The Blood Supply to the Canine Palmar Metacarpal Sesamoid Bones

1995 ◽  
Vol 08 (02) ◽  
pp. 76-81 ◽  
Author(s):  
M. A. Cake ◽  
R. A. Read
Keyword(s):  
Blood Supply ◽  
Vascular Supply ◽  
Arterial Supply ◽  
Sesamoid Bones ◽  
Vascular Compromise

SummaryEleven canine forelimbs were examined using either gross dissection or a modified Spalteholz technique to investigate the blood supply of the palmar metacarpal sesamoid bones. In addition, the sesamoid bones, from two prepared skeletons, were examined for the presence of vascular foramina. Multiple vascular foramina were observed over the sesamoid surface. The most consistent elements of the arterial supply were proximal vessels supplying the axial and dorsal abaxial sides of the bone. In addition, palmar and distal sources often made contributions to the blood supply. Various minor or occasional sources were noted. This study demonstrates that the palmar metacarpal sesamoid bones of the dog have an abundant but highly variable vascular supply.The blood supply of the canine palmar metacarpal sesamoid bones was examined, using several methods, in order to evaluate the possible involvement of vascular compromise in sesamoid disease. It was found that the sesamoid bones have an abundant blood supply which is presumably resistant to disruption.

Innervation of endoneurial microvessels in human sural nerve

1992 ◽  
Vol 50 (1) ◽  
pp. 920-921
Author(s):  
John L. Beggs ◽  
Peter C. Johnson ◽  
Astrid G. Olafsen ◽  
C. Jane Watkins
Keyword(s):  
Blood Flow ◽  
Blood Vessels ◽  
Blood Supply ◽  
Peripheral Nerves ◽  
Sural Nerve ◽  
Nerve Fibers ◽  
Arterial Supply ◽  
Autonomic Nerve ◽  
Vasa Nervorum ◽  
Endoneurial Blood Flow

The blood supply (vasa nervorum) to peripheral nerves is composed of an interconnected dual circulation. The endoneurium of nerve fascicles is maintained by the intrinsic circulation which is composed of microvessels primarily of capillary caliber. Transperineurial arterioles link the intrinsic circulation with the extrinsic arterial supply located in the epineurium. Blood flow in the vasa nervorum is neurogenically influenced (1,2). Although a recent hypothesis proposes that endoneurial blood flow is controlled by the action of autonomic nerve fibers associated with epineurial arterioles (2), our recent studies (3) show that in addition to epineurial arterioles other segments of the vasa nervorum are also innervated. In this study, we examine blood vessels of the endoneurium for possible innervation.

scholarly journals Vascular Supply of the Human Spiral Ganglion: Novel Three-Dimensional Analysis Using Synchrotron Phase-Contrast Imaging and Histology

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Xueshuang Mei ◽  
Rudolf Glueckert ◽  
Annelies Schrott-Fischer ◽  
Hao Li ◽  
Hanif M. Ladak ◽  
...  
Keyword(s):  
Blood Supply ◽  
Phase Contrast ◽  
Spiral Ganglion ◽  
Three Dimensional ◽  
Vascular Anatomy ◽  
Helical Structure ◽  
Vascular Supply ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Temporal Bones

AbstractHuman spiral ganglion (HSG) cell bodies located in the bony cochlea depend on a rich vascular supply to maintain excitability. These neurons are targeted by cochlear implantation (CI) to treat deafness, and their viability is critical to ensure successful clinical outcomes. The blood supply of the HSG is difficult to study due to its helical structure and encasement in hard bone. The objective of this study was to present the first three-dimensional (3D) reconstruction and analysis of the HSG blood supply using synchrotron radiation phase-contrast imaging (SR-PCI) in combination with histological analyses of archival human cochlear sections. Twenty-six human temporal bones underwent SR-PCI. Data were processed using volume-rendering software, and a representative three-dimensional (3D) model was created to allow visualization of the vascular anatomy. Histologic analysis was used to verify the segmentations. Results revealed that the HSG is supplied by radial vascular twigs which are separate from the rest of the inner ear and encased in bone. Unlike with most organs, the arteries and veins in the human cochlea do not follow the same conduits. There is a dual venous outflow and a modiolar arterial supply. This organization may explain why the HSG may endure even in cases of advanced cochlear pathology.

