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Bone anatomy

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https://www.readbyqxmd.com/read/28916911/evaluation-of-thirty-eight-cemented-pegged-glenoid-components-with-variable-backside-curvature-two-year-minimum-follow-up
#1
Florence Dauzère, Marine Arboucalot, Julie Lebon, Fanny Elia, Nicolas Bonnevialle, Pierre Mansat
BACKGROUND: The PERFORM™ pegged glenoid system has been used for shoulder arthroplasty since 2012. This system offers multiple backside curvatures per size to better match variable patient anatomy. As a result, less reaming is required and subchondral bone is preserved-a critical factor in preventing glenoid migration and loosening, thus enhancing implant longevity. PURPOSE: The purpose of this study was to analyze all radiographic modifications around this new glenoid implant...
September 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28914982/production-of-accurate-skeletal-models-of-domestic-animals-using-three-dimensional-scanning-and-printing-technology
#2
Fangzheng Li, Chunying Liu, Xuexiong Song, Yanjun Huan, Shansong Gao, Zhongling Jiang
Access to adequate anatomical specimens can be an important aspect in learning the anatomy of domestic animals. In this study, the authors utilized a structured light scanner and fused deposition modeling (FDM) printer to produce highly accurate animal skeletal models. First, various components of the bovine skeleton, including the femur, the fifth rib, and the sixth cervical (C6) vertebra were used to produce digital models. These were then used to produce 1:1 scale physical models with the FDM printer. The anatomical features of the digital models and three-dimensional (3D) printed models were then compared with those of the original skeletal specimens...
September 15, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28913138/chondrosarcoma-mimicking-an-adnexal-mass-a-very-rare-case-report
#3
Hüseyin Çağlayan Özcan, Aynur Mustafa, Zehra Bozdağ, Seyhun Sucu, Özcan Balat
Chondrosarcoma is considered as a common primary bone sarcoma. These sarcomas can form large masses without any specific symptoms because there are no barriers in pelvic anatomy to prevent the enlargement of tumors, and can mimic ovarian masses. We present a pelvic chondrosarcoma in a woman aged 37 years who was misdiagnosed as having an ovarian mass due to the limited information obtained from imaging studies. Pelvic chondrosarcoma should be considered in patients who have pelvic masses with solid components...
March 2017: Turk J Obstet Gynecol
https://www.readbyqxmd.com/read/28910382/refining-experimental-dental-implant-testing-in-the-g%C3%A3-ttingen-minipig-using-3d-computed-tomography-a-morphometric-study-of-the-mandibular-canal
#4
Giuliano M Corte, Johanna Plendl, Hana Hünigen, Kenneth C Richardson, Ole Gemeinhardt, Stefan M Niehues
This study reports morphometric and age-related data of the mandibular canal and the alveolar ridge of the Göttingen Minipig to avoid complications during in vivo testing of endosseus dental implants and to compare these data with the human anatomy. Using 3D computed tomography, six parameters of the mandibular canal as well as the alveolar bone height and the alveolar ridge width were measured in Göttingen Minipigs aged 12, 17 and 21 months. Our null hypothesis assumes that the age and the body mass have an influence on the parameters measured...
2017: PloS One
https://www.readbyqxmd.com/read/28906599/dual-extrusion-3d-printing-of-anatomical-models-for-education
#5
Michelle L Smith, James F X Jones
Two material 3D printing is becoming increasingly popular, inexpensive and accessible. In this paper, freely available printable files and dual extrusion fused deposition modelling were combined to create a number of functional anatomical models. To represent muscle and bone FilaFlex(3D) flexible filament and polylactic acid (PLA) filament were extruded respectively via a single 0.4 mm nozzle using a Big Builder printer. For each filament, cubes (5 mm(3) ) were printed and analyzed for X, Y, and Z accuracy...
September 14, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28902755/treatment-of-acute-carpal-bone-fractures
#6
Chad Hulsopple, Jesse Deluca, Christopher Jonas
Carpal bone fractures are common hand fractures that can be complicated by concomitant damage to surrounding structures, chronic comorbidities, or delays in diagnosis. This article provides an overview of wrist anatomy, an expedited review of the athlete's presenting condition, and a systematic approach to the evaluation of the wrist. Recommended treatment plans are based on a review of the literature and an evidence-based approach to imaging studies. It is imperative that sports medicine providers be aware of current literature for carpal bone fractures and collaborate with other medical subspecialties and the athlete to provide recommendations for a safe return to play...
September 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28902252/assessing-bone-thickness-in-the-infrazygomatic-crest-area-aiming-the-orthodontic-miniplates-positioning-a-tomographic-study
#7
Aline Rode Santos, Marcelo Castellucci, Iêda Margarida Crusoé-Rebello, Márcio Costa Sobral
Introduction: Due to the increasing use of miniplates for anchorage purposes in orthodontics, it is very important to know more about infrazigomatic crest anatomy (thickness), in adult patients. Objectives: Evaluate the infrazygomatic crest region thickness, in adult (male and female) patients. Methods: Cone-beam computerized tomography (CBCT) images from 40 patients were used to assess cross-sectional measurements of the infrazygomatic crest region...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28901615/model-based-dose-reconstruction-for-ct-dose-estimation
#8
Mingye Wu, Zhye Yin, Bruno De Man
PURPOSE: Our goal is to develop a model-based approach for CT dose estimation. We previously presented a CT dose estimation method that offered good accuracy in soft tissue regions but lower accuracy in bone regions. In this work, we propose an improved physic-based approach to achieve high accuracy for any materials and realistic clinical anatomies. METHODS: Like Monte Carlo techniques, we start from a model or image of the patient and we model all relevant x-ray interaction processes...
