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Saphenous nerve

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https://www.readbyqxmd.com/read/28092318/opening-injection-pressure-is-higher-in-intraneural-compared-with-perineural-injections-during-simulated-nerve-blocks-of-the-lower-limb-in-fresh-human-cadavers
#1
Kris Vermeylen, Marlies Hermans, Filiep Soetens, Evie Vereecke, Thorsten Steinfeldt, Gerbrand Groen, Admir Hadzic, Marc Van de Velde
BACKGROUND AND OBJECTIVES: Needle-induced nerve trauma and intraneural injection can lead to neurologic injury during peripheral nerve blocks. In this study, we assessed the utility of opening injection pressure (OIP), time to OIP, and rate of rise to OIP in detecting needle-nerve contact and intraneural injection. METHODS: Five common ultrasound-guided blocks of the femoral, saphenous, subgluteal sciatic, tibial, and common peroneal nerves were simulated in 10 fresh cadavers...
January 13, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28050474/technique-efficiency-and-safety-of-different-nerve-blocks-for-analgesia-in-laser-ablation-and-sclerotherapy-for-lower-limb-superficial-venous-insufficiency-a-multicentre-experience
#2
Krishna Prasad Premnath Bellam, Binu Joy, Abhilash Sandhyala, Kiran Naiknaware, Brijesh Ray, Vijayakumar
INTRODUCTION: Laser ablation and sclerotherapy, as minimally invasive alternatives to surgery for varicose veins, have good efficacy, safety and cosmetic result. Some form of anaesthesia is generally used for pain control. AIM: To describe the technique and evaluate the efficacy and safety of femoral, saphenous and sciatic nerve blocks in isolation or in combination for analgesia during laser ablation and sclerotherapy for lower limb varicose veins. MATERIALS AND METHODS: In this prospective observational study, over a period of 33 months, in 856 limbs of 681 patients with varicose veins, ultrasound guided femoral, saphenous and sciatic nerve blocks for analgesia were performed in 769, 808 and 52 instances respectively; following which, endovenous laser ablation, sclerotherapy or combination of both were carried out using standard practice...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28033159/effect-of-perineural-dexamethasone-on-the-duration-of-single-injection-saphenous-nerve-block-for-analgesia-after-major-ankle-surgery-a-randomized-controlled-study
#3
Siska Bjørn, Frank Linde, Kristian K Nielsen, Jens Børglum, Rasmus Wulff Hauritz, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: Patients undergoing major elective ankle surgery often experience pain from the saphenous nerve territory persisting beyond the duration of a single-injection saphenous nerve block. We hypothesized that perineural dexamethasone as an adjuvant for the saphenous nerve block prolongs the duration of analgesia and postpones as well as reduces opioid-requiring pain. METHODS: Forty patients were included in this prospective, randomized, controlled study...
December 29, 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28028970/diagnostic-and-therapeutic-difficulties-in-carotid-body-paragangliomas-based-on-clinical-experience-and-a-review-of-the-literature
#4
Karolina Dorobisz, Tadeusz Dorobisz, Hanna Temporale, Tomasz Zatoński, Marzena Kubacka, Mariusz Chabowski, Andrzej Dorobisz, Tomasz Kręcicki, Dariusz Janczak
BACKGROUND: Paragangliomas are rare neuroendocrine tumors, representing 0.03% of all tumors. Half of them develop in the head and neck, and among these 50% are sporadic cervical tumors. OBJECTIVES: The aim of the study was to carry out an epidemiological and clinical analysis of paraganglioma patients diagnosed and treated at the authors' clinics between 1985 and 2014. MATERIAL AND METHODS: The medical data of 47 patients were analyzed. All the patients were qualified for surgery...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28017161/ultrasound-guided-peripheral-nerve-blocks-in-anticoagulated-patients-case-series
#5
Luis Eduardo Silveira Martins, Leonardo Henrique Cunha Ferraro, Alexandre Takeda, Masashi Munechika, Maria Angela Tardelli
BACKGROUND AND OBJECTIVES: The advent of ultrasound has brought many benefits to peripheral nerve blocks. It includes both safety and effectiveness, given the possibility of visualizing the neurovascular structures and the needle during the procedure. Despite these benefits, there is no consensus in the literature on the use of this technique in anticoagulated patients or with other coagulation disorders. Moreover, peripheral blocks vary in depth, spreadability, and possibility of local compression...
