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https://www.readbyqxmd.com/read/28227502/posterior-tibial-nerve-stimulation-using-a-wirelessly-powered-system-in-anesthetized-cats
#1
Zainab Moazzam, Austin R Duke, Paul B Yoo, Zainab Moazzam, Austin R Duke, Paul B Yoo, Paul B Yoo, Zainab Moazzam, Austin R Duke
Posterior Tibial Nerve Stimulation (PTNS) is an effective overactive bladder (OAB) therapy where electrical pulses are typically delivered once per week in a 12-week stimulation regime. While the mechanism of action remains unknown, effective long-term delivery of PTNS has recently become a subject of concern. To this end, a multi-contact electrode was surgically placed in the hind limb region of anesthetized cats to (1) investigate the feasibility of using a wirelessly powered system to stimulate PTN afferents and (2) characterize implant-driven effects of stimulation frequency on modulating bladder activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227180/electrical-stimulation-of-the-saphenous-nerve-in-anesthetized-rats-a-novel-therapeutic-approach-to-treating-overactive-bladder
#2
Zainab Moazzam, Paul B Yoo, Zainab Moazzam, Paul B Yoo, Paul B Yoo, Zainab Moazzam
Posterior Tibial Nerve Stimulation (PTNS) is a minimally invasive yet effective therapy for treating overactive bladder (OAB) symptoms with electrical stimulations applied at 20 Hz coupled with amplitudes approximating the foot-twitch threshold (T). However, pre-clinical studies indicate that PTNS-evoked bladder reflexes require stimulation amplitudes exceeding 2T. The objective of this work was to evaluate the presence of secondary low-threshold sensory pathways in the hind-limb region that can be a potential target of activation during clinical PTNS set-up...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226762/the-use-of-a-thermal-camera-and-eulerian-enhancement-in-the-examination-of-pedal-pulse-and-microvascular-health
#3
Stephanie L Bennett, Rafik A Goubran, Brendan Bennett, Rebecca A Bennett, Frank Knoefel, Stephanie L Bennett, Rafik A Goubran, Brendan Bennett, Rebecca A Bennett, Frank Knoefel, Stephanie L Bennett, Rafik A Goubran, Brendan Bennett, Rebecca A Bennett, Frank Knoefel
Early detection of impaired blood flow and microvascular functioning is important to prevent ulceration in diabetic patients. This paper aims to first determine if thermal video in conjunction with Eulerian Video Magnification (EVM) can be used to find the pedal pulse rate, and reveal patterns indicative of the foot's microvascular health. Thermal video was captured of a healthy adult's foot while a Doppler ultrasound captured pedal pulse. Another thermal video was captured of a patient's heels. These videos were subjected to EVM, areas of interest were defined and the mean intensity signal was calculated temporally, within each defined area...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224073/endoscopic-resection-of-the-tarsal-tunnel-ganglion
#4
Tun Hing Lui
The tarsal tunnel ganglion is a cause of posterior tarsal tunnel syndrome. Open resection of the ganglion calls for release of the flexor retinaculum and dissection around the tibial neurovascular bundle. This can induce fibrosis around the tibial nerve. We report the technique of endoscopic resection of the tarsal tunnel ganglion. It is indicated for tarsal tunnel ganglia arising from the adjacent joints or tendon sheaths and compressing the tibial nerve from its deep side. It is contraindicated if there is other pathology of the tarsal tunnel that demands open surgery; if the ganglion compresses the tibial nerve from its superficial side, which calls for a different endoscopic approach using the ganglion portal; or if an intraneural ganglion of the tibial nerve is present...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28220819/the-cutoff-value-of-ossification-of-posterior-longitudinal-ligament-opll-for-early-diagnosis-of-myelopathy-using-somatosensory-evoked-potential-in-cervical-opll-patients
#5
S Y Yoon, T H Park, N L Eun, Y G Park
STUDY DESIGN: Retrospective study. OBJECTIVES: The objective of this study was to find out whether ossification of posterior longitudinal ligament (OPLL) characteristics, including size, shape and subtype, can be used to diagnose myelopathy using somatosensory evoked potential (SEP) in cervical OPLL patients. SETTING: Yonsei University College of Medicine, Seoul, Korea. METHODS: We retrospectively reviewed the medical records of 153 cervical OPLL patients who underwent SEP study...
