Design of a Reliable Skin Paddle for the Fibula Osteocutaneous Flap: Perforator Anatomy Revisited:

An Overview Algorithm for Perforator Free Flap Coverage of all Zones of the Mangled Upper Extremity

A truly mangled upper extremity will undoubtedly need composite tissue rearrangement to ensure adequate wound healing; but often also the replacement of missing parts, always with the goal of maximizing functional rehabilitation. Whatever the approach, restoration of the cutaneous envelope surrounding the underlying repaired musculoskeletal system will be mandatory. Vascularized tissues as flaps frequently will be essential to accomplish this goal; however, intrinsic local donor sites not only may not be available due to the injury itself or if chosen would contribute to further injury. Instead, microvascular tissue transfers will play an important role. In this regard, the perforator free flap today has gained prominence as "like can replace like," sensibility is restored, secondary procedures are more simply approached, and donor site morbidity is reduced since no muscle needs to be sacrificed, maximizing function preservation. However, perforator flap donor sites are highly variable, providing another attribute that, on selection, may best meet the requirements for the involved zone of the upper extremity.

The clinical application and anatomical analysis of proximal peroneal artery perforator in free fibula flap based on CTA

BACKGROUND

The vascularized free fibular flap is increasingly recognized as the standard technique for the repair of complex soft tissue and hard tissue defects in oral and maxillofacial surgery. Conventionally, the vascular supply to the skin island is derived from the distal perforators of the peroneal artery. However, complications may arise if these distal perforators are either absent or damaged during surgical procedures, highlighting the necessity to employ the proximal peroneal perforators as an alternative. This study aims to investigate the anatomical characteristics-including the presence, distribution, and origin-of proximal peroneal perforators through computed tomography angiography (CTA) prior to surgical intervention. A secondary objective is to confirm their viability when distal perforators are unavailable or when dual-skin paddles are needed.

METHODS

A comprehensive review was conducted involving 50 patients who underwent CTA examinations. Three-dimensional reconstruction of DICOM data was utilized to document the presence, quantity, location, and variations of proximal perforators. Relative positions of the origin points were measured, and the distances from these points to the fibula were calculated. Additionally, 11 studies were included in which a proximal perforator was successfully used to prepare a free fibula chimeric myocutaneous flap for the reconstruction of maxillofacial defects.

RESULTS

Among the 100 lower limbs evaluated, a successful identification rate of 98% for proximal perforators was achieved via CTA. Of those identified, 70% were found to originate from the fibular artery, 22% branched concurrently with it, and 8% emerged prior to the point of emergence of the fibular artery. Analysis through curve fitting indicated that the origin points of proximal perforators were predominantly located approximately 13.17 mm below the origin of the fibular artery, with their endpoints projecting about 123.9 mm below the fibular head.

CONCLUSIONS

The high prevalence of proximal peroneal perforators identified in this population, along with their relatively stable anatomical positions, suggests their significant surgical potential. In scenarios where the distal peroneal perforator is absent or suffers intraoperative injury, the proximal peroneal perforator can serve as a reliable alternative for preparing a free fibula osteal flap combined with a proximal peroneal perforator skin paddle.

Closure of the osteocutaneous fibula flap donor site with a tonearm (propeller) flap: Anatomic considerations and surgical indications

BACKGROUND

Skin graft is frequently used for donor site closure after osteocutaneous fibula free flap (OCFFF) harvest when primary closure is not possible. Partial skin graft loss requiring wound care is a common complication. The purposes of this prospective study were to investigate the perforator anatomy for local propeller or tonearm flap closure and compare the outcomes to those of skin graft closure.

METHODS

All patients undergoing OCFFF for head and neck reconstruction from February 2022 to October 2023 were considered for the tonearm flap. Intraoperative perforator anatomy was prospectively recorded. Surgical techniques and criteria for tonearm flap reconstruction were described. A minimum follow-up period of 6 months was required. Outcome measures included the rate of flap success and wound complications.

RESULTS

Forty consecutive patients were included. The tonearm flap was not possible in 16 patients (40%) due to unfavorable perforator anatomy and 2 patients underwent primary closure. All successful tonearm flaps were eccentrically designed on a proximal lower leg perforator, located 13.5 ± 1.99 cm from the fibular head. Most proximal perforators were musculocutaneous through the soleus muscle (n = 20, 90.9%), whereas the rest were septocutaneous (n = 2, 9.1%), originating from the peroneal artery. Three patients experienced distal partial flap loss; one required an additional skin graft. Only half of the skin graft cohort (n = 99, 50.8%) achieved complete skin graft take. The average skin graft loss was 34.3%, and wound care was required for an average period of 51.6±52.8 days.

CONCLUSIONS

The study findings demonstrate that local tonearm flaps, when anatomically feasible, can be successfully performed with superior outcomes compared to skin graft closures.

Division versus de-epithelialization of fibula osteocutaneous flap for composite oromandibular defects: A propensity score-matched analysis

BACKGROUND

Different fibula osteocutaneous free flap (FOCFF) configurations have been described with a double-skin paddle (DSP) to address composite through-and-through oromandibular defects: division of the skin paddle using different perforators (div-FOCFF) or a de-epithelialized DSP FOCFF (deEpi-FOCFF). This study aimed to compare the surgical outcomes using these two methods (deEpi-FOCFF/div-FOCFF).

METHODS

Patients who underwent segmental mandibulectomy and reconstruction with a DSP FOCFF between 2011 and 2014 were included. We compared postoperative outcomes of patients undergoing reconstruction with deEpi-FOCFF versus div-FOCFF implementing propensity score matching.

RESULTS

Of the 245 patients, 156 cases (78 pairs) were 1:1 matched. Demographic and oncologic variables were comparable between groups. The average age was 57.68 years. A higher number of perforators per flap was evident in the div-FOCFF group (p < 0.001). The deEpi-FOCFF group exhibited a higher total flap loss rate when compared to the div-FOCFF group (15 % versus 5 % p = 0.03). On multivariate analysis, number of perforators per flap (OR 0.31, p = 0.02), using the deEpi-FOCFF (OR 3.88, p = 0.03), and an increased reconstructive time (OR 1.01, p = 0.01) independently affected the likelihood of free flap failure.

CONCLUSION

If the number and location of perforators are optimal, div-FOCFF improves reconstructive outcomes for composite oromandibular defects versus the deEpi-FOCFF.

Early outcomes of osteofascial versus osteocutaneous fibula free flap mandibular reconstruction

BACKGROUND

This study compares early outcomes of osteofascial fibula free flap (OF-FFF) with donor-site primary closure and osteocutaneous (OC) FFF with donor-site skin grafting in segmental mandibular reconstruction.

METHODS

A retrospective chart review of FFF mandibular reconstruction patients (2006-2022) divided into OF-FFF and OC-FFF groups. Clinical data, operative parameters, and early postoperative outcomes (≤ 90 days) were analyzed.

