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cadaver dissection

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https://www.readbyqxmd.com/read/28439406/angiographic-anatomy-of-the-extracranial-and-intracranial-portions-of-the-internal-carotid-arteries-in-donkeys
#1
Nurul Hayah Khairuddin, Martin Sullivan, Patrick J Pollock
BACKGROUND: In horses, the extracranial and intracranial pathway of the internal carotid artery has been described. The extracranial pathway of the internal carotid artery begins at the carotid termination and runs on the dorsal surface of the medial compartment of the guttural pouch. Thereafter the internal carotid artery passes through the foramen lacerum to continue intracranially, forming part of the rostrolateral quadrants of the cerebral arterial circle (Circle of Willis). The objectives of this study were to define and record the anatomy of the carotid arterial tree and the internal carotid artery in donkeys using angiographic techniques...
2017: Irish Veterinary Journal
https://www.readbyqxmd.com/read/28435114/the-decussating-fibers-of-the-lumbar-thoracolumbar-fascia-a-landmark-for-identifying-the-l5-spinous-process
#2
Fernando Alonso, Tarush Rustagi, Christian Fisahn, Doniel Drazin, Brady Gardner, Joe Iwanaga, Jens R Chapman, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: The thoracolumbar fascia has been well studied and is known to have crisscrossing fibers. Based on surgical experience, we have hypothesized that the decussating fibers of this fascia may indicate a specific vertebral level. Therefore, the following anatomical study was performed. METHODS: Twenty adult fresh frozen cadavers aged 72-84 years old at death were placed in the prone position and the skin of the lumbar and upper sacrum was removed. Careful attention was given to the thoracolumbar fascia and any fibers of it that grossly crossed the midline to inderdigitate with its contralateral counterpart...
April 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28432417/exploring-the-possibility-of-a-retrograde-embolism-pathway-from-the-facial-artery-to-the-ophthalmic-artery-system-in-vivo
#3
Hui Zheng, Lihong Qiu, Zonghui Liu, Yingjun Su, Xinyuan Pan, Sha Liu, Chenggang Yi
BACKGROUND: Blindness caused by soft tissue fillers is an extremely low-probability event, but it results in great concern because of its devastating consequences. Currently, the mechanism of an embolism is usually considered to be an accidental injection of fillers into the blood vessels of the face, such as a facial artery, and then retrograding into the ophthalmic artery system, which causes retinal ischemic necrosis. In addition, previous studies have shown that there are anastomoses between facial arteries and branches of the ophthalmic artery in cadavers...
April 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28428918/the-safety-of-the-thenar-portal-an-anatomical-study-of-the-thumb-carpometacarpal-arthroscopy
#4
Yong-Wei Pan, Leung-Kim Hung
Purpose To define the localization of the distal course of the motor branches of median nerve (MBMN) and its arborization and its quantitative relationships to the thenar portal of the carpometacarpal (CMC) joint in the hope of evaluating the safety of this portal. Method In 16 embalmed cadaveric upper extremities, the localization of the course of the MBMN and its arborization were defined. In 14 fresh-frozen cadaver upper extremities, the CMC arthroscopic portals, 1-U, 1-R, and a thenar portal, were established, after which the limbs were dissected...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28417040/unusual-branching-pattern-of-the-lateral-cord-of-the-brachial-plexus-associated-with-neurovascular-compression-case-report
#5
Hitendra K Loh, Shikha Singh, Rajesh K Suri
The brachial plexus consists of a network of nerves that innervates the upper limbs and its musculature. We report a rare formation of the lateral cord of the brachial plexus observed during the dissection of a 47-year-old male cadaver at the Department of Anatomy, Vardhman Mahavir Medical College, New Delhi, India, in 2016. The lateral cord was exceptionally long with twin lateral pectoral nerves and twin lateral roots of the median nerve. The proximal lateral root of the median nerve was thin in comparison to the medial root of the median nerve...
