Long Term Results of Epiphyseal Transplant in Distal Radius Reconstruction in Children.

BACKGROUND: Replacement of osseous defect, restoration of joint function, and restoration of longitudinal growth are the 3 main reconstructive issues that need to be addressed when the physis and epiphysis are damaged in a skeletally immature individual. Failure in achieving these objectives leads to severe deformity and functional impairment, which significantly compromises the quality of life of young patients. Because of its biological and morphological characteristics, the proximal fibula epiphyseal transfer has proven to be an excellent option in limb salvage surgery in pediatric oncologic cases meeting all the reconstructive requirements. METHODS: Between 1992-2006, 8 children with a mean age of 7.3 years (range 4-11 years old) diagnosed with malignant bone tumor of the distal radius underwent tumor resection and immediate microsurgical reconstruction of the distal part of the radius with vascularized proximal fibular transfer, which included the physis and a variable length of the diaphysis. The anterior tibial vascular network supplied all of the grafts. One patient died to lung metastasis, 3.5 years after surgery; a second patient was lost at follow-up. The remaining 6 patients were periodically followed up both clinically, measuring range of motion, grip strength and the sensation of the hand, and by means of standard x rays, bone scan and CT scan. RESULTS: The mean follow-up was 13.2 years (range, 8-22 years). All the transfers survived and underwent fusion at the recipient site. In our experience the fibular growth expected after the transplant, ranges between 0.7 and 1.4 cm per year. In this series growth arrest occurred in only one patient after trauma. Serial radiographs and CT scans revealed progressive remodeling over time of the new articular surface. The functional result was rated as excellent in all but the one patient, in whom the distal portion of the ulna had to be resected because of tumor invasion. No major complication occurred at the recipient site. Peroneal nerve palsy occurred at the or site in 3 patients. The palsy was transient in 2 patients, but it persisted in one. No instability of the knee joint was observed. CONCLUSIONS: Our long-term results confirm that a vascularized transfer of the proximal fibula provides a reliable and durable reconstruction of the distal radius in children. Even after 22 years, the reconstructed joint resulted to be free of pain and degenerative changes thus maintaining a nearly normal range of motion. The described procedure is therefore highly recommended in case of distal radius reconstruction in growing children.

Gastrocnaemius-propeller extended miocutanous flap: a new chimaeric flap for soft tissue reconstruction of the knee.

PURPOSE: Soft tissue defects involving the anterior aspect of the knee are a frequent finding in a number of pathological conditions. The aim of this article is to describe a new pedicled flap consisting of a conventional medial gastrocnaemius muscle flap associated with a propeller flap based on a perforator of the medial sural artery. MATERIAL AND METHODS: Five males ranging in age between 26 and 72 years underwent a reconstruction of the soft tissue of the knee by means of the described procedure. Three patients sustained complex tissue loss subsequent to high-energy trauma; two losses were due to septic complications after elective knee surgery. RESULTS: Four flaps survived allowing adequate proximal tibial metaphysis and patella coverage. One patient underwent early above-the-knee amputation due to life-threatening septicaemia. DISCUSSION: The described chimaera flap consists of a medial gastrocnaemius flap with a skin paddle that is elevated on a perforator of the medial sural artery and then rotated according to the propeller flaps' principles. It provides effective coverage of large soft tissue defects of the knee. In the authors' experience, the propeller flap portion proved to be particularly useful to cover the patella, while the muscle flap was used to cover the proximal metaphysis of the tibia and fill the dead space if present.

Local perforator flaps in soft tissue reconstruction of the upper limb.

The quality of reconstruction of soft tissue defects in the upper extremity, resulting either from traumatic injury or tumor excision, has relevant implications both from functional and aesthetic standpoints. Various local and free flaps with more or less consistent donor-site morbidity have been described in the past. The recent introduction of the perforator-based flap concept, has led to an evolution in upper extremity reconstruction, optimizing results at the recipient site whilst minimizing damage to the donor site and, performing this in the simplest way possible. In this study between 2001 and 2008, 31 patients having post-traumatic or post-tumor excision soft tissue defects of the upper limb, were treated using local perforator flaps raised according to two different modalities: "pedicled fasciocutaneous" and "transposition fasciocutaneous/cutaneous". Complete and stable coverage of the soft tissue losses was obtained in all cases with an inconspicuous, only aesthetic, donor-site defect. Superficial or partial necrosis of the tip of the flap, due to venous congestion, was observed in 2 cases of "pedicled fasciocutaneous flap". An additional surgical procedure was required in only one of these cases. In our series all 9 patients who had a transposition flap, underwent routinely a preoperative echo color Doppler investigation to identify the main perforators. In only one case did the Doppler investigation fail to accurately locate the perforator. Local perforator flaps allow the coverage of medium size defects in the upper extremity, can be raised with a relatively simple surgical technique, have a high success rate and good aesthetic results without functional impairment. In the light of this they can be considered among the surgical choices to resurface complex soft tissue defects of the upper extremity. Preoperative identification of the perforators in case of "transposition flaps" greatly facilitates the operation. In our experience echo color Doppler investigations provided reliable results.