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https://www.readbyqxmd.com/read/29347832/wire-placement-in-the-sustentaculum-tali-using-a-2d-projection-based-software-application-for-mobile-c-arms-cadaveric-study
#1
Benedict Swartman, Dirk Frere, Wei Wei, Marc Schnetzke, Stephan Grechenig, Amir Matityahu, Nils Beisemann, Holger Keil, Jochen Franke, Paul Alfred Grützner, Sven Yves Vetter
BACKGROUND: Indirect screw fixation of the sustentaculum tali in the lateral-medial direction can be challenging due to the complex calcaneal anatomy. A novel 2-dimensional (2D) projection-based software application detects Kirschner wires (K-wires) and visualizes their intended direction as a colored trajectory. The aim of this prospectively randomized cadaver study was to investigate whether the software would facilitate the indirect K-wire placement in the sustentaculum tali. METHODS: In 20 cadaver foot specimens, K-wires were placed indirectly in the sustentaculum tali by an experienced and an inexperienced surgeon, with and without using the application...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29346148/vertical-profunda-artery-perforator-flap-for-plantar-foot-wound-closure-a-new-application
#2
Allyson R Alfonso, James L Mayo, Vishal K Sharma, Robert J Allen, Ernest S Chiu
BACKGROUND: Plantar foot reconstruction requires special consideration of both form and function. There are several fasciocutaneous flap options, each with indications and reservations. CASE STUDY: This case presents a new application of the vertical profunda artery perforator flap for definitive closure of a neuropathic foot ulcer in a young woman with spina bifida. The postoperative course was uneventful, and the flap survived completely. The surgical and donor sites were without wound recurrence at 5-month follow-up...
February 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29278836/the-fibularis-digiti-quinti-tendon-a-cadaveric-study-with-anthropological-and-clinical-considerations
#3
Morgan E Chaney, Tung V Dao, Benjamin S Brechtel, Stephanie J Belovich, Kathy J Siesel, John R Fredieu
In addition to the fibularis longus and brevis muscles, a number of anomalous muscles or tendons can arise from the lateral compartment of the leg. The authors describe a bilateral and robust fibularis digiti quinti (FDQ) tendon present in the foot of a 99-year-old female cadaver, present the incidence of this tendon in a cohort of 26 cadavers dissected by podiatric-medical students for a lower-extremity anatomy course, and discuss the anthropological and clinical significance of the findings. In these specimen, the FDQ tendon arose from the fibularis brevis tendon proximal to the lateral malleolus, but did not separate completely from the fibularis brevis tendon until passing through the inferior fibular retinaculum...
December 5, 2017: Foot
https://www.readbyqxmd.com/read/29275904/the-achilles-tendon-in-healthy-subjects-an-anthropometric-and-ultrasound-mapping-study
#4
Nick N Patel, Sameh A Labib
Ultrasonography is an inexpensive, fast, and reliable imaging technique widely used to assess the Achilles tendon. Although significant data exists regarding pathologic tendon changes, ultrasound data from healthy individuals are more limited. We aimed to better characterize ultrasound Achilles tendon measurements in healthy individuals and identify important correlating factors. The information collected included patient demographics, body habitus, activity level, foot dominance, and resting ankle angle. Ultrasound analysis was performed bilaterally on the Achilles tendons of 50 subjects using a high-frequency transducer to measure tendon width, thickness, cross-sectional area, and length...
December 21, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29251513/combination-of-pedcat-weightbearing-ct-with-pedography-assessment-of-the-relationship-between-anatomy-based-foot-center-and-force-pressure-based-center-of-gravity
#5
Martinus Richter, Francois Lintz, Stefan Zech, Stefan Andreas Meissner
BACKGROUND: A customized pedography sensor (Pliance; Novel, Munich, Germany) was inserted into a pedCAT (Curvebeam, Warrington, PA). The aim of this study was to analyze the relative position of the anatomical foot center (FC) and the pedographic center of gravity (COG). The hypothesis was that FC should be a good predictor of mediolateral position of COG but not longitudinal since hindfoot anatomy allows free anteroposterior movement but limited mediolateral movement. METHODS: In 90 patients (180 feet), a pedCAT scan with simultaneous pedography with full weightbearing in a standing position was performed...
December 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29221678/hybrid-imaging-in-foot-and-ankle-disorders
#6
R García Jiménez, F J García-Gómez, E Noriega Álvarez, C Calvo Morón, J J Martín-Marcuartu
Disorders of the foot and ankle are some of the most frequent ones affecting the musculoskeletal system and have a great impact on patients' quality of life. Accurate diagnosis is an important clinical challenge because of the complex anatomy and function of the foot, that make it difficult to locate the source of the pain by routine clinical examination. In the study of foot pathology, anatomical imaging (radiography, magnetic resonance imaging [MRI], ultrasound and computed tomography [CT]) and functional imaging (bone scan, positron emission tomography [PET] and MRI) techniques have been used...
