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Bone anatomy

A Burdzinska, B Dybowski, W Zarychta-Wisniewska, A Kulesza, R Zagozdzon, Z Gajewski, L Paczek
Cell therapy is emerging as an alternative treatment of stress urinary incontinence. However, many aspects of the procedure require further optimization. A large animal model is needed to reliably test cell delivery methods. In this study we aim to determine suitability of the goat as an experimental animal for testing intraurethral autologous cell transplantation in terms of urethral anatomy and cell culture parameters. The experiments were performed in 12 mature/aged female goats. Isolated caprine muscle derived cells (MDC) were myogenic in vitro and mesenchymal stem cells (MSC) population was able to differentiate into adipo-, osteo- and chondrogenic lineages...
October 14, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Robert Fenstermaker, Ajay Abad
PURPOSE OF REVIEW: This article reviews sellar and parasellar anatomy and the appearance of normal bone and soft tissue components on both CT and MRI. Pituitary gland structure and function are discussed with respect to hormone secretion, along with clinical syndromes caused by perturbations in hormone levels. Syndromes and specific diseases in the sellar and parasellar regions are discussed along with characteristic clinical features and imaging findings. RECENT FINDINGS: Bone and calcifications are best visualized with CT scans, while soft tissues are better defined using MRI...
October 2016: Continuum: Lifelong Learning in Neurology
Alexandre Terrier, Valérie Parvex, Hannes A Rüdiger
INTRODUCTION: In total hip arthroplasty, cup medialisation with compensatory increase of femoral offset has been proposed to increase the moment arms of abductor muscles. However, this technique is associated with a loss of acetabular bone stock. Previous data indicates that the potential benefit is not constant among patients and is likely related to patient anatomy. METHOD: Therefore, to be able to select patients who would benefit most from this technique, we measured several anatomical parameters of the pelvis and femur in 15 patients; and evaluated correlations between them and the changes of moment arms associated with cup medialisation...
October 8, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Maarten van Eerd, Arno Lataster, Micha Sommer, Jacob Patijn, Maarten van Kleef
The cervical facet joints, also called the zygapophyseal joints, are a potential source of neck pain (cervical facet joint pain). The cervical facet joints are innervated by the cervical medial branches (CMBs) of the cervical segmental nerves. Cervical facet joint pain has been shown to respond to multisegmental radiofrequency denervation of the cervical medial branches. This procedure is performed under fluoroscopic guidance. Currently, three approaches are described and used. Those three techniques of radiofrequency treatment of the CMBs, classified on the base of the needle trajectory toward the anatomical planes, are as follows: the posterolateral technique, the posterior technique, and the lateral technique...
October 13, 2016: Pain Practice: the Official Journal of World Institute of Pain
A Zioła-Frankowska, M Dąbrowski, Ł Kubaszewski, P Rogala, A Kowalski, M Frankowski
The study was carried out to determine the content of mercury in bone tissue of the proximal femur (head and neck bone) of 95 patients undergoing total hip replacement due to osteoarthritis, using CF-AFS analytical technique. Furthermore, the investigations were aimed at assessing the impact of selected factors, such as age, gender, tobacco smoking, alcohol consumption, exposure to chemical substance at work, type of degenerative changes, clinical evaluation and radiological parameters, type of medications, on the concentration of mercury in the head and neck of the femur, resected in situ...
October 13, 2016: Environmental Science and Pollution Research International
Heather A Richbourg, Matthew J Martin, Emma R Schachner, Margaret A McNulty
Rodent models are used for a variety of orthopedic research applications; however, anatomy references include mostly artistic representations. Advanced imaging techniques, including micro-computed tomography (microCT), can provide more accurate representations of subtle anatomical characteristics. A recent microCT atlas of laboratory mouse (Mus musculus) anatomy depicts the central and tarsal bone III (T3) as a single bone, differing from previous references. Fusion of tarsal bones is generally characterized as pathological secondary to mutations associated with growth factors, and normal variation has not been documented in the mouse tarsus...
