• Archives of Reconstructive Microsurgery
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• v.16 no.2
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• pp.108-112
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• 2007

The general treatment methods of chronic osteomyelitis of calcaneus with soft tissue defect was curettage of necrotic bone with antibiotics mixed bone cement insertion or cancellous bone grafting, and free or pedicled flap coverage. The muscle flap for soft tissue defect has many advantages including control of infection, but in cases of pedicled flap in calcaneus, there are some limitations because of functional loss of the donor site, limitation of pedicled length of donor muscle In these reason, free muscle flap was more preferred for pedicled muscle flap. But, in case of small sized defect which was located in center or lateral side of calcaneus, the abductor digiti minimi muscle flap can be one of the solutions. The abductor digiti minimi muscle flap has minimal functional loss of donor site and can be performed easily. There are some reports of the abductor digiti minimi muscle flap in other country, but in korea, this report is the first case report of the abductor digiti minimi muscle flap. We performed one case of abductor digiti minimi muscle flap as a treatment of chronic osteomyelitis of calcaneus and could obtain a good result.

• Archives of Craniofacial Surgery
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• v.20 no.1
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• pp.37-43
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• 2019

Background: Tongue reconstruction is challenging with the unique function and anatomy. Goals for reconstruction differ depending on the extent of reconstruction. Thin and pliable flaps are useful for tongue tip reconstruction, for appearance and mobility. This study reports lateral arm free flap (LAFF) as a safe and optimal option for hemi-tongue reconstruction, especially for tongue tip after hemiglossectomy. Methods: Thirteen LAFFs were performed for hemi-tongue reconstruction after hemiglossectomy from 1995 to 2018. Of the 13 patients, seven were male and six were female, age varying from 24 to 64 years. Results: All flaps healed uneventfully without complications. Donor sites were closed primarily. The recipient vessels for microvascular anastomosis were mainly superior thyroidal artery, external jugular vein. All patients returned to normal diet, with no complaints regarding reconstructed tongue and donor site. Conclusion: The LAFF is hairless, thin (especially with lateral epicondyle approach), and potentially sensate. They are advantageous features for tongue tip and hemi-tongue reconstruction. Donor site sacrifices the inessential posterior radial collateral artery, and the scar is hidden under short sleeve shirts. We believe that LAFF can be considered as the first choice flap for hemitongue reconstruction, over radial forearm free flaps.

• Archives of Plastic Surgery
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• v.44 no.4
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• pp.332-336
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• 2017

Background Little is known concerning hair diameter variation within the safe donor area for hair transplantation surgery. Thicker or thinner hair may be needed, depending on the recipient area, hairline design, and the purpose of surgery. Methods Twenty-seven patients (7 men and 20 women; mean age, 28 years; range, 20-47 years) were included in this study. The midoccipital point was used as the reference point on the horizontal plane at the upper border of the helical rim. The target area width was 15 cm (7.5 cm to the right and left of the reference point) and the height was 8 cm (2 cm above and 6 cm below the reference point). The study area was divided horizontally into 3 5-cm sections (A, B, C) and vertically into 4 2-cm sections (1-4), creating a total of 12 zones. Ten anagen hairs were randomly obtained from each zone and their diameters were measured. Results Hair diameter in the 4 vertical sections varied significantly, gradually decreasing from sections 1 (superior) to 4 (inferior) in all 3 horizontal sections (A, B, and C). Conclusions Our results suggest that sections 1 and 2 of the occipital safe donor area would be useful for obtaining thicker hair, such as in procedures to treat male- and female-pattern hair loss, whereas hair from zones 3 and 4 could be useful for transplantation surgery requiring thinner hair, such as eyebrows, eyelashes, and female hairline correction. Our results may be clinically valuable for planning hair transplant surgery and choosing the optimal donor region.

• BMB Reports
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• v.35 no.5
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• pp.513-517
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• 2002

We describe a new method for identifying the sequences that signal the start of translation, and the boundaries between exons and introns (donor and acceptor sites) in human mRNA. According to the mandatory keyword, ORGANISM, and feature key, CDS, a large set of standard data for each signal site was extracted from the ASCII flat file, gbpri.seq, in the GenBank release 108.0. This was used to generate the scoring matrices, which summarize the sequence information for each signal site. The scoring matrices take into account the independent nucleotide frequencies between adjacent bases in each position within the signal site regions, and the relative weight on each nucleotide in proportion to their probabilities in the known signal sites. Using a scoring scheme that is based on the nucleotide scoring matrices, the method has great sensitivity and specificity when used to locate signals in uncharacterized human genomic DNA. These matrices are especially effective at distinguishing true and false sites.