February 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28417038/anomalous-innervation-of-the-median-nerve-in-the-arm-in-the-absence-of-the-musculocutaneous-nerve
#6
Khursheed Raza, Seema Singh, Neerja Rani, Raghav Mishra, Kamakshi Mehta, Saroj Kaler
The brachial plexus innervates the upper extremities. While variations in the formation of the brachial plexus and its terminal branches are quite common, it is uncommon for the median nerve to innervate the muscles of the arm. During the dissection of an elderly male cadaver at the Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India, in 2016, the coracobrachialis muscle was found to be supplied by a direct branch from the lateral root of the median nerve and the musculocutaneous nerve was absent...
February 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28417037/additional-muscle-slip-of-bicipital-aponeurosis-and-its-anomalous-relationship-with-the-median-cubital-vein
#7
Nandini Bhat, Kumar M R Bhat, Antony S D'Souza, Sushma R Kotian
The cubital region of the arm is a common site for recording blood pressure, taking blood for analysis and administering intravenous therapy and blood transfusions. During the routine dissection of a 70-year-old male cadaver at the Kasturba Medical College, Manipal, Karnataka, India, in 2015, it was observed that the aponeurotic insertion of the biceps brachii muscle divided into two slips. The medial slip fused normally with the deep fascia of the forearm, while flexor carpi radialis muscle fibres originated from the lateral slip...
February 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28413740/relationship-of-the-median-and-radial-nerves-at-the-elbow-application-to-avoiding-injury-during-venipuncture-or-other-invasive-procedures-of-the-cubital-fossa
#8
Vlad Voin, Joe Iwanaga, Juan P Sardi, Christian Fisahn, Marios Loukas, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: The median and radial nerves are two important neural structures found in the cubital fossa. The trajectory and landmarks used to identify their location are important when procedures are done in this area. METHODS AND MATERIALS: Ten fresh-frozen cadavers were dissected (20 upper limbs) and measurements were taken from the medial epicondyle to the median and radial nerves as well as to the lateral epicondyle of each limb. RESULTS: The distance between the medial epicondyle and the median nerve was found to be three centimeters with a range of 2...
March 13, 2017: Curēus
https://www.readbyqxmd.com/read/28412565/the-use-of-a-novel-perfusion-based-cadaveric-simulation-model-with-cerebrospinal-fluid-reconstitution-comparing-dural-repair-techniques-a-pilot-study
#9
Joshua Bakhsheshian, Ben A Strickland, Neil N Patel, Andre M Jakoi, Michael Minneti, Gabriel Zada, Frank L Acosta, Patrick C Hsieh, Jeffrey C Wang, John C Liu, Martin H Pham
BACKGROUND CONTEXT: Watertight dural repair is crucial for both incidental durotomy and closure after intradural surgery. PURPOSE: To describe a perfusion-based cadaveric simulation model with cerebrospinal-fluid (CSF) reconstitution and to compare spine dural repair techniques. STUDY DESIGN/SETTING: Fresh Tissue Dissection Laboratory. SAMPLE SIZE: 8 fresh human cadavers. OUTCOME MEASURES: A watertight closure was achieved when pressurized saline up to 40 mm Hg did not cause further CSF leakage beyond the suture lines...