RESULTS

The study included 67 patients (39 OF-FFF, 28 OC-FFF). OF-FFF had significantly lower donor-site complications (12.8% vs. 53.6%, p < 0.001) and revision surgeries (7.7% vs. 35.7%, p = 0.004) compared to OC-FFF. Recipient-site (28.2% vs. 25%, p = 0.77) and flap (15.4% vs. 17.9%, p > 0.99) complications were comparable.

CONCLUSIONS

OF-FFF mandibular reconstruction with donor-site primary closure is a safe and reliable technique associated with superior donor-site and comparable flap and recipient-site outcomes to OC-FFF, thus may be considered as a viable alternative to OC-FFF for selected patients.

Functional and esthetic outcomes of virtual surgical planning versus the conventional technique in mandibular reconstruction with a free fibula flap: A retrospective study of 24 cases

This study aimed to compare the functional and esthetic results in patients following mandibular reconstruction with a free fibula flap (FFF) by virtual surgical planning (VSP) versus the conventional technique. Patients who had undergone mandibular reconstruction with a FFF by VSP or the conventional technique were retrospectively assessed. The two groups were compared regarding functional and esthetic variables with appropriate scales preoperatively, intraoperatively, and postoperatively. Twenty-four patients were evaluated in two groups: conventional (n = 8) and VSP (n = 16). The mean amount of mandibular asymmetry was 2.62 mm (SD = 1.59) in the conventional group and 1.19 mm (SD = 1.32) in the VSP group. Of the patients who underwent conventional surgery, 12.5% had mandibular asymmetry of <2 mm and 87.5% had asymmetry of 2-5 mm. Of the VSP patients, 61.5% had mandibular asymmetry of <2 mm and 38.5% had mandibular asymmetry of 2-5 mm (p = 0.03). The mean difference in size of mandibular angle on the surgical and control sides was not significantly different between the two groups (p = 0.62). The difference in mean length of the mandibular body on the surgical side relative to the control side was not significant between the two groups (p = 0.75). Differences in functional variables between the two groups were not significant. Within the limitation of the study, it seems that the VSP technique resulted in better facial symmetry and superior esthetic outcomes compared with the conventional technique.

Fibular free flap with proximal perforator skin paddle due to aberrant anatomy - a case report

BACKGROUND

The fibular free flap is considered one of the most valuable options for mandible reconstruction. A perforator flap has gained widespread acceptance in oral and maxillofacial reconstruction. Typically, the fibula flap is obtained primarily with the distal perforator due to its reliable blood supply, with less attention given to the proximal perforators during the harvesting process. Normally, the distal perforator of the fibula exhibits stability and shows limited anatomical variations. However, there have been reported cases in which the distal perforator is absent. At times, these vascular abnormalities remain undetectable through Doppler examination or preoperative angiography evaluation. Therefore, this case details the experience of encountering the rare event of vascular abnormality in oral cancer surgery.

CASE PRESENTATION

This article reports the case of a patient who presented with a congenital absence of the distal perforator in the peroneal artery, attributed to a vascular abnormality. Additionally, we provide a review of the concept of utilizing the proximal perforator as an alternative approach in the flap harvesting process.

CONCLUSIONS

While the distal perforator of the peroneal artery is typically utilized for fibula free flap procedures, surgeons must remain cognizant of the potential for its absence due to aberrant anatomy. Recognizing an alternative approach in such cases can be pivotal for precise surgical planning and favorable outcomes in oral and maxillofacial reconstruction.

Management of Through-and-Through Oromandibular Defects after Segmental Mandibulectomy with Fibula Osteocutaneous Flap

BACKGROUND

 Oromandibular defects involving the external skin are a reconstructive challenge. This study aimed to evaluate the use of the fibula osteocutaneous free flap (FOCFF) for through-and-through oromandibular defects by comparing the surgical outcomes and complications of different techniques to close the external skin defect.

METHODS

 A retrospective analysis was conducted of patients who underwent reconstruction of through-and-through oromandibular defects after oncologic segmental mandibulectomy between January 2011 and December 2014. Five groups were analyzed according to the method of external skin coverage: primary closure, locoregional flaps, deepithelialized double-skin paddle FOCFF (deEpi-FOCFF), division of the skin paddle for double-skin paddle FOCFF (div-FOCFF), and a simultaneous second free flap. Intraoperative and postoperative outcomes along with complications were analyzed between groups.

RESULTS

 A total of 323 patients were included. The mean total defect area requiring a simultaneous second free flap was larger in comparison to other groups (p < 0.001). Reconstructions performed with div-FOCFF had a higher number of perforators per flap when compared with deEpi-FOCFF (p < 0.001). External defects closed with another free flap exhibited higher intraoperative time for the reconstructive segment in comparison to other groups (p < 0.05). The overall rate of complications was comparable between groups (24%, p = 0.129).

CONCLUSION

 The FFOCF is a reliable alternative to harvesting multiple simultaneous free flaps for through-and-through oromandibular defects. The authors recommend appropriate curation of the surgical plan based on individual patient characteristics and reconstructive requirements.

Introduction and preliminary application report for a novel 3D printed perforator navigator for fibular flap surgery

The aim of this study was to introduce and report on a 3D-printed perforator navigator and its clinical application. Integrated imaging and 3D printing techniques were employed for the design and manufacture of a perforator navigator. Key techniques included establishing a digital image coordinate system, localizing perforator fascia piercing points, creating a reference plane for the perforator course, and projecting the perforator course onto the body surface. All cases of maxillofacial defect repaired with free fibular myocutaneous flaps, from January 2019 to January 2022, were reinvestigated. Patients treated using traditional perforator localization methods were assigned into group Ⅰ, while those who had a navigator used during treatment were allocated to group Ⅱ. Outcome measurements included perforator positioning accuracy, perforator preparation time (PT), and flap growth score. Capillary refilling time and degree of flap swelling were recorded on the 1st, 3rd, and 7th days after surgery. On the 10th day after surgery, the flap survival situation was graded. In total, 25 patients were included in the study. Perforator preparation time for group Ⅱ was significantly less (p ＝ 0.04) than for group Ⅰ (1038.6 ± 195.4 s versus 1271.4 ± 295.1 s. In group Ⅱ, the mean positioning deviation for the perforator navigator was 2.12 cm less than that for the high-frequency color Doppler (p ＝ 0.001). Group Ⅱ also had a higher score than group Ⅰ for overall flap growth evaluation (nonparametric rank sum test, p ＝ 0.04). Within the scale of the study, it seems that perforator localization and navigation using a 3D-printed navigator is technically feasible, and helps to improve the clinical outcome of free fibular flaps. The perforator navigator will play a useful role in displaying the perforator course, improving the accuracy of perforator localization, reducing surgical injury, and ultimately enhancing flap success rate.