January 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/27982166/randomized-trial-of-radiofrequency-ablation-versus-conventional-surgery-for-superficial-venous-insufficiency-if-you-don-t-tell-they-won-t-know
#6
Cynthia de Almeida Mendes, Alexandre de Arruda Martins, Juliana Maria Fukuda, José Ben-Hur Ferraz Parente, Marco Antonio Soares Munia, Alexandre Fioranelli, Marcelo Passos Teivelis, Andrea Yasbek Monteiro Varella, Roberto Augusto Caffaro, Sergio Kuzniec, Nelson Wolosker
OBJECTIVES: This study compared radiofrequency ablation versus conventional surgery in patients who had not undergone previous treatment for bilateral great saphenous vein insufficiency, with each patient serving as his own control. METHOD: This was a randomized controlled trial that included 18 patients and was carried out between November 2013 and May 2015. Each of the lower limbs of each patient was randomly assigned to undergo either radiofrequency ablation or conventional surgery...
November 1, 2016: Clinics
https://www.readbyqxmd.com/read/27981883/varicose-vein-therapy-and-nerve-lesions
#7
Tobias Hirsch
Treating varicose veins using endovenous thermal techniques - especially laser and radio frequency ablation - has emerged as an effective alternative to open surgery with stripping and high ligation. Even though these methods are very gentle and patient-friendly, they are nevertheless accompanied by risks and side effects. Compared to open surgical therapy, the risk of damage to peripheral and motor nerves is reduced; however, it still exists as a result of heat exposure and tumescent anaesthesia. Non-thermal methods that can be applied without tumescent anaesthesia have been introduced to the market...
December 16, 2016: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/27955918/dexmedetomidine-added-to-local-anesthetic-mixture-of-lidocaine-and-ropivacaine-enhances-onset-and-prolongs-duration-of-a-popliteal-approach-to-sciatic-nerve-blockade
#8
Xiawei Hu, Jinlei Li, Riyong Zhou, Quanguang Wang, Fangfang Xia, Thomas Halaszynski, Xuzhong Xu
PURPOSE: A literature review of multiple clinical studies on mixing additives to improve pharmacologic limitation of local anesthetics during peripheral nerve blockade revealed inconsistency in success rates and various adverse effects. Animal research on dexmedetomidine as an adjuvant on the other hand has promising results, with evidence of minimum unwanted results. This randomized, double-blinded, contrastable observational study examined the efficacy of adding dexmedetomidine to a mixture of lidocaine plus ropivacaine during popliteal sciatic nerve blockade (PSNB)...
December 9, 2016: Clinical Therapeutics
https://www.readbyqxmd.com/read/27922951/anatomic-and-ultrasonographic-evaluation-of-the-knee-sensory-innervation-a-cadaveric-study-to-determine-anatomic-targets-in-the-treatment-of-chronic-knee-pain
#9
Jorge M Orduña Valls, Ricardo Vallejo, Pablo López Pais, Eliezer Soto, Daniel Torres Rodríguez, David L Cedeño, Carlos Tornero Tornero, Maximino Quintáns Rodríguez, Aurora Baluja González, Julián Álvarez Escudero
BACKGROUND AND OBJECTIVES: Osteoarthrosis is a main cause of knee pain in the elderly. Pain associated with this condition is often refractory to conservative treatment. Total knee replacement may be the best option for severe pathologies; however, the occurrence of a chronic pain state after knee replacement has been well documented in the literature. The previous descriptions of the genicular nerves have been considered somewhat inaccurate. This innervation is complex and exhibits significant interindividual variability...
January 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27902645/effect-of-nerve-stimulation-use-on-the-success-rate-of-ultrasound-guided-subsartorial-saphenous-nerve-block-a-randomized-controlled-trial
#10
Shaylyn H Montgomery, Colleen M Shamji, Grace S Yi, Cynthia H Yarnold, Stephen J Head, Scott C Bell, Stephan K W Schwarz
BACKGROUND AND OBJECTIVES: Ultrasound-guided subsartorial saphenous nerve block is commonly used to provide complete surgical anesthesia of the foot and ankle in combination with a popliteal sciatic nerve block. However, in part owing to its small caliber and absence of a prominent vascular landmark in the subsartorial plane distal to the adductor canal, the saphenous nerve is more difficult to reliably block than the sciatic nerve in the popliteal fossa. Although the saphenous nerve is a sensory nerve only, neurostimulation can be used to elicit a "tapping" sensation on the anteromedial aspect of the lower leg extending toward the medial malleolus...
