complications such as hand spasms, adhesions and scar contractures CONCLUSION: The superficial circumflex iliac artery perforator flap's donor site was concealed, relatively stable perforators, easy dissection. Recipient site condition was good and acceptable for the patients. It is a significant choice for multiple hand defects.

Comparison between the radial forearm and superficial circumflex iliac artery perforator free flaps for oral soft tissue reconstruction

The radial forearm free flap (RFFF) is widely used for oral reconstruction. The superficial circumflex iliac artery perforator (SCIP) flap is an increasingly utilized alternative. The cases of 165 patients who received either an RFFF or SCIP flap for oral reconstruction at Chris O'Brien Lifehouse, Sydney were reviewed. The aim was to report on patient, pathology, treatment, and outcome variables and to compare these between the two flap groups. A RFFF was used in 126 patients and a SCIP flap in 39 patients. SCIP flap patients were younger (P < 0.001) and had shorter operative times (P < 0.001), shorter anaesthetic times (P < 0.001), and more frequent recipient site dehiscence (P = 0.005) when compared to RFFF patients. The SCIP flap was significantly less frequently used for composite resections including bone when compared to the RFFF (P < 0.001). The primary site distribution was more even for RFFF patients (P < 0.001). There were no SCIP flap failures; three RFFF failures occurred. SCIP flaps performed comparably in terms of operative and clinical outcomes. Most SCIP flaps were utilized in younger patients with partial glossectomy defects.

Groin and anterolateral thigh flaps for hemiglossectomy reconstruction: A comparison based on Japanese speech intelligibility

OBJECTIVE

The differences in speech function between groin flap reconstruction and anterolateral thigh (ALT) flap reconstruction after hemiglossectomy have not been clarified to date. This study aimed to compare Japanese speech intelligibility after hemiglossectomy reconstruction using groin and ALT flaps of similar thickness.

METHODS

Data of patients who underwent hemiglossectomy reconstruction with groin or ALT flaps between April 2010 and March 2020 were collected from the medical chart database. The ALT flap was the first choice for hemiglossectomy reconstruction, and a groin flap was used when the ALT flap was >10 mm. Cases in which speech intelligibility assessments based on Hirose's 10-point scoring system, the TKR speech test, and the Japanese speech intelligibility test for 100 monosyllables were performed after 6 months postoperatively were extracted. The per-patient scores for each assessment were initially compared between the two flap groups. Then, the results of the Japanese speech intelligibility test for 100 monosyllables were reanalyzed on a syllable-by-syllable basis.

RESULTS

Among the 44 hemiglossectomy patients who underwent free-flap reconstruction during the study period, 14 (seven each in the groin flap and ALT flap groups) underwent all three conventional speech intelligibility assessments after 6 months postoperatively. The two groups showed no significant difference in postoperative speech intelligibility in any of the three patient assessment methods. However, in intergroup comparisons based on per-syllable accuracy for each of the 100 monosyllables, the groin flap group showed 19 syllables with a significantly higher accuracy, whereas the ALT flap group showed one such syllable. In particular, five out of the six alveolar consonants (/t/ and /d/) were more accurately articulated in the groin flap group. Per-syllable accuracy was significantly higher in the groin flap group (74.6% vs. 66.7%; 95% confidence interval: 4.6-11.1, p < 0.001).

CONCLUSION

In patients undergoing hemiglossectomy reconstruction, our new analysis method, which compared intelligibility by syllables, showed that the groin flap yielded higher speech intelligibility than the ALT flap. This difference was evident at all four articulation points involving the tongue, whereas there was no significant difference at the two articulation points without tongue involvement.

Anterolateral thigh, radial forearm and superficial circumflex iliac perforator flaps in oral reconstruction: a comparative analysis

BACKGROUND

Anterolateral thigh (ALT) and Radial forearm free flaps (RFFF) are historically the most common methods of oral reconstruction. The Superficial circumflex iliac artery perforator flap (SCIP) is an alternative providing a donor site that can be readily closed primarily with improved cosmesis in younger patients, due to its concealability.

METHODS

We reviewed 135 patients who received ALT, RFFF or SCIP flaps for oral reconstruction in our institution. Our aim was to compare operative and perioperative outcomes between each cohort. ANOVA and χ² test were used for statistical analysis.

RESULTS

There were 37 ALT, 64 RFFF and 35 SCIP reconstructions. Patients reconstructed with SCIP flaps had smaller resection volumes (P < 0.001) and earlier T and N classifications (P = 0.001, P = 0.008), and consequently reduced tracheostomy rates (P < 0.001), reduced need for enteral feeding at discharge (P < 0.001) and shorter length of stay and perioperative times (P < 0.001). SCIP flaps were more common in younger patients (P < 0.01). ALT flaps were used for more advanced disease (P = 0.001) and had larger resection volumes (P < 0.001) and increased need for assisted enteral feeding (P < 0.001). There were no significant differences in flap or donor site outcomes. There were two flap failures, both RFFF.

