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https://www.readbyqxmd.com/read/28448311/surgical-techniques-for-closure-of-a-scalp-defect-after-resection-of-skin-malignancy
#1
Maciej Rysz, Dariusz Grzelecki, Maciej Mazurek, Stanisław Starościak, Romuald Krajewski
BACKGROUND: Surgery for scalp malignancies is aimed at the complete resection and a good aesthetic outcome. The goal was to develop an algorithm for scalp reconstruction based on the authors' surgical experience. METHODS: This is a retrospective analysis of 123 procedures of scalp malignancies in 105 patients. Twenty eight procedures were for resection of squamous cell carcinoma, 54 for basal cell carcinoma, and 41 for suspected melanomas. RESULTS: Primary closure (27 procedures), local flap (LF; 19), split-thickness skin graft (SG; 64), rotated LF and SG (9), and free vascularized flaps (4) were used...
April 12, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28441303/surgical-techniques-for-closure-of-a-scalp-defect-after-resection-of-skin-malignancy
#2
Maciej Rysz, Dariusz Grzelecki, Maciej Mazurek, Stanisław Starościak, Romuald Krajewski
BACKGROUND: Surgery for scalp malignancies is aimed at the complete resection and a good aesthetic outcome. The goal was to develop an algorithm for scalp reconstruction based on the authors' surgical experience. METHODS: This is a retrospective analysis of 123 procedures of scalp malignancies in 105 patients. Twenty eight procedures were for resection of squamous cell carcinoma, 54 for basal cell carcinoma, and 41 for suspected melanomas. RESULTS: Primary closure (27 procedures), local flap (LF; 19), split-thickness skin graft (SG; 64), rotated LF and SG (9), and free vascularized flaps (4) were used...
May 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28423287/microfracture-versus-autologous-chondrocyte-implantation-for-articular-cartilage-lesions-in-the-knee-a-systematic-review-of-5-year-outcomes
#3
Matthew J Kraeutler, John W Belk, Justin M Purcell, Eric C McCarty
BACKGROUND: Microfracture (MFx) and autologous chondrocyte implantation (ACI) are 2 surgical treatment options used to treat articular cartilage injuries of the knee joint. PURPOSE: To compare the midterm to long-term clinical outcomes of MFx versus ACI for focal chondral defects of the knee. STUDY DESIGN: Systematic review. METHODS: A systematic review was performed by searching PubMed, the Cochrane Library, and Embase to locate studies (level of evidence I-III) comparing the minimum average 5-year clinical outcomes of patients undergoing MFx versus ACI...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28420485/subcutaneous-dermatofibrosarcoma-protuberans-a-rare-subtype-with-predilection-for-the-head-a-retrospective-series-of-18-cases
#4
Beatriz Llombart, Carlos Serra-Guillén, Luis Rubio, Eduardo Nagore, Celia Requena, Victor Traves, Laura Calomarde, Bernardo Bancalari, José Antonio López-Guerrero, Carlos Guillen-Barona, Onofre Sanmartín
BACKGROUND: Dermatofibrosarcoma protuberans (DFSP) typically affects the dermis and subcutaneous tissue. The subcutaneous variant is rare. OBJECTIVE: We sought to characterize the subcutaneous DFSP (SC-DFSP) variant and compare it with cutaneous DFSP (C-DFSP). METHODS: This work was a retrospective study of DFSP treated in our institution. RESULTS: Of 124 cases of DFSP, 18 were SC-DFSP (14.5%). Except for the deep location, the pathologic and genetic features were indistinguishable from the C-DFSP variant...
April 15, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28415912/a-method-for-the-immunohistochemical-identification-and-localization-of-osterix-in-periosteum-wrapped-constructs-for-tissue-engineering-of-bone
#5
Phillip McClellan, Robin Jacquet, Qing Yu, William J Landis
A novel immunohistochemistry (IHC) approach has been developed to label and localize osterix, a bone-specific transcription factor, within formalin-fixed, paraffin-embedded, tissue-engineered constructs uniquely containing synthetic polymers and human periosteal tissue. Generally, such specimens consisting in part of polymeric materials and mineral are particularly difficult for IHC identification of proteins. Samples here were fabricated from human periosteum, electrospun poly-l-lactic acid (PLLA) nanofibers, and polycaprolactone/poly-l-lactic acid (PCL/PLLA, 75/25) scaffolds and harvested following 10 weeks of implantation in athymic mice...