Evolution of Medical Modeling and 3D Printing in Microvascular Midface Reconstruction: Literature Review and Experience at MD Anderson Cancer Center

Reconstruction of the midface represents a challenge for reconstructive microsurgeons given the formidable task of restoring both aesthetics and functionality. In particular, preservation of proper globe positioning and maintaining normal vision are as important as restoring the proper projection of the midface and enabling a patient to speak and eat as normally as possible. The introduction of virtual surgical planning (VSP) and medical modeling has revolutionized bony reconstruction of the craniofacial skeleton; however, the overwhelming majority of studies have focused on mandibular reconstruction. Here, we introduce some novel advances in utilizing VSP for bony reconstruction of the midface. The present review aims (1) to provide a review of the literature on the use of VSP in midface reconstruction and (2) to provide some insights from the authors' early experience.

Proximal fibular axis is a reliable landmark for tibial coronal alignment in patients with or without knee osteoarthritis: A radiological comparative study

BACKGROUND

Proper coronal alignment of the limb is of vital importance in the progression of knee osteoarthritis even in the long-term survivorship of component after total knee arthroplasty (TKA). Nevertheless, to the best of our knowledge, the relationship between coronal fibular axis and tibial mechanical axis had not reached a consensus in the literatures available. The current study aimed to explore the anatomic relationship between tibia and fibula alignment.

METHODS

A total of 100 patients with knee osteoarthritis scheduled for total knee arthroplasty were enrolled in this study (Group A), and radiographic measurement was compared to a control group of 100 healthy volunteers without knee osteoarthritis (Group B). Full-length standing hip-to-ankle radiographs were used to assess limb alignment. The angle between coronal proximal fibular anatomic axis and tibia mechanical axis (PFTA) was used to represent the anatomic relationship between tibia and fibula alignment. A negative value indicates fibula varus relative to tibia mechanical axis, while a positive value indicates fibula valgus.

RESULTS

The mean PFTAs were -0.9° ± 0.9° and -1.0° ± 0.8° in Groups A and B. There was no significant difference between the two groups. No significant difference was detected in PFTA distribution in the group A and B. When the mean value of PFTA is used as baseline data, the percentage of subjects in which the PFTA deviation was within 0.5°, 1°, and 1.5° was 51%, 84%, and 94% in Group A and 53%, 87%, and 96% in Group B. There was also no significant difference in distribution deviation between the two groups. No patient-specific factors were correlated with the PFTA.

CONCLUSIONS

The proximal fibular anatomic axis is a reliable landmark for tibial mechanical axis in the coronal plane in patients with or without knee osteoarthritis.

A Salvage Strategy for the Fibula Osteocutaneous Flap Without Traditional Perforator: A Case Report of Peroneal Artery Tibialis Anterior Cutaneous Perforator Skin Paddle

The fibula osteocutaneous flap is the most commonly used flap to repair jaw defects, which can be used for composite soft and hard tissue reconstruction. Traditionally, the skin paddle of the fibula osteocutaneous flap is based on perforators from the peroneal artery, which is affifixed to the posterior crural septum between the peroneus and the soleus. The anatomy is relatively constant, and the perforators of skin paddle variation encounter in clinical occasionally. The authors report a case of reconstruction of mandible and soft tissue with fibula osteocutaneous flap after extensive radical resection of squamous cell carcinoma of the mouth floor. In this case, the authors raised a skin paddle based on the anterior tibial perforator of peroneal artery from the anterolateral intermuscular septum between the peroneus and the anterior calf muscles, which successfully rescued the traditional perforator absence and avoided exploration for a second donor site.

Time-of-Flight Angiography in Ultra-High-Field 7 T MRI for the Evaluation of Peroneal Perforator Arteries Before Osseomyocutaneous Flap Surgery

OBJECTIVES

Presurgical identification and morphologic characterization of the peroneal perforator arteries (PPAs) are essential for osseomyocutaneous flap surgery. The aim of this study was to evaluate PPAs using time-of-flight (TOF) angiography in 7 T magnetic resonance imaging in comparison with dual-energy computed tomographic angiography (CTA).

MATERIALS AND METHODS

In this prospective study, TOF angiography and CTA of both lower legs were acquired before flap surgery from 07/2019 to 02/2020. Magnetic resonance imaging was performed using a dedicated 28-channel knee coil with an acquisition time of 9:55 minutes (voxel size: 0.4 × 0.4 × 0.8 mm). Computed tomographic angiography was acquired with a third-generation dual-source computed tomography on the same day. Virtual monoenergetic reconstructions at 40 keV photon energy served as the standard of reference for PPA identification and subtyping. Two independent readers assessed the image quality, quantity, length assessment, and classification according to surgical considerations of PPAs for TOF angiography and CTA. Both TOF angiography and CTA were used for presurgical flap design and were evaluated by an orofacial surgeon.

RESULTS

Ten patients (mean age, 59.9 ± 14.9 years; 7 men) were included. Time-of-flight angiography and CTA identified 53 and 51 PPAs in total, respectively. Time-of-flight angiography showed superior image quality (both readers, P < 0.05). Time-of-flight angiography enabled specific classification of PPA subtypes more often (53 vs 39; P < 0.05), and both readers reported higher diagnostic confidence for TOF angiography than CTA in all patients (interrater agreement κ = 0.8; P < 0.05). Regarding length assessment, PPAs were significantly more conspicuous with TOF angiography (TOF mean , 50 ± 11 mm; CTA mean , 40 ± 9 mm; P = 0.001). In comparison with CTA, TOF angiography prospectively changed the orofacial surgeon's final decision on the presurgical selected PPAs in 60% of cases.

CONCLUSIONS

Presurgical assessment of PPAs is feasible using TOF in 7 T magnetic resonance imaging. Moreover, TOF angiography was superior to CTA for classifying and identifying PPAs, which may facilitate the planning of reconstructive surgery.

Evaluation of Lower Leg Arteries and Fibular Perforators before Microsurgical Fibular Transfer Using Noncontrast-Enhanced Quiescent-Interval Slice-Selective (QISS) Magnetic Resonance Angiography

(1) Background: Preoperative imaging of the lower leg arteries is essential for planning fibular grafting. The aim of this study was to evaluate the feasibility and clinical value of non-contrast-enhanced (CE) Quiescent-Interval Slice-Selective (QISS)-magnetic resonance angiography (MRA) for reliably visualizing the anatomy and patency of the lower leg arteries and for preoperatively determining the presence, number, and location of fibular perforators. (2) Methods: The anatomy and stenoses of the lower leg arteries and the presence, number, and location of fibular perforators were determined in fifty patients with oral and maxillofacial tumors. Postoperative outcomes of patients after fibula grafting were correlated with preoperative imaging, demographic, and clinical parameters. (3) Results: A regular three-vessel supply was present in 87% of the 100 legs. QISS-MRA was able to accurately assign the branching pattern in patients with aberrant anatomy. Fibular perforators were found in 87% of legs. More than 94% of the lower leg arteries had no relevant stenoses. Fibular grafting was performed in 50% of patients with a 92% success rate. (4) Conclusions: QISS-MRA has the potential to be used as a preoperative non-CE MRA technique for the diagnosis and detection of anatomic variants of lower leg arteries and their pathologies, as well as for the assessment of fibular perforators.

