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Vascular reconstruction

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https://www.readbyqxmd.com/read/28805947/penile-neurovascular-structure-revisited-immunohistochemical-studies-with-three-dimensional-reconstruction
#1
G N Yin, S-H Park, M-J Choi, A Limanjaya, K Ghatak, N N Minh, J Ock, K-M Song, J-K Ryu, J-K Suh
Penile erection is a neurovascular phenomenon that requires well coordinated and functional interaction between penile vascular and nervous systems. In order to provide a useful tool to examine pathologic changes in the erectile tissue, mainly focusing on penile neurovascular dysfunction, we established the technique to determine the differential distribution of endothelial cells, smooth muscle cells, pericytes, and nerve fibers in the mouse penis using immunohistochemical staining with three-dimensional reconstruction...
August 14, 2017: Andrology
https://www.readbyqxmd.com/read/28805772/-diagnosis-and-treatment-of-extracranial-internal-carotid-artery-lesion-combined-with-cerebrovascular-malformation
#2
A I Khripun, A D Pryamikov, A B Mironkov, S A Asratyan, I N Tyurin, V S Suryakhin, M V Abashin, V P Mikhaylenko
AIM: To analyze own experience of diagnosis and treatment of patients with extracranial internal carotid artery lesion and cerebrovascular malformations. MATERIAL AND METHODS: There were 16 patients with combined lesion of extracranial and intracranial internal carotid artery for the period January 2013 - December 2014. Occlusive-stenotic lesion and tortuosity of ICA were observed in 11 and 5 cases respectively. RESULTS: Incidence of combined ICA lesion was 5...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28804740/avascular-necrosis-of-the-humeral-head-following-bilateral-upper-extremity-vascular-composite-allotransplantation-a-case-report
#3
Jacob Rinkinen, David Molway, Matthew Carty, George S M Dyer, Bohdan Pomahac, Anil Chandraker, Simon G Talbot
Vascularised composite allotransplantation (VCA) represents an exciting and emerging field in plastic and reconstructive surgery. Despite the generally good functional and psychosocial outcomes, multiple complications can be associated with the procedure. The authors describe a case of avascular necrosis of the humeral head following successful upper extremity VCA.
2017: Case Reports in Plastic Surgery & Hand Surgery
https://www.readbyqxmd.com/read/28802886/-lumbar-artery-perforator-flap-for-breast-reconstruction
#4
J-F Honart, N Leymarie, B Sarfati, H Alknashnam, K Rem, F Rimareix, F Kolb
Even though DIEP-SIEA flaps or latissimus dorsi musculocutaneous flap are the most frequently used, a wide variety of flaps have been described for autologous breast reconstruction. Concerning the choice of donor-site, the aim is to prevent and to limit the morbidity. That is why the donor-site should be carefully chosen, according to the morphology of the patient. Lumbar artery perforator flap (LAP) is an option for breast reconstruction, but it is not well known and its use is limited. This study summarizes the authors' early experience with free LAP flap for breast reconstruction...
August 9, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28801079/re-raising-muscle-flaps-a-randomised-controlled-animal-study
#5
K Bradshaw, M Wagels
BACKGROUND: In the experience of our centre, 33% of reconstructed compound lower limb injuries will need an orthopaedic revision.(1) A flap may be re-raised through numerous methods, and historically, the approach of choice has been based on the principle of protecting the vascular pedicle rather than the inset. Our aim was to determine whether a marginal versus a split approach to re-raising inferred a higher risk of flap necrosis and whether more attention should be paid to protecting the inset of the flap, particularly at the distal portion...
July 18, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28799442/the-use-of-innervated-radial-artery-superficial-palmar-branch-perforator-free-flap-for-complex-digital-injuries-reconstruction
#6
Zhenglin Chi, Georgios Pafitanis, Luis Eduardo Parra Pont, Roshan Vijayan, Stefano Marcelli, Weiyang Gao, Zan Li, Xiao Zhou, Dajiang Song, Peng Yang
Loco-regional flaps have been widely used for the reconstruction of digital injuries without requiring microvascular anastomosis, however, they result in scarring and compromised functional outcomes. This study demonstrates our experience utilizing the innervated radial artery superficial palmar branch (RASPB) perforator free flap for complex digital injury reconstruction. From May 2007 to March 2014, the innervated RASPB perforator free flap was used to reconstruct 79 distal complex hand and digital soft tissue defects of which 14 were used to re-vascularise the distal digit in a flow-through fashion...