Posterior Petrosal Transotic Approach for Cerebellopontine Angle Hemangioblastoma: Technical Case Report

2019 ◽  
Vol 17 (6) ◽  
pp. E269-E273
Author(s):  
Michael A Mooney ◽  
Claudio Cavallo ◽  
Evgenii Belykh ◽  
Sirin Gandhi ◽  
Justin Mascitelli ◽  
...  
Keyword(s):  
Blood Supply ◽  
Cerebellopontine Angle ◽  
Radiation Treatment ◽  
Vascular Supply ◽  
Vascular Tumors ◽  
Subtotal Resection ◽  
Anterior Inferior Cerebellar Artery ◽  
Adjuvant Radiation ◽  
Arterial Blood ◽  
Transotic Approach

Abstract BACKGROUND AND IMPORTANCE Although posterior petrosal approaches are utilized less frequently in many practices today, they continue to provide distinct surgical advantages in carefully selected cases. Here, we report a case of a recurrent cerebellopontine angle (CPA) hemangioblastoma that had failed a prior, more conservative, surgical approach. We provide cadaveric dissections of variations of posterior petrosal approaches to illustrate the advantages of the selected approach. CLINICAL PRESENTATION A 70-yr-old female presented with a growing left CPA hemangioblastoma. The lesion had undergone a prior subtotal resection from a retrosigmoid approach and subsequent adjuvant radiation treatment. The patient had worsening left facial strength, progressive balance difficulty, and absent left auditory function. Preoperative angiogram demonstrated arterial blood supply from the left anterior inferior cerebellar artery (AICA) that was deemed unsafe for embolization due to significant arteriovenous shunting. A posterior petrosal transotic approach was performed in order to optimize the working angle to the anterior brainstem and afford the ability to occlude the vascular supply from AICA prior to surgical resection of the lesion. CONCLUSION The posterior petrosal transotic approach offers an improved surgical working angle to the anterior brainstem compared to the translabyrinthine approach. This advantage can be particularly important with vascular tumors that receive blood supply anteriorly, as in this case from AICA, and can improve the safety of the resection.

Facial Palsy Following Embolization of a Juvenile Nasopharyngeal Angiofibroma

2018 ◽  
Vol 127 (5) ◽  
pp. 344-348 ◽  
Author(s):  
Kareem O. Tawfik ◽  
Jeffrey J. Harmon ◽  
Zoe Walters ◽  
Ravi Samy ◽  
Alessandro de Alarcon ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Facial Nerve ◽  
Blood Supply ◽  
Facial Palsy ◽  
Vascular Supply ◽  
Juvenile Nasopharyngeal Angiofibroma ◽  
External Carotid ◽  
Preoperative Embolization ◽  
Potential Complication ◽  
Nasopharyngeal Angiofibroma

Objectives: To describe a case of the rare complication of facial palsy following preoperative embolization of a juvenile nasopharyngeal angiofibroma (JNA). To illustrate the vascular supply to the facial nerve and as a result, highlight the etiology of the facial nerve palsy. Methods: The angiography and magnetic resonance (MR) imaging of a case of facial palsy following preoperative embolization of a JNA is reviewed. Results: A 13-year-old male developed left-sided facial palsy following preoperative embolization of a left-sided JNA. Evaluation of MR imaging studies and retrospective review of the angiographic data suggested errant embolization of particles into the petrosquamosal branch of the middle meningeal artery (MMA), a branch of the internal maxillary artery (IMA), through collateral vasculature. The petrosquamosal branch of the MMA is the predominant blood supply to the facial nerve in the facial canal. The facial palsy resolved since complete infarction of the nerve was likely prevented by collateral blood supply from the stylomastoid artery. Conclusions: Facial palsy is a potential complication of embolization of the IMA, a branch of the external carotid artery (ECA). This is secondary to ischemia of the facial nerve due to embolization of its vascular supply. Clinicians should be aware of this potential complication and counsel patients accordingly prior to embolization for JNA.

