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Bone anatomy

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https://www.readbyqxmd.com/read/29332169/measuring-cochlear-duct-length-in-asian-population-worth-giving-a-thought
#1
Mohnish Grover, Shitanshu Sharma, Shashank Nath Singh, Tanmaya Kataria, Rajendra Singh Lakhawat, Man Prakash Sharma
INTRODUCTION: The anatomy of the cochlea forms the basis for a successful cochlear implantation. Cochlear duct length (CDL) is defined as the length of the scala media as measured from the middle of the round window to helicotrema. Preoperative measurement of CDL is particularly important when precise intracochlear electrode array placement is desired. It can be done both histologically and radiologically. Preoperative high-resolution computed tomography (HRCT) scan which forms an integral part of cochlear implant workup is a useful tool to calculate CDL using 3D reconstructions...
January 13, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29330991/diaphyseal-nutrient-foramina-in-dried-human-adult-long-bones-of-lower-limb-in-pakistan
#2
Ejaz Afzal, Fatima Sherin, Omair Khan, Noaman Hussain Siddiqui
BACKGROUND: osteogenesis needs circulation of blood in the bones. Bone growth, repair of fracture, maintenance of bone vitality and other injures also need blood circulation in proper way. Blood is allowed to flow via holes in the diaphysis, which are called as nutrient foramina. METHODS: The crosssectional study was done in the department of Anatomy, Ayub and Khyber Medical College (Osteology Sections). The aim was to observe diaphyseal nutrient foramina in the human long bones of the lower limb...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29330957/behavioral-correlates-of-cranial-muscle-functional-morphology
#3
Adam Hartstone-Rose, Sharlene E Santana
This issue of the Anatomical Record is the first of a two-volume set that focuses on new investigations into behavioral correlates of muscle functional morphology. Much of the research on functional morphology and adaptation to specific functional niches focuses on the shapes of hard-tissues-bones and teeth. Investigations into soft-tissue anatomy tend to be predominantly descriptive with only brief allusion to ontogenetic or evolutionary origins of structures. When muscles are included in analyses of functional systems, their function tends to be oversimplified-usually considered a simple force vector connecting two osteological points, with the force treated as a constant derived from some simple calculation of muscle size...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29325963/surgical-anatomy-of-the-eustachian-tube-for-endoscopic-transnasal-skull-base-surgery-a-cadaveric-and-radiological-study
#4
Noritaka Komune, Satoshi Matsuo, Koichi Miki, Yojiro Akagi, Ryota Kurogi, Koji Iihara, Takashi Nakagawa
OBJECTIVE: The endoscopic endonasal approach to the anatomically complex lateral skull base presents technical challenges. The use of the Eustachian tube as a landmark to identify the petrous internal carotid artery has recently been reported, and this study aims to define the anatomical relationship between the Eustachian tube and its surrounding structures using cadaveric dissection and radiologic analysis. METHODS: To clarify the relationship of the Eustachian tube with its surrounding structures, we performed endoscopic and microscopic dissection of four adult cadaveric heads, and analyzed computed topography scans from 20 patients...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29325763/clinical-experience-with-three-dimensional-printing-techniques-in-orthopedic-trauma
#5
Ji Wan Kim, Yongkoo Lee, Joonho Seo, Jai Hyung Park, Yong Min Seo, Sung Soo Kim, Hyun Chul Shon
BACKGROUND: To report our experiences with the use of three-dimensional (3D) printing in the field of orthopedic trauma. METHODS: This retrospective study enrolled 24 patients from three university teaching hospitals in whom 3D printing technique was applied: 14 patients with acetabular fractures and 10 patients with clavicular shaft fractures. We summarized our experiences with 3D printed bone models. RESULTS: Three-dimensional printed acetabular models improved understanding of complex acetabular anatomy and fracture pattern to plan the optimal positioning of a reduction clamp and the trajectory of screws...
January 8, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29325320/-anatomy-research-of-cervical-laminoplasty-with-preservation-of-the-posterior-ligament-complex
#6
H R Zhao, B S Xu, P F Shao, J J Xia, Q Zhang, W H Zhang
Objective: To evaluate the feasibility of cervical laminoplasty with preservation of the posterior ligament complex for enlarging the spinal canal. Methods: Six up-to-standard human corpse specimens were divided into two groups by simple randomization (start from C4 group, S4; start from C5 group, S5; 3 corpses in each group). Decompression operation of C3-C6 level was performed in a predetermined sequence by using the new procedure with preservation of the posterior ligament complex.The basic depth of spinal canal was measured with a depth gauge at fixed point after the right bone groove of single level was completed...