December 6, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/29205431/anatomic-delineation-of-tarsal-tunnel-innervation-via-ultrasonography
#7
Alvaro Iborra, Manuel Villanueva, Stephen L Barrett, Edgardo Rodriguez-Collazo, Pablo Sanz
OBJECTIVES: High-resolution ultrasonography (US) can play an important role in studying nerves, as it has several advantages. Entrapments of distal tibial nerve branches can be mapped out or diagnosed with selective anesthetic blocks, and US can guide therapeutic procedures, such as radiofrequency ablation and selective infiltrations of specific nerve branches. The aim of this study was to verify that US is an effective method for accurately locating the posterior tibial nerve and its terminal branches, such as the medial calcaneal branch, the first calcaneal branch, and the medial and lateral plantar nerves...
December 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29202983/influence-of-tibialis-posterior-muscle-activation-on-foot-anatomy-under-axial-loading-a-biomechanical-ct-human-cadaveric-study
#8
Koen Dullaert, Jennifer E Hagen, Paul Simons, Florian Gras, Boyko Gueorguiev, R Geoff Richards, Kajetan Klos
BACKGROUND: Collapse of the medial longitudinal arch and subluxation of the subtalar joint are common occurrences in adult flatfoot deformity. Controversy exists about the role of the tibialis posterior (TP) tendon as first and/or essential lesion. Subtle changes in the foot configuration can occur under weight bearing. PURPOSE: This human cadaveric study is designed to investigate the effect that isolated actuation of the TP tendon has on the medial longitudinal arch and the hindfoot configuration under simulated weight bearing...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29166622/morphological-characteristics-and-variations-of-the-human-quadratus-plantae-muscle
#9
Bettina Pretterklieber
The quadratus plantae (QP) is a highly variable structure. A number of partly inexact descriptions of this entity have been provided in textbooks of anatomy. Although several authors have examined the QP, its exact site of origin and type of insertion have hitherto not been specified. The aim of this study has been to provide detailed qualitative and quantitative data about the number of heads, points of origin, and type of insertion of the QP. The QP in both feet of 50 formalin-fixed specimens of body donors (25 men and women) were analyzed by gross anatomical dissection...
November 19, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29156170/computed-navigation-guidance-for-ankle-replacement-in-the-setting-of-ankle-deformity
#10
REVIEW
Feras J Waly, Nicholas E Yeo, Murray J Penner
Total ankle replacement (TAR) has evolved over the past decade as a treatment for end-stage ankle arthritis with improved survivorship. Despite the improving outcomes, ankle deformity represents a challenge to the foot and ankle surgeon with increased risk of implant failure. The use of preoperative computer-assisted guidance has led to better understanding the 3-dimensional ankle anatomy and associated deformities and allows for reproducible, anatomic placement of the TAR components.
January 2018: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/29138591/anatomical-etiology-of-pseudo-sciatica-from-superior-cluneal-nerve-entrapment-a-laboratory-investigation
#11
Tomoyuki Konno, Yoichi Aota, Hiroshi Kuniya, Tomoyuki Saito, Ning Qu, Shogo Hayashi, Shinichi Kawata, Masahiro Itoh
Objective: The superior cluneal nerve (SCN) may become entrapped where it pierces the thoracolumbar fascia over the iliac crest; this can cause low back pain (LBP) and referred pain radiating into the posterior thigh, calf, and occasionally the foot, producing the condition known as "pseudo-sciatica." Because the SCN was thought to be a cutaneous branch of the lumbar dorsal rami, originating from the dorsal roots of L1-L3, previous anatomical studies failed to explain why SCN causes "pseudo-sciatica"...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29122317/sonographic-and-anatomic-description-of-the-subtalar-joint
#12
Peter Mandl, David Bong, Peter V Balint, Hilde Berner Hammer, Maribel Miguel, Esperanza Naredo, Lene Terslev, Ingrid Möller
Our study provides a detailed anatomic and sonographic description of the subtalar joint, a single joint that, anatomically, is divided into the anterior subtalar joint (ASTJ) and the posterior subtalar joint (PSTJ). Cadaver specimens of the ankle and foot were examined in detail by ultrasound (US), and the subtalar joints of all the specimens were injected with colored latex of a contrasting color under US guidance. Compatible with other studies, examination of the sections revealed lack of communication between the ASTJ and the PSTJ and communication between the PSTJ and the posterior recess of the tibiotalar joint...