scholarly journals The Innervation and Vascular Supply of the Antrum

1934 ◽  
Vol 27 (6) ◽  
pp. 745-751 ◽  
Author(s):  
Cecil Strong
Keyword(s):  
Carotid Artery ◽  
Prussian Blue ◽  
Blood Supply ◽  
Vascular Supply ◽  
External Carotid Artery ◽  
External Carotid ◽  
Antral Mucosa ◽  
Thermal Tests ◽  
Made In

An attempt has been made to obtain information about the condition of the pulp of teeth, immediately below the bony incision, made in the lateral antral wall in radical antrotomy, and to investigate the conditions obtaining in the vascular supply of that neighbourhood. The investigation has two parts: (1) Experimental; (2) Clinical. Experimental.—( a) Injections of specimens of the superior maxillæ were made with lipiodol, then X-rayed. These showed vascular anastomoses along the antral floor. ( b) Sections of the lateral antral wall and floor were cut and stained to show nerves and blood spaces. ( c) The external carotid artery was injected with Prussian Blue and the maxilla then removed. ( d) Transverse sections of the teeth denervated were cut and their pulps examined. Clinical.—The patients who had been submitted to operation were taken, and their teeth examined by:— ( a) Transillumination. ( b) Percussion. ( c) Thermal tests. ( d) Faradic currents. ( e) Radiography. From these investigations it appears that the teeth are denervated but not devitalized by the trauma to the lateral antral wall above their apices. Their blood-supply is still present, and probably comes through a collateral anastomosis, along the antral floor and partly through the antral mucosa.

scholarly journals Vascular Supply to the Liver: A Report of a Rare Arterial Variant

2013 ◽  
Vol 2013 ◽  
pp. 1-3 ◽  
Author(s):  
Peter B. Johnson ◽  
Shamir O. Cawich ◽  
Sundeep Shah ◽  
Michael T. Gardner ◽  
Patrick Roberts ◽  
...  
Keyword(s):  
Hepatic Artery ◽  
Clinical Significance ◽  
Rare Variant ◽  
Vascular Supply ◽  
Common Hepatic Artery ◽  
Arterial Supply ◽  
Variant Pattern ◽  
Classic Pattern ◽  
Coeliac Trunk ◽  
The Common

In the classic description of hepatic arterial supply, the common hepatic artery originates from the coeliac trunk. However, there are numerous variations to this classic pattern. We report a rare variant pattern of hepatic arterial supply and discuss the clinical significance of this variation.

scholarly journals Variations in Blood Supply from Proximal to Distal in the Ulnar Collateral Ligament of the Elbow: A Qualitative Descriptive Cadaveric Study

2019 ◽  
Vol 7 (7_suppl5) ◽  
pp. 2325967119S0036
Author(s):  
Patrick S. Buckley ◽  
Elizabeth R. Morris ◽  
Colin Robbins ◽  
Bryson Kemler ◽  
Salvatore Joseph Frangiamore ◽  
...  
Keyword(s):  
Blood Supply ◽  
Average Length ◽  
Vascular Anatomy ◽  
Ulnar Collateral Ligament ◽  
Vascular Supply ◽  
Medial Epicondyle ◽  
Qualitative Description ◽  
Return To Play ◽  
Collateral Ligament ◽  
India Ink

Objectives: The vascular supply of the ulnar collateral ligament (UCL) is unknown. Previous studies have reported varying success in return to play rates after non-operative management of partial UCL tears and suggest a varying healing capacity as possibly related to UCL injury location. The purpose of this study was to analyze the macroscopic vascular anatomy of the ulnar collateral ligament of the elbow. Methods: Eighteen, fresh-frozen, male cadaveric elbows from nine donors were sharply dissected 15 cm proximal to the medial epicondyle. Sixty mL of India Ink was injected through the brachial artery of each elbow. Arms were then frozen at -10°C, radial side down in 15-20° of elbow flexion. A bandsaw was used to section the frozen elbows into 5 mm coronal or sagittal sections. Sections were cleared for visualization using the modified Spalteholz technique. Images of specimens were taken and the qualitative description of the UCL vascularity was undertaken. Results: We consistently found a dense blood supply to the proximal UCL, while the distal UCL was hypovascular. We observed a possible osseous contribution to the proximal UCL from the medial epicondyle in addition to an artery from the flexor/pronator musculature that consistently appeared to provide vascularity to the proximal UCL. The degree of vascular penetration moving from proximal to distal in the UCL ranged from 39-68% of the overall UCL length, with a 49% average length of vascular penetration of the UCL. Conclusion: Our study found a difference in the vascular supply of the ulnar collateral ligament. The proximal UCL was well vascularized, while the distal UCL was hypovascular. This difference in vascular supply may be a factor in the differential healing capacities of the UCL based on the location of injury. An improved understanding of the macroscopic vascular supply of the UCL may aid in the clinical management of partial UCL tears and suggest an indication for treatments with respect to location of UCL injuries.

