Use of free microvascular flaps in the management of the head and neck defects

Outcome Assessment after Reconstruction of Tumor-Related Mandibular Defects Using Free Vascularized Fibular Flap-A Clinical Study

The objective of this study was to analyze the outcomes of the free vascularized fibular flap in the reconstruction of mandibular defects, and to assess the oral health impact profile of these patients before surgery and after oral rehabilitation. Patients requiring reconstruction of defects greater than 6 cm were selected for this study. The defect size and type, the size of the required skin paddle, the need for second flaps, the intraoperative complications, and the type of closure were documented. Patients were evaluated postoperatively for function, aesthetics, and donor- or reconstruction-site complications. The validated oral health impact profile (OHIP-14) questionnaires were filled before and after surgery and after dental rehabilitation. This study included 11 cases of squamous-cell carcinomas, 2 cases of malignant nerve sheath tumors, and 1 case each of malignant melanoma, ameloblastoma, giant-cell tumor, osteosarcoma, and chondrosarcoma. The analysis revealed a significant association (p = 0.030) of gender with free vascular flap complications, while no significant association (p > 0.05) was found when donor- and recipient- site complications, as well as the type of resection (Brown’s classification), were compared with free vascular flaps. Moreover, the total OHIP-14 scores for patients before surgery, after surgery, and after dental rehabilitation were 12.03 ± 1.34, 10.66 ± 1.41, and 08.33 ± 0.62, respectively. The oral health-related quality of life was markedly improved after the reconstruction of the mandibular defects with free vascularized fibular flap and dental rehabilitation. The overall success rate of fibular flap in our study was 72.2%, which is lower than that reported in the literature. This may be attributed to the fact that almost all of our cases included large segmental defects that extended across the midline of the mandible.

Somatosensory changes at forearm donor sites following three different surgical flap techniques

BACKGROUND

The aim of this study was to investigate the somatosensory changes at the forearm donor region after using different types of modified flap surgical techniques.

METHODS

Thirty-one patients, who underwent oral and maxillofacial reconstructive surgery involving the use of a traditional radial forearm flap (TRFF) or two modified radial forearm flap techniques (MRFF-I; MRFF-II), participated in the study. Cold detection threshold (CDT), warm detection threshold (WDT), cold pain threshold (CPT), heat pain threshold (HPT), pressure pain threshold (PPT), mechanical detection threshold (MDT), and mechanical pain threshold (MPT) were assessed at four sites of the forearms corresponding to the middle of the vascular pedicle (VP) area, the middle of the forearm flap area, and the corresponding contralateral sites (cVP and cFF) at about 5.0 ± 1.9 months after the surgery. Data were analysed with one-way ANOVA, and post-hoc tests were performed using Tukey's Honest Significant Difference test.

RESULTS

Significant differences between the VP and cVP sites were detected for WDT (P < 0.001) in TRFF and for WDT (P < 0.001) and MDT (P = 0.006) in MRFF-I. Significant differences among TRFF, MRFF-I, and MRFF-II at the VP site were detected for CDT (P = 0.022), WDT (P < 0.001), and MDT (P = 0.015). MRFF-II was associated with significantly higher sensitivity compared to that of TRFF for WDT (P = 0.017) and higher sensitivity compared to that of MRFF-I for CDT (P = 0.017), WDT (P < 0.001), and MDT (P = 0.013).

CONCLUSIONS

Significant sensory loss was detected for all types of surgical procedures with free forearm flaps. However, the MRFF-II was associated with a better sensory recovery at short follow-up after surgery. These results suggest that a longer follow-up period and larger sample size should be included in future studies.

[Application of radial forearm free flap in extraoral soft tissue head and neck reconstruction]

BACKGROUND/AIM

Radial forearm free flap, highly regarded in head and neck reconstructive surgery, is known to be one of the most reliable and versatile flaps. The aim of this study was to illustrate the versatility and reliability of a radial forearm flap in reconstruction of a variety of extraoral head and neck defects.

METHODS

During a period 2001-2007 at the Clinic for Maxillofacial Surgery, Faculty of Dentistry and the Center for Burns, Plastic and Reconstructive Surgery in Belgrade, 19 patients underwent microsurgical reconstructions after extraoral tumor ablation in the head and neck region, using fasciocutaneous radial forearm free flap.

RESULTS

The overall flap survival rate was 89.5%. The complications that appeared were one partial necrosis and one venous thrombosis that in spite of reanastomosis resulted in a complete flap failure. The donor site healed uneventfully in all patients, except one, who had a partial skin graft failure, that ended in a secondary skin grafting.

CONCLUSION

For reconstruction in head and neck surgery, with the need for thin, pliable tissues and a long vascular pedicle, radial forearm flap still remains a primary choice. Because of their multiple advantages, free flaps from the radial forearm is a safe method for reconstruction of a variety of extensive extraoral soft tissue defects in the head and neck region.