January 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27900340/retropatellar-accessory-portals-for-improved-access-to-the-patella-anatomic-description-and-evaluation-of-safety
#11
Jason L Koh, Anthony L Logli
BACKGROUND: Standard knee arthroscopy portals are frequently used to address retropatellar chondral pathology. Alternative portals may offer a safe and simple substitute, particularly when reaching the base of deep lesions is required. PURPOSE: To describe and assess the safety of accessory retropatellar portals. STUDY DESIGN: Descriptive laboratory study. METHODS: An anatomic study was performed on 10 fresh-frozen cadaveric knees...
November 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27898492/growth-hormone-regulates-the-sensitization-of-developing-peripheral-nociceptors-during-cutaneous-inflammation
#12
Xiaohua Liu, Kathryn J Green, Zachary K Ford, Luis F Queme, Peilin Lu, Jessica L Ross, Frank B Lee, Aaron T Shank, Renita C Hudgins, Michael P Jankowski
Cutaneous inflammation alters the function of primary afferents and gene expression in the affected dorsal root ganglia (DRG). However, specific mechanisms of injury-induced peripheral afferent sensitization and behavioral hypersensitivity during development are not fully understood. Recent studies in children suggest a potential role for growth hormone (GH) in pain modulation. Growth hormone modulates homeostasis and tissue repair after injury, but how GH affects nociception in neonates is not known. To determine whether GH played a role in modulating sensory neuron function and hyperresponsiveness during skin inflammation in young mice, we examined behavioral hypersensitivity and the response properties of cutaneous afferents using an ex vivo hairy skin-saphenous nerve-DRG-spinal cord preparation...
February 2017: Pain
https://www.readbyqxmd.com/read/27898181/endovenous-ablation-therapy-laser-or-radiofrequency-or-foam-sclerotherapy-versus-conventional-surgical-repair-for-short-saphenous-varicose-veins
#13
REVIEW
Sharath Chandra Vikram Paravastu, Margaret Horne, P Dominic F Dodd
BACKGROUND: Short (or small) saphenous vein (SSV) varices occur as a result of an incompetent sapheno-popliteal junction, where the SSV joins the popliteal vein, resulting in reflux in the SSV; they account for about 15% of varicose veins. Untreated varicose veins may sometimes lead to ulceration of the leg, which is difficult to manage. Traditionally, treatment was restricted to surgery or conservative management. Since the 1990s, however, a number of minimally invasive techniques have been developed; these do not normally require a general anaesthetic, are day-case procedures with a quicker return to normal activities and avoid the risk of wound infection which may occur following surgery...
29, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27878340/anatomical-risk-evaluation-of-iatrogenic-injury-to-the-infrapatellar-branch-of-the-saphenous-nerve-during-medial-meniscus-arthroscopic-surgery
#14
Guillaume Koch, Agathe Kling, Nitin Ramamurthy, Faramarz Edalat, Roberto Luigi Cazzato, Jean-Luc Kahn, Julien Garnon, Philippe Clavert
PURPOSE: To determine the relationship of the medial meniscus with the infrapatellar branches of the saphenous nerve, the primary goal is to define and characterize different risk areas for these nerves during medial meniscus surgery. METHODS: After dissecting 20 embalmed cadaver knees, we defined 7 readily identifiable anatomical landmarks. For each knee, we recorded 2 morphological criteria and 16 measurements. RESULTS: The most common anatomical course is a main trunk that is 8 mm anterior to the tuberculum adductorium and 60 mm posterior to the midpoint of the medial patellar margin...
November 22, 2016: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27870646/ultrasound-guided-electrodes-for-conduction-studies-of-the-saphenous-nerve
#15
M E Evangelopoulos, S Humpert, K M Rösler
INTRODUCTION: Saphenous nerve conduction studies are difficult, since the nerve is hard to localize and evoked responses are small. Ultrasound imaging may assist in the accurate localization and optimal positioning of surface (SE) and needle electrodes (NE). METHODS: The study population included 39 subjects and was divided into 2 groups. Group A consisted of 20 healthy subjects, while group B of 19 patients with polyneuropathies. Orthodromic conduction was measured by distal supramaximal nerve stimulation...
