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https://www.readbyqxmd.com/read/28915281/precision-in-dermal-filling-a-comparison-between-needle-and-cannula-when-using-soft-tissue-fillers
#1
Tatjana Pavicic, Konstantin Frank, Katharina Erlbacher, Romy Neuner, Stefan Targosinski, Thilo Schenck, Robert H Gotkin, Sebastian Cotofana
BACKGROUND: Precise implantation of soft tissue fillers to treat the signs of aging is crucial for patient safety and the best aesthetic outcome. Injections are performed commonly with either needles or cannulas, but quantitative comparative data on precise implantation are still elusive. METHODS: Ten fresh-frozen cephalic foreheads (9 male, 1 female) were injected with radiopaque material using both needles and cannulas. Needle injection relied on a perpendicular transcutaneous approach, whereas cannulas were moved in the supra-periosteal plane until reaching the same location as the needle...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28913291/immediate-near-total-scalp-reconstruction-with-artificial-dermis-on-exposed-calvarium
#2
Sooyeon Park, Ki Taik Han, Min Cheol Kim, Jin Soo Lim
Scalp defect management is complicated secondary to reduced laxity in the scalp and forehead area. For reconstruction of larger defects with exposed bone and loss of the periosteal layer, free flap reconstruction is one option for single-stage surgery, although the procedure is lengthy and includes the possibility of flap loss. We successfully performed a single-stage reconstruction of a large scalp defect using a combination of artificial dermis, split-thickness skin graft, and full-thickness skin graft following wide excision of a cutaneous angiosarcoma, and present our method as one option for the treatment of large oncologic surgical defects in patients who are poor candidates for free flap surgery...
December 2016: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28911959/histological-changes-in-the-periosteum-following-subperiosteal-expansion-in-rabbit-scalp
#3
Mohamad Taghi Kiani, Nasrin Takzare, Ahad Khoshzaban, Elahe Jalilianfar, Leila Aghajanpour, Reza Tabrizi
PURPOSE: In intraoral bone grafting, tension-free coverage of the recipient site with periosteal flap results in optimal wound closure. Tissue expansion could be a suitable modality to obtain soft tissue in the oral cavity. The aim of this study was to assess the histology of the periosteum after subperiosteal expansion in the rabbit scalp. MATERIALS AND METHODS: In this animal study, 6 rectangular tissue expanders were placed in the skulls of 6 male white New Zealand rabbits; in 6 control rabbits, an incision was made to the periosteum but no expansion was performed...
August 31, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28910363/impaired-bone-formation-in-ovariectomized-mice-reduces-implant-integration-as-indicated-by-longitudinal-in-vivo-micro-computed-tomography
#4
Zihui Li, Gisela Kuhn, Michael Schirmer, Ralph Müller, Davide Ruffoni
Although osteoporotic bone, with low bone mass and deteriorated bone architecture, provides a less favorable mechanical environment than healthy bone for implant fixation, there is no general agreement on the impact of osteoporosis on peri-implant bone (re)modeling, which is ultimately responsible for the long term stability of the bone-implant system. Here, we inserted an implant in a mouse model mimicking estrogen deficiency-induced bone loss and we monitored with longitudinal in vivo micro-computed tomography the spatio-temporal changes in bone (re)modeling and architecture, considering the separate contributions of trabecular, endocortical and periosteal surfaces...
2017: PloS One
https://www.readbyqxmd.com/read/28906587/vascularized-thumb-metacarpal-periosteal-pedicled-flap-for-scaphoid-nonunion-an-anatomical-study-and-pediatric-case-report
#5
Sergi Barrera-Ochoa, Gerardo Mendez-Sanchez, Alfonso Rodriguez-Baeza, Jorge Knörr, Jayme Augusto Bertelli, Francisco Soldado
PURPOSE: Through an anatomical review, the primary aim of this study was to delineate the dorsal thumb metacarpal (TM) periosteal branches of the radial artery (RA). In addition, we report here the clinical utility of a vascularized TM periosteal pedicled flap (VTMPF), supplied by the first dorsal metacarpal artery (FDMA), in a complex case of scaphoid nonunion. METHODS: Ten latex-colored upper limbs from fresh human cadavers were used. Branches of the RA were dissected under 3x loupe magnification, noting the periosteal branches arising from the FDMA...