Myofascial iliac crest flap for reconstruction of combined oral mucosa-mandibular defects: A single-centre experience

BACKGROUND

Deep circumflex iliac artery (DCIA) myofascial iliac crest flap has been used for combined oral mucosa-mandibular defects reconstruction. The bone component of this composite flap can reconstruct the mandible with superior contour match, and the muscle fascia which used for repairing the oral mucosa defect will transform into an oral mucosa-like appearance. To explore its scope of clinical application and how the fascia transformed into oral mucosa will give surgeons flexibility to reconstruct the combined oral mucosa-mandibular defects.

METHODS

A retrospective review of 18 patients who received combined oral mucosa-mandibular defects reconstruction with DCIA myofascial iliac crest flaps from Dec 2016 to Dec 2020 was performed. The characteristics of the mandibular defects and the flaps were recorded. The postoperative dynamic changes of one graft's fascia were observed from serial photographs.

RESULTS

All myofascial iliac crest flaps survived successfully. The bone grafts were from 4.0 to 9.5 cm (mean 7.6 ± 1.5 cm) in length and from 2.0 to 3.5 cm (mean 2.7 ± 0.4 cm) in height. The sizes of fascia were from 13.5 to 48.0 cm² (mean 27.2 ± 9.4 cm²). The grafted fascia firstly changed into a yellow pseudomembrane-like appearance, and then experienced muscle oedema before finally transformed into an oral mucosa-like appearance at about 60 days after operation.

CONCLUSION

Myofascial iliac crest flap is a good option for reconstruction of combined oral mucosa-mandibular defects because of its excellent bone and oral mucosa matches.

Preoperative Peroneal Artery Perforator Mapping Using Indocyanine Green Angiography: A Prospective Clinical Trial

BACKGROUND

Perforator imaging is a prerequisite in preoperative planning of the peroneal perforator flap and the fibula skin island. Although reports indicate that indocyanine green angiography assessment method might be advantageous over conventional ultrasound-based techniques (i.e., Doppler and color duplex), in practice, clear evidence is lacking. Thus, a comparative assessment of the utility of indocyanine green angiography and ultrasound-based techniques in the identification of suitable lower leg skin perforators was performed.

METHODS

A prospective clinical cohort study with a series of 12 consecutive patients was conducted to assess indocyanine green angiography, Doppler ultrasound, and color duplex ultrasound techniques for preoperative perforator detection in the lower leg before free fibula flap harvest. Anatomical dissection served as a reference. Parameters measured were perforator spatial distance to the reference (precision), operative time expenditure, and ease of device usage for assessment/outcomes.

RESULTS

This study included 12 patients, with a total of 27 perforators. Exhibition of technique sensitivity and positive predictive values were as follows: indocyanine green angiography, 93 percent and 100 percent; Doppler ultrasound, 82 percent and 82 percent; and color duplex ultrasound, 89 percent and 86 percent, respectively. With regard to the indocyanine green angiography technique, the distance to the actual perforator location was significantly shorter, which aided detection and lesser time expenditure during operation.

CONCLUSIONS

The indocyanine green angiography technique proved to have high precision, sensitivity, positive predictive value, and easy-to-use capabilities because of its exceptional spatial and temporal information, compared to the conventional, ultrasound-based techniques. Therefore, indocyanine green angiography is superior for preoperative perforator imaging of the lateral lower leg.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Diagnostic, II.

Reconstruction of complex oro-mandibular defects by four different modifications of free fibula osteomyocutaneous flap: A prudent alternative to multiple flaps

INTRODUCTION

Resection of advanced oral squamous cell carcinoma results in complex oro-mandibular defects involving external skin, oral mucosa, and bone. Reconstruction of such defects by a single free fibula flap (FFF) is limited by the lack of soft tissue bulk and adequate skin paddle for both intra- and extra-oral coverage. In this study, the reconstruction of large defects was achieved by four modifications of free fibula osteomyocutaneous flap as an alternative to multiple flaps.

METHODS

In this prospective study, 29 patients with complex oro-mandibular defects were reconstructed by FFF from December 2018 to October 2020. Reconstruction was done with any one of the four FFF modifications involving large proximal skin paddle from lateral leg: Strip de-epithelialization (De-Ep), chimeric bipaddle (Ch-Bp), muscle orally and skin extra-orally (Mo-Se), and double microvascular (Db-Mi). Outcome variables assessed were functional and esthetic results, early/late complications, donor site morbidity, and operative time. An algorithm based on Cordeiro's classification is proposed to assist in the selection of appropriate FFF modification.

RESULTS

Among 29 patients, De-Ep was used in 13, Ch-Bp in 8, Mo-Se in 7, and Db-Mi in 1 case. None of the flaps underwent total loss. Two cases required re-exploration. The median operative time was 775 min. Wound dehiscence and oro-cutaneous fistula were common early and late complications, respectively. Partial split skin graft loss (SSG) was the most common donor site morbidity. Functional and facial aesthetics were acceptable at the end of follow-up.

CONCLUSIONS

Specific FFF modifications can be recommended in selected scenarios. It is reliable for single-stage reconstruction with satisfactory esthetic and functional outcomes. When used for reconstruction in first primary tumors, the second donor site is preserved, which can prove valuable in the event of a recurrence or second primary.

One-stage reconstruction of extensive composite extremity defects with low donor site morbidity: A retrospective case series of combined transfer of a vascularized fibula flap and a perforator flap

BACKGROUND

Extensive composite extremity defects remain a challenge in plastic and reconstructive surgery. To preserve the extremity, we used combined transfer composed of the vascularized fibula flap and a perforator flap from various body parts to reconstruct extensive composite extremity defects.

PATIENTS AND METHODS

From January 2004 to December 2018, 14 male patients aged 9 to 55 years with extensive composite extremity defects (large soft-tissue and long bone defect) underwent reconstructive surgery in our institution. The combined transfer surgery consisted of the vascularized fibula bone flap and a perforator flap, such as anterolateral thigh flap, deep inferior epigastric perforator flap, or thoracodorsal artery perforator flap.

RESULTS

All fourteen patients were treated successfully using the combined transfer method. The dimensions of the different perforator flaps ranged from 13 × 6 cm² to 26 × 11 cm², and the size of the skin paddle of the fibular osteocutaneous flap ranged from 9 × 3 cm² to 21 × 7 cm². The median length of the fibular graft was 15 cm. No serious donor site complications were observed. Only one patient developed venous congestion and was salvaged. Another patient had hematoma at the recipient site and underwent debridement. Though all patients achieved bone union (median time of 8 months), two developed a stress fracture of the transferred free fibula.

CONCLUSION

We were able to minimize donor site morbidity and avoid amputation in these patients using the combined transfer technique Our results show that the combined transfer of perforator flap and vascularized fibula flap with or without a skin paddle is a feasible reconstruction option for the treatment of the extensive composite extremity defects.

