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https://www.readbyqxmd.com/read/29038750/is-geography-an-accurate-predictor-of-evolutionary-history-in-the-millipede-family-xystodesmidae
#1
Jackson C Means, Paul E Marek
For the past several centuries, millipede taxonomists have used the morphology of male copulatory structures (modified legs called gonopods), which are strongly variable and suggestive of species-level differences, as a source to understand taxon relationships. Millipedes in the family Xystodesmidae are blind, dispersal-limited and have narrow habitat requirements. Therefore, geographical proximity may instead be a better predictor of evolutionary relationship than morphology, especially since gonopodal anatomy is extremely divergent and similarities may be masked by evolutionary convergence...
2017: PeerJ
https://www.readbyqxmd.com/read/29037353/shortened-protocol-for-radiofrequency-ablation-of-perforator%C3%A2-veins
#2
Afsha Aurshina, Anil Hingorani, Sheila Blumberg, Ahmad Alsheekh, Natalie Marks, Amrit Hingorani, Eleanor Iadagarova, Enrico Ascher
BACKGROUND: Routine radiofrequency ablation (RFA) of an incompetent perforator vein (IPV) using the standard treatment protocol at 85°C has a treatment time of 6 minutes. To make treatment time more efficient, we sought to determine the effect of a shortened protocol for radiofrequency stylet (RFS) ablation by comparing the early success using three different temperatures: 85°C, 90°C, and 95°C. METHODS: A retrospective study examined 642 procedures of IPV closures in 255 patients with varying degrees of venous insufficiency treated with RFA from 2009 to 2015...
November 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29021927/split-femoral-nerve-due-to-psoas-tertius-muscle-a-review-with-other-cases-of-variant-muscles-traversing-the-femoral-nerve
#3
Shehzad Khalid, Joe Iwanaga, Marios Loukas, R Shane Tubbs
Leg pain from lumbar disc herniation is a common presentation. However, certain muscular and peripheral nerve variants may present similarly and represent an unrecognized etiology of femoral nerve dysfunction. Such cases might affect the outcome of specific treatment regimes. Therefore, recognition of these variations in anatomy may be useful to the clinician when treating the patient with medically refractory lower limb pain. Some reports have reported variant slips of the psoas and iliacus muscles, which may split the femoral nerve causing a potential risk for nerve entrapment...
August 9, 2017: Curēus
https://www.readbyqxmd.com/read/29017734/anatomy-of-the-vasculature-of-the-lower-leg-and-harvest-of-a-fibular-flap-a-systematic-review
#4
REVIEW
A K Abou-Foul, A Fasanmade, S Prabhu, F Borumandi
The fibular free flap (FFF) is based on the peroneal artery, which has a consistent anatomy and makes a minimal contribution to the pedal circulation. However, certain anatomical variations in the vasculature of the leg might leave the peroneal artery with a major role in the perfusion of the foot, and to raise a FFF could lead to ischaemic complications. Our aim was to review the implications of anatomical variants on planning and harvest of a FFF. We systematically reviewed all relevant publications, and included 28 cases that described a dominant peroneal artery and FFF...
October 7, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28991677/hurst-revisited-are-symptoms-and-signs-of-functional-motor-and-sensory-disorders-dependent-on-idea
#5
Jon Stone, Jennifer Mutch, Denis Giannokous, Ingrid Hoeritzauer, Alan Carson
INTRODUCTION: Symptoms and signs of functional (psychogenic) motor and sensory disorder are often said to be dependent on the patients' idea of what symptoms should be, rather than anatomy and physiology. This hypothesis has however rarely been tested. MATERIALS AND METHODS: Inspired by a brief experiment carried out in 1919 by neurologist Arthur Hurst we aimed to assess the views of healthy non-medical adults towards paralysis and numbness and their response to tests for functional disorders when asked to pretend to have motor and sensory symptoms...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28985441/effects-and-associations-of-nutrition-in-patients-with-venous-leg-ulcers-a-systematic-review
#6
REVIEW
Georgina A Barber, Carolina D Weller, Simone J Gibson
AIMS: To identify the associations and effects of nutritional characteristics and interventions on ulcer outcomes in adult patients with venous leg ulcers. BACKGROUND: Venous leg ulcers are the most prevalent type of lower limb ulcer, however little evidence exists regarding the relationship between nutritional status and ulcer healing. DESIGN: A systematic search of English language articles was conducted using the Cochrane Collaboration Handbook for Systematic Reviews of Interventions...
October 6, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28984656/the-distally-based-peroneus-brevis-flap-the-5-step-technique
#7
Luigi Troisi, Thomas Wright, Umraz Khan, Ahmed T Emam, Thomas W L Chapman
The peroneus brevis flap was first described as proximally based by Mathes et al (Surg Clin North Am. 1974;54:1337-1354) and later by Jackson and Scheker (Injury. 1982;13:324-330). A distally based version of this flap by Mathes and Nahai (Reconstructive Surgery: Principles, Anatomy and Technique. 1997:1437e46) was subsequently described in 1997. The first case series of distally based flaps was published by Eren et al (Plast Reconstr Surg. 2001;107:1443-1448).In our experience, the distally based flap is a useful muscle flap to reconstruct small defects in the lateral distal third of the leg...