October 12, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Tarek M Hegazi, Jeffrey A Belair, Eoghan J McCarthy, Johannes B Roedl, William B Morrison
Injuries of the hip and surrounding structures represent a complex and commonly encountered scenario in athletes, with improper diagnosis serving as a cause of delayed return to play or progression to a more serious injury. As such, radiologists play an essential role in guiding management of athletic injuries. Familiarity with hip anatomy and the advantages and limitations of various imaging modalities is of paramount importance for accurate and timely diagnosis. Magnetic resonance (MR) imaging is often the modality of choice for evaluating many of the injuries discussed, although preliminary evaluation with conventional radiography and use of other imaging modalities such as ultrasonography (US), computed tomography, and bone scintigraphy may be supplementary or preferred in certain situations...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Oui Sik Yoo, Yong Seuk Lee, Myung Chul Lee, Jae Hong Park, Jae Won Kim, Doo Hoon Sun
BACKGROUND: After open wedge high tibial osteotomy (OWHTO), the proximal fragment resembles the anatomy of the proximal tibia that is aligned in the anterior-posterior direction and the distal fragment resembles the anatomy of the mid shaft that is aligned in the proximal-distal direction. In addition, the medial portion of the proximal fragment becomes aligned medially and the medial portion of the distal fragment, laterally, depending on the magnitude of the posterior opening gap. Therefore, there would be a mismatch between the post-correction bony surface and the previous pre-contoured plate geometry...
October 10, 2016: BMC Musculoskeletal Disorders
N-X Bonne, F Dubrulle, M Risoud, C Vincent
The surgical management of skull base lesions is difficult due to the complex anatomy of the region and the intimate relations between the lesion and adjacent nerves and vessels. Minimally invasive approaches are increasingly used in skull base surgery to ensure an optimal functional prognosis. Three-dimensional (3D) computed tomography (CT) reconstruction facilitates surgical planning by visualizing the anatomical relations of the lesions in all planes (arteries, veins, nerves, inner ear) and simulation of the surgical approach in the operating position...
October 5, 2016: European Annals of Otorhinolaryngology, Head and Neck Diseases
Paige Madison
A fossilized skeleton discovered in 1856 presented naturalists with a unique challenge. The strange, human-looking bones of the first recognized Neanderthal confronted naturalists with a new type of object for which they had no readily available interpretive framework. This paper explores the techniques and approaches used to understand these bones in the years immediately following the discovery, in particular 1856-1864. Historians have previously suggested that interpretations and debates about Neanderthals hinged primarily on social, political and cultural ideologies...
September 2016: British Journal for the History of Science
N A Koontz, T A Seltman, S F Kralik, K M Mosier, H R Harnsberger
Radiologists have long relied upon the use of metaphoric imaging signs to attribute meaning to disease or anatomy-specific imaging patterns encountered in clinical imaging. Teachers of radiology often employ the use of such signs to help learners rapidly identify the typical appearance of various pathologies. Head and neck (H&N) imaging is no exception, and as a specialty that deals with uncommon pathologies and complex anatomy, learners and practising radiologists alike may benefit from this simplistic, pattern-based approach...
October 3, 2016: Clinical Radiology
Keguang Chen, Huiying Lyu, Lin Yang, Tianyu Zhang, Peidong Dai
OBJECTIVES: An aberrant subarcuate artery (SAA) and its related canal are infrequent and asymptomatic. The presence of this variation may cause untoward hemorrhages, if accidentally nicked. Therefore, it is important for otologists to be aware of this entity, and its relative anatomy, to avoid any unexpected complication. We present a case of a 7-year-old girl who presented with right-sided microtia with membranous atresia. METHODS: High-resolution computed tomographic scan and three-dimensional reconstruction of the temporal bone showed bilateral enlarged SAA...
October 7, 2016: ORL; Journal for Oto-rhino-laryngology and its related Specialties
Kenneth Chin, Joshua M Abzug, Donald S Bae, Bernard D Horn, Martin Herman, Craig P Eberson
Management of pediatric polytrauma patients is one of the most difficult challenges for orthopaedic surgeons. Multisystem injuries frequently include complex orthopaedic surgical problems that require intervention. The physiology and anatomy of children and adolescent trauma patients differ from the physiology and anatomy of an adult trauma patient, which alters the types of injuries sustained and the ideal methods for management. Errors of pediatric polytrauma care are included in two broad categories: missed injuries and inadequate fracture treatment...