September 14, 2017: Microsurgery
https://www.readbyqxmd.com/read/28891043/treamed-locked-intramedullary-nailing-for-studying-femur-fracture-and-its-complications
#6
O Yoshino, J Brady, K Young, B Hardy, R Matthys, T Buxton, R Appleyard, J Tomka, D Dabirrahmani, P Woodford, M Fadia, R Steck, A Quail, R G Richards, Z J Balogh
Morbidity associated with femur fractures in polytrauma patients is known to be high. The many unsolved clinical questions include the immunological effect of the fracture and its fixation, timing of fracture fixation, management of fracture non-union, effect of infection and critical size of bone defects. The aim of this study was to establish a clinically-relevant and reproducible animal model with regards to histological, biomechanical and radiological changes during bone healing. A custom-designed intramedullary nail with interlocking system (RabbitNail, RISystem AG, Davos Platz, Switzerland) was used for fixation, following femur fracture...
September 11, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28888393/hypertrophic-osteoarthropathy-in-a-young-adult-male-from-berber-sudan-2nd-3rd-century-ce
#7
M Binder, M Saad
Hypertrophic osteoarthropathy (HOA) is a pathological condition characterised by extensive periosteal new bone formation (NBF) on the diaphyses of the long bones, metacarpal and metatarsal bones. In modern clinical contexts, the secondary form of the disease is common and most often occurs secondary to intra-thoracic cancer and other forms of chronic pulmonary disease. Paleopathological evidence for HOA on the other hand has only occasionally been reported. Here we report a young adult male from the Meriotic cemetery at Berber in Sudan (2nd-3rd century CE) displaying widespread NBF on the diaphyses of the upper and lower limb bones, metacarpal and metatarsal bones, as well as the pelvis and scapulae...
September 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28888055/evaluation-of-loading-parameters-for-murine-axial-tibial-loading-stimulating-cortical-bone-formation-while-reducing-loading-duration
#8
David Sun, Michael D Brodt, Heather M Zannit, Nilsson Holguin, Matthew J Silva
Classic studies in bone mechanobiology have established the importance of loading parameters on the anabolic response. Most of these early studies were done using loading methods not currently in favor, and using non-murine species. Our objective was to re-examine the effects of several loading parameters on the response of cortical bone using the contemporary murine axial tibial compression model. We subjected tibias of 5-month old, female C57Bl/6 mice to cyclic (4 Hz) mechanical loading and examined bone formation responses using dynamic and static histomorphometry...
September 9, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28885355/secondary-hypertrophic-osteoarthropathy-caused-by-non-pleural-or-pulmonary-tumors
#9
Hans-Jonas Meyer, Leonard Leifels, Andreas Gunter Bach, Alexey Surov
Hypertrophic osteoarthropathy (HOA) is a rare paraneoplastic syndrome characterized by digital clubbing, periosteal reaction, polyarthralgia, arthritis, and synovitis. Herein, we report a case series of patients with secondary HOA caused by non-pleural or pulmonary tumors.The radiologic databases of 2 tertiary university hospitals were retrospectively screened for secondary HOA patients. In addition, a systemic review of the published case reports. Only HOA cases with non-pleural or pulmonary malignancies were involved into the study...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28884881/effects-of-a-randomized-weight-loss-intervention-trial-in-obese-adolescents-on-tibia-and-radius-bone-geometry-and-volumetric-density
#10
Jennifer C Kelley, Nicolas Stettler-Davis, Mary B Leonard, Douglas Hill, Brian H Wrotniak, Justine Shults, Virginia A Stallings, Robert Berkowitz, Melissa S Xanthopoulos, Elizabeth Prout-Parks, Sarah B Klieger, Babette S Zemel
Obese adolescents have increased fracture risk, but effects of alterations in adiposity on bone accrual and strength in obese adolescents are not understood. We evaluated 12-month changes in trabecular and cortical volumetric bone mineral density (vBMD) and cortical geometry in obese adolescents undergoing a randomized weight management program, and investigated the effect of body composition changes on bone outcomes. Peripheral quantitative CT of the radius and tibia, and whole body DXA scans were obtained at baseline, six and 12 months in 91 obese adolescents randomized to standard care versus behavioral intervention for weight loss...
