Zeki Can

viability of Diced, Crushed Cartilage Grafts and the Effects of Surgicel (oxidized Regenerated Cellulose) on Cartilage Grafts

The viability of cartilage grafts has been well documented; however, controversy still exists about the viability of crushed cartilage. Recently, there has been a tendency to use diced cartilage grafts wrapped with oxidized regenerated cellulose (Surgicel) sheets for improving dorsal contour in rhinoplasty. The viability of diced cartilage grafts and the effect of Surgicel on cartilage grafts are not well known. In this study, we used ear cartilage from 18 New Zealand rabbits. Cartilage grafts were transplanted to surgically created subcutaneous pockets on the back of the rabbits on both the left and right sides. There were three groups: (1) intact cartilage grafts, (2) crushed cartilage grafts, and (3) diced cartilage grafts. The grafts that were transplanted to the right side were wrapped with Surgicel. Cartilage grafts in all groups were viable. In grafts that were wrapped with Surgicel, a marked increase in the collagen content was investigated. Grafts that were wrapped with Surgicel demonstrated no evidence of proliferation, whereas the bare cartilage grafts demonstrated significant amounts of proliferation.

Pilomatrixoma of the earlobe.

BACKGROUND Pilomatrixoma most commonly occurs in the head and neck region, appearing primarily in the first two decades of life. The lesion is described as a tumor with differentiation toward hair cells and surgical excision is the treatment of choice. OBJECTIVE We report an uncommon localization of a perforating type pilomatrixorna of 5 × 4 × 4 cm in size that developed from the earlobe. METHODS Histopathological examination revealed pilomatrixorna. Total resection of the tumor was performed. The earlobe was reconstructed by forming a posterior‐superior pedicled skin flap. RESULTS No recurrence was observed and a good cosmetic result was obtained. CONCLUSION Local recurrence does not generally occur if the tumor is completely removed. The case we present is of interest in having a history of trauma to the region and a relatively rapid growth with perforation of the overlying skin.

Effect of chronic and short-term erythropoietin treatment on random flap survival in rats: an experimental study.

Objective The use of perioperative erythropoietin (EPO) therapy is gaining popularity to avoid blood transfusion and correct anemia in head and neck cancer surgery. The purpose of the study was to determine the effect of various doses and durations of EPO treatment on random flap survival.

Hatchet-shaped tensor fascia lata musculocutaneous flap for the coverage of trochanteric pressure sores: a new modification.

The tensor fascia lata flap is one of the appropriate choices for the coverage of trochanteric pressure sores. The authors designed a new, hatched-shaped tensor fascia lata musculocutaneous flap with distal Z-plasty closure and applied it to four trochanteric defects in 4 patients. Satisfactory results were obtained in all patients. The hatchet-shaped tensor fascia lata musculocutaneous flap is very safe, reliable, and practical. Designing the flap in a hatchet shape allows one to use the proximal and well-vascularized portion of the flap in the trochanteric pressure sore area. Another important advantage is the possibility of reuse resulting from recurrence. Prevention of a “dog-ear” deformity at the recipient site provides a smooth contour on the lateral aspect of the thigh. Another advantage is the tension-free Z-plasty closure of the donor site without need of grafting.

TISSUE ENGINEERING OF HIGH DENSITY POROUS POLYETHYLENE IMPLANT FOR THREE-DIMENSIONAL RECONSTRUCTION: AN EXPERIMENTAL STUDY