April 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28410135/custom-built-tools-for-the-study-of-deer-antler-biology
#6
Wenhui Chu, Haiping Zhao, Junde Li, Chunyi Li
Deer antlers can be developed into multiple novel models to study growth and development of tissues for biomedical research. To facilitate this process, we have invented and further refined five custom-built tools through three decades of antler research. These are: 1. Pedicle growth detector to pinpoint the timing when pedicle growth is initiated, thus stimuli for pedicle and first antler formation can be investigated and identified. 2. Thin periosteum slice cutter to thinly slice (0.2mm or 0.7 mm thick) a whole piece of antlerogenic periosteum (AP) or pedicle periosteum (PP), which facilitates gene delivery into cells resident in these tissues, thus making transgenic antlers possible...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28396232/treatment-of-osteomyelitis-a-case-for-disruption-of-the-affected-adjacent-periosteum
#7
J W Hudson, Austin P Daly, Michael Foster
PURPOSE: To evaluate the response of mandibular osteomyelitis treated by surgical decortication with disruption of the affected adjacent periosteum in concert with long-term targeted antibiotic therapy. The hypothesis is that, by removing the buccal cortical plate and disrupting the hypertrophically inflamed adjacent periosteum, the medullary bone will be brought in contact with bleeding tissue and circulating immunologic factors and antibiotics, which will promote definitive resolution...
March 18, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28382122/use-of-an-osteoplastic-flap-for-the-prevention-of-mastoidectomy-retroauricular-defects
#8
Ricardo Ferreira Bento, Robinson Koji Tsuji, Anna Carolina de Oliveira Fonseca, Ricardo Dourado Alves
Introduction After mastoidectomy, patients usually complain of bone depressions in the retroauricular region in the surgical site, especially in procedures that require extensive cortical resections. This causes inconveniences such as difficulty wearing glasses, cleaning, and aesthetics complaints. Objective This study aims to describe a vascularized flap surgical technique that uses the mastoid cortical bone adhered to the periosteum, which is pedicled on the anterior portion and repositioned at the end of the surgery...
April 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28374350/teaching-the-basics-development-and-validation-of-a-distal-radius-reduction-and-casting-model
#9
Mark A Seeley, Peter D Fabricant, J Todd R Lawrence
BACKGROUND: Approximately one-third of reduced pediatric distal radius fractures redisplace, resulting in further treatment. Two major modifiable risk factors for loss of reduction are reduction adequacy and cast quality. Closed reduction and immobilization of distal radius fractures is an Accreditation Council for Graduate Medical Education residency milestone. Teaching and assessing competency could be improved with a life-like simulation training tool. QUESTIONS/PURPOSES: Our goal was to develop and validate a realistic distal radius fracture reduction and casting simulator as determined by (1) a questionnaire regarding the "realism" of the model and (2) the quantitative assessments of reduction time, residual angulation, and displacement...
April 3, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28371519/evaluation-of-the-bony-repair-in-rat-cranial-defect-using-near-infrared-reflectance-spectroscopy-and-discriminant-analysis
#10
Leomir A S de Lima, Kássio M G Lima, Lana S S de Oliveira, Aurigena A Araújo, Raimundo Fernandes de Araújo Junior
We set out to determine whether near infrared reflectance spectroscopy (NIRS) combined with principal component analysis-linear discriminant analysis (LDA) or, variable selection techniques employing successive projection algorithm or genetic algorithm (GA) could evaluate the bone repair in cranial critical-size (5 mm) defect after stimulation with collagen sponge scaffold and/or infrared low-level laser therapy directly on the local. Forty-five Winstar rats were divided into nine groups of five each, namely: group H - healthy, n = 5 (without treatment and without cranial critical-size defect), (GI positive control - n = 5, 21 days or n = 5, 30 days) without treatment and with cranial critical-size defect; (GII-n = 5, 21 days or n = 5, 30 days) cranial critical-size defect filled with collagen sponge scaffold; (GIII-n = 5, 21 days or n = 5, 30 days) cranial critical-size defect submitted to low-level laser therapy; (GIV-n = 5, 21 days or n = 5, 30 days) cranial critical-size defect submitted to combined collagen sponge scaffold + low-level laser therapy treatment...