CONCLUSION

Each flap plays an important role in the reconstruction of oral defects, with larger defects preferentially reconstructed with ALT flaps. SCIP appears to be a reliable alternative in small defects with excellent perioperative and postoperative outcomes.

The extended SCIP flap: an anatomical and clinical study of a new SCIP flap design

PURPOSE

We describe a variation of the superficial circumflex inguinal artery perforator (SCIP) flap, based the superficial branch of the superficial circumflex inguinal artery (SCIA) METHODS: The vascular supply of the SCIP flap was prospectively studied in 91 preoperative CT angiograms in patients undergoing reconstruction with other flaps, and verified randomly with a hand-held doppler in 20% of them. Based on the results, a new SCIP flap was designed medial and cranial to the anterosuperior iliac spine (ASIS) using the superficial branch of the SCIA. This flap was used in 39 patients to reconstruct lower limb and head and neck defects RESULTS: The superficial branch of the SCIA was found in all patients and its exit point through Hesselbach's fascia was located within a 21 mm-radius circumference drawn 18 mm medial and 17 mm distal to the ASIS in 90% of the patients. Reconstruction with this SCIP flap was successful in 92.3% of the patients. Complications were present in 17.9% of the patients CONCLUSIONS: The design of the SCIP flap can be displaced cranially to obtain a larger flap with a long and constant vascular pedicle that is based on the main trunk of the SCIA. This facilitates the reconstruction of large and complex three-dimensional defects that require thin and pliable tissue, such as those located in the head and neck or limbs. Furthermore, supramicrosurgical expertise is not required.

LEVEL OF EVIDENCE

IV.

Case Report: Superficial Circumflex Iliac Artery Perforator Flap for Tongue Reconstruction Following the Hemiglossectomy

Objective: Therapeutic evaluation of applying superficial circumflex iliac artery perforator (SCIP) flap in tongue reconstruction after hemiglossectomy.

Methods: We retrospectively collected a total number of 14 patients who received SCIP flap reconstruction for tongue defects at the Fujian Medical University affiliated Union Hospital, between November 2016 and November 2020. We evaluated the clinical features of the flap, analyzed the postoperative functions and esthetic effects after 6 months of the tongue reconstruction.

Results: All the SCIP flaps survived successfully after the operation, the recipient site tongue bodies were well reconstructed 6 months after the surgery. Patient speech and swallowing functions were well recovered during the follow-up. The scars in the donor site were concealed with limited numbness.

Conclusions: With the advantages of the hidden donor site and aesthetic benefits, the SCIP flap is a reliable option for the reconstruction of the tongue defect after hemiglossectomy.

Abdominal-based free flaps in head and neck reconstruction

PURPOSE OF REVIEW

The head and neck reconstructive surgeon is intimately familiar with the anterolateral thigh, radial forearm, and parascapular flaps. This review serves to describe the major abdominal-based free tissue transfers in head and neck reconstruction that can be used as alternatives to these traditional workhorse flaps.

RECENT FINDINGS

Abdominal-based free flaps, while not traditionally used in head and neck reconstruction, are great alternatives or second-line flaps. For example, the deep circumflex iliac artery flap is an excellent alternative to the fibular free flap due to its bone height and greater overall quality of life.

SUMMARY

This review article serves to review the major abdominal-based free tissue transfers in head and neck reconstruction in order to expand the toolbox of the head and neck surgeon.

[Superficial Circumflex Iliac Artery Perforator flap (SCIP flap): Revival of the inguinal donor site?]

The SCIP flap based on a superficial circumflex iliac perforator artery (SCIA) was described for the first time by Koshima in 2004 as a large and thin groin flap, with a low morbidity. The purpose of this study is to demonstrate the benefits of SCIP flap to cover cutaneous defects. We present a retrospective study from January 2007 to August 2016. Twelve patients had a SCIP flap reconstruction in the plastic surgery department of Amiens hospital. Thirteen flaps were performed. The average preoperative doppler mapping time was 8minutes. The average size of flaps was 62.5cm² [21; 180cm²]. The average time required for raising flaps was 61min [52; 82min]. It has not been observed any complication of the flap or donor site. The SCIP flap has a thin paddle and the donor site morbidity is minimal. The surgical technique is safe, accessible and precision is increased by preoperative color doppler mapping. The many strengths of the SCIP flap make it a must in the algorithm for defects management and come to revitalize the inguinal donor site.