September 2017: Medical Physics
https://www.readbyqxmd.com/read/28891699/radiographic-anatomy-of-the-metatarsophalangeal-joint-and-digits-of-the-ostrich-struthio-camelus
#9
Payam Razeghi Tehrani, Hassan Gilanpour, Abbas Veshkini
The aim of this study was to develop a detailed and accessible set of reference images of the normal radiographic anatomy of the digits of the ostrich (Struthio camelus), with emphasis on the metatarsophalangeal joint and its arthrography. The distal excised pelvic limbs of 10 normal ostriches of different ages (ranging from 10 to 365 days of age) obtained from an abattoir were radiographed, and 2 arthrograms were performed. To illustrate the normal radiographic anatomy of the tarsometatarsal bone, 39 images were selected, labelled, and presented along with detailed descriptions and corresponding images of the bony skeleton...
September 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28891421/bone-marrow-aspiration-for-regenerative-orthopedic-intervention-technique-with-ultrasound-guidance-for-needle-placement
#10
Shane A Shapiro, Jennifer R Arthurs
AIM: We review relevant anatomy of the iliac crest, and describe an interventional technique to maximize harvesting of desired progenitor cells with ultrasound to guide safe trochar placement. MATERIALS & METHODS: We validated the technique on both sides of the pelvis in four human cadavers. RESULTS: Using ultrasound guidance, 32 BMA needles were placed in a safe zone along various portions of the iliac crest. CONCLUSION: Ultrasound guidance can improve accuracy of bone marrow aspirations form the iliac crest...
September 11, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28888571/accuracy-and-early-clinical-outcome-of-3-dimensional-planned-and-guided-single-cut-osteotomies-of-malunited-forearm-bones
#11
Simon Roner, Lazaros Vlachopoulos, Ladislav Nagy, Andreas Schweizer, Philipp Fürnstahl
PURPOSE: To investigate the reduction accuracy of 3-dimensional planned single-cut osteotomies (SCOTs) of the forearm that were performed using patient-specific guides. METHODS: A retrospective analysis of SCOTs performed between 2012 and 2014 was performed. Ten patients (age, 15-59 years) with 6 malunions of the ulna and 6 malunions of the radius were identified. The reduction accuracy was assessed by comparing the 3-dimensional preoperative plan of each osteotomy with the superimposed bone model extracted from postoperative computed tomography data...
September 6, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28885316/evaluation-of-single-tooth-loss-to-maxillary-sinus-and-surrounding-bone-anatomy-with-cone-beam-computed-tomography-a-multicenter-study
#12
Huseyin Gencay Keceli, Erhan Dursun, Anil Dolgun, Miguel Velasco-Torres, Suzan Karaoglulari, Reihaneh Ghoreishi, Khaled Sinjab, Rachel A Sheridan, Marius Kubilius, Melek D Tözüm, Pablo Galindo-Moreno, Hasan Guney Yilmaz, Hom-Lay Wang, Gintaras Juodzbalys, Tolga F Tözüm
BACKGROUND: Posterior maxillary tooth loss may complicate the implant treatment due to the alterations in alveolar anatomy and maxillary sinus pneumatization. This study aimed to comprehensively examine the anatomical structure of this region from cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS: The posterior maxilla regions with single tooth loss were analyzed by dividing the variables into 3 subgroups from images of 597 patients chosen from 1160 CBCTs...
September 6, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28882491/anatomic-and-high-resolution-computed-tomographic-angiography-study-of-the-lateral-femoral-condyle-flap-implications-for-surgical-dissection
#13
Mohamed Morsy, Yoo Joon Sur, Osman Akdag, Amr Eisa, Tarek A El-Gammal, Nirusha Lachman, Steven L Moran
BACKGROUND: The lateral femoral condyle (LFC) flap is a vascularized bone flap based on the superior lateral genicular artery (SLGA). Harvest technique for this flap has not yet been demonstrated. The purpose of this study was to better delineate the blood supply to the bone and skin of this flap to allow for a safe and effective harvest. MATERIALS AND METHODS: Twenty-three lower extremities were injected with latex or a mixture of latex and barium sulfate. The SLGA was identified and dissected, documenting the course, diameter, anatomical relations, length, and branches...
