Reconstrucción biológica de grandes defectos óseos con autoinjerto de peroné vascularizado en huesos largos / Biological reconstruction of large bone defects with vascularized fibular autograft

Introducción: El autoinjerto vascular de peroné se presenta como una muy buena opción en la reconstrucción de grandes defectos óseos en huesos largos gracias a sus características estructurales y propiedades biológicas. Materiales y Métodos: Se realizó un estudio observacional descriptivo y retrospectivo que incluyó a todos los pacientes operados con un injerto vascular de peroné aislado o asociado a injerto estructural (técnica de Capanna) desde el 1 de enero de 2014 hasta el 1 de enero de 2021 en nuestro hospital. Resultados: Se realizaron 26 cirugías mediante un injerto vascular de peroné; en 8 de ellas, se utilizó el colgajo vascularizado de peroné para la reconstrucción del defecto óseo en hueso largo. El tamaño medio del defecto era de 7,7 cm. El origen del defecto era postraumático en 5 casos y tumoral en el resto. Se consiguió la consolidación completa en todos los pacientes. Los resultados clínicos y funcionales en las escalas de valoración fueron mejores en pacientes operados en el miembro inferior. Conclusiones: El uso de un colgajo vascularizado de peroné asociado o no a aloinjerto estructural es una estrategia útil en la reconstrucción de grandes defectos óseos (≥5 cm), independientemente de la causa de la lesión; la supervivencia del injerto y la función son buenas, con una tasa de complicaciones aceptable. Nivel de Evidencia: IV

Background: Given its biological and structural qualities, vascular fibular autograft is a good option for the reconstruction of large defects in long bones. Materials and Methods: A descriptive and retrospective observational study was conducted. We included all cases of patients who underwent surgery in our hospital between January 1, 2014, and January 1, 2021, and who had a vascular fibula autograft either standalone or in combination with a structural graft (Capanna technique). Results:There were 26 documented vascular fibula autograft procedures. Eight of the procedures involved the reconstruction of a long bone defect. The bone defect was an average of 7.7 cm in length. In five of the cases, the origin of the bone defect was post-traumatic, and in the remaining cases, it was tumoral. In all cases, complete consolidation was achieved. Surgical procedures performed on the lower extremities yielded better clinical and functional outcomes. Conclusions:Vascular fibula autograft either on its own or in combination with a structural graft, as described in the Capanna technique, is an excellent alternative for the reconstruction of bone defects ≥ 5 cm. Radiological, clinical and functional outcomes are good, with an acceptable rate of complications. Level of Evidence: IV

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.

Dermal melanocytosis of the scalp associated to intracranial melanoma: malignant blue nevus, neurocutaneous melanosis, or neurocristic cutaneous hamartoma?

Intracranial invasion of cellular blue nevus is extremely rare, and its malignant transformation is even less common. The differential diagnosis includes neurocutaneous melanosis and neurocristic cutaneous hamartoma. A 50-year-old female presented with intracranial melanoma in contiguity with a congenital blue nevus on the scalp. The patient showed a wide pigmented lesion on the scalp that had grown in the last few years over the congenital blue nevus. Magnetic resonance imaging revealed an intracranial tumor lying contiguous to the nevus. Despite aggressive surgery, the tumor relapsed and the patient developed systemic metastases. We report a rare case of cellular blue nevus showing an unexpected aggressive behavior with extensive extra- and intracranial expansion and distant metastases.