Strategy for preventing skin paddle necrosis in mandibular reconstruction with free fibula osteocutaneous flap

BACKGROUND

Non-thrombotic skin paddle necrosis occasionally occurs during mandibular reconstructions with free fibula osteocutaneous flaps. The number of perforators, size of the skin paddle, and ischemia time of the flap are considered as causes of skin paddle necrosis. The importance of donor side selection has also been highlighted. This study aimed to investigate the leading cause of skin paddle necrosis and the optimal reconstructive procedure.

METHODS

A total of 66 patients who underwent mandibular reconstruction using a free fibula osteocutaneous flap were retrospectively analyzed. Skin paddle necrosis, number of cutaneous perforators, size of the skin paddle, and ischemia time of the flap were investigated. An incorrect "laterality" was defined as a skin paddle (septum) covering the reconstruction plate. Donor-site morbidity was recorded.

RESULTS

Skin paddle necrosis occurred in 15.2% of patients. An incorrect laterality was associated with a higher incidence of skin paddle necrosis (odds ratio, 22.0; 95% confidence interval, 2.5-195; p = .005). Donor-site morbidity was noted in 18.8% of the patients, without any significant difference in terms of the donor side with and without skin graft (p = .592). The postoperative activities of daily living were not affected.

CONCLUSIONS

To prevent skin paddle necrosis, donor side selection is an important safety strategy during mandibular reconstruction with free fibula osteocutaneous flap. The postoperative activities of daily living were found to be little affected by differences in the donor side.

Chimeric LSMAP Double-barrel Fibula Free Flap: Goal-oriented Surgical Technique and Tips for One-stage Mandibular Reconstruction

Composite oromandibular defects involving jaw bones, intraoral and skin/soft tissues, or dynamic structures such as the tongue, soft palate, and pharynx are real reconstructive challenges even today. Despite improvements in oral dental rehabilitation, another complex task to deal with in young patients with dentate or nonatrophic mandible is correcting a too large vertical occlusal dimension, which makes the prosthodontic rehabilitation very challenging. Instead of using more complex and time-consuming methods such as simultaneous free flaps and to avoid further bone graft and second-stage revision procedures, an innovative double-barrel shaped chimeric fibula free flap with lateral supramalleolar artery perforator flap is used to fulfill all of the reconstructive requisites in one-stage. This new operative technique has never been described before. To deal with a complex head and neck reconstruction, the step-by-step harvesting technique, flap design, and inset of flap are described, giving tips and tricks to avoid jeopardizing its vascularity. A proper match between the bone transplant and native mandible, together with a sufficient amount of tissue for proper oropharyngeal reconstruction was achieved in one stage. Both the functional and aesthetic results were excellent, requiring no further revisions in a second stage. The chimeric fibula free flap with lateral supramalleolar artery perforator flap is a novel, versatile, and useful technique that provides a good opportunity for clinicians and patients to achieve adequate prosthetic rehabilitation and improved aesthetics in reconstruction of postablative extensive oromandibular defects in one stage.

Computed Tomography Angiography (CTA) before Reconstructive Jaw Surgery Using Fibula Free Flap: Retrospective Analysis of Vascular Architecture

Computed tomography angiography (CTA) is widely used in preoperative evaluation of the lower limbs' vascular system for virtual surgical planning (VSP) of fibula free flap (FFF) for jaw reconstruction. The present retrospective clinical study analysed n = 72 computed tomography angiographies (CTA) of lower limbs for virtual surgical planning (VSP) for jaw reconstruction. The purpose of the investigation was to evaluate the morphology of the fibular bone and its vascular supply in CTA imaging, and further, the amount and distribution of periosteal branches (PB) and septo-cutaneous perforators (SCPs) of the fibular artery. A total of 144 lower limbs was assessed (mean age: 58.5 ± 15.3 years; 28 females, 38.9%; 44 males, 61.1%). The vascular system was categorized as regular (type I-A to II-C) in 140 cases (97.2%) regarding the classification by Kim. Absent anterior tibial artery (type III-A, n = 2) and posterior tibial artery (type III-B, n = 2) were detected in the left leg. Stenoses were observed mostly in the fibular artery (n = 11), once in the anterior tibial artery, and twice in the posterior tibial artery. In total, n = 361 periosteal branches (PBs) and n = 231 septo-cutaneous perforators (SCPs) were recorded. While a distribution pattern for PBs was separated into two clusters, a more tripartite distribution pattern for SCPs was found. We conclude that conventional CTA for VSP of free fibula flap (FFF) is capable of imaging and distinguishing SCPs and PBs.

Prevention and Management of Complications of Tissue Flaps

In this article, we discuss 4 common free flaps performed in reconstructive surgery: the anterolateral thigh flap, the radial forearm flap, the fibula flap, and the transverse rectus abdominis myocutaneous/deep inferior epigastric perforator flap. Donor and recipient complications for each flap type and strategies on how to prevent and manage such complications are discussed.

Oromandibular reconstruction with double-skin paddle fibular free flap: A systematic review and meta-analysis

BACKGROUND

Reconstruction of complex head and neck defects is challenging, especially when more than one soft-tissue subunit is involved. The osteocutaneous fibular flap underwent continual evolution to improve its soft-tissue characteristics, such as including a second skin island. The purpose of this study was to evaluate outcomes regarding oromandibular reconstruction with a double-skin paddle fibular free flap (DSPFFF) using three different techniques: central de-epithelialized skin paddle, distally-based double-skin paddle (DSP), or proximally and distally-based DSP.

METHODS

A systematic review was performed in December 2020 using Pubmed and MedLine Ovid databases according to the PRISMA guidelines. A meta-analysis of functional outcome and complications was performed to estimate single incidence rates.

RESULTS

A total of 449 patients were included, with a follow-up of 1-84 months, where 330 patients underwent reconstruction with the first technique, 23 patients with the second technique, and 96 patients with the third technique. The meta-analysis showed an overall good functional outcome and a low-complication rate for oromandibular reconstruction with DSPFFF. A better functional outcome and a lower complication rate were found when a distally-based DSPFFF was harvested compared to a proximally and distally-based DSPFFF.

CONCLUSION

The DSPFFF was found to be useful and reliable for reconstructing composite and extensive head and neck defects, with an overall good functional outcome and a low-complication rate. The meta-analysis showed a better positive outcome on distally-based DSPFFF rather than proximally and distally-based DSPFFF. In addition, distally-based DSPFFF showed a lower complications rate when compared with proximally and distally-based DSPFFF.

Reconstruction of soft tissue defects around the Achilles region with distally based extended peroneal artery perforator flap

INTRODUCTION

Achilles tendon rupture and soft tissue infections with wound dehiscence and tendon exposure following the tendon repair are not infrequent. Various procedures have been described for the reconstruction of soft tissue defects at the Achilles tendon region, yet there is lack of consensus on the ideal method. In this article we report our experience using the distally based peroneal artery perforator flap in reconstruction of combined defects of the Achilles tendon and overlying soft tissue.

