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https://www.readbyqxmd.com/read/28226371/nasal-reconstruction-involving-multiple-subunit-defects
#1
Artemus Cox, Matthew Fort
The challenges of nasal reconstruction are readily apparent to any surgeon who has undertaken this task. Defects involving multiple subunits of the nose usually require adjacent tissue transferred to the wound typically in the form of a forehead flap or other local flaps. Herein, we describe current thought on the subunit principle and the application of local flaps and grafts in reconstructing larger superficial defects of the nose. Primary attention is paid to analysis and patient counseling.
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226370/osseous-and-cartilaginous-nasal-reconstruction
#2
Samuel Hahn
The nose is a complex, three-dimensional structure that is supported by a framework of osseous and cartilaginous structures. Disruption of this framework can result in nasal deformity and functional deficits. Nasal reconstruction requires restoration of the osseous and cartilaginous framework. This requires careful preoperative assessment of the nasal defect and understanding the nasal and facial aesthetics that are supported by the osseous and cartilaginous support structures. Structural grafts can be classified as restorative, supportive, or contouring...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28220264/treatment-of-stage-ii-medication-related-osteonecrosis-of-the-jaw-with-necrosectomy-and-autologous-bone-marrow-mesenchymal-stem-cells
#3
Pit Jacob Voss, Akihiko Matsumoto, Esteban Alvarado, Rainer Schmelzeisen, Fabian Duttenhöfer, Philipp Poxleitner
Treatment strategies for medication-related osteonecrosis of the jaw (MRONJ) remain controversial. Although the AAOMS suggests a conservative approach, a surgical management with necrosectomy is often required when conservative management has failed. Moreover, recent studies have shown promising results using an early stage surgical treatment. Over the past decade, cell-based bone regeneration utilizing bone marrow mesenchymal stem cells (MSCs) received increased attention. MSCs are known to promote wound healing and induce new bone formation in compromised tissue...
February 20, 2017: Odontology
https://www.readbyqxmd.com/read/28220260/three-stage-treatment-protocol-for-recalcitrant-distal-femoral-nonunion
#4
Ching-Hou Ma, Yen-Chun Chiu, Yuan-Kun Tu, Cheng-Yo Yen, Chin-Hsien Wu
INTRODUCTION: In this study, we proposed a three-stage treatment protocol for recalcitrant distal femoral nonunion and aimed to analyze the clinical results. MATERIALS AND METHODS: We retrospective reviewed 12 consecutive patients with recalcitrant distal femoral nonunion undergoing our three-stage treatment protocol from January 2010 to December 2014 in our institute. The three-stage treatment protocol comprised debridement of the nonunion site, lengthening to eliminate leg length discrepancy, deformity correction, stabilization with a locked plate, filling of the defect with cement spacer for inducing membrane formation, and bone reconstruction using a cancellous bone autograft (Masquelet technique) or free vascularized fibular bone graft...
February 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28219143/-influence-of-collagen-fibroin-scaffolds-containing-silver-nanoparticles-on-dermal-regeneration-of-full-thickness-skin-defect-wound-in-rat
#5
Z G You, L P Zhang, X G Wang, H L Zhou, S X Guo, P Wu, C M Han
Objective: To explore the influence of collagen/fibroin scaffolds containing silver nanoparticles on dermal regeneration of full-thickness skin defect wound in rat. Methods: Eighty-one collagen/fibroin scaffolds containing silver nanoparticles (with the mass concentration of silver nanoparticles as 10 mg/L) and 81 collagen/fibroin scaffolds without silver nanoparticles were produced respectively with freeze-drying method and enrolled as silver nanoparticles scaffold group (SNS) and control scaffold group (CS)...
