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Bone anatomy

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https://www.readbyqxmd.com/read/27909674/minimally-invasive-quadriceps-tendon-harvest-and-graft-preparation-for-all-inside-anterior-cruciate-ligament-reconstruction
#1
Harris S Slone, William B Ashford, John W Xerogeanes
The quadriceps tendon is an infrequently used graft option for anterior cruciate ligament reconstruction despite favorable clinical results in the literature with low donor site morbidity. It is a versatile graft that can be harvested with bone or as a soft tissue graft alone. In addition, it can be used for anatomic, double-bundle, transtibial, and all-inside reconstructions. The unique characteristics of the quadriceps tendon allow for the ability to harvest a single-bundle large-diameter graft and minimize disruption of normal anatomy, which makes the quadriceps tendon an excellent choice for all-inside techniques...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909120/restoration-of-the-centre-of-rotation-in-primary-total-hip-arthroplasty-the-influence-of-acetabular-floor-depth-and-reaming-technique
#2
G Meermans, J Van Doorn, J-J Kats
AIMS: One goal of total hip arthroplasty is to restore normal hip anatomy. The aim of this study was to compare displacement of the centre of rotation (COR) using a standard reaming technique with a technique in which the acetabulum was reamed immediately peripherally and referenced off the rim. PATIENTS AND METHODS: In the first cohort the acetabulum was reamed to the floor followed by sequentially larger reamers. In the second cohort the acetabulum was only reamed peripherally, starting with a reamer the same size as the native femoral head...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27908187/dosimetric-characterization-of-mri-only-treatment-planning-for-brain-tumors-in-atlas-based-pseudo-ct-images-generated-from-standard-t1-weighted-mr-images
#3
Benjamin Demol, Christine Boydev, Juha Korhonen, Nick Reynaert
PURPOSE: Magnetic resonance imaging (MRI)-only radiotherapy treatment planning requires accurate pseudo-CT (pCT) images for precise dose calculation. The current work introduced an atlas-based method combined with MR intensity information. pCT analyses and Monte Carlo dose calculations for intracranial stereotactic treatments were performed. METHODS: Twenty-two patients, representing 35 tumor targets, were scanned using a 3D T1-weighted MRI sequence according to the clinical protocol...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27900289/deducing-a-mechanism-of-all-musculoskeletal-injuries
#4
Geoffrey Verrall, Bronwyn Dolman
BACKGROUND: The mechanism of musculoskeletal (MSK) injuries is not well understood. This research applies principles of elastic motion to the anatomy and movement patterns of MSK structures. From this an insight into the application and timing of forces on MSK structures can be established and the mechanism/s of injury derived. METHODS CURRENT KNOWLEDGE: All MSK structures demonstrate varying degrees of elasticity. Movement occurs primarily as a consequence of Muscle Tendon Unit (MTU) shortening...
April 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27898160/haptic-feedback-improves-surgeons-user-experience-and-fracture-reduction-in-facial-trauma-simulation
#5
Sabine Girod, Sara C Schvartzman, Dyani Gaudilliere, Kenneth Salisbury, Rebeka Silva
Computer-assisted surgical (CAS) planning tools are available for craniofacial surgery, but are usually based on computer-aided design (CAD) tools that lack the ability to detect the collision of virtual objects (i.e., fractured bone segments). We developed a CAS system featuring a sense of touch (haptic) that enables surgeons to physically interact with individual, patient-specific anatomy and immerse in a three-dimensional virtual environment. In this study, we evaluated initial user experience with our novel system compared to an existing CAD system...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27896364/-proximal-rupture-of-the-hamstring-tendon-from-clinical-presentation-to-diagnosis-and-therapy
#6
S Bauer, M Riegger, K J Friedrich, W Reichert, W G Blakeney, C Haag
Rupture of the proximal tendon enthesis of the hamstring muscle (ICM) accounts for approximately 10% of all injuries of the ICM. It occurs most commonly in athletes and active middle-aged individuals. The complete rupture of all three tendons in active patients is generally seen as an indication for surgical repair of the tendon enthesis; however, the correct diagnosis is often not reached in a timely manner. This can lead to prolonged symptoms with pain, weakness and neuralgia. Operative treatment consists of anchor repair of the tendons resulting in good clinical outcome in several case series...