February 21, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28220268/anterolateral-ligament-expert-group-consensus-paper-on-the-management-of-internal-rotation-and-instability-of-the-anterior-cruciate-ligament-deficient-knee
#6
REVIEW
Bertrand Sonnery-Cottet, Matthew Daggett, Jean-Marie Fayard, Andrea Ferretti, Camilo Partezani Helito, Martin Lind, Edoardo Monaco, Vitor Barion Castro de Pádua, Mathieu Thaunat, Adrian Wilson, Stefano Zaffagnini, Jacco Zijl, Steven Claes
Purpose of this paper is to provide an overview of the latest research on the anterolateral ligament (ALL) and present the consensus of the ALL Expert Group on the anatomy, radiographic landmarks, biomechanics, clinical and radiographic diagnosis, lesion classification, surgical technique and clinical outcomes. A consensus on controversial subjects surrounding the ALL and anterolateral knee instability has been established based on the opinion of experts, the latest publications on the subject and an exchange of experiences during the ALL Experts Meeting (November 2015, Lyon, France)...
February 20, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28220191/anatomical-variations-of-flexor-hallucis-longus-tendon-increase-safety-in-hindfoot-endoscopy
#7
Jordi Vega, David Redó, Gabriela Savín, Francesc Malagelada, Miki Dalmau-Pastor
PURPOSE: The flexor hallucis longus (FHL) tendon is the main anatomical landmark during hindfoot endoscopy, and anatomical variations related to the FHL can pose a risk to the tibial nerve and posterior tibial vessels during hindfoot endoscopy. The aim of this study was to determine the distance between the FHL tendon and the tibial neurovascular bundle in the posterior ankle joint when an anatomical variant of the FHL is present. The hypothesis was that the shortest distance between the tibial neurovascular bundle and the FHL tendon in the working area of the hindfoot endoscopy is increased when an anatomical variant of the FHL is present...
February 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28219307/comparative-evaluation-of-posterior-cruciate-ligament-in-total-knee-arthroplasty
#8
Yuan Ma, Wei-Jia Chen, Ryuji Nagamine
INTRODUCTION: It has been realized that for osteoarthritis (OA) knee with varus deformity, posterior cruciate ligament (PCL) release resulted in the increase of the flexion gap without significant effect on the extension gap. While the effect of release on gap angle is still obscure. On the other hand, gap distance and varus angle measured under different distraction forces suggest different patterns. OBJECTIVES: In the current study, mechanical gap balance in displacement and angular alternation of extension and flexion gaps will be evaluated, with PCL fully retained or resected under different distracting forces in varus knees...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28218393/the-relative-position-of-the-human-fibula-to-the-tibia-influences-cross-sectional-properties-of-the-tibia
#9
Benjamin M Auerbach, Alice F Gooding, Colin N Shaw, Adam D Sylvester
OBJECTIVES: The fibula transmits loads within the lower limb of hominids. The few studies of variation in the cross-sectional geometric (CSG) properties of the fibula have established differences in its rigidity among groups engaged in distinct habitual loading activities. This study adds to this research by considering the relationship between CSG properties and the anatomical position of the fibula relative to the tibia among groups with differences in documented activity patterns. MATERIAL AND METHODS: We used pQCT scans taken at 50% of the length of the lower leg in 83 healthy young adult collegiate-aged individuals divided into five activity groups: runners, swimmers, cricketers, field hockey players, and non-athletes...
