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https://www.readbyqxmd.com/read/27904023/early-embryonic-development-of-long-tendons-in-the-human-foot
#1
Masahito Yamamoto, Yasuhiro Shiraishi, Kei Kitamura, Zhe Wu Jin, Gen Murakami, Jose Francisco Rodríguez-Vázquez, Shin-Ichi Abe
To examine a common plantar tendinous plate for long flexors of the toe and fingers in human embryos, we observed sections of 10 embryos at 5-6 weeks (crown-rump length or CRL 15-21 mm). The heel or tuber of the calcaneus was underdeveloped in 3 embryos with CRL 15 mm and the talus appeared not to be piled up on the calcaneus but these two bones were arranged along the lateromedial axis. As reported in the hand, we demonstrated, in the deep side of tarsal bones, a common tendinous plate formed by a joining of the flexor halluces longus and flexor digitorum longus tendons...
2016: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/27888844/mr-imaging-of-the-plantar-plate-normal-anatomy-turf-toe-and-other-injuries
#2
REVIEW
Caio Nery, Daniel Baumfeld, Hilary Umans, André F Yamada
The metatarsophalangeal (MTP) joint complex is a weight-bearing structure important to the biomechanics of the standing position, walking, shoe wearing, and sport participation. Acute dorsiflexion injury of the first MTP joint, "turf toe," is common among American football and soccer players. The first and lesser MTP joint complexes can be affected by degenerative or inflammatory arthritis, infarct, and infection. These conditions can lead to plantar plate disruption. Imaging studies help physicians to properly diagnose and treat this condition...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27881829/biomechanical-comparison-of-fixation-devices-for-first-metatarsocuneiform-joint-arthrodesis
#3
Ashleen R Knutsen, John F Fleming, Edward Ebramzadeh, Nathan C Ho, Tibor Warganich, Thomas G Harris, Sophia N Sangiorgio
: Common surgical treatment of first tarsal-metatarsal arthritis is by first metatarsocuneiform joint arthrodesis. While crossed-screw and locking plate fixation are the most widely used methods, a novel construct was designed to alleviate soft tissue irritation while still providing stable fixation. Using anatomic first metatarsal and medial cuneiform composites, we compared 3 arthrodesis implants (crossed-screw, dorsal locking plate, and IO Fix) under 2 cyclic bending loading scenarios (cantilever and 4-point bending)...
November 23, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27881742/association-of-abnormal-metatarsal-parabola-with-second-metatarsophalangeal-joint-plantar-plate-pathology
#4
Adam E Fleischer, Erin E Klein, Maheen Ahmad, Shivang Shah, Fernanda Catena, Lowell Scott Weil, Lowell Weil
BACKGROUND: Plantar plate pathology is common, yet it is unclear whether, and to what extent, the length of the second metatarsal contributes to this problem. METHODS: We conducted a retrospective case-control (1:2) study to examine radiographic risk factors for plantar plate tears. One hundred patients (age 55.7 ± 12.3 years) with plantar plate injuries and 200 healthy controls (age 56.3 ± 11.3 years) were included. Cases were defined as patients with nonacute, isolated, plantar plate pathology of the second metatarsophalangeal joint confirmed by intraoperative inspection at a single foot and ankle specialty practice from June 1, 2007, to January 31, 2014...
November 22, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27866887/quality-of-early-union-after-first-metatarsophalangeal-joint-arthrodesis
#5
Florian Wanivenhaus, Norman Espinosa, Philippe M Tscholl, Fabian Krause, Stephan H Wirth
The aim of the present retrospective cohort study was to assess the quality of union and the clinical outcomes in patients who had undergone first metatarsophalangeal joint (MTPJ) fusion using a dorsal plate and plantar lag screw. From March 2011 to December 2012, the clinical and radiographic data of 39 patients (41 feet) who had undergone first MTPJ fusion using a compressive locking plate were retrospectively reviewed. All patients had undergone postoperative computed tomography at 6 weeks postoperatively to assess union...
November 17, 2016: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27857950/the-thermal-probe-test-a-novel-behavioral-assay-to-quantify-thermal-paw-withdrawal-thresholds-in-mice
#6
Jennifer R Deuis, Irina Vetter
Rodent models are frequently used to improve our understanding of the molecular mechanisms of pain and to develop novel analgesics. Robust behavioral assays that quantify nociceptive responses to different sensory modalities, such has heat, are therefore needed. Here, we describe a novel behavioral assay to quantify thermal paw withdrawal thresholds in mice, called the thermal probe test, and compared it with other methods commonly used to measure heat thresholds, namely the Hargreaves test and the dynamic and conventional hot plate tests...
April 2016: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/27852647/plantar-plate-repair-for-lesser-metatarsophalangeal-joint-instability
#7
Wesley W Flint, David M Macias, James R Jastifer, Jesse F Doty, Christopher B Hirose, Michael J Coughlin
BACKGROUND: Lesser metatarsophalangeal (MTP) joint instability is a common cause of forefoot pain. Advances in operative technique and instrumentation have made it possible to anatomically treat plantar plate tears through a dorsal approach. Our goal was to evaluate the subjective, functional, and radiographic outcomes of plantar plate repair (PPR) from a dorsal approach. METHODS: A prospective case series was performed evaluating the results of PPR in 97 feet with 138 plantar plate tears...
November 15, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27837037/comparison-of-locking-plate-with-interfragmentary-screw-versus-plantarly-applied-anatomic-locking-plate-for-lapidus-arthrodesis-a-biomechanical-cadaveric-study
#8
James M Cottom, Joseph S Baker
: Arthrodesis of the first metatarsal cuneiform joint, or Lapidus procedure, is a widely accepted treatment for hallux valgus. Recent studies have focused on comparing various constructs for this procedure both in the laboratory and clinical settings. The current study compared in a cadaveric model the strength of 2 constructs. The first construct utilized a medially applied low-profile locking plate and an interfragmentary screw directed from plantar-distal to dorsal-proximal. The second construct consisted of a plantarly applied plate with a compression screw placed through the plate from plantar-distal to dorsal-proximal...
November 10, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27782089/plantar-pressure-detection-with-fiber-bragg-gratings-sensing-system
#9
Tsair-Chun Liang, Jhe-Jhun Lin, Lan-Yuen Guo
In this paper, a novel fiber-optic sensing system based on fiber