April 12, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28409134/anatomical-variations-of-pronator-teres-muscle-predispositional-role-for-nerve-entrapment
#10
Edie Benedito Caetano, Luiz Ângelo Vieira, Fábio Antonio Anversa Sprovieri, Guilherme Camargo Petta, Maurício Tadeu Nakasone, Bárbara Lívia Correa Serafim
OBJECTIVE: To assess the anatomical variations of the pronator teres muscle (PTM) and its implication in the compression of the median nerve, which passes through the humeral and ulnar heads of the PTM. METHODS: For the present study, 100 upper limbs from human cadavers from the anatomy laboratory were dissected. Forty-six specimens were male and four, female, whose aged ranged from 28 to 77 years; 27 were white and 23, non-white. A pilot study consisting of six hands from three fresh cadaver dissections was conducted to familiarize the authors with the local anatomy; these were not included in the present study...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28408248/extraforaminal-compression-of-the-l5-nerve-an-anatomical-study-with-application-to-failed-posterior-decompressive-procedures
#11
R Shane Tubbs, Joe Iwanaga, Islam Aly, Marc D Moisi, David R Hanscom, Jens R Chapman, Marios Loukas, Rod J Oskouian
This anatomical study was performed to elucidate the pertinent foraminal and lateral L5 nerve anatomy to enhance our understanding of possible neurologic causes of failed decompression surgery. Persistent extraforaminal L5 nerve compression is a possible cause of persistent symptoms following lumbosacral surgery. The amount of extraforaminal space for the L5 ventral ramus was examined in fifty adult human skeletons (100 sides). Based on morphology, the specimens were then categorized (types I-IV) on the basis of the bony space available for the nerve at this location...
April 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28405064/anatomic-relation-between-single-incision-slings-and-the-obturator-vessels
#12
Amy L O'Boyle, Christopher P Chung, Wilma Larsen
The risk of arterial vascular injury within the retropubic space is a potentially life-threatening complication associated with mid-urethral sling placement for the treatment of female stress urinary incontinence. To determine the relationship between the major blood vessels and a single incision sling, these slings were placed in 12 fresh female cadavers. Following the insertion of each sling, the retropubic space was dissected and sling placement was observed relative to the obturator neurovascular bundle bilaterally...
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28399657/cadaveric-evaluation-of-dorsal-intermetatarsal-approach-for-plantar-plate-and-lateral-collateral-ligament-repair-of-the-lesser-metatarsophalangeal-joints
#13
Phinit Phisitkul, Vinay Hosuru Siddappa, Tinnart Sittapairoj, Jessica E Goetz, Bryan D Den Hartog, John E Femino
BACKGROUND: Access to the plantar plate has been described using either a plantar approach or an extensive dorsal approach that required complete joint destabilization and often a metatarsal osteotomy. Clinical scenarios related to plantar plate tear vary and the pathologies in early stages are frequently limited to unilateral soft tissue structures; a less invasive operative approach may be possible. A novel approach requiring a release of only the lateral collateral ligament and the lateral half of the plantar plate is presented in this cadaver model; the extent of joint exposure possible is described...
April 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28399553/rectus-capitis-posterior-minor-histological-and-biomechanical-links-to-the-spinal-dura-mater
#14
Gabriel Venne, Brian J Rasquinha, Manuela Kunz, Randy E Ellis
STUDY DESIGN: Serial histological investigation was performed on 10 cadaveric specimens and biomechanical tests were performed on five specimens, both focused on the tissue connexion between the rectus capitis posterior minor (RCPMi) and the spinal dura. OBJECTIVE: This study had two components: to clarify the microscopic structure of the tissue link between RCPMi and the dura mater, and to evaluate the mechanical role of this tissue complex. SUMMARY OF BACKGROUND DATA: Dissection-based and imaging-based reports have suggested a connective tissue link between the RCPMi and the dura mater at the posterior-atlanto-occipital (PAO) level...
April 15, 2017: Spine
https://www.readbyqxmd.com/read/28399552/anatomic-relationship-between-right-recurrent-laryngeal-nerve-and-cervical-fascia-and-its-application-significance-in-anterior-cervical-spine-surgical-approach
#15
Jianlin Shan, Heng Jiang, Dajiang Ren, Chongwei Wang
STUDY DESIGN: An anatomic study of anterior cervical dissection of 42 embalmed cadavers. OBJECTIVE: The aim was to study the anatomic relationship between recurrent laryngeal nerve (RLN) and cervical fascia combined with the requirements in anterior cervical spine surgery (ACSS). SUMMARY OF BACKGROUND DATA: There has been no systematic research about how to avoid RLN injury in anterior cervical spine surgical approach from the aspect of the anatomic relationship between RLN and cervical fascia...