August 11, 2017: Journal of Plastic Surgery and Hand Surgery
https://www.readbyqxmd.com/read/28798870/histopathological-and-imageological-studies-on-clinical-outcomes-of-mineralized-collagen-reconstruction-rod-for-femoral-head-necrosis-with-one-case-report
#7
Baogang Xie, Hao Wang, Jianhua Hao, Ping Wang, Na Zhang, Jingjing Wu, Zhiye Qiu, Fuzhai Cui
In this article, the biodegradation process and bone formation of a mineralized collagen reconstruction rod embedding in necrosis of human femoral head were investigated by imageological and histological methods. Computed radiography (CR) computerized tomography (CT), common pathological section and hard tissue section analysis were used to evaluated the dynamics of imageological and histopathological changes of femoral head, interface between the host bone and implant and the bone reconstruction process. The results showed that the density of rods increased closed to that of host bones after 1 year implanting, and the interface between them turns to blurring...
August 2017: Regenerative Biomaterials
https://www.readbyqxmd.com/read/28796101/use-of-the-ipsilateral-anteromedial-thigh-flap-for-immediate-rescue-of-nonviable-anterolateral-thigh-flaps-in-head-and-neck-cancer-reconstruction
#8
Hsu-Tang Cheng, Jin-Yi Tian, Yung-Chang Hsu, Hsin-Han Chen, Sophia Chia-Ning Chang
BACKGROUND: It is not always possible to use the anatomically variable free anterolateral thigh (ALT) flap for reconstructive surgery. An anteromedial thigh (AMT) flap serves as a good alternative, and shares the same vascular pedicle as the ALT flap. METHODS: Of 698 reconstructions performed in 2006 to 2013 following head and neck tumor ablation surgery, ALT flaps were used in 653 patients. Eighteen free AMT flaps were harvested to replace variant nonviable ALT flaps...
August 8, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28796099/radiotherapy-and-smoking-history-are-significant-independent-predictors-for-osteosynthesis-associated-late-complications-in-vascular-free-fibula-reconstruction-of-mandible
#9
YiMing Chen, JiaLing Wu, Sandhya Gokavarapu, Qingcheng Shen, Tong Ji
BACKGROUND: The vascular fibula flap is an ideal choice for function and appearance reconstruction of mandible. Despite the high success rate, "late complications" such as Ti plate exposure and local infection related to osteosynthesis are not uncommon. PATIENTS AND METHOD: A retrospective cohort of patients who received vascular fibula reconstruction for mandible from January 2011 to December 2013 from the Department of Oral and Maxillofacial Oncology in a tertiary hospital were charted: clinical, pathological, and therapeutic factors were analyzed for late complications in univariate and multivariate analyses...
August 8, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28792972/three-dimensional-ultrastructural-study-of-the-anther-of-silene-latifolia-infected-with-microbotryum-lychnidis-dioicae
#10
Hiroki Kawamoto, Aiko Hirata, Shigeyuki Kawano
When Microbotryum lychnidis-dioicae infects a male Silene latifolia, M. lychnidis-dioicae smut spores develop in the pollen sac instead of pollen. In contrast, when M. lychnidis-dioicae infects a female S. latifolia, the female flowers become male-like, promoting stamen formation. However, it is unclear when and how M. lychnidis-dioicae invades the anther. It is important to investigate not only whether hyphae exist when the apical meristem tissue differentiates into flowers and anthers, but also whether hyphae exist when stamen filaments form...