November 16, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/27846646/the-variable-emergence-of-the-infrapatellar-branch-of-the-saphenous-nerve
#16
Brandon Michael Henry, Krzysztof A Tomaszewski, Przemysław A Pękala, Piravin Kumar Ramakrishnan, Dominik Taterra, Karolina Saganiak, Ewa Mizia, Jerzy A Walocha
The infrapatellar branch of the saphenous nerve (IPBSN) is a cutaneous nerve of the lower limb, which arises distal to the adductor canal. High variability in the emergence, course, branching, termination, and morphometrics of the IPBSN poses an increased risk of injury to the nerve during surgical interventions on the anteromedial aspect of the knee. The aim of this study was to describe the anatomical characteristics of the IPBSN. This study utilized cadaveric (n = 100) and ultrasonography (n = 30) assessments, and meta-analysis...
November 15, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27834474/minimum-local-anaesthetic-volumes-for-a-selective-saphenous-nerve-block-a-dose-finding-study
#17
Werner Ten Hoope, Markus W Hollmann, Arthur Atchabahian, Marcel Rigaud, Gino M Kerkhoffs, Philipp Lirk, Holger M Baumann
BACKGROUND: Saphenous nerve block contributes to analgesia after knee and lower leg surgery. However, literature reports a wide range of volumes of local anaesthetic being used for this block. METHODS: A non-randomized controlled trial in a single university hospital in March 2015. Eighteen healthy volunteers (ASA 1 status, aged 27-43 years; male/female ratio 11 vs. 7) were needed to determine the minimum local anaesthetic volume (MLAV) of mepivacaine 2% using the Dixon up-and-down method to achieve a selective ultrasound-guided saphenous nerve block...
November 11, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27833497/peroneal-nerve-palsy-after-compression-stockings-application
#18
Jun Hyun Kim, Won Il Kim, Ji Yeon Kim, Won Joo Choe
Peroneal nerve palsy can be caused by various etiology. We report unilateral peroneal nerve palsy after compression stockings application. A 64-year-old man underwent off-pump coronary bypass graft. Surgeon did not use saphenous vein for the bypass graft. Sedation was stopped after 3 h postoperative. After 16 h, for prophylaxis of deep vein thrombosis, knee-high elastic stocking was applied. After 1 h, he took off right stocking because of numbness but left stocking was kept. After 24 h postoperative, (8 h after stocking application) patient complained suddenly left foot drop...
October 2016: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/27830881/transtendinous-course-of-the-infrapatellar-branch-of-saphenous-nerve-a-contribution-to-the-aetiology-of-entrapment-neuropathy-and-modification-of-the-existing-classification
#19
K Natsis, G Konstantinidis, G Geropoulos, T Totlis, N Lazaridis, T Tegos
BACKGROUND: The course of the infrapatellar branch of saphenous nerve (IPBSN) in relation to the Sartorius muscle has been classified into presartorial, transsartorial and retrosartorial types. Mechanical compression of the IPBSN within the Sartorius tendon has been surgically recognised as a cause of entrapment neuropathy. Purpose of the present study was to differentiate the IPBSNs penetrating the Sartorius tendon from those penetrating the Sartorius muscle, from an anatomical and clinical point of views and thus modifying the existing classification...
2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27799178/does-dexamethasone-have-a-perineural-mechanism-of-action-a-paired-blinded-randomized-controlled-study-in-healthy-volunteers
#20
P Jæger, U Grevstad, Z J Koscielniak-Nielsen, A R Sauter, J K Sørensen, J B Dahl
BACKGROUND: Dexamethasone prolongs block duration. Whether this is achieved via a peripheral or a central mechanism of action is unknown. We hypothesized that perineural dexamethasone added as an adjuvant to ropivacaine prolongs block duration compared with ropivacaine alone, by a locally mediated effect when controlled for a systemic action. METHODS: We performed a paired, blinded, randomized trial, including healthy men. All subjects received bilateral blocks of the saphenous nerve with ropivacaine 0...
November 2016: British Journal of Anaesthesia
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