January 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29098722/the-structure-of-the-cutaneous-pedal-glands-in-the-banded-snail-cepaea-hortensis-m%C3%A3-ller-1774
#13
Janek von Byern, Norbert Cyran, Waltraud Klepal, Livia Rudoll, Johannes Suppan, Sophie Greistorfer
Although gastropods have been crawling through the ocean and on the land for 60 million years, we still know very little about the sticky mucus produced in their foot. Most research has been focused on marine species in particular and, to a lesser extent, on the well-known terrestrial species Arion vulgaris and Cornu aspersum. Within this study, we aim to characterize the foot anatomy of a smaller representative of the family Helicidae, the banded snail Cepaea hortensis. We are particularly interested in the microanatomy of the foot glands, their position, and the histochemical nature of their secretory content...
November 3, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29098684/comparative-hindlimb-myology-of-foot-propelled-swimming-birds
#14
Glenna T Clifton, Jennifer A Carr, Andrew A Biewener
Several groups of birds have convergently evolved the ability to swim using their feet despite facing trade-offs with walking. However, swimming relative to terrestrial performance varies across these groups. Highly specialized divers, such as loons and grebes, excel at swimming underwater but struggle to stand on land, whereas species that primarily swim on the water surface, such as Mallards, retain the ability to move terrestrially. The identification of skeletal features associated with a swimming style and conserved across independent groups suggests that the hindlimb of foot-propelled swimming birds has adapted to suit the physical challenges of producing propulsive forces underwater...
November 3, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29078820/understanding-the-anatomy-and-biomechanics-of-ankle-tendons
#15
REVIEW
Christopher P Chiodo
The tendons that cross the ankle are complex and sophisticated structures that enable standing and forward propulsion and the ability to accommodate uneven ground. Understanding the biomechanics and local anatomy of these tendons is essential to the treatment of disorders of the foot and ankle, whether it be in formulating an appropriate physical therapy regimen or planning a reconstructive surgical procedure.
December 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29077492/motor-evoked-potentials-of-the-abductor-hallucis-muscle-and-their-relationship-with-foot-arch-functional-anatomy
#16
Tyrone Mayorga, Erato Giokas, Anaida Abagyan, Dhaval Patel, Yasmin Sarraf, Michael Paula, Eileen Chusid, Anthony D'antoni, Fortunato Battaglia
BACKGROUND: The present study aimed to investigate the correlation between abductor hallucis (AH) muscle motor evoked potential (MEP) amplitude and foot arch anatomy. METHODS: Twelve healthy individuals underwent foot arch measurement using a digital photographic technique and measurements of cortical excitability using transcranial magnetic stimulation applied on the cortical representation area of the right AH muscle. Truncated foot length and dorsal height were then measured and used to create the arch height index (AHI)...
September 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/29024511/the-relationship-between-linear-osteological-and-radiographic-measurements-of-the-human-calcaneus-and-talus
#17
David Agoada
Plain radiographs of the foot are a common form of examination in individuals when medical evaluation is indicated. Their availability makes them useful for studying human variation where large sample sizes are crucial. Calcaneal and talar morphology are critical in the understanding of human foot form and function, but few studies have examined the accuracy of linear measurements of these bones taken from radiographs. If linear measurements are to be used in quantitative analysis, their accuracy must first be demonstrated...
October 10, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29017734/anatomy-of-the-vasculature-of-the-lower-leg-and-harvest-of-a-fibular-flap-a-systematic-review
#18
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...
November 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28990838/3d-printing-calcaneal-fractures-continuously-improving-our-care-by-making-a-complex-problem-tangible
#19
Tim Schepers, Dominique Misselyn
Calcaneal fractures are amongst the most complex injuries known to man. Their intricate anatomy and extensive damage after trauma make them difficult to understand and treat. Most surgeons specialized in foot and ankle trauma agree that in most patients surgical managements yields the best result. Functional outcome is largely dependent on preventing complications and restoring anatomy. Reconstruction of height and suntalar joint congruency for example are both associated with improved outcome. Over the years insight in the complex (patho-)anatomy has increased...
October 9, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28982055/ontogenetic-changes-in-foot-strike-pattern-and-calcaneal-loading-during-walking-in-young-children
#20
Angel Zeininger, Daniel Schmitt, Jody L Jensen, Liza J Shapiro
The assumption that the morphology of the human calcaneus reflects high and cyclical impact forces at heel strike during adult human walking has never been experimentally tested. Since a walking step with a heel strike is an emergent behavior in children, an ontogenetic study provides a natural experiment to begin testing the relationship between the mechanics of heel strike and calcaneal anatomy. This study examined the ground reaction forces (GRFs) of stepping in children to determine the location of the center of pressure (COP) relative to the calcaneus and the orientation and magnitude of ground reaction forces during foot contact...
September 23, 2017: Gait & Posture
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