November 28, 2016: Der Unfallchirurg
https://www.readbyqxmd.com/read/27891421/imaging-modality-of-choice-for-pre-operative-cochlear-imaging-hrct-vs-mri-temporal-bone
#7
Poornima Digge, Rajendra N Solanki, Dipali C Shah, Rajesh Vishwakarma, Sandeep Kumar
INTRODUCTION: Congenital inner ear malformations occur as a result of the arrest or aberrance of inner ear development due to the heredity, gene mutation or other factors. Ever since the availability of cochlear implants, pre-operative evaluation by imaging of temporal bone has gained much attention. Precise selection of the candidate for cochlear implant dependent on preoperative radiological investigations. Only CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) can provide a better picture of anatomy and pathology...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891326/determining-angle-of-humeral-torsion-using-image-software-technique
#8
Sachin Patil, Madhu Sethi, Neelam Vasudeva
INTRODUCTION: Several researches have been done on the measurement of angles of humeral torsion in different parts of the world. Previously described methods were more complicated, not much accurate, cumbersome or required sophisticated instruments. AIM: The present study was conducted with the aim to determine the angles of humeral torsion with a newer simple technique using digital images and image tool software. MATERIALS AND METHODS: A total of 250 dry normal adult human humeri were obtained from the bone bank of Department of Anatomy...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27889918/inner-ear-labyrinth-anatomy-of-monotremes-and-implications-for-mammalian-inner-ear-evolution
#9
Julia A Schultz, Ulrich Zeller, Zhe-Xi Luo
The monophyletic clade Monotremata branches early from the rest of the mammalian crown group in the Jurassic and members of this clade retain many ancestral mammalian traits. Thus, accurate and detailed anatomical descriptions of this group can offer unique insight into the early evolutionary history of Mammalia. In this study, we examine the inner ear anatomy of two extant monotremes, Ornithorhynchus anatinus and Tachyglossus aculeatus, with the primary goals of elucidating the ancestral mammalian ear morphology and resolving inconsistencies found within previous descriptive literature...
November 27, 2016: Journal of Morphology
https://www.readbyqxmd.com/read/27870347/internal-bone-architecture-in-the-zygoma-of-human-and-pan
#10
Leslie Pryor McIntosh, David S Strait, Justin A Ledogar, Amanda L Smith, Callum F Ross, Qian Wang, Lynne A Opperman, Paul C Dechow
The internal and external anatomy of the primate zygoma is central to orofacial function, health, and disease. The importance of variation in its gross morphology across extinct and extant primate forms has been established using finite element analysis, but its internal structure has yet to be explored. In this study, µCT is used to characterize trabecular bone morphometry in two separate regions of the zygoma of humans and Pan. Trabecular anisotropy and orientation are compared with strain orientations observed in trabecular regions of finite element models of four Pan crania...
December 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27867120/transforaminal-resection-of-cervical-dumbbell-schwannomas-in-patients-with-additional-tumors
#11
Ji Zhang, Xiang-Heng Zhang, Zi-Feng Wang, You-Ping Li, Zheng-Quan Zhu, Ji-Cheng Sun, Zheng-He Chen, Shao-Yong Wu, Ke Sai, Jian Wang, Yong-Gao Mou, Zhong-Ping Chen
BACKGROUND: It is rare for two primary tumors to occur simultaneously in a patient. Management of cervical dumbbell schwannomas (CDSs) with concurrent tumors (CTs) requires a specific neurosurgical strategy. The primary objective of this study is to investigate surgical strategies for CDSs with CTs while preserving as much of the mechanically relevant bone structures as possible. MATERIAL AND METHODS: Twelve patients with concurrent CTs and CDSs were identified from three medical centers...
November 17, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27861650/influence-of-four-different-abutment-materials-and-the-adhesive-joint-of-two-piece-abutments-on-cervical-implant-bone-and-soft-tissue
#12
Christian Mehl, Volker Gaβling, Stephan Schultz-Langerhans, Yahya Açil, Telse Bähr, Jörg Wiltfang, Matthias Kern
PURPOSE: The main aim of this study was to evaluate the influence of four different abutment materials and the adhesive joint of two-piece abutments on the cervical implant bone and soft tissue. MATERIALS AND METHODS: Sixty-four titanium implants (Camlog Conelog; 4.3 ± 9 mm) were placed bone level into the edentulous arches of four minipigs. Four different types of abutments were placed at implant exposure: zirconium dioxide, lithium disilicate, and titanium bonded to a titanium luting base with resin cement; one-piece titanium abutments served as the control...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27858088/specific-branches-of-hypoglossal-nerve-to-genioglossus-muscle-as-a-potential-target-of-selective-neurostimulation-in-obstructive-sleep-apnea-anatomical-and-morphometric-study
#13
Philippe Delaey, Jérôme Duisit, Catherine Behets, Thierry Duprez, Pierre Gianello, Benoît Lengelé
PURPOSE: To determine the ideal implantation site for selective tongue neurostimulation in obstructive sleep apnea, anatomy of the distal branching of the hypoglossal nerve (HGN) was revisited. METHODS: The HGN distal course and intramuscular distribution to the tongue muscles were studied in 17 embalmed and 5 fresh heads (age 60-98, BMI 20-35). Medial branches supplying selectively the genioglossus (GG) muscle were identified. Then, the distinct bundles entering the oblique (GGo) and horizontal (GGh) parts of the GG were located...