September 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28882601/extradural-resection-of-the-anterior-clinoid-process-how-i-do-it
#11
L Troude, F Bernard, G Bauchet, S De La Rosa Morilla, P H Roche
BACKGROUND: The anterior clinoid process shares a close relationship with the optic canal, the internal carotid artery, the superior orbital fissure and the cavernous sinus. These structures may be involved in diseases whose surgical exposure requires prior clinoid process resection. METHOD: Based on operative cases we describe the different steps of this surgical technique and illustrate our surgical procedure with a video. Dividing the orbito-temporal periosteal fold is a key-step in order to optimize the elevation of the periosteal dural layer at the level of the superior orbital fissure to expose the contours of the anterior clinoid process...
September 4, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28866833/voriconazole-induced-periostitis-deformans-serial-imaging-in-a-patient-with-anca-vasculitis
#12
S Cormican, N Adams, P O'Connell, A McErlean, D de Freitas
OBJECTIVES: A 61-year-old with acute granulomatosis and polyangiitis developed Aspergillus fumigatus pneumonia after admission to the intensive care unit with a small bowel perforation. This occurred after immunosuppression (intravenous methylprednisolone, intravenous cyclophosphamide, and plasmapheresis) for his initial presentation with stage 3 acute kidney injury. MATERIALS AND METHODS: The mycologist recommended long-term treatment with voriconazole after initial recovery...
September 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28861729/a-preliminary-randomized-clinical-trial-comparing-diode-laser-and-scalpel-periosteal-incision-during-implant-surgery-impact-on-postoperative-morbidity-and-implant-survival
#13
Aysan Shahnaz, Raika Jamali, Farnush Mohammadi, Afshin Khorsand, Neda Moslemi, Reza Fekrazad
The aim of this preliminary randomized clinical trial was to compare: (1) post-operative morbidity after application of laser or scalpel incision for flap advancement during implant surgery and bone grafting and (2) implant survival rate following flap advancement with laser or scalpel incision after 6 months of loading. Eighteen patients who were scheduled for dental implant placement and simultaneous bone grafting were randomly assigned to test or control groups. Diode laser (810 nm, 2 W, pulse interval 200 μs; pulse length 100 μs, 400-μm initiated fiber tip), or scalpel (control) was used to sever the periosteum to create a tension-free flap...
