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https://www.readbyqxmd.com/read/28527295/periostitis-ossificans-arising-in-the-mandibular-bone-of-young-patient-report-of-an-unusual-case-and-review-of-the-literature
#1
Masakatsu Fukuda, Katsuyuki Inoue, Hideaki Sakashita
Periostitis ossificans, also known as Garré osteomyelitis, is a specific type of chronic osteomyelitis that forms new bone under the periosteum resulting from a periosteal reaction to chronic inflammation or infections. It commonly affects the mandible secondary to odontogenic infection. The therapeutic approach involves eliminating the infectious cause and antibiotic administration. This report describes an unusual case of periostitis ossificans arising from the mandible of an 11-year-old boy. The cause of infection was correlated with a lower right unerupted third molar, which had no obvious connection with the oral cavity...
April 26, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28515597/tibial-periosteal-ganglion-cyst-the-ganglion-in-disguise
#2
Anjuna Reghunath, Mahesh K Mittal, Geetika Khanna, V Anil
Soft tissue ganglions are commonly encountered cystic lesions around the wrist presumed to arise from myxomatous degeneration of periarticular connective tissue. Lesions with similar pathology in subchondral location close to joints, and often simulating a geode, is the less common entity called intraosseous ganglion. Rarer still is a lesion produced by mucoid degeneration and cyst formation of the periostium of long bones, rightly called the periosteal ganglion. They are mostly found in the lower extremities at the region of pes anserinus, typically limited to the periosteum and outer cortex without any intramedullary component...
January 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28514526/direct-medial-approach-in-surgical-fixation-of-fractures-in-the-posterior-aspect-of-the-medial-malleolus
#3
Ang Chay-You, Ling Marcus, Koh Joyce Suang-Bee, Howe Tet-Sen
BACKGROUND: Fractures in the posterior aspect of the medial malleolus form an important subset of ankle fractures and the indications for fixation include involvement of > 25% of the articular surface or an articular step off by > 2mm. Several approaches have been described but there has been no recent study on the direct medial approach. METHODS: Five fresh frozen cadaveric ankles were dissected using the direct medial approach. A longitudinal incision of 10cm was centered directly over the medial malleolus and deepened straight down to the bone...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28490958/transplantation-of-human-neonatal-foreskin-stromal-cells-in-ex-vivo-organotypic-cultures-of-embryonic-chick-femurs
#4
Abdullah Aldahmash, Radhakrishnan Vishnubalaji
We have previously reported that human neonatal foreskin stromal cells (hNSSCs) promote angiogenesis in vitro and in chick embryo chorioallantoic membrane (CAM) assay in vivo. To examine the in vivo relevance of this observation, we examined in the present study the differentiation potential of hNSSCs in ex vivo organotypic cultures of embryonic chick femurs. Isolated embryonic chick femurs (E10 and E11) were cultured for 10 days together with micro-mass cell pellets of hNSSCs, human umbilical vein endothelial cells (HUVEC) or a combination of the two cell types...
May 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28475087/small-palatal-swelling-an-uncommon-presentation-of-intraoral-schwannoma
#5
Luiz Alcino Gueiros, Andreza Barkokebas, Alessandra Tavares Carvalho, Jair Carneiro Leão
Schwannomas are uncommon benign tumors arising in the nerve-supporting Schwann cells. Intraoral lesions usually present in the tongue or floor of the mouth as a submucosal nodule, while the palate is rarely affected. A 26-year-old white man presented with an asymptomatic submucosal fibroelastic nodule in the hard palate. The 2 × 2-cm lesion was covered by normal-appearing mucosa. Under the working diagnosis of minor salivary gland tumor, an incisional biopsy was performed, and analysis revealed an encapsulated tumor with a well-defined biphasic pattern: hypercellular areas with spindled cells arranged in palisades and less cellular areas formed by irregular arranged masses of elongated cells and fibers...
May 2017: General Dentistry
https://www.readbyqxmd.com/read/28469488/ultrasound-diagnosed-tibia-stress-fracture-a-case-report
#6
Adae Amoako, Ayesha Abid, Anthony Shadiack, Robert Monaco
Stress fractures are a frequent cause of lower extremity pain in athletes, and especially in runners. Plain imaging has a low sensitivity. Magnetic resonance imaging (MRI) or bone scan scintigraphy is the criterion standard, but expensive. We present the case of a young female distance runner with left shin pain. Plain radiography was unremarkable. Ultrasound showed focal hyperechoic elevation of the periosteum with irregularity over the distal tibia and increased flow on Doppler. These findings were consistent with a distal tibia stress fracture and confirmed by MRI...
2017: Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28466094/periosteal-turndown-flap-for-posterior-occipitocervical-fusion-a-technique-review
#7
Siamak Yasmeh, Adrienne Quinn, Liam Harris, Austin E Sanders, Ted Sousa, David L Skaggs, Lindsay M Andras
PURPOSE: Recently, several authors have proposed techniques for improving the fusion rate in pediatric posterior occipitocervical fusion including a variety of implants and the use of bone morphogenetic protein. A technique by Koop et al. using a periosteal flap for occipitocervical arthrodesis was described in 1984. METHODS: A straight incision is made about the posterior neck to expose the occipitocervical region from the inion superiorly to the lowest cervical vertebrae to be fused inferiorly...
May 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28455115/reduced-free-communication-of-the-subarachnoid-space-within-the-optic-canal-in-the-human
#8
Mikee Liugan, Zhaoyang Xu, Ming Zhang
PURPOSE: Recent studies in patients demonstrated that cerebrospinal fluid does not flow continuously between the intracranial subarachnoid space (SAS) and the space around the optic nerve in the orbit. Its anatomical basis remains elusive. The objective of this study was to use a novel anatomical technology, the epoxy sheet plastination, to reveal the configuration of the fibrous structures within the optic canal and their relationship with the optic nerve, SAS and ophthalmic artery. DESIGN: A human cadaveric study...
April 25, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28453162/transposition-of-both-oblique-muscles-combined-with-lateral-rectus-botulinum-toxin-injection-and-globe-fixation-suture-in-the-treatment-of-congenital-cranial-nerve-iii-palsy
#9
Orwa Nasser, Richard W Hertle, Boonkit Purt, Shawn Martin
The authors report a new technique to treat complete cranial nerve III palsy. A 15-year-old girl underwent botulinum toxin injection into the lateral rectus muscle, nasal transposition of both the superior and inferior oblique muscles to the medial rectus insertion, and absorbable suture globe fixation to the nasal orbital periosteum. Six months postoperatively, her primary position eye deviation was within 12 prism diopters of orthotropia with limitation of ductions in all directions. [J Pediatr Ophthalmol Strabismus...
April 28, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28452204/mesenchymal-stem-cells-time-to-change-the-name
#10
Arnold I Caplan
Mesenchymal stem cells (MSCs) were officially named more than 25 years ago to represent a class of cells from human and mammalian bone marrow and periosteum that could be isolated and expanded in culture while maintaining their in vitro capacity to be induced to form a variety of mesodermal phenotypes and tissues. The in vitro capacity to form bone, cartilage, fat, etc., became an assay for identifying this class of multipotent cells and around which several companies were formed in the 1990s to medically exploit the regenerative capabilities of MSCs...
April 28, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28448311/surgical-techniques-for-closure-of-a-scalp-defect-after-resection-of-skin-malignancy
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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