April 15, 2017: Spine
https://www.readbyqxmd.com/read/28398696/accuracy-of-sonography-in-plantar-plate-tears-in-cadavers
#16
Michael Stone, William Eyler, Joshua Rhodenizer, Marnix van Holsbeeck
OBJECTIVES: Sonography is often used in the evaluation of forefoot disorders, and its use has been suggested in the diagnosis of plantar plate tears. This study aimed to assess the accuracy of sonography in the diagnosis of plantar plate tears of the lesser digits using gross dissection as the reference standard. METHODS: The second through fifth digits of 6 cadavers were examined with sonography to evaluate for plantar plate tears. The examination was performed by a single musculoskeletal radiologist in longitudinal and short axes, and plates were graded as torn or intact...
April 11, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28398291/fine-dissection-of-the-tarsal-tunnel-in-60-cases
#17
Y Yang, M L Du, Y S Fu, W Liu, Q Xu, X Chen, Y J Hao, Z Liu, M J Gao
The fine dissection of nerves and blood vessels in the tarsal tunnel is necessary for clinical operations to provide anatomical information. A total of 60 feet from 30 cadavers were dissected. Two imaginary reference lines that passed through the tip of the medial malleolus were applied. A detailed description of the branch pattern and the corresponding position of the posterior tibial nerve, posterior tibial artery, medial calcaneal nerve and medial calcaneal artery was provided, and the measured data were analyzed...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28394676/communication-of-contrast-in-the-flexor-hallucis-longus-tendon-with-other-pedal-tendons-at-the-master-knot-of-henry
#18
Sayed Ali, Nicole L Griffin, Whitney Ellis, Andrew J Meyr
It is important to have a full appreciation of lower-extremity anatomical relationships before undertaking diabetic foot surgery. We sought to evaluate the potential for communication of the flexor hallucis longus (FHL) tendon with other pedal tendons and plantar foot compartments at the master knot of Henry and to provide cadaveric images and computed tomographic (CT) scans of such communications. Computed tomography and subsequent anatomical dissection were performed on embalmed cadaveric limbs. Initially, 5 to 10 mL (1:4 dilution) of iohexol and normal saline was injected into the FHL sheath as it coursed between the two hallux sesamoids...
March 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28390161/sonographic-visualization-of-the-posterior-cutaneous-nerve-of-the-forearm-technique-and-validation-using-perineural-injections-in-a-cadaveric-model
#19
Eugene Maida, Mary M Chiavaras, Elena J Jelsing, Shawn W O'Driscoll, Wojciech Pawlina, Jay Smith
OBJECTIVES: To determine the ability to sonographically identify the posterior cutaneous nerve of the forearm (PCNF) and its distal epicondylar branches using sonographically guided perineural injections in an unembalmed cadaveric model. METHODS: A single experienced operator used a 12-3-MHz linear array transducer to identify the PCNF and its distal epicondylar region branches in 10 unembalmed cadaveric specimens (6 right and 4 left) obtained from 10 donors. Sonographically guided perineural PCNF injections were then completed with a 22-gauge, 38-mm stainless steel needle to deliver 0...
April 8, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28386838/minimally-invasive-medial-supraorbital-combined-subfrontal-interhemispheric-approach-to-the-anterior-communicating-artery-complex-a-cadaveric-study
#20
Alexander Spiessberger, F Baumann, E Nevzati, K F Kothbauer, J Fandino, C Muroi
INTRODUCTION: In selected cases, microsurgical clipping remains a valuable treatment alternative to endovascular occlusion of anterior communicating artery (AComA) aneurysms. Their clipping is challenging and carries a risk of postsurgical cognitive impairment. We evaluate the microsurgical anatomy of a new, minimally invasive combined interhemispheric-subfrontal approach to the AComA complex via a medial supraorbital craniotomy. METHODS: In this descriptive anatomic study, four alcohol-embedded, silicon-injected human cadaver heads were used...
April 7, 2017: Acta Neurochirurgica
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