April 3, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28369020/volumization-of-the-brow-at-the-time-of-blepharoplasty-treating-the-eyebrow-fat-pad-as-an-independent-unit
#11
Ivan Vrcek, Eva Chou, Marie Somogyi, John W Shore
PURPOSE: Loss of volume in the sub-brow fat pad with associated descent of the eyebrow is a common anatomical finding resulting in both functional and aesthetic consequences. A variety of techniques have been described to address brow position at the time of blepharoplasty. To our knowledge, none of these techniques treat the sub-brow fat pad as an isolated unit. Doing so enables the surgeon to stabilize and volumize the brow without resultant tension on the blepharoplasty wound. The authors describe a technique for addressing volume loss in the eyebrow with associated brow descent that treats the sub-brow fat pad as an isolated unit...
March 31, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28357168/giant-osteolipoma-fixed-to-the-greater-trochanter-of-the-femur-in-a-seventy-year-old-elderly-woman
#12
Ali J Electricwala, Yogesh Panchwagh, Jaffer T Electricwala
A lipoma containing mature osseous elements is called osteolipoma. This article describes a giant osteolipoma fixed to the periosteum of the greater trochanter of the femur. A seventy-year-old woman presented with a large subcutaneous mass in the right buttock which had been present for six years. On local examination, a giant mass that was ovoid, firm, non-tender, well demarcated, subcutaneous, and relatively fixed to the greater trochanter was palpated in the right buttock. A medical imaging and fluoro-deoxy-glucose (FDG) bone scan revealed a large lipomatous and metabolically active lesion arising from the periosteum of the greater trochanter of femur...
February 17, 2017: Curēus
https://www.readbyqxmd.com/read/28357005/peripheral-solitary-osteoma-of-the-zygomatic-arch-a-case-report-and-literature-review
#13
REVIEW
Thomas Starch-Jensen
Osteoma is a benign slow-growing osteogenic neoplasm commonly occurring in the craniofacial skeleton, characterized by the proliferation of compact and/or cancellous bone. Osteomas may be peripheral, central, or extraskeletal. Peripheral osteomas arise from the periosteum and are quite uncommon in the jaw bones. The exact aetiology and pathogenesis of peripheral osteoma are unknown. Clinically, peripheral osteomas are usually asymptomatic, but depending on the location and size of the lesion, it may cause swelling, pain, esthetic disfigurement and functional impairment...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28350656/an-update-on-the-anatomy-of-the-forehead-compartments
#14
Sebastian Cotofana, Asima Mian, Jonathan M Sykes, Wolfgang Redka-Swoboda, Andrea Ladinger, Tatjana Pavicic, Thilo L Schenck, Fahd Benslimane, Fabio Ingallina, Alexander Schlattau
BACKGROUND: The forehead is one of the most frequent locations for neuromodulator and soft tissue filler applications; however, the underlying anatomy is still poorly understood. Thus far, the presence of deep forehead compartments has not been confirmed. METHODS: Twenty Caucasian cephalic specimens, 15 fresh frozen (six female and nine male) and five with formalin-phenol embalmment (three female and two male) were investigated using contrast-enhanced computed tomographic scans, dye injections, and anatomical dissections...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28345758/biodegradable-gelatin-beta-tricalcium-phosphate-sponges-incorporating-recombinant-human-fibroblast-growth-factor-2-for-treatment-of-recession-type-defects-a-split-mouth-study-in-dogs
#15
A Shujaa Addin, T Akizuki, S Hoshi, T Matsuura, T Ikawa, S Fukuba, M Matsui, Y Tabata, Y Izumi
BACKGROUND AND OBJECTIVE: Tissue engineering by using recombinant human (rh) growth factor technology may offer a promising therapeutic approach for treatment of gingival recession. Fibroblast growth factor-2 (FGF-2) has shown the ability to promote periodontal regeneration. Gelatin/beta-tricalcium phosphate (gelatin/β-TCP) sponges have been developed to control the release of growth factors. The present study evaluated the periodontal regenerative efficacy of rhFGF-2 by comparing gelatin/β-TCP sponges incorporated with rhFGF-2 to the scaffolds alone in artificially created recession-type defects in dogs...