2017: PloS One
https://www.readbyqxmd.com/read/28792625/the-effect-of-full-dose-composite-tissue-allotransplantation-immunosuppression-on-allograft-motor-nerve-regeneration-in-a-rat-sciatic-nerve-model
#11
Jong Pil Kim, Caroline A Hundepool, Patricia F Friedrich, Steven L Moran, Allen T Bishop, Alexander Y Shin
BACKGROUND: The purpose of this study was to identify which triple immunosuppressive protocols, currently used for vascularized composite allotransplantation in the clinic, will have the best effect on motor function recovery following nerve allograft reconstruction. METHODS: Eighty-eight Lewis rats underwent a 1-cm sciatic nerve allograft transplantation and skin graft from 44 Brown-Norway rats. Group I received 0.9% isotonic saline (control); Group II, 2 mg/kg FK506; Group III, 1 mg/kg FK506 with 15 mg/kg mycophenolate mofetil (MMF); and Group IV, 2 mg/kg FK506 with 30 mg/kg MMF and prednisone...
August 9, 2017: Microsurgery
https://www.readbyqxmd.com/read/28791756/pulmonary-vasculature-in-dogs-assessed-by-three-dimensional-fractal-analysis-and-chemometrics
#12
Anna V Müller, Clara B Marschner, Annemarie T Kristensen, Bo Wiinberg, Amy F Sato, Jose M A Rubio, Fintan J McEvoy
Fractal analysis of canine pulmonary vessels could allow quantification of their space-filling properties. Aims of this prospective, analytical, cross-sectional study were to describe methods for reconstructing three dimensional pulmonary arterial vascular trees from computed tomographic pulmonary angiogram, applying fractal analyses of these vascular trees in dogs with and without diseases that are known to predispose to thromboembolism, and testing the hypothesis that diseased dogs would have a different fractal dimension than healthy dogs...
August 8, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28790474/possible-vascular-injury-due-to-screw-eccentricity-in-minimally-invasive-total-hip-arthroplasty
#13
Nishant Kumar Singh, Sanjay Kumar Rai, Amit Rastogi
BACKGROUND: Vascular injury during minimally invasive total hip arthroplasty (THA) is uncommon, yet a well-recognized and serious issue. It emerges because of non-visibility of vascular structures proximal to the pelvic bone during reaming, drilling holes, and fixing of screws. Numerous studies have found that screw fixation during cementless THA is beneficial for the initial stability of cup; yet, no anatomical guidelines support angular eccentric screw fixation. MATERIALS AND METHODS: In this study, we obtained the pelvic arterial-phase computed tomographic data of thirty eight humans and reconstructed the three-dimensional models of osseous and vessel structures...
July 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28790213/-surgical-treatment-of-cervical-carotid-artery-aneurysm
#14
Ryo Hamasaki, Toshiharu Yanagisawa, Yusuke Takahashi, Hiroaki Shimizu
Cervical carotid aneurysms are rare, and surgical treatment should be planned for each patient. The authors report 9 cases of cervical carotid aneurysm in 9 patients(mean age, 53.7 years;5 men)who were treated surgically between 2005 and 2014. The aneurysm was located in the internal carotid artery in 6 patients, the common carotid artery in 2 patients, and the carotid bifurcation in 1 patient. Four aneurysms were recurrences after a previous endovascular intervention(parent artery coil embolization, covered stent placement, or stent with coil embolization)...
August 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28782831/customized-degradable-functionally-graded-scaffold-for-potential-treatment-of-early-stage-osteonecrosis-of-the-femoral-head
#15
Toshiyuki Kawai, Yaser Shanjani, Saba Fazeli, Anthony W Behn, Yaichiro Okuzu, Stuart B Goodman, Yunzhi P Yang
Osteonecrosis of the femoral head (ONFH) is a debilitating disease that results in progressive collapse of the femoral head and subsequent degenerative arthritis. Few treatments provide both sufficient mechanical support and biological cues for regeneration of bone and vascularity when the femoral head is still round and therefore salvageable. We designed and 3D printed a functionally-graded scaffold (FGS) made of polycaprolactone (PCL) and β-tricalcium phosphate (β-TCP) with spatially controlled porosity, degradation and mechanical strength properties to reconstruct necrotic bone tissue in the femoral head...