February 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28219139/-outcome-of-relaying-anterolateral-thigh-perforator-flap-in-resurfacing-the-donor-site-wound-following-free-anteromedial-thigh-perforator-flap-transfer-for-reconstruction-of-defect-after-oral-tumor-radical-resection
#6
D J Song, Z Li, X Zhou, Y X Zhang, X W Peng, B Zhou, C L Lyu, L C Yang, W Peng
Objective: To observe the outcome of relaying anterolateral thigh (ALT) perforator flap in resurfacing the donor site wound following free anteromedial thigh (AMT) perforator flap transfer for reconstruction of defect after oral tumor radical resection. Methods: From January 2013 to January 2016, 28 patients with oral tumor underwent radical resection in our hospital, leaving defects with size ranged from 6.5 cm×3.5 cm to 11.0 cm×7.5 cm which were reconstructed by free AMT perforator flaps with size ranged from 7...
February 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28216682/use-of-canine-sourced-platelet-rich-plasma-in-a-feline-contaminated-cutaneous-wound
#7
Francesco Gemignani, Anna Perazzi, Ilaria Iacopetti
A 4-year-old neutered female domestic shorthaired cat was treated with canine sourced platelet-rich plasma at the Veterinary Hospital at University of Padua for a large skin defect on the left lateral neck region. The wound healed completely within 20 days and no adverse reaction was observed during the healing process.
February 2017: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
https://www.readbyqxmd.com/read/28207787/hyaluronic-acid-synthesis-is-required-for-zebrafish-tail-fin-regeneration
#8
Xiaohu Ouyang, Nicholas J Panetta, Maya D Talbott, Alexander Y Payumo, Caroline Halluin, Michael T Longaker, James K Chen
Using genome-wide transcriptional profiling and whole-mount expression analyses of zebrafish larvae, we have identified hyaluronan synthase 3 (has3) as an upregulated gene during caudal fin regeneration. has3 expression is induced in the wound epithelium within hours after tail amputation, and its onset and maintenance requires fibroblast growth factor, phosphoinositide 3-kinase, and transforming growth factor-ß signaling. Inhibition of hyaluronic acid (HA) synthesis by the small molecule 4-methylumbelliferone (4-MU) impairs tail regeneration in zebrafish larvae by preventing injury-induced cell proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28207463/implantation-of-thickened-artificial-bone-for-reduction-of-dead-space-and-prevention-of-infection-between-implant-and-dura-in-secondary-reconstruction-of-the-skull
#9
Mine Ozaki, Keigo Narita, Masakazu Kurita, Yuki Iwashina, Akihiko Takushima, Kiyonori Harii
For the treatment of skull defect compensation after neurosurgery, a customized artificial bone is often employed owing to its toughness and the relative ease of producing cosmetically good result. However, implants are vulnerable to infection and removal of implant is sometimes necessary. Several other treatment options such as autologous bone graft or free flap are likely to be considered for the secondary reconstruction to avoid reinfection; however, reimplantation of artificial bone is beneficial for the patients, being not concerned with donor site morbidity...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28203523/glutathione-peroxidase-4-plays-an-important-role-in-oxidative-homeostasis-and-wound-repair-in-corneal-epithelial-cells
#10
Osamu Sakai, Takatoshi Uchida, Hirotaka Imai, Takashi Ueta
Oxidative stress is involved in the pathologies of corneal epithelial cells. However, the importance of specific antioxidant enzymes in corneal epithelial cells is not fully understood. The purpose of this study is to elucidate the role of glutathione peroxidase 4 (GPx4) in corneal epithelial cells. For in vitro experiments, an immortalized human corneal epithelial cell line was used. Cytotoxicity measured through LDH activity, lipid peroxidation immunostained for 4-hydroxynonenal, cell viability, and cell death were compared between cells transfected with either GPx4 siRNA or scrambled control siRNA...