METHODS

7 patients with Achilles tendon injury and full-thickness soft tissue defects over the Achilles region underwent tendon repair and soft tissue reconstruction with the distally based peroneal artery perforator flap. Perforator vessels were identified at the septum between the peroneus longus and soleus muscles. After choosing the perforator with the largest diameter, meticulous deep dissection of the perforator was performed and completed 6 cm proximal to the lateral malleolus. The peroneal artery was transected and ligated and transposition of the flap to the defect was performed through a subcutaneous tunnel.

RESULTS

The size of the soft tissue defects and flaps ranged between 2×3 cm to 4×10 cm and 4×5 cm to 5×12 cm, respectively. Six out of 7 flaps survived completely without any complications. Post-operative venous congestion was observed in one patient which resulted in partial tip necrosis of the flap. The resulting wound healed with conservative treatment. Donor sites healed uneventfully in all patients. All flaps had excellent contour and provided stable soft tissue coverage.

CONCLUSION

Distally based peroneal artery perforator flap can be considered as a reliable alternative for the reconstruction of soft tissue defects around the Achilles tendon region. Advantages include (1) extended reach of the flap for the defects around the plantar and dorsal aspects of the foot, provided by the perforator dissection, (2) convenience with footwear and walking, provided by the skin texture similarity with the target region, (3) creating a protective surface to allow tendon gliding and prevent tissue adhesions after the tendon repair, provided by the crural fascia included in the flap, (4) obviating the need for microsurgical anastomosis and associated length of the operation.

Partial and Total Flap Failure after Fibula Free Flap in Head and Neck Reconstructive Surgery: Retrospective Analysis of 180 Flaps over 19 Years

Fibula free flap (FFF) is widely used in head and neck reconstructive surgery and is considered as a standard and therapy of choice after ablative cancer surgery. The aim of this retrospective monocenter study was to determine the success rates of fibula free flaps for jaw reconstruction after ablative tumor surgery. The disease course of patients who underwent jaw reconstructive surgery with FFF from January 2002 to June 2020 was evaluated regarding the flap success rate. Flap failure was analyzed in detail and categorized into two groups: partial flap failure (PFF) and total flap failure (TFF). A total of 180 free fibular flaps were performed over the last 19 years and a total of 36 flap failures were recorded. TFF occurred in n = 20 (56.6%) and PFF in n = 16 cases (44.4%) cases. No statistically significant differences were found concerning patients' age at flap transfer, sex, BMI, ASA-Score, preoperative non-virtual or virtual surgical planning (non-VSP vs. VSP), and time of reconstruction (immediately vs. delayed). Duration of hospitalization shows statistically significant differences between both groups (p = 0.038), but no differences concerning operating time and duration on Intensive Care Unit (ICU). Partial flap failure appears to be underreported in literature. Sub- and complete failure of the skin paddle leads to clinical complaints like uncovered bone segments and plate exposure. Partial or complete FFF failure lead to infections on the recipient site and prolonged wound healing and therefore may cause a delay of the beginning of adjuvant radiation therapy (RT). PFF of hard tissue can be induced by RT.

Use of soleus musculocutaneous perforator-based propeller flap for lower extremity wound coverage after osteocutaneous fibula free flap harvest

BACKGROUND

Osteocutaneous fibula free flap (OCFFF) donor sites are often covered with skin grafts, with an additional donor site, more postoperative care, and increased cost. The authors examine posterior tibial artery (PTA) based pedicled propeller flaps (PPF) as an alternative for OCFFF donor site coverage.

PATIENTS AND METHODS

Retrospective review of 16 consecutive patients from 30 to 79 years old, who underwent OCFFF reconstruction of head and neck defects (11 mandibular, 5 maxillary), with the closure of donor site with PPF based on a perforator from PTA. Mean donor site defect measured 12.9 × 5.1 cm, PPF was an elliptical design, and rotated 180 degrees in a propeller fashion, to cover donor site defect. Visual analog scale (VAS) was used to assess esthetic results, functional outcomes assessed using mobility and range of motion (ROM), and secondary complications including infections, hematomas, and seromas were recorded. Follow-up period was noted in months postoperatively. Other information collected included underlying head and neck pathology.

RESULTS

Average dimension of PPF measured 13.9 × 4.1 cm. Successful closure of donor site defects in 14 of 16 patients, with two flaps having partial necrosis, one requiring a secondary skin graft. Follow-up was 6 to 10 months, esthetic results with mean VAS 8.8 of 10, full ROM, and mobility noted. No secondary complications were observed. The most common pathology noted was squamous cell carcinoma (6 of 16 patients).

CONCLUSION

PPFs based on the soleus branch of the PTA represent an excellent alternative to skin grafts for the closure of OCFFF donor site defects.

Fibula osteal flap with proximal peroneal perforator skin paddle for composite oromandibular reconstruction: A case report

RATIONALE

Cutaneous perforators of peroneal vessels are divided into proximal and distal perforators on the basis of perforator distributions and musculocutaneous or septocutaneous properties. The traditional fibular osteocutaneous free flap is raised over the distal two-thirds of the fibula with a skin paddle based on distal perforators, which is affixed to the posterior crural septum. However, the skin pedicle may not be available due to anatomic variations or intraoperative injuries. Herein, because of the absence of distal perforators, we reserved and expropriated proximal perforators originating from the musculocutaneous branch of the superior part of the peroneal artery before it divided into nutrient and arcuate arteries and successfully harvested a separate osteal fibula and proximal perforator skin paddle with a single vascular pedicle-peroneal vessel.

PATIENT CONCERNS

A 62-year-old man with a 6-month history of mandibular swelling and soft tissue invasion was referred to us.

DIAGNOSIS

Panoramic radiography and computed tomography showed an irregular radiolucent lesion of the mandibular body, and histopathological analysis confirmed a follicular-pattern ameloblastoma.

INTERVENTIONS

The diseased mandible and soft tissue were resected and reconstructed with a vascularized fibular osteal flap with the proximal perforator skin paddle.

OUTCOMES

The mandibular contour was successfully restored; the skin paddle in the mouth was in good condition after 8 months of follow-up.

LESSONS

The proximal perforator is reliable and practical for supplying a skin paddle and has significant potential for future applications. We recommend reserving the proximal perforator skin paddle as a backup flap when planning to raise a fibula flap, since unavailability or injury of the traditional fibular skin island based on distal perforators occurs frequently. This approach can avoid the exploration for a second donor site, save surgical time, and reduce surgical complexity. Moreover, we anticipate more frequent use of the proximal perforator flap in the future because of its flexibility and large volume, and since it can be combined with the osteal fibula or fibular osteocutaneous flap. However, an understanding of the traits of the proximal perforator and determination of its peroneal origin by computed tomography angiography is crucial for predesigning fibular osteal flaps with a proximal perforator skin paddle.

Peroneal flap: How to harvest and clinical appraisal for head and neck reconstruction

BACKGROUND

A peroneal flap, the boneless version of fibula flap, is considered as the equivalent of radial forearm flap of the lower leg. Because it is thinner than an anterolateral thigh (ALT) flap, the use of a peroneal flap is a viable option for the repair of soft tissue defects when a thin flap could bring about better functional and cosmetic outcomes. In this article, we describe the details of peroneal flap harvest and present our experience with the use of peroneal flaps for head and neck reconstruction.