August 7, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28776087/efficacy-of-in-vivo-electroporation-mediated-il-10-gene-delivery-on-survival-of-skin-flaps
#16
S Morteza Seyed Jafari, Maziar Shafighi, Helmut Beltraminelli, Benedikt Weber, Ralph A Schmid, Thomas Geiser, Amiq Gazdhar, Robert E Hunger
Despite advances in understanding the underlying mechanisms of flap necrosis and improvement in surgical techniques, skin flap necrosis after reconstructive surgery remains a crucial issue. We investigated the efficacy of electroporation-mediated IL-10 gene transfer to random skin flap with an aim to accelerate wound healing and improve skin flap survival. Nine male Wistar rats (300-330 g) were divided in two groups (a) control group (n = 5), only surgery no gene transfer, and (b) experimental group, received electroporation-mediated IL-10 gene transfer 24 h before the surgery as prophylaxis (n = 4)...
August 3, 2017: Journal of Membrane Biology
https://www.readbyqxmd.com/read/28774250/vascularized-spare-parts-reconstruction-of-hand-gunshot-injury
#17
Nathan Patrick, Alexander Payatakes
Reconstruction of extensive traumatic bone and soft tissue deficits in the hand often presents a significant challenge. We present a case of a gunshot wound managed with a resourceful "vascularized spare parts" reconstruction in which a single compromised digit provided two separate vascularized tissue transfers. A rarely reported pedicled phalanx restored osseous stability, a digital fillet flap achieved soft tissue coverage, and the flexor tendons reanimated the hand. An excellent functional and cosmetic result was obtained and the patient was able to return to manual labor within six months of injury...
September 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28769083/human-adipose-derived-mesenchymal-stem-cells-seeded-into-a-collagen-hydroxyapatite-scaffold-promote-bone-augmentation-after-implantation-in-the-mouse
#18
Giovanna Calabrese, Raffaella Giuffrida, Stefano Forte, Claudia Fabbi, Elisa Figallo, Lucia Salvatorelli, Lorenzo Memeo, Rosalba Parenti, Massimo Gulisano, Rosario Gulino
Traumatic injury or surgical excision of diseased bone tissue usually require the reconstruction of large bone defects unable to heal spontaneously, especially in older individuals. This is a big challenge requiring the development of biomaterials mimicking the bone structure and capable of inducing the right commitment of cells seeded within the scaffold. In particular, given their properties and large availability, the human adipose-derived stem cells are considered as the better candidate for autologous cell transplantation...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28767568/three-dimensional-virtual-planning-in-precise-chimeric-fibula-free-flap-for-metacarpal-defects-a-case-report
#19
Hui Shen, Xiang-Qian Shen, Ying Lv, Hui Lu, Jing-Hong Xu, Shou-Cheng Wu
RATIONALE: Metacarpal and phalanx defects with soft tissue loss were suggested to be reconstructed by vascularized bone flap. The fibular osteocutaneous flap is a preferred method. Three-dimensional virtual planning has successfully applied in mandibular reconstruction with fibular free flap. We applied three-dimensional virtual planning in precise fibula flap harvest to maintain the continuity of the fibula and to achieve accurate metacarpal and phalanx reconstruction. PATIENT CONCERNS: A 35-year-old male presented with extensive soft tissue defects and first metacarpal defect involving the first metacarpophalangeal joint...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28767176/sequential-chimeric-medial-femoral-condyle-and-anterolateral-thigh-flow-through-flaps-for-one-stage-reconstructions-of-composite-bone-and-soft-tissue-defects-report-of-three-cases
#20
Dominic Henn, Mohamed H Abouarab, Christoph Hirche, Jochen F Hernekamp, Volker J Schmidt, Ulrich Kneser, Thomas Kremer
Small recalcitrant non-unions with poor perfusion require reconstruction with vascularized bone flaps. Cases with concomitant large soft tissue defects are especially challenging, since vascularized soft tissue transfer is often indicated and distant microvascular anastomoses may be required. We introduce a sequential chimeric free flap composed of a medial femoral condyle corticoperiosteal flap anastomosed to an anterolateral thigh flow-through flap (MFC-ALT flap) and report its use for reconstruction of small non-unions with concomitant large soft tissue defects in three exemplary patients...
August 2, 2017: Microsurgery
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