October 3, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28976394/-approach-to-venous-diseases-in-the-elderly
#8
Ahmet Kürşat Bozkurt, Ozan Onur Balkanay
Incidence and severity of both deep vein thrombosis and chronic venous insufficiency are increased with age. Today, however, the significance of these diseases in the elderly patient population are still poorly comprehended. Although most patients have a history of previous treatment, chronic venous insufficiency is usually encountered in the advanced clinical stage. As a result, there is an increase in mobility restrictions, the need for assistance in daily activities and the risk of falls in elderly patients...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28924737/contribution-to-the-anatomical-nomenclature-concerning-lower-limb-anatomy
#9
David Kachlik, Vladimir Musil, Vaclav Baca
PURPOSE: The aim of this article is to extend and revise the sections of Terminologia Anatomica (TA) dealing with the lower limb structures and to justify the use of newly proposed anatomical terms in clinical medicine, education, and research. METHODS: Anatomical terms were gathered during our educational experience from anatomical textbooks and journals and compared with the four previous editions of the official Latin anatomical nomenclature. RESULTS: The authors summarise 270 terms with their definitions and explanations for both constant and variable morphological structures (bones, joints, muscles, vessels, nerves and superficial structures) of the hip, thigh, knee, leg, ankle, and foot completed with several grammatical remarks and some general anatomical terms...
September 18, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28916885/geometric-analysis-and-clinical-outcome-of-two-cemented-stems-for-primary-total-hip-replacement-with-and-without-modular-necks
#10
Marcel Haversath, Christine Wendelborn, Marcus Jäger, Boris Schmidt, Wojciech Kowalczyk, Stefan Landgraeber
INTRODUCTION: Restoration of the physiological biomechanical principles of the hip is crucial in total hip replacement. The aim of this study was to compare an arthroplasty system with different offset options (a: Exeter(®)) with a dual-modular stem (b: Profemur Xm(®)). MATERIALS AND METHODS: A local and an inertial coordinate system were used to assist the description of the components' assembly in the prosthesis. A resection line of the femoral head in standard position was added to the arthroplasties and geometric parameters were measured...
September 15, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28838837/osteomyocutaneous-fibular-flap-harvesting-computer-assisted-planning-of-perforator-vessels-using-computed-tomographic-angiography-scan-and-cutting-guide
#11
Salvatore Battaglia, Vincenzo Maiolo, Gabriella Savastio, Maurizio Zompatori, Federico Contedini, Elisa Antoniazzi, Riccardo Cipriani, Claudio Marchetti, Achille Tarsitano
INTRODUCTION: Mandibular reconstruction performed after virtual planning has become more common during recent years. The gold standard for extensive mandibular reconstruction is of course a fibular free flap. In designing an osteomyocutaneous fibula flap, poor planning, aberrant anatomy and/or inadequate perforator vessels are the most frequent causes of complications and may force the surgeon to modify the flap design, explore the contralateral leg or harvest an additional microvascular flap...
October 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28836242/-discussion-on-standardized-implementation-of-laparoscopic-radical-lymphadenectomy-for-distal-gastric-cancer
#12
Zejian Lyu, Junjiang Wang, Yong Li
Laparoscopic radical gastrectomy for gastric cancer has been widely applied in clinical practice, and its indications have been extended from early gastric cancer to advanced gastric cancer. It is acknowledged that laparoscopic radical gastrectomy is technically challenging because of the complexity of anatomy, rich blood supply, and extensive lymph node dissection. This paper primarily intends to share the experience of laparoscopic radical D2 gastrectomy for distal gastric cancer with details of choosing the location of Trocar, surgical approaches and the sequence of lymph node dissection...
August 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28832938/energetic-cost-of-walking-in-fossil-hominins
#13
M Vidal-Cordasco, A Mateos, G Zorrilla-Revilla, O Prado-Nóvoa, J Rodríguez
OBJECTIVE: Many biomechanical studies consistently show that a broader pelvis increases the reaction forces and bending moments across the femoral shaft, increasing the energetic costs of unloaded locomotion. However, a biomechanical model does not provide the real amount of metabolic energy expended in walking. The aim of this study is to test the influence of pelvis breadth on locomotion cost and to evaluate the locomotion efficiency of extinct Pleistocene hominins. MATERIAL AND METHODS: The current study measures in vivo the influence of pelvis width on the caloric cost of locomotion, integrating anthropometry, body composition and indirect calorimetry protocols in a sample of 46 subjects of both sexes...