MATERIALS AND METHODS

Between 1996 and 2017, a total of 265 peroneal flaps were used to reconstruct a variety of head and neck defects. With the same vascular anatomy and slight modifications to the harvesting technique of a fibula flap, a peroneal flap can be harvested within 1-2 h. All medical records were retrospectively reviewed.

RESULTS

A peroneal flap can be harvested as different types of chimeric flaps to fit a variety of head and neck defects. The peroneal flap failure rate was 3.4% and the postoperative complication rate was 12.8%.

CONCLUSION

A peroneal flap might be an alternative option for the reconstruction of head and neck defects.

The anatomical reliability of the superficial circumflex iliac artery perforator (SCIP) flap

INTRODUCTION

In order to achieve a satisfactory functional and aesthetic result a thin skin flap is often required in surgical reconstruction of various body regions. Perforator flaps based on either the superficial or deep branch of the superficial circumflex iliac artery (SCIA) have been used for this purpose mainly in the Asian population. Recently the superficial plane has been established as a new way of elevating the flap. Anatomical studies and details of this new flap are lacking.

MATERIAL AND METHODS

Wide areas were harvested subfascially from the groin of Thiel-fixated cadavers. Both deep and superficial branches of the superficial circumflex iliac artery were carefully dissected and individually injected with μAngiofil. After CT-imaging the flaps were raised on the superficial plane, perforators were marked and the flaps subsequently rescanned. High-resolution images of regions of interest were taken using micro-CT.

RESULTS

A total of 21 flaps were harvested and analyzed. Both the deep and superficial branch provided more than three perforators per branch, however, the deep branch based flap was significantly larger (202 vs. 112 cm², p < 0.01) and had a longer pedicle (9.1 vs. 6.6 cm, p < 0.01). Raising the flap in the superficial plane reliably reduces bulk and increases homogeneity.

CONCLUSIONS

The SCIP flap appears to have a reliable vascular blood supply. The SCIA and its main branches and perforators have a consistent vascular pattern. The deep branch of the SCIA has the anatomic potential to be the preferred pedicle in case larger flaps with longer pedicles are necessary.

Mega Fibula Free Flap for Reconstruction of an Extensive Mandibulofacial Defect

OBJECTIVE

Extensive mandibulofacial defects can be challenging to reconstruct. We present the case of a complex mandibulofacial defect reconstructed with a mega, chimeric fibula free flap.

METHODS

Ablation of the oral cavity tumor resulted in a large defect involving mandible, floor of mouth, and tongue. Skin of the chin and neck as well as the lower lip were also resected. A fibula free flap was harvested with the skin paddle involving most of the lateral compartment.

RESULTS

The fibula free flap was split into proximal (80 cm²) and distal (120 cm²) skin paddle islands, which were supplied by separate perforators off the peroneal artery. The intraoral soft tissue defect was reconstructed with the proximal skin paddle while the skin was recreated with the distal skin paddle. A Karapandzic flap was used to reconstruct the lower lip.

CONCLUSIONS

The traditional fibula free flap skin paddle often does not provide sufficient soft tissue coverage for large mandibulofacial defects. Some surgeons opt to harvest a second free flap. We describe our technique for using the mega fibula free flap - one of the largest reported in the literature - as a single mode of reconstruction.

Effectiveness of computer-assisted virtual planning, cutting guides and pre-engineered plates on outcomes in mandible fibular free flap reconstructions: a systematic review protocol

OBJECTIVE

The objective of this review is to synthesize the best available evidence on the outcomes of mandibular fibular free flap (MFFF) reconstructions using computer-assisted techniques versus traditional freehand techniques.

INTRODUCTION

Fibular free flaps are the most commonly used free flap for mandible reconstruction and are considered best practice for mandible reconstructions following resection of head and neck cancers. There are several reported advantages of computer-assisted MFFF reconstructions, including increased accuracy, decreased operation time, decreased ischemia time, decreased overall cost and improved patient outcomes. It is important to assess the advantages and potential harms of these techniques in a systematic review.

INCLUSION CRITERIA

Eligible studies will consider patients of all ages undergoing MFFF reconstruction. Studies will compare computer-assisted techniques to traditional freehand techniques for the primary outcomes of flap failure, patient-reported outcomes and bony resection margin status. Studies published in English from 2008 will be included. Experimental, quasi-experimental, prospective and retrospective cohort, case-control and analytical cross-sectional studies will be considered.

METHODS

MEDLINE, Embase, Scopus and the Cochrane Central Register of Controlled Trials will be searched. Gray literature sources will include Google Scholar and the World Health Organization International Clinical Trials Registry Platform. Two independent reviewers will screen titles and abstracts, assess full-text papers against the inclusion criteria, evaluate methodological quality using standardized critical appraisal instruments and extract data using a customized form. If possible, data will be pooled for statistical meta-analysis, and a Grading of Recommendations, Assessment, Development and Evaluation (GRADE) Summary of Findings will be presented.

Magnetic resonance angiography for free fibula harvest: anatomy and perforator mapping

The purpose of this study was to outline lower leg vessel anatomy and to investigate reliability and limitations of magnetic resonance angiography (MRA) in patients proposed for microvascular fibula transplantation (free fibula flap (FFF)). We retrospectively investigated MRAs of 99 patients considered for FFF. Frontal MRA planes and maximal intensity projections (MIPs) were evaluated for fibula lengths, anatomical branching pattern, arterial stenoses and fibular perforator positions in both legs (n=198). Normal branching patterns were observed in 168 (85.3%) legs. Twenty-nine (14.7%) legs presented abnormal branching patterns. Once (0.5%) the anterior, 19 times (9.6%) the posterior tibial artery were absent or hypoplastic. Nine (4.6%) lower legs presented an arteria peronea magna. Average length of the tibiofibular trunk (TFT) was 3.3±0.15cm. A total of 492 perforators were found with an average of 2.5 (±0.82±0.99) perforators per leg. A mapping of perforator run-offs was illustrated true to scale. Lower limb stenoses were distributed in the anterior tibial artery (14.1%), in the posterior tibial artery (11.1%) and in the fibular artery (8.1%). Smoking (P=0.828), diabetes (P=0.727) and peripheral arterial occlusive disease (P=0.172) did not correlate with presence of stenoses. Preoperative lower limb angiography avoids postoperative complications. MRA reliably and non-invasively identifies anatomical variants and arterial stenoses without radiation. Illustration of perforator run-offs enhances incision planning for fibula harvest.