December 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29319638/anomalous-sphenoid-diploe-vein-case-report-highlighting-the-value-of-careful-ct-evaluation-prior-to-decompression-surgery
#7
Michael Rafaelof, Hamzah Mustak, Daniel B Rootman
Lateral bony decompression may offer several biomechanical advantages and has become a commonly used surgical approach. Preoperative imaging plays a key role in surgical planning by providing information about the locoregional anatomy. The marrow space of the greater wing of the sphenoid is a focal point of the decompression surgery based on the volume that it occupies. Several vessels pass through the sphenoid bone, but most are small caliber vessels. The authors describe a case of an uncommon anatomical variant of the cranial diploic venous system in which the anterior transverse diploic vessel traverses the marrow space of the sphenoid...
January 9, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29315066/-autotransplantation-of-a-maxillary-incisor-and-orthodontic-care-a-case-study
#8
Valentine Charpentier, Masrour Makaremi, François de Brondeau
INTRODUCTION: Severely impacted teeth with atypical root anatomy do not respond well to orthodontic traction after surgical exposure. Consequently, they are often removed, but replacing them with dental prostheses can prove difficult in patients who are still growing. Thus, autotransplantation seems to be the only way to preserve a natural tooth and the alveolar bone. MATERIALS AND METHODS: An upper central incisor impacted in the region of the nasal cavities with an open apex was diagnosed in an 8...
December 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/29312840/relationship-between-the-intersesamoid-ligament-and-sesamoid-bones-in-cadaveric-feet-with-hallux-valgus
#9
Regina C Fiacco, Garen M Ream, Charlotte Wilson, R Shane Tubbs, Marios Loukas, Piotr B Kozlowski, Anthony C DiLandro, Kevin T Jules, Anthony V D'Antoni
There is heterogeneity in the literature regarding the anatomy, exact location, and definition of the intersesamoid ligament (IL). Anatomic knowledge of the IL and its variations are important for surgeons who undertake corrective surgery for hallux abducto valgus (HAV). The IL was dissected in 16 feet from 32 formalin-fixed cadavers (12 females, four males; mean age at death, 76.6 years) to examine its morphology. The length, width, and thickness of its constituent bands were recorded with a digital caliper...
November 3, 2017: Curēus
https://www.readbyqxmd.com/read/29307033/centile-charts-for-cranial-sutures-in-children-younger-than-1-year-based-on-ultrasound-measurements
#10
Katya Rozovsky, Nicholas James Barrowman, Elka Miller
BACKGROUND: Cranial US allows for the evaluation of premature closure (synostosis) or abnormal widening of the cranial sutures. An understanding of the normal anatomy is required to help define the presence or absence of abnormality. OBJECTIVE: To provide reference for normal ultrasound measurements of cranial sutures during the child's first year. MATERIALS AND METHODS: We included children ages 0 to 12 months who were referred to the hospital during 2011-2013 for radiographic evaluation of cranial sutures...
January 6, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29289707/periodontal-materials-and-cell-biology-for-guided-tissue-and-bone-regeneration
#11
REVIEW
Mihai Andrei, Anca Dinischiotu, Andreea Cristiana Didilescu, Daniela Ionita, Ioana Demetrescu
The present review is intended to find links between periodontal materials of the dentomaxillary apparatus and cell biology at the beginning of a century fraught with various forms of periodontal diseases and needing new treatment strategies. The manuscript has two different parts. The first describes the anatomy of tooth supporting structures, as well as related pathologies. The second part is related to cell and molecular biology in the context of periodontal regeneration.
December 28, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29286059/functional-anatomy-of-the-nasal-bones-and-adjacent-structures-consequences-for-nasal-surgery
#12
M Popko, S A M W Verlinde-Schellekens, E H Huizing, R L A W Bleys
The periosteum of the nasal bones, the periosteal-perichondrial nasal envelope, and the cartilaginous support of the bony vault were studied in serial coronal sections of four human cadaver noses. To differentiate between the various tissue components, the sections were stained according to Mallory-Cason and Verhoeff-Van Gieson stain. The results demonstrated: 1. the presence of clearly distinguishable layers of the periosteum covering the nasal bones; 2. the presence of a continuous periosteal-perichondrial covering of the bony and cartilaginous nasal vaults; 3...