November 17, 2016: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27857868/surgical-anatomy-of-the-medial-wall-of-the-orbit-in-14-human-cadavers
#14
Juan R Gras-Cabrerizo, Maria Martel-Martin, Jacinto Garcia-Lorenzo, Fernando Rodríguez-Álvarez, Joan R Montserrat-Gili, Rosa Mirapeix-Lucas, Humbert Massegur-Solench
Objective The aim of our study is to present the anatomical landmarks to perform an endoscopic endonasal approach to the medial wall of the orbit (EEAMO). Material and Methods We performed 14 complete nasal and orbital endoscopic dissections in 7 adult cadaveric heads. Results The EEAMO provides a surgical corridor between the medial rectus muscle superiorly and the inferior rectus muscle inferiorly .The mean distance between the ethmoidal crest and medial rectus muscle was 1.5 cm (range, 1.3-1.9 cm)...
December 2016: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/27857469/holding-versus-seeing-pathology-three-dimensional-printing-of-the-bony-pelvis-for-preoperative-planning-of-a-complex-pelvis-fracture-a-case-report
#15
Parang S Sanghavi, Bhavin G Jankharia
Pelvic injuries are not uncommon. The complex anatomy of the pelvic bones, the complex pattern of injuries, associated important structures such as neurovascular bundles, and difficult access make the reduction and fixation of these fractures difficult. Often the surgical outcomes are not satisfactory. Three-dimensional (3D) imaging using computed tomography (CT) scan (3DCT) has been the mainstay of preoperative evaluation since the 1980s, however, even with these images it may be difficult to understand complex injury patterns...
July 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/27857455/imaging-in-spinal-posterior-epidural-space-lesions-a-pictorial-essay
#16
Foram B Gala, Yashant Aswani
Spinal epidural space is a real anatomic space located outside the dura mater and within the spinal canal extending from foramen magnum to sacrum. Important contents of this space are epidural fat, spinal nerves, epidural veins and arteries. Due to close proximity of posterior epidural space to spinal cord and spinal nerves, the lesions present with symptoms of radiculopathy and/or myelopathy. In this pictorial essay, detailed anatomy of the posterior epidural space, pathologies affecting it along with imaging pearls to accurately diagnose them are discussed...
July 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/27833871/establishing-a-temporal-bone-laboratory-in-teaching-institutes-to-train-future-otorhinolaryngologists-and-fundamentals-of-temporal-bone-laboratory-considerations-and-requirements
#17
David Victor Kumar Irugu, Amit Chirom Singh, Kapil Sikka, J Bhinyaram, Suresh Chandra Sharma
Temporal bone dissection has important role in educating, and training the surgeons. Temporal bone has complicated three dimensional anatomy and it is challenging for young surgeons to understand and operate. Not knowing the anatomy may cause serious consequences to patient due to injury to vital structures. It is important to learn temporal bone harvesting techniques, preservation of specimens, fixation and to reduce the health hazards posed by these specimens by taking safety measures. Spending more time in temporal bone laboratory and repeated dissection of temporal bones provides the skills necessary in the operating room for future generation...
December 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/27833101/tracking-modern-human-population-history-from-linguistic-and-cranial-phenotype
#18
Hugo Reyes-Centeno, Katerina Harvati, Gerhard Jäger
Languages and genes arguably follow parallel evolutionary trajectories, descending from a common source and subsequently differentiating. However, although common ancestry is established within language families, it remains controversial whether language preserves a deep historical signal. To address this question, we evaluate the association between linguistic and geographic distances across 265 language families, as well as between linguistic, geographic, and cranial distances among eleven populations from Africa, Asia, and Australia...
November 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27831994/pseudarthrosis-repair-using-autologous-cultured-osteoblasts-in-complex-type-1-neurofibromatosis-spinal-deformity-a-case-report-and-review-of-the-literature
#19
Young-Hoon Kim, Genriech N Reoyan, Kee-Yong Ha, Chul-Kyu Kim
STUDY DESIGN: A case report and literature review. OBJECTIVE: To report a late dislocation of the vertebra caused by progressive dural ectasia combined with type-1 neurofibromatosis (NF-1) and the clinical results of pseudarthrosis repairs using autologous cultured osteoblasts. SUMMARY OF BACKGROUND DATA: NF-1 is a well-known genetic disorder that is commonly characterized by spinal deformities including kyphoscoliosis. Late dislocation of the vertebra resulting from progressive dural ectasia after surgical correction of NF-1 scoliosis is a very rare occurrence, and pseudarthrosis frequently develops after surgical intervention for this complex spinal deformity...
November 15, 2016: Spine
https://www.readbyqxmd.com/read/27826909/updates-on-preoperative-planning-limb-deformity-analysis-and-surgical-correction-for-the-growing-children-epos-meeting-marseille-2015-proceedings
#20
Eitan Segev
Successful deformity correction depends on establishing the aetiology of the deformity. Clinical examination, additional laboratory tests and consultation with other experts may be needed to complete the workup. Imaging studies should include full-length standing X-rays in all relevant planes, and additional imaging modalities like computed tomography (CT) and magnetic resonance imaging (MRI) may add information on bone morphology and growth plates' anatomy. Based on the data, analysis of the deformity and length differences is performed, followed by prediction of deformities at skeletal maturity...
November 8, 2016: Journal of Children's Orthopaedics
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