February 20, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28216753/anatomical-variation-of-posterior-slope-of-tibial-plateau-in-adult-eastern-indian-population
#10
Shyamalendu Medda, Rajib Kundu, Sohini Sengupta, Ananda Kisor Pal
BACKGROUND: Upper surface of the proximal tibial end, tibial plateau, has a slope directed posteroinferiorly relative to the long axis of the middle of the shaft. It has important consideration in surgeries such as knee arthroplasty, high tibial osteotomy, and medical imaging of the knee joint. The aim of the present study was to estimate the tibial plateau angle (TPA) by plain radiograph in the adult Eastern Indian population as during literature review, we were unable to find any study, except one (without specific reference axis), on this variable among the Indian population...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28213703/proximal-tibial-bony-and-meniscal-slopes-are-higher-in-acl-injured-subjects-than-controls-a-comparative-mri-study
#11
Ashraf Elmansori, Timothy Lording, Raphaël Dumas, Khalifa Elmajri, Philippe Neyret, Sébastien Lustig
PURPOSE: Increased tibial slope is reported as a risk factor of non-contact anterior cruciate ligament (ACL) injury, but the effect of the soft tissues on slope remains unclear. The primary aims of this study were to compare the tibial bony and soft tissue slopes between patients with and without ACL injury, and to investigate the relationship between the meniscal slopes (MS) and the tibial bony slope. Our hypothesis was that the menisci would correct the inclination of the bony tibial slope towards the horizontal...
February 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28210787/articular-surface-mounted-navigated-total-knee-arthroplasty-improves-the-reliability-of-component-alignment
#12
N D Clement, D MacDonald, A G Burgess, C R Howie
PURPOSE: The primary aim was to compare the early knee-specific functional outcome after articular surface mounted (ASM) navigation with non-navigated TKA. The secondary aims were to compare general physical and mental health improvement, patient satisfaction, and reliability of component alignment in the sagittal and coronal planes between ASM navigated TKA with that of non-navigated TKA. METHODS: Prospective functional outcome and radiographic data were collect for 123 patients undergoing ASM navigation and 172 patients undergoing non-navigated TKA by a high volume single surgeon...
February 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28209507/ultrasound-guided-pulsed-radiofrequency-stimulation-of-posterior-tibial-nerve-a-potential-novel-intervention-for-recalcitrant-plantar-fasciitis
#13
Yung-Tsan Wu, Chih-Ya Chang, Yu-Ching Chou, Chun-Chang Yeh, Tsung-Ying Li, Heng-Yi Chu, Liang-Cheng Chen
OBJECTIVE: To evaluate the therapeutic benefit of ultrasound-guided pulsed radiofrequency (PRF) stimulation at the posterior tibial nerve (PTN) in patients with recalcitrant plantar fasciitis (PF). DESIGN: A prospective, randomized, double-blinded, placebo-controlled trial (12-week follow-up). SETTING: Outpatient of local medical center settings. PARTICIPANTS: Thirty-six patients with recalcitrant PF were randomized and 36 participants were included in the final data analysis...
February 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28207972/anatomical-study-of-the-inferior-patellar-pole-and-patellar-tendon
#14
M Edama, I Kageyama, M Nakamura, T Kikumoto, E Nakamura, W Ito, T Takabayashi, T Inai, H Onishi
In this study, detailed investigations of the shape of the inferior patellar pole, the site of the patellar tendon attachment, and the length and course of the patellar tendon were performed with the aim of examining the anatomical factors involved in the developmental mechanism of patellar tendinitis.  The investigation examined 100 legs from 50 cadavers. The inferior patellar pole was classified into three types: Pointed, Intermediate, and Blunt. The attachment of the patellar tendon to the inferior patellar pole was classified into two types: an anterior and a posterior...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28207961/muscle-stiffness-of-posterior-lower-leg-in-runners-with-a-history-of-medial-tibial-stress-syndrome
#15
Junya Saeki, Masatoshi Nakamura, Sayaka Nakao, Kosuke Fujita, Ko Yanase, Noriaki Ichihashi