December 2016: FEBS Open Bio
https://www.readbyqxmd.com/read/28203511/a-retrospective-look-at-integrating-a-novel-regenerative-medicine-approach-in-plastic-limb-reconstruction
#11
Edgardo R Rodriguez Collazo, Christopher R Rathbone, Brian R Barnes
Full-thickness wounds that have rendered patients candidates for amputation may require techniques that may include a combinatorial approach above traditional standard of care. The purpose of this retrospective study was to evaluate the effectiveness of an innovative approach whereby several therapies were combined to avoid amputation. Patients with full-thickness wounds who were previously recommended for amputation and were treated with the combinatorial approach of muscle flap reconstruction and concentrated bone marrow aspirate, platelet-rich plasma, INTEGRA Wound matrix, vacuum-assisted closure, and split-thickness skin grafts were assessed retrospectively...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28199294/flow-induced-microvascular-network-formation-of-therapeutic-relevant-arteriovenous-av-loop-based-constructs-in-response-to-ionizing-radiation
#12
Volker J Schmidt, Jennifer M Covi, Christoph Koepple, Johannes G Hilgert, Elias Polykandriotis, Amir K Bigdeli, Luitpold V Distel, Raymund E Horch, Ulrich Kneser
BACKGROUND The arteriovenous (AV) loop model enables axial vascularization to gain a functional microcirculatory system in tissue engineering constructs in vivo. These constructs might replace surgical flaps for the treatment of complex wounds in the future. Today, free flaps are often exposed to high-dose radiation after defect coverage, according to guideline-oriented treatment plans. Vascular response of AV loop-based constructs has not been evaluated after radiation, although it is of particular importance...
February 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28197297/reconstruction-of-an-anterior-cervical-necrotizing-fasciitis-defect-using-a-biodegradable-polyurethane-dermal-substitute
#13
Marcus Jd Wagstaff, Yugesh Caplash, John E Greenwood
Introduction: Although we have previously described the use of a novel polyurethane biodegradable dermal substitute in the reconstruction of 20 free flap donor sites, and extensive cutaneous defects, including a large area of exposed calvarium secondary to burn injury, our experience with this material now extends to 35 free flap donor site reconstructions and 13 major or complex burns. Methods: The polyurethane material (NovoSorb BTM; PolyNovo Biomaterials Pty Ltd, Port Melbourne, Victoria, Australia) was recently employed in another complex wound scenario, implanted into a large anterior cervical cutaneous and soft-tissue defect remaining after serial radical debridement for necrotizing fasciitis...
2017: Eplasty
https://www.readbyqxmd.com/read/28197296/an-innovative-solution-to-complex-inguinal-defect-deepithelialized-siea-flap-with-mini-abdominoplasty
#14
Augustine Reid Wilson, Justin Daggett, Michael Harrington, Deniz Dayicioglu
Introduction: We describe a novel technique of contralateral pedicled deepithelialized superficial inferior epigastric artery flaps, followed by abdominal advancement coverage, as an alternative treatment of radiated complicated inguinal or lower abdominal defects, avoiding the donor-site defect typically seen with other methods of coverage. Methods: Two male patients with histories of liposarcoma after excision and radiation to one side of lower abdomen/inguinal area presented with complicated wounds that were reconstructed with this technique...
2017: Eplasty
https://www.readbyqxmd.com/read/28196368/pericardio-amniotic-shunting-for-incomplete-pentalogy-of-cantrell
#15
Alexander C Engels, Anne Debeer, Francesca M Russo, Michael Aertsen, Katleen Aerts, Marc Miserez, Jan Deprest, Liesbeth Lewi, Roland Devlieger
A 27-year-old woman, gravida 2, para 0, presented with an incomplete Pentalogy of Cantrell with an omphalocele, diaphragmatic hernia, and a pericardial defect at 32 weeks' gestation. A large pericardial effusion compressed the lungs and had led to a reduced lung growth with an observed-to-expected total lung volume of 28% as measured by MRI. The effusion disappeared completely after the insertion of a pericardio-amniotic shunt at 33 weeks. After birth, the newborn showed no signs of pulmonary hypoplasia and underwent a surgical correction of the defect...