February 15, 2016: Instructional Course Lectures
Chad M Fortun, Ivan Wong, Joseph P Burns
Failed arthroscopic soft-tissue stabilization and anterior glenoid bone loss have been shown to have high failure rates after standard arthroscopic stabilization techniques. For patients with recurrent glenohumeral instability, the Bristow-Latarjet procedure is currently the standard of care. It is predominantly performed through an open deltopectoral approach but has recently been described arthroscopically. Although providing excellent clinical outcomes, the Bristow-Latarjet procedure violates the subscapularis muscle, has a steep learning curve with a high complication rate, and permanently changes the anterior shoulder anatomy, making any future revision surgery more challenging...
August 2016: Arthroscopy Techniques
S Barone, A Paoli, A V Razionale, R Savignano
Transparent and removable aligners represent an effective solution to correct various orthodontic malocclusions through minimally invasive procedures. An aligner-based treatment requires patients to sequentially wear dentition-mating shells obtained by thermoforming polymeric disks on reference dental models. An aligner is shaped introducing a geometrical mismatch with respect to the actual tooth positions in order to induce a loading system, which moves the target teeth towards the correct positions. The common practice is based on selecting the aligner features (material, thickness, auxiliary elements) by only considering clinician's subjective assessments...
October 5, 2016: International Journal for Numerical Methods in Biomedical Engineering
Giovanni Succo, Erika Crosetti, Andy Bertolin, Marco Lucioni, Giuseppe Rizzotto
The first supratracheal partial laryngectomy (STPL) with tracheohyoidoepiglottopexy was performed in 1972. This procedure entailed preservation of the suprahyoid epiglottis as well as a pexy of the hyoid bone and residual epiglottis to the first tracheal ring; however, this technique was abandoned by the same author in the early 1980s because of poor functional outcomes. © 2016 Wiley Periodicals, Inc. Head Neck, 2016.
October 5, 2016: Head & Neck
T K Kim, Mark Phillips, Mohit Bhandari, John Watson, Rajesh Malhotra
BACKGROUND: Most TKA prostheses are designed based on the anatomy of white patients. Individual studies have identified key anthropometric differences between the knees of the white population and other major ethnic groups, yet there is limited understanding of what these findings may indicate if analyzed collectively. QUESTION/PURPOSE: What are the differences in morphologic features of the distal femur and proximal tibia among and within various ethnicities? METHODS: A systematic review of the PubMed database and a hand-search of article bibliographies identified 235 potentially eligible English-language studies...
October 4, 2016: Clinical Orthopaedics and related Research
Raju Vaishya, Vipul Vijay, Ram Sagar Pandit, Amit K Agarwal
INTRODUCTION: Fractures of the distal humerus are a rare entity accounting for approximately 2% of the humeral fractures. Non union of the distal humerus is further rare and poses a major challenge. These fractures usually respond to open reduction and bone grafting but some may fail multiple surgical attempts at union and hence are labelled as "resistant" non union. We report a case of resistant non union of the distal humerus which was managed by total elbow arthroplasty. CASE PRESENTATION: A 49-year-old male presented to the out patient department with history of a compound comminuted fracture of the distal end of the humerus approximately 25 years back...
April 2016: Journal of Orthopaedic Case Reports
J Herranz-Aparicio, J Marques, N Almendros-Marqués, C Gay-Escoda
In order to choose the appropriate implant size and to prevent complications, an oral surgeon must know the size and shape of the mandible. In the posterior mandibular region, a lingual undercut is often found and could represent a difficulty hard to manage if a lingual or buccal perforation occur. _A large series of computed tomography (CT) images of first molar mandible was evaluated and it the bone morphology and the prevalence and the degree of the lingual concavity in the first molar region was studied...
October 1, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
C D Smith, S J Booker, H S Uppal, J Kitson, T D Bunker
AIMS: Despite the expansion of arthroscopic surgery of the shoulder, the open deltopectoral approach is increasingly used for the fixation of fractures and arthroplasty of the shoulder. The anatomy of the terminal branches of the posterior circumflex humeral artery (PCHA) has not been described before. We undertook an investigation to correct this omission. PATIENTS AND METHODS: The vascular anatomy encountered during 100 consecutive elective deltopectoral approaches was recorded, and the common variants of the terminal branches of the PCHA are described...
October 2016: Bone & Joint Journal
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