December 29, 2017: Rhinology
https://www.readbyqxmd.com/read/29284978/successful-surgical-management-of-palatogingival-groove-using-platelet-rich-fibrin-and-guided-tissue-regeneration-a-novel-approach
#13
J V Karunakaran, Susan Mathew Fenn, N Jayaprakash, N Ragavendran
Palatogingival groove also known as radicularlingual groove is a developmental anomaly involving the lingual surface of the maxillary incisors. They are inconspicuous, funnel-shaped, extend for varying distances on root surface and occur due to infolding of the hertwigs epithelial root sheath. This encourages adherence of microorganisms and plaque to levels significant for pathological changes resulting in endodontic and periodontal lesions. The variations in anatomy of the tooth as a cause of pulp necrosis in teeth of anterior maxillary segment should be considered by the clinician when other etiological factors are ruled out...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29284976/pterygoid-implant-for-atrophic-posterior-maxilla
#14
V R Balaji, R Lambodharan, D Manikandan, S Deenadayalan
Replacement of missing teeth in the posterior maxilla is always a challenge for the treating implant surgeon as the posterior maxilla has several obstacles in the form of quality, quantity, the anatomy of the maxillary sinus, and inaccessibility. To overcome these deficiencies, several surgical procedures such as sinus lift, bone augmentation, tilted implants, short implants, and zygomatic implants were tried. Since these procedures have their own limitations, pterygomaxillary region provides us an excellent place for placement of implant and rehabilitation of posterior maxilla...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29279813/the-assessment-of-fusion-following-sacroiliac-joint-fusion-surgery
#15
Hamid Abbasi, John A Hipp
Sacroiliac joint fusions (SIJF) have been the subject of many research studies. The technical success of an SIJF is in part determined by whether osseous bridging occurs across the sacroiliac joint (SIJ). However, no validated SIJF assessment method has been described. Our objective was to document previously described SIJF assessment methods and define and validate a detailed assessment system for SIJF. Our results are only intended to establish computed tomography (CT)-based guidelines for SIJF to be used in a subsequent large clinical study to correlate them with clinical outcomes...
October 20, 2017: Curēus
https://www.readbyqxmd.com/read/29277494/accessory-occipital-suture-mimicking-fracture-in-head-trauma
#16
Ibrahim F Naldemir, Derya Guclu, H Baki Altınsoy, H Berk Canga, Omer Onbas
The occipital bone is a complex structure due to its anatomy and accessory sutures. Fracture - accessory suture differential diagnosis should be performed carefully in patients with a history of head trauma [4]. In this case report we wanted to emphasize that accessory sutures can be difficult to diagnose in patients with head trauma. We also specified the points to be considered in the suture - fracture differentional diagnosis. A bilateral, symmetrical fissure line was observed in the occipital bone basal part of the patient who was admitted to our emergency department due to head trauma...
December 21, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29276533/contraindications-and-complications-of-the-latarjet-procedure
#17
REVIEW
Peter Domos, Enricomaria Lunini, Gilles Walch
The Latarjet procedure is a well-known, safe and reliable technique to treat primary or recurrent anterior dislocations or subluxations, with or without hyperlaxity, with or without glenoid bone loss. Both the open and the arthroscopic methods produce excellent clinical results, with a low rate of recurrent instability. There have been concerns of a higher surgical complication rate associated with this procedure, however, large reviews reported an overall complication rate in the open Latarjet procedure of 15%...
January 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29259848/the-shell-morphology-of-the-latest-cretaceous-maastrichtian-trionychid-turtle-helopanoplia-distincta
#18
Walter G Joyce, Tyler R Lyson
Background: Helopanoplia distincta is an extinct soft-shelled turtle (Pan-Trionychidae) for which the type specimen is a fragmentary costal and the inguinal notch portion of the left hypoplastron from the Late Cretaceous (Maastrichtian) Lance Formation of Wyoming, USA that bear a distinct surface sculpture pattern consisting of raised tubercles. Over the course of the past few decades, a number of additional, fragmentary specimens from the Late Cretaceous (Maastrichtian) Hell Creek Formation of Montana and North Dakota have been referred to this taxon based on the presence of these tubercles, but a more complete understanding of the anatomy and phylogenetic relationships of this distinctive soft-shelled turtle is still outstanding...
2017: PeerJ
https://www.readbyqxmd.com/read/29258960/corticocancellous-bone-graft-vs-cancellous-bone-graft-for-the-management-of-unstable-scaphoid-nonunion
#19
J K Kim, J O Yoon, H Baek
INTRODUCTION: This study was undertaken to determine whether corticocancellous bone grafting and cancellous bone grafting differ in terms of bone union rate, restoration of scaphoid anatomy, and wrist function when unstable scaphoid nonunions are concomitantly treated by screw fixation. MATERIALS AND METHODS: This is retrospective cohort study. In Group A (17 patients), unstable scaphoid nonunion was treated with corticocancellous graft harvested from the iliac crest and headless compression screw using volar approach...
December 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29250462/cranial-osteology-of-the-pampathere-holmesina-floridanus-xenarthra-cingulata-blancan-nalma-including-a-description-of-an-isolated-petrosal-bone
#20
Timothy J Gaudin, Lauren M Lyon
The present study entails descriptions of several well-preserved skulls from the pampathere species Holmesina floridanus, recovered from Pliocene localities in central Florida and housed in the collections of the Florida Museum of Natural History. Bone by bone descriptions have allowed detailed reconstructions of cranial morphology. Cranial foramina are described and illustrated in detail, and their contents inferred. The first ever description of an isolated pampathere petrosal is also included. Cranial osteology of Holmesina floridanus is compared to that of Pleistocene species of Holmesina from both North and South America (Holmesina septentrionalis, Holmesina occidentalis), as well as to the other well-known pampathere genera, to closely related taxa among glyptodonts (Propalaehoplophorus), and to extinct and extant armadillos (Proeutatus, Euphractus)...
2017: PeerJ
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