February 15, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28196163/entire-papilla-preservation-technique-a-novel-surgical-approach-for-regenerative-treatment-of-deep-and-wide-intrabony-defects
#16
Serhat Aslan, Nurcan Buduneli, Pierpaolo Cortellini
Primary wound closure and uneventful early wound stability over the biomaterials are the most critical elements of successful periodontal regeneration. Yet the surgical elevation of the interdental papilla to access deep and wide intrabony defects entails an impairment of the papillary blood supply that can result in difficult healing due to a lack of primary closure in the early healing period. This negative event might complicate the healing process, favoring bacterial contamination. A novel modified tunnel surgical technique designed to maintain the integrity of the interdental papilla is presented in this article, with the aim of providing an optimal environment for wound healing in regenerative procedures...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28195894/breast-reconstruction-using-pedicled-latissimus-dorsi-myocutaneous-flaps-in-asian-patients-with-small-breasts
#17
I-Han Chiang, Chih-Hsin Wang, Yuan-Sheng Tzeng, Hao-Yu Chiao, Chang-Yi Chou, Chi-Yu Wang, Tim-Mo Chen, Shyi-Gen Chen
BACKGROUND: The use of implants is still the most common procedure for breast reconstruction because they are easy, less painful than tissue transplants, and do not need a donor site. However, it is challenging to find a suitable implant for patients with small breasts, and some women fear foreign bodies and possible complications or reoperations. Autologous breast reconstruction using the pedicled latissimus dorsi (LD) myocutaneous flap without an implant provides a good option for Asian women with small breasts...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28195893/functional-outcomes-and-complications-of-robot-assisted-free-flap-oropharyngeal-reconstruction
#18
Yueh-Chi Tsai, Shih-An Liu, Chih-Sheng Lai, Yen-Wei Chen, Chen-Te Lu, Jung-Hsing Yen, I-Chen Chen
BACKGROUND: Robotic surgical systems provide a clear, magnified 3-dimensional visualization as well as precise, stable instrumental movement, thereby minimizing technical difficulties that may be encountered in the surgical treatment of oropharyngeal tumors. This study assessed the outcomes of robotic-assisted free flap oropharyngeal reconstruction compared with those of conventional free flap reconstruction. MATERIALS AND METHODS: A retrospective review of 47 patients who underwent reconstructive operations using a free radial forearm fasciocutaneous flap for oropharyngeal defects was conducted over a 20-month period (May 2013-December 2014)...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28194796/the-utility-of-the-musculocutaneous-anterolateral-thigh-flap-in-pharyngolaryngeal-reconstruction-in-the-high-risk-patient
#19
Adrian S H Ooi, Chad M Teven, Amir Inbal, David W Chang
BACKGROUND AND OBJECTIVES: Prior radiotherapy leads to increased wound complication rates for microsurgical reconstruction of pharyngolaryngeal (PL) defects. Incorporating vastus lateralis muscle together with anterolateral thigh flap (ALT) skin in defect reconstruction is useful in protecting vital structures and reinforcing irradiated neck skin and suture lines. This study shows the utility of the musculocutaneous ALT (MC ALT) in PL reconstruction in previously irradiated patients. METHODS: A single-surgeon, retrospective chart review of all patients with defects of the PL region where an MC ALT was used for reconstruction from February 2014 to May 2016...
February 14, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28194520/simple-and-safe-technique-for-closure-of-midline-abdominal-wound-dehiscence
#20
M H Abo-Ryia
PURPOSE: The aim of this study was to assess an alternative technique for closure of burst abdomen. METHOD: After reduction of the viscera and toilet of abdominal cavity with debridement of any necrotic tissues in the skin or fascia, the skin was undermined to expose the aponeurosis all-around the defect edges for at least 5-6 cm. The greater omentum is spread in the floor of the wound and fixed to the inner side of the defect. A piece of polypropylene mesh designed according to the size and shape of the defect and sutured to its external edge continuously...
February 13, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
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