Three-dimensional defects have been reconstructed with carved and remodelled frameworks wrapped within vascular carriers. If sufficient vascular penetration can be established without any change in the size and shape of an implant, it will be possible to cover it with a skin graft and aesthetically important fine details can be obtained. To achieve this, we first prefabricated high-density porous polyethylene implant in rabbits. Secondly, we applied full-thickness skin grafts over the anterior surface of the prefabricated implant. The implants were placed and anchored underneath the superficial inferior epigastric artery and vein pedicle bilaterally. A total of 10 implants were prefabricated and then grafted in five rabbits. The implants were evaluated by perfusion scintigraphy and histological examination. Results showed that the implants were invaded by fibroneovascular tissue, and that this tissue, which can be transferred as a pedicled or a free flap, was sufficient to sustain a skin graft.Three-dimensional defects have been reconstructed with carved and remodelled frameworks wrapped within vascular carriers. If sufficient vascular penetration can be established without any change in the size and shape of an implant, it will be possible to cover it with a skin graft and aesthetically important fine details can be obtained. To achieve this, we first prefabricated high-density porous polyethylene implant in rabbits. Secondly, we applied full-thickness skin grafts over the anterior surface of the prefabricated implant. The implants were placed and anchored underneath the superficial inferior epigastric artery and vein pedicle bilaterally. A total of 10 implants were prefabricated and then grafted in five rabbits. The implants were evaluated by perfusion scintigraphy and histological examination. Results showed that the implants were invaded by fibroneo-vascular tissue, and that this tissue, which can be transferred as a pedicled or a free flap, was sufficient to sustain a skin graft.

Sarcoma developing in a burn scar: case report and review of the literature

The development of malignancy in burn scars is a well known entity. However, burn scar sarcomas are rarely seen. This report presents the first case of a leiomyosarcoma arising in a burn scar of scalp in the English literature.

Prefabrication of a high-density porous polyethylene implant using a vascular induction technique.

Three-dimensional defects have been reconstructed with carved and remodeled frameworks wrapped within vascular carriers and have wide use in ear and nose reconstruction. The main problem with thick coverings is masking of the fine details in the frameworks. Other problems are insufficient blood supply, infection, and exposure of the implant. If sufficient vascular penetration can be established without any change in size and shape of the implant, it will be possible to cover it with a thin skin graft and improve aesthetic results. In this study we planned to prefabricate a high-density porous polyethylene implant that has been used frequently. The implants were placed and anchored underneath the superficial inferior epigastric artery and vein pedicle bilaterally in 10 adult New Zealand White rabbits. Twenty implants were prefabricated in this procedure, and they were evaluated via histological examination and perfusion scintigraphy. Results revealed that the implants were invaded by fibroneovascular tissue. Blood supply coming from the vascular pedicle was sufficient to maintain the implant as a prefabricated composite flap, which could be transferred as a pedicled flap or a free flap.Can Z, Apaydin I, Erçöçen A, Demirseren M, Sabuncuoglu B. Prefabrication of a high-density porus polyethylene implant using a vascular induction technique.

Reappraisal of Island modifications of lateral calcaneal artery skin flap

Reconstruction of soft-tissue defects of the calcaneal region and the heel is very demanding and necessitates, as a rule, a sensate and thin flap. The ideal characteristics of a sensate and thin layer of flap should be combined with a reliable blood supply and minimal morbidity at the donor site. The authors report an updated review of their experience with the use of island modifications of the lateral calcaneal artery skin flap—the lateral calcaneal island flap, the lateral calcaneal V-Y advancement flap, and the bilobed-shaped lateral calcaneal island advancement flap—for the reconstruction of small and medium-sized tissue defects over the exposed calcaneal tendons and calcaneal bones of 18 patients. All of the procedures were performed under spinal or epidural anesthesia. There were no problems associated with flap viability, but the authors have seen necrosis of undermined skin between the lateral malleolus and calcaneal tendon in two cases and a partial loss of skin graft in one case. In this article, the authors discuss some advantages and disadvantages of the use of a lateral calcaneal island flap and its modifications.

A RARE CRANİOFACİAL CLEFT: TESSIER NO. 7: A RETROSPECTIVE ANALYSIS

SUMMARY In this report we present a retrospective analysis of our craniofacial cleft cases, classified as Tessier no. 7.

Malignant triton tumor of the maxilla : A patient report

Malignant Triton tumor (or malignant schwannoma with rhabdomyoblastic differentiation) is a rare entity with a very poor prognosis. This is the second report of this type of rare and aggressive sarcoma arising in the maxilla. The clinical course, therapeutic approach, and histopathological aspects of the case are presented.