March 27, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28345403/intralesional-osteophyte-regrowth-following-autologous-chondrocyte-implantation-after-previous-treatment-with-marrow-stimulation-technique
#16
Marco Kawamura Demange, Tom Minas, Arvind von Keudell, Sonal Sodha, Tim Bryant, Andreas H Gomoll
Objective Bone marrow stimulation surgeries are frequent in the treatment of cartilage lesions. Autologous chondrocyte implantation (ACI) may be performed after failed microfracture surgery. Alterations to subchondral bone as intralesional osteophytes are commonly seen after previous microfracture and removed during ACI. There have been no reports on potential recurrence. Our purpose was to evaluate the incidence of intralesional osteophyte development in 2 cohorts: existing intralesional osteophytes and without intralesional osteophytes at the time of ACI...
April 2017: Cartilage
https://www.readbyqxmd.com/read/28340490/a-novel-method-of-neo-osseous-flap-prefabrication-induction-of-free-calvarial-periosteum-with-bioactive-glass
#17
Ali Aliyev, Omer Ekin, Ozan Bitik, Gokhan Tuncbilek
Background Reconstruction of craniofacial bone defects is a primary focus of craniofacial surgery. Although autogenous bone grafts remain as the gold standard, alloplastic materials have also gained widespread popularity due to their off-the-shelf availability, ease of use, and durability. In addition to replacing the missing bone, some of these alloplastic materials have also been found to induce new bone formation. Objectives In this study, the phenomenon of neo-osseous induction with bioactive glass was investigated for different implant-soft tissue configurations...
March 24, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28338421/harnessing-the-osteogenicity-of-in-vitro-stem-cell-derived-mineralized-extracellular-matrix-as-3d-biotemplate-to-guide-bone-regeneration
#18
Yoke Chin Chai, Johanna Bolander, Ioannis Papantoniou, Jennifer Patterson, Jef Vleugels, Jan Schrooten, Frank P Luyten
Advanced biomaterials that are capable of guiding robust bone regeneration are highly demanded for translational therapy of bone defects or bone augmentation in clinics. One of the strategic approaches is to produce tissue engineering (TE) constructs that mediate bone regeneration by recapitulating the natural bone formation or healing process. In this study, we aimed at producing devitalized mineralized carriers with augmented bone forming capacity via a modified culture protocol (i.e., culture conditions with high calcium and/or phosphate concentrations) that first promotes cell growth and, subsequently, mineralized extracellular matrix (ECM) deposition by human periosteum-derived osteoprogenitor cells (hPDCs) on additive manufactured three-dimensional (3D) porous titanium (Ti)-based scaffolds...
March 24, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28328629/clinical-biomechanical-and-anatomic-investigation-of-colles-fascia-and-pubic-ramus-periosteum-for-use-during-medial-thighplasty
#19
Martin J Carney, Tim Matatov, Matthew Freeman, John Miller, Rahul Vemula, Jason Schuster, Michael Dancisak, John Lindsey, Guenevere Rae
INTRODUCTION: The medial thighplasty is a procedure where patients may attain superior mobility, hygiene, and cosmesis. Most surgeons use attachment of the superficial fascial system (SFS) of the thigh flap to the Colles fascia, whereas others attach the SFS to the pubic ramus periosteum. Because of a high complication profile, we aim to elucidate the clinical, biomechanical, and anatomic qualities of the Colles fascia versus the pubic ramus periosteum. MATERIALS AND METHODS: We performed a 17-year retrospective review documenting clinical complications, a biomechanical analysis of sutures placed in different tissue layers of the thigh, and a histologic analysis surrounding the ischiopubic ramus...
March 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28327417/appositional-bone-graft-tunneled-technical-note
#20
Roberto Almeida de Azevedo, Felipe Seoane Matos, Leonardo Morais Godoy Figueiredo
INTRODUCTION: A satisfactory positioning of the dental implants is very important in the cosmetic and functional outcome in this treatment for edentulous. Insertion of an endosseous implant in the correct positioning requires sufficient bone volume. Therefore, bone-grafting procedures are becoming increasingly common, especially for the augmentation of horizontally deficient ridges. PRESENTATION OF CASE: Many patients have been treated with this technique of appositional Bone Graft Tunneled at our clinic since 2005...
February 20, 2017: International Journal of Surgery Case Reports
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