The Anterolateral Thigh-Medial Femoral Condyle Chimeric Flow-through Flap for Posttraumatic Wrist Arthrodesis

Wrist arthrodesis in the setting of segmental bone loss can have high failure rates. Therefore, vascularized bone grafting has been advocated for select patients. Patients suffering concomitant large soft tissue loss present even greater challenge. To that end, we describe for the first time successful anterolateral thigh-medial femoral condyle chimeric flow-through flap for posttraumatic wrist arthrodesis and soft tissue coverage. This is a case report of a 19-year-old male laborer who suffered a large blast injury resulting in significant bone and soft tissue injury to the dominant right hand and wrist. After multiple debridements, there was a segmental bone defect from the distal radius and ulna to the metacarpal bases, as well as a 12×8 cm dorsal soft tissue defect. This was reconstructed with a anterolateral thigh-medial femoral condyle chimeric flow-through flap and concomitant wrist arthrodesis in a single stage. Besides a donor site thigh seroma, recovery was uneventful with clinical and radiographic evidence of fusion by >9 weeks postoperation.

A computed tomography study of the fibula: morphology, morphometry, intramedullary anatomy, application prospects on intramedullary nailing

PURPOSE

The intramedullary percutaneous pinning in fractures of the lateral malleolus is a technique of osteosynthesis that can reduce complications of ORIF. Our study describes the morphology and the morphometry of the fibula, in particular intramedullary, so as to specify the best fibular nail features.

METHODS

We conducted a retrospective study on CT acquisitions of fibulae in vivo. We studied total length, and the distal malleolar angle. Regarding intramedullary morphology, six axial study levels were defined. Each level was assigned a morphometric classification (oval, triangular, quadrangular or irregular), and a measure of the diameter of the cavity. The distance between the smaller diameter and the malleolar tip was investigated.

RESULTS

We included 50 patients for 97 fibulae. The average age was 66.5 years. The irregular morphology type was the most frequently found. The average length was 370.5 mm (SD = 18.1; CI 95% [366.9; 374.1]), the average distal malleolar angle was 163.5° (SD = 3.7; CI 95% [162.7; 164.2]). The average minimal intramedullary diameter at malleolus level was 3.2 mm (SD = 1.2; CI 95% [3.0; 3.5]), with a minimum size reaching 95.8 mm (SD = 13.8; CI 95% [93.0; 98.5]) of the malleolar tip.

CONCLUSIONS

The analysis of morphological parameters of the fibula, in particular the lateral malleolus and intramedullary morphology is necessary for the design of a morpho-adapted nail. Interpersonal variability must be taken into account by the implant industry to offer nails of suited lengths and diameters.

Oromandibular reconstruction using microvascularized bone flap: report of 1038 cases from a single institution

This retrospective study was performed to review 1038 patients who underwent mandibular reconstruction with free vascularized bone flaps at a single institution between 2006 and 2017. Of these patients, 827 (79.67%) had fibula flaps, 197 (18.98%) had deep circumflex iliac artery perforator (DCIA) flaps, and 11 (1.06%) had scapula bone flaps. The most common pathological diagnosis was ameloblastoma (n=366, 35.26%), followed by squamous cell carcinoma (n=278, 26.78%) and osteoradionecrosis (n=152, 14.64%). Fifty-seven patients (5.49%) had major complications requiring surgical intervention and one patient died of a pulmonary embolism. Venous crisis was the most frequent major complication (n=20, 1.93%), followed by haematoma (n=17, 1.64%) and flap necrosis (n=14, 1.35%). One-stage mandibular reconstruction was preferred whenever possible, as this generally decreases the financial and hospitalization burden. The four-segment method of jaw reconstruction appeared to achieve good aesthetic appearance results in Asian patients and this was not associated with a higher risk of segment ischemia compared with the three-segment method.

Computer-assisted resection and reconstruction of bilateral osteoradionecrosis of the mandible using 2 separate flaps prepared from a single fibula

OBJECTIVES

Osteoradionecrosis of the mandible is a late radiation-induced complication, which is a major concern in survivors of head and neck cancer.

STUDY DESIGN

In this study, we present a case of a patient with nasopharyngeal carcinoma who developed extensive bilateral osteoradionecrosis of the ascending ramus of the mandible. After preoperative virtual surgical planning, the obtained data were used to fabricate patient-specific cutting templates. The bilateral mandibular defects were reconstructed using 2 separate flaps prepared from a single fibula.

RESULTS

Both defects were successfully reconstructed, and satisfactory aesthetic and functional results were achieved.

CONCLUSIONS

Bilateral mandibular osteoradionecrosis can be managed with virtual surgical planning, and the defects can be reconstructed using 2 separate flaps prepared from a single fibula.

Fibular osteofasciocutaneous flap in computer-assisted mandibular reconstruction: technical aspects in oral malignancies

Virtual surgical planning technology in head and neck surgery is witnessing strong growth. In the literature, the validity of the method from the point of view of accuracy and clinical utility has been widely documented, especially for bone modelling. To date, however, with its increased use in head and neck oncology, and consequently the increased need for bone and soft tissue reconstruction, is important to carry out the virtual programme considering not only bone reconstruction but also all aspects related to the reconstruction of soft tissue using composite flaps. We describe our approach to virtual planning in the case of composite flaps. The study reports six consecutive patients with malignant disease requiring mandibular bone and soft tissue reconstruction using fibular osteocutaneous flaps. In all six patients, the resection and reconstruction were planned virtually focusing on the position of cutaneous perforator vessels in order to schedule fibula cutting guides. There were no complications in all six cases. The technique described allowed us to schedule composite fibula flaps in mandibular reconstruction virtually with good accuracy of the position of the bone segment in relation to the cutaneous paddle, important for soft tissue reconstruction. Despite the limited number of cases, the preliminary results of the study suggest that this protocol is useful in virtual programmes using composite flaps in mandibular reconstruction. Further investigations are needed.

Perforators of the fibular artery and suprafascial network

INTRODUCTION

Soft tissue defect on lower limb can result in an intractable wound. Surgeons resort in flaps to cover these injuries. Including fascia as in the case of a fasciocutaneous flap increases survey of the flap. Rising a perforator flap avoids to sacrifice a major vessel whence the nourishing perforator artery is born. We wanted to explore suprafascial distribution of the fibular skin perforator arteries supposing possible to find out a vascular axis composed of anastomoses of the fibular perforator vessels.

MATERIALS AND METHODS

Systematic observation was carried out on ten injected legs about the fibular perforator distribution, and especially their suprafascial course.

RESULTS

Dissection allowed us to raise in all specimens a large fasciocutaneous paddle including a fine arteriolar vessel connecting fibular perforators. Perforators were isolated along from the leg and we found suprafascial arteriole connecting all perforators from the fibular head to the lateral malleolus. There were a total number of 126 perforators for 10 legs. The mean length of the fibula was 32.9 cm. No perforator was located at more than 2 cm from fibular posterior border. Proximal perforators were closer to posterior fibular side than distal perforators. We found that fibular perforators clustered in the middle and upper third of the leg.

CONCLUSION

This study proves the real existence of a microvascular suprafascial axis formed by fibular perforator anastomoses and stretching over the entire length of the fibula, from the fibular head to the distal tip of the lateral malleolus. This suprafascial vascular axis could be an anatomical basis for a fasciocutaneous fibular flap.