August 16, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28876452/management-of-primary-malignant-bone-and-soft-tissue-tumors-of-foot-and-ankle-is-it-worth-salvaging
#14
Harzem Özger, Buğra Alpan, Osman Emre Aycan, Natig Valiyev, Mustafa Çağlar Kir, Fulya Ağaoğlu
BACKGROUND AND OBJECTIVE: Performing limb salvage with safe margins and preserving meaningful function is very difficult in the setting of primary malignant bone and soft tissue tumors due to the complex and constrained anatomy of the foot and ankle. The study aims to evaluate the efficacy of limb salvage procedures in terms of functional and oncological outcomes. METHODS: Clinical data of 48 patients, who underwent surgical treatment between 1992 and 2015 in our institution, were retrospectively analyzed...
September 6, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28875339/c-arm-cone-beam-ct-for-intraprocedural-image-fusion-and-3d-guidance-in-portal-vein-embolization-pve
#15
Willie M Lüdemann, Georg Böning, Julius Chapiro, Martin Jonczyk, Dominik Geisel, Dirk Schnapauff, Gero Wieners, Moritz Schmelzle, Sascha Chopra, Rolf W Günther, Bernhard Gebauer, Florian Streitparth
PURPOSE: Portal vein embolization (PVE) is applied in patients with extended oncologic liver disease to induce hyperplasia of the future liver remnant and make resection feasible. Ultrasound (US) guidance is the gold standard for percutaneous portal vein access. This study evaluated feasibility and safety of C-arm cone beam computed tomography (CBCT) for needle guidance. MATERIALS AND METHODS: In 10 patients, puncture was performed under 3D needle guidance in a CBCT data set...
September 5, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28872528/quantitative-measurement-of-osseous-pathology-in-advanced-glenohumeral-osteoarthritis
#16
Joseph P Iannotti, Bong-Jae Jun, Thomas E Patterson, Eric T Ricchetti
BACKGROUND: Osteoarthritis of the glenohumeral joint has typical patterns of deformity as described by Walch et al. However, more severe glenoid pathology may be difficult to classify. The purpose of this study was to use 3-dimensional computed tomography (3-D CT) imaging analysis to define common pathologic subtypes that can be differentiated from the current Walch classification. METHODS: We performed quantitative measurements of premorbid and pathologic anatomy using preoperative 3-D CT scans from 155 cases of advanced glenohumeral osteoarthritis that underwent anatomic or reverse total shoulder arthroplasty...
September 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28866812/the-pyramidalis-anterior-pubic-ligament-adductor-longus-complex-plac-and-its-role-with-adductor-injuries-a-new-anatomical-concept
#17
Ernest Schilders, Srino Bharam, Elan Golan, Alexandra Dimitrakopoulou, Adam Mitchell, Mattias Spaepen, Clive Beggs, Carlton Cooke, Per Holmich
PURPOSE: Adductor longus injuries are complex. The conflict between views in the recent literature and various nineteenth-century anatomy books regarding symphyseal and perisymphyseal anatomy can lead to difficulties in MRI interpretation and treatment decisions. The aim of the study is to systematically investigate the pyramidalis muscle and its anatomical connections with adductor longus and rectus abdominis, to elucidate injury patterns occurring with adductor avulsions. METHODS: A layered dissection of the soft tissues of the anterior symphyseal area was performed on seven fresh-frozen male cadavers...
September 2, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28859846/the-influence-of-the-hips-position-on-measurements-of-posterior-tilt-in-a-valgus-impacted-femoral-neck-fracture
#18
Sigurd Erik Hoelsbrekken, Filip C Dolatowski
INTRODUCTION: Lateral radiographs are important for the evaluation of Garden I and II femoral neck fractures. These fractures appear undisplaced in the anteroposterior view, but posterior tilt of the femoral head may still be present in the lateral view. The influence of posterior tilt is, however, debated, which could be caused by the use of non-standardized cross-table radiographs in the conflicting reports. The aim of this bone-model study was therefore to evaluate the influence of the hips position on measurements of posterior tilt...
August 26, 2017: Injury
https://www.readbyqxmd.com/read/28857250/morphology-of-the-thoracic-limb-of-goat-as-evidenced-by-gross-osteology-and-radiology
#19
M Makungu, B Merere
The objective of this study was to provide the detailed normal gross osteology and radiographic anatomy of the thoracic limb in goats as a reference for clinical use and in biomedical research. Radiography of the thoracic limb was performed in five small East African goats. Radiographic findings were correlated with bone specimens from four adult small East African goats. The scapula was narrow. The major tubercle was large and extended proximally above the head of the humerus. The lateral supracondylar crest was less prominent...
August 31, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28852952/atlas-based-segmentation-of-temporal-bone-anatomy
#20
Kimerly A Powell, Tong Liang, Brad Hittle, Don Stredney, Thomas Kerwin, Gregory J Wiet
PURPOSE: To develop a time-efficient automated segmentation approach that could identify critical structures in the temporal bone for visual enhancement and use in surgical simulation software. METHODS: An atlas-based segmentation approach was developed to segment the cochlea, ossicles, semicircular canals (SCCs), and facial nerve in normal temporal bone CT images. This approach was tested in images of 26 cadaver bones (13 left, 13 right). The results of the automated segmentation were compared to manual segmentation visually and using DICE metric, average Hausdorff distance, and volume similarity...
August 29, 2017: International Journal of Computer Assisted Radiology and Surgery
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