August 19, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28818476/complex-anatomic-abnormalities-of-the-lower-leg-muscles-and-tendons-associated-with-phocomelia-a-case-report
#14
Thomas Hodo, Mark Hamrick, Yulia Melenevsky
Musculoskeletal anatomy is widely known to have components that stray from the norm in the form of variant muscle and tendon presence, absence, origin, insertion, and bifurcation. Although these variant muscles and tendons might be deemed incidental and insignificant findings by most, they can be important contributors to pathologic physiology or, more importantly, an option for effective treatment. In the present case report, we describe a patient with phocomelia and Müllerian abnormalities secondary to in utero thalidomide exposure...
August 14, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28818230/symptomatic-compression-of-right-iliac-vein-after-right-iliac-artery-stent-placement
#15
Lindsay Young, Jeontaik Kwon, Mariano Arosemena, Dawn Salvatore, Paul DiMuzio, Babak Abai
Right lower extremity edema can be a presenting symptom of iliocaval compression syndrome, even in the absence of deep vein thrombosis. It has been reported in idiopathic and rarely, iatrogenic, cases secondary to variant anatomy, arterial stents, and bony hardware. Classically seen in the more confined left common iliac vein as May-Thurner syndrome, it is rare on the right side. We report an unusual case of acute right common iliac vein compression after right iliac stent placement leading to symptomatic right leg edema...
September 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28818219/contemporary-outcomes-after-venography-guided-treatment-of-patients-with-may-thurner-syndrome
#16
Johnathon C Rollo, Steven M Farley, Adam Z Oskowitz, Karen Woo, Brian G DeRubertis
OBJECTIVE: Patients with May-Thurner syndrome (MTS) present with a spectrum of findings ranging from mild left leg edema to extensive iliofemoral deep venous thrombosis (DVT). Whereas asymptomatic left common iliac vein (LCIV) compression can be seen in a high proportion of normal individuals on axial imaging, the percentage of these persons with symptomatic compression is small, and debate exists about the optimal clinical and diagnostic criteria to treat these lesions in patients with symptomatic venous disease...
September 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28741029/subtrochanteric-femoral-shortening-osteotomy-combined-with-cementless-total-hip-replacement-for-crowe-type-iv-developmental-dysplasia-a-retrospective-study
#17
Giuseppe Rollo, Giuseppe Solarino, Giovanni Vicenti, Girolamo Picca, Massimiliano Carrozzo, Biagio Moretti
BACKGROUND: Total hip replacement for high dislocation of the hip presents some difficulties, considering patients' young ages, the abnormal hip anatomy and the high rate of complications. In this study, we present our experience in terms of clinical and radiological results in the treatment of Crowe type IV hips with subtrochanteric femoral shortening osteotomy and cementless total hip replacement. MATERIALS AND METHODS: We retrospectively reviewed 15 patients with Crowe type IV hip dysplasia (two bilateral cases for a total of 17 hips) treated with cementless total hip replacement associated with shortening subtrochanteric osteotomies (nine transversal and eight Z-shape osteotomies) between March 2000 to February 2006...
July 24, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28736620/peroneal-tendon-disorders
#18
REVIEW
Kinner Davda, Karan Malhotra, Paul O'Donnell, Dishan Singh, Nicholas Cullen
Pathological abnormality of the peroneal tendons is an under-appreciated source of lateral hindfoot pain and dysfunction that can be difficult to distinguish from lateral ankle ligament injuries.Enclosed within the lateral compartment of the leg, the peroneal tendons are the primary evertors of the foot and function as lateral ankle stabilisers.Pathology of the tendons falls into three broad categories: tendinitis and tenosynovitis, tendon subluxation and dislocation, and tendon splits and tears. These can be associated with ankle instability, hindfoot deformity and anomalous anatomy such as a low lying peroneus brevis or peroneus quartus...
June 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28727709/transforaminal-percutaneous-endoscopic-discectomy-and-foraminoplasty-after-lumbar-spinal-fusion-surgery
#19
Jian-Jun Wu, Hui-Zhen Chen, Changkun Zheng
BACKGROUND: The most common causes of pain following lumbar spinal fusions are residual herniation, or foraminal fibrosis and foraminal stenosis that is ignored, untreated, or undertreated. The original surgeon may advise his patient that nothing more can be done in his opinion that the nerve was visually decompressed by the original surgery. Post-operative imaging or electrophysiological assessment may be inadequate to explain all the reasons for residual or recurrent symptoms. Treatment of failed lumbar spinal fusions by repeat traditional open revision surgery usually incorporates more extensive decompression causing increased instability and back pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28678866/correlation-between-investment-in-sexual-traits-and-valve-sexual-dimorphism-in-cyprideis-species-ostracoda
#20
Maria João Fernandes Martins, Gene Hunt, Rowan Lockwood, John P Swaddle, David J Horne
Assessing the long-term macroevolutionary consequences of sexual selection has been hampered by the difficulty of studying this process in the fossil record. Cytheroid ostracodes offer an excellent system to explore sexual selection in the fossil record because their readily fossilized carapaces are sexually dimorphic. Specifically, males are relatively more elongate than females in this superfamily. This sexual shape difference is thought to arise so that males carapaces can accommodate their very large copulatory apparatus, which can account for up to one-third of body volume...
2017: PloS One
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