August 31, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28854496/the-efficacy-and-safety-of-combination-therapy-of-low-intensity-pulsed-ultrasound-stimulation-in-the-treatment-of-unstable-both-radius-and-ulna-fractures-in-children
#14
Tsuyoshi Ota, Soichiro Itoh, Kimihiro Yamashita
BACKGROUND: There are few reports of Low-intensity pulsed ultrasound (LIPUS) treatment for fresh forearm fractures in children. OBJECTIVES: LIPUS stimulation was applied after surgery of forearm fractures in children and the efficacy and safety of combination therapy of LIPUS treatment were evaluated. PATIENTS AND METHODS: Children with both radius and ulna fracture, twenty-five diaphysis (mid-R&U) and nineteen metaphysis (dist-R&U) fractures, were treated with intramedullary nailing followed by cast and splint mobilization...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28852360/eponymous-instruments-in-orthopaedic-surgery
#15
M Ayodele Buraimoh, Jane Z Liu, Stephen B Sundberg, Michael P Mott
Every day surgeons call for instruments devised by surgeon trailblazers. This article aims to give an account of commonly used eponymous instruments in orthopaedic surgery, focusing on the original intent of their designers in order to inform how we use them today. We searched PubMed, the archives of longstanding medical journals, Google, the Internet Archive, and the HathiTrust Digital Library for information regarding the inventors and the developments of 7 instruments: the Steinmann pin, Bovie electrocautery, Metzenbaum scissors, Freer elevator, Cobb periosteal elevator, Kocher clamp, and Verbrugge bone holding forceps...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28844842/cerebral-vein-malformations-result-from-loss-of-twist1-expression-and-bmp-signaling-from-skull-progenitor-cells-and-dura
#16
Max A Tischfield, Caroline D Robson, Nicole M Gilette, Shek Man Chim, Folasade A Sofela, Michelle M DeLisle, Alon Gelber, Brenda J Barry, Sarah MacKinnon, Linda R Dagi, Jeremy Nathans, Elizabeth C Engle
Dural cerebral veins (CV) are required for cerebrospinal fluid reabsorption and brain homeostasis, but mechanisms that regulate their growth and remodeling are unknown. We report molecular and cellular processes that regulate dural CV development in mammals and describe venous malformations in humans with craniosynostosis and TWIST1 mutations that are recapitulated in mouse models. Surprisingly, Twist1 is dispensable in endothelial cells but required for specification of osteoprogenitor cells that differentiate into preosteoblasts that produce bone morphogenetic proteins (BMPs)...
September 11, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28838109/endoscopic-endonasal-interdural-middle-fossa-approach-to-the-maxillary-nerve-anatomic-considerations-and-surgical-relevance
#17
Kumar Abhinav, David Panczykowski, Wei-Hsin Wang, Carl H Synderman, Paul A Gardner, Eric W Wang, Juan C Fernandez-Miranda
BACKGROUND: The maxillary nerve (V2) can be approached via the open middle fossa approach. OBJECTIVE: To delineate the anatomy of V2 and its specific segments with respect to the endonasal landmarks. We present the endoscopic endonasal interdural middle fossa approach to V2 and its potential application for the treatment of perineural spread in sinonasal/skull base tumors. METHODS: Five human head silicon-injected specimens underwent bilateral endoscopic endonasal transpterygoid approaches...
August 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28836446/modified-brostr%C3%A3-m-procedure-using-distal-fibular-periosteal-flap-augmentation-vs-anatomic-reconstruction-using-a-free-tendon-allograft-in-patients-who-are-not-candidates-for-standard-repair
#18
Hong Joon Choi, Dae Wook Kim, Jea Seok Park
BACKGROUND: The modified Broström procedure (MBP) is widely accepted as the primary operative treatment for chronic lateral ankle instability (CLAI). However, the MBP does not produce good clinical results in all patients, and anatomic reconstruction using a free tendon graft may be considered in those patients. The purpose of this study was to evaluate the efficacy of the MBP using distal fibular periosteal flap augmentation for CLAI in patients who were not candidates for standard repair...
August 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28832242/expression-and-functional-analysis-of-tumor-related-factor-s100a4-in-antler-stem-cells
#19
Da-Tao Wang, Wen-Hui Chu, Hong-Mei Sun, Heng-Xing Ba, Chun-Yi Li
Annual antler renewal is a stem cell-based epimorphic process driven by antler stem cells (ASCs) resident in antlerogenic periosteum (AP). Antlerogenic periosteal cells express a high level of S100A4, a metastasis-associated protein, which intrigued us to explore what role S100A4 could play in antler regeneration. The present study set out to investigate expression and effects of S100A4 in the ASCs and their progeny. The results showed that not only did cells from the AP express a high level of S100A4, but also the pedicle periosteum and the antler growth center...
August 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28830697/a-vascularized-medial-femoral-condyle-cortico-periosteal-graft-for-total-lunate-reconstruction
#20
Hiroki Hachisuka, Toru Sunagawa, Mitsuo Ochi, Wayne Allan Morrison
No abstract text is available yet for this article.
August 19, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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