• Archives of Plastic Surgery
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• v.32 no.3
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• pp.271-280
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• 2005

There are various types of flap in head and neck reconstruction. We chose the appropriate flap considering the indication and patient's condition. In case of conventional flaps, its type is decided according to the reconstruction site. In other words, the types of considerable flaps are limited in a way. But, perforator flaps can reduce donor limitation and harvest flaps depending on the condition of the recipient. Therefore, the flap is very useful for the head and neck reconstruction needed for 2-dimensional or 3-dimensional reconstruction. We report the 29 cases of perforator-based flap including 8 cases of latissimus dorsi perforator free flap, 5 thoracodorsal perforator free flap, 4 anterolateral thigh perforator free flap, 3 peroneal osteocutaneous perforator free flap and 9 submental perforator island flap for the head and neck reconstruction. Free flaps include 2 cases of chimeric pattern, 7 controlled resurfacing pattern, 4 3-D pattern, 3 dermoadiposal pattern, 1 folded pattern and 3 osteocutaneous pattern. The flaps were successfully used for the head and neck reconstruction. But one patient died during a follow up period because of the recurrence of tumor. Various perforator flaps(island/free pattern) can be highly competitive to the conventional flaps in the head and neck reconstruction, considering a thin character for resurfacing, more flexible and versatile option, variable composition, long pedicle with donor structures saved, and less prominent donor morbidity.

• Restorative Dentistry and Endodontics
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• v.38 no.1
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• pp.48-51
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• 2013

The autogenous tooth transplantation is an alternative treatment replacing a missing tooth when a suitable donor tooth is available. It is also a successful treatment option to save significant amount of time and cost comparing implants or conventional prosthetics. These cases, which required single tooth extraction due to deep caries and severe periodontal disease, could have good results by transplanting non-functional but sound donor tooth to the extraction site.

• Archives of Reconstructive Microsurgery
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• v.9 no.2
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• pp.154-157
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• 2000

Author report a case of double metatarso-phalangeal joint transplantation to the elbow joint in the 31 years old female patient who have large bone defect associated with skin and soft tissue defect. The donor joints were second and third metatarso-phalangeal joint as double joint transfer fashion to enhance stability of graft. The graft based on dorsalis pedis vessel to anastomosed with radial artery of recipient site. The result is unsatisfactory because of long lasting lateral instability of reconstructed elbow joint in spite of 40 degree flexion motion and fair axial stability. We can conclude that joints from foot can not be an effective donor for biologic joint arthroplasty of elbow joint even though double metatarso-phalangeal joint were harvested.

• Archives of Reconstructive Microsurgery
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• v.19 no.1
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• pp.68-79
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• 2010

Lower abdominal tissue is regarded as an ideal donor site for the breast reconstruction because it provides large skin territory and huge amount of soft tissues enough to the breast size. However it is not easy for the surgeon to reconstruct the really natural breast, and needs the learning curve with long time experience. Author represent the various reconstruction procedures for the breast using lower abdominal tissue such as muscle sparing free TRAM, DIEP, and SIEA free flaps to reinsure like breast. Indications, and selection of reconstructive methods, surgical timing, selection of donor sites and recipient vessel of these flaps were reviewed. In addition, detailed procedures, surgical tips and secondary adjuvant procedures are described for more symmetry of reconstructed breast. The muscle sparing free TRAM, DIEP, and SIEA free flaps would be enough to provide supple, huge amount of well vascularized tissue for the breast, if these flaps were selected for the appropriate indication according to patient's general condition, obesity, the opposite breast and abdominal tissue condition. Lower abdominal tissue was able to provide versatile designs with sufficient adipose tissue without compromising the integrity of abdominal wall.

• Bulletin of the Korean Chemical Society
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• v.26 no.10
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• pp.1505-1511
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• 2005

The excitation energy transfer process occurring in energy donor-acceptor linked porphyrin array system is theoretically simulated using the on-the-fly filtered propagator path integral method. The compound consists of an energy donating meso-meso linked Zn(II) porphyrin array and an energy accepting 5,15-bisphenylethynylated Zn(II) porphyrin, in which the donor array and the acceptor are linked via a 1,4-phenylene spacer. Real-time path integral simulations provide time-evolution of the site population and the excitation energy transfer rate constants are determined. Simulations and experiments show an excellent agreement indicating that the path integration is a useful tool to investigate the energy transfer dynamics in molecular assemblies.

• Archives of Plastic Surgery
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• v.50 no.1
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• pp.82-95
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• 2023

Upper extremity reconstruction may pose clinical challenges for surgeons due to the often-critical, complex functional demands of the damaged and/or missing structures. The advent of vascularized bone grafts (VBGs) has aided in reconstruction of upper extremity (UE) defects due to their superior regenerative properties compared with nonvascularized bone grafts, ability to reconstruct large bony defects, and multiple donor site options. VBGs may be pedicled or free transfers and have the potential for composite tissue transfers when bone and soft tissue are needed. This article provides a comprehensive up-to-date review of VBGs, the commonly reported donor sites, and their indications for the treatment of specific UE defects.