Previous history of medial tibial stress syndrome (MTSS) is a risk factor for MTSS relapse, which suggests that there might be some physical factors that are related to MTSS development in runners with a history of MTSS. The relationship between MTSS and muscle stiffness can be assessed in a cross-sectional study that measures muscle stiffness in subjects with a history of MTSS, who do not have pain at the time of measurement, and in those without a history of MTSS. The purpose of this study was to compare the shear elastic modulus, which is an index of muscle stiffness, of all posterior lower leg muscles of subjects with a history of MTSS and those with no history and investigate which muscles could be related to MTSS...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28203587/why-do-authors-differ-with-regard-to-the-femoral-and-meniscal-anatomic-parameters-of-the-knee-anterolateral-ligament-dissection-by-layers-and-a-description-of-its-superficial-and-deep-layers
#16
Camilo Partezani Helito, Carlos do Amaral, Yuri da Cunha Nakamichi, Riccardo Gomes Gobbi, Marcelo Batista Bonadio, Renato José Mendonça Natalino, José Ricardo Pécora, Tulio Pereira Cardoso, Gilberto Luis Camanho, Marco Kawamura Demange
BACKGROUND: No consensus exists regarding the anatomic characteristics of the knee anterolateral ligament (ALL). A critical analysis of the dissections described in previous studies allows the division of the ALL into 2 groups with similar characteristics. The presence of considerable variability suggests that the authors may not be referring to the same structure. PURPOSE/HYPOTHESIS: To perform a lateral anatomic dissection, by layers, seeking to characterize the 2 variants described for the ALL on the same knee...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28203586/comparison-of-kinematics-and-tibiofemoral-contact-pressures-for-native-and-transplanted-lateral-menisci
#17
Patrick C McCulloch, Donald Dolce, Hugh L Jones, Andrea Gale, Michael G Hogen, Jason Alder, Jeremiah E Palmer, Philip C Noble
BACKGROUND: Lateral meniscus transplantation is a proven treatment option for the meniscus-deficient knee, yet little is known about meniscal kinematics, strain, and tibiofemoral contact pressure changes after transplantation or the effect of altered root position in lateral meniscus transplantation. PURPOSE: To compare the native lateral meniscal kinematics, strain, and tibiofemoral contact pressures to a best-case scenario meniscus transplant with perfectly matched size and position and to determine how sensitive these factors are to subtle changes in shape and position by using a nonanatomic meniscus transplant position...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28198793/proximity-and-risks-of-the-anterior-neurovascular-and-tendinous-anatomy-of-the-distal-leg-relative-to-anteriorly-applied-distal-locking-screws-for-tibia-nailing-a-plea-for-open-insertion
#18
Phillip M Mitchell, Cory A Collinge, Eric Barcak, Edward Perez, Kostas Triantafillou
PURPOSE: To determine the proximity and potential risks to distal leg anatomy from anterior to posteriorly (A-P) applied distal tibia locking screws for tibial nailing. DESIGN: Retrospective. SETTING: ACS level I trauma center. PATIENTS/PARTICIPANTS: Twenty consecutive adult patients undergoing computed tomograms with intravenous contrast (CTAs) on uninjured legs. MAIN OUTCOME MEASUREMENTS: Simulated 5 mm distal interlocking screws placed in the A-P axis of an ideally placed tibial nail at 10 mm increments from the tibial plafond (10 to 40mm) were studied in relation to the distal leg's anterior anatomy...
February 14, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28197696/large-meniscus-extrusion-ratio-is-a-poor-prognostic-factor-of-conservative-treatment-for-medial-meniscus-posterior-root-tear
#19
Yoon-Ho Kwak, Sahnghoon Lee, Myung Chul Lee, Hyuk-Soo Han
PURPOSE: The purpose of this study was to find a prognostic factor of medial meniscus posterior root tear (MMPRT) for surgical decision making. METHODS: Eighty-eight patients who were diagnosed as acute or subacute MMPRT without severe degeneration of the meniscus were treated conservatively for 3 months. Fifty-seven patients with MMPRT showed good response to conservative treatment (group 1), while the remaining 31 patients who failed to conservative treatment (group 2) received arthroscopic meniscus repair...
February 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28196619/development-and-verification-of-novel-porous-titanium-metaphyseal-cones-for-revision-total-knee-arthroplasty
#20
Ahmad Faizan, Manoshi Bhowmik-Stoker, Amanda E Kirk, Viktor E Krebs, Steven F Harwin, R Michael Meneghini
BACKGROUND: Porous metaphyseal cones are widely used in revision knee arthroplasty. A new system of porous titanium metaphyseal cones has been designed based on the femoral and tibial morphology derived from a computed tomography-based anatomical database. The purpose of this study is to evaluate the initial mechanical stability of the new porous titanium revision cone system by measuring the micromotion under physiologic loading compared with a widely-used existing porous tantalum metaphyseal cone system...
January 18, 2017: Journal of Arthroplasty
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