scholarly journals Microvascular Architecture of Hepatic Metastases in a Mouse Model

HPB Surgery ◽  
1997 ◽  
Vol 10 (3) ◽  
pp. 149-158 ◽  
Author(s):  
Darshini Kuruppu ◽  
Chris Christophi ◽  
Paul E. O'Brien
Keyword(s):  
Blood Supply ◽  
Hepatic Metastases ◽  
Vascular Supply ◽  
Carcinoma Cells ◽  
Capillary Networks ◽  
Colon Carcinoma Cells ◽  
Tumour Vasculature ◽  
Microvascular Architecture ◽  
Tumour Periphery ◽  
Vascular Branching

Development of effective treatment for hepatic metastases can be initiated by a better understanding of tumour vasculature and blood supply. This study was designed to characterise the microvascular architecture of hepatic metastases and observe the source of contributory blood supply from the host. Metastases were induced in mice by an intrasplenic injection of colon carcinoma cells (106 cells/ml.) Vascularization of tumours was studied over a three week period by scanning electron microscopy of microvascular corrosion casts. Metastatic liver involvement was observed initially within a week post induction, as areas approximately 100 μm in diameter not perfused by the casting resin. On histology these spaces corresponded to tumour cell aggregates. The following weeks highlighted the angiogenesis phase of these tumours as they received a vascular supply from adjacent hepatic sinusoids. Direct sinusoidal supply of metastases was maintained throughout tumour growth. At the tumour periphery most sinusoids were compressed to form a sheath demarcating the tumour from the hepatic vasculature. No direct supply from the hepatic artery or the portal vein was observed. Dilated vessels termed vascular lakes dominated the complex microvascular architecture of the tumours, most tapering as they traversed towards the periphery. Four vascular branching patterns could be identified as true loops, bifurcations and trifurcations, spirals and capillary networks. The most significant observation in this study was the direct sinusoidal supply of metastases, together with the vascular lakes and the peripheral sinusoidal sheaths of the tumour microculature.

Vascular Supply of Nerves in the Tarsal Tunnel

1997 ◽  
Vol 18 (5) ◽  
pp. 288-292 ◽  
Author(s):  
David C. Flanigan ◽  
Martin Cassell ◽  
Charles L. Saltzman
Keyword(s):  
Tibial Nerve ◽  
Posterior Tibial Artery ◽  
Vascular Supply ◽  
Tarsal Tunnel ◽  
Lateral Plantar Nerve ◽  
Nutrient Artery ◽  
Vascular Compromise ◽  
Tunnel Syndrome ◽  
Nutrient Vessel ◽  
Branching Point

The normal vascular supply of nerves in the tarsal tunnel was studied by intra-arterial injection of latex. In general, the blood supply to the tibial nerve and its branches came directly from corresponding arteries. Each nutrient artery to the tibial nerve bifurcated on the surface of the lateral plantar nerve fasciculus to create longitudinal vessels that made anastomoses with bifurcating nutrient vessels proximally and distally. This primary longitudinal system supplied intersubfascicular vessels to the medial plantar fasciculus. The last nutrient artery from the posterior tibial artery usually supplied the terminal branching point of the tibial nerve midway through the tarsal tunnel. The lateral and medial plantar nerves received most of the nutrient vessels from their corresponding arteries in shorter intervals. In 65% of cases, the lateral plantar nerve received a nutrient vessel from the medial plantar artery. Potential anatomical areas of vascular compromise in the etiology or surgical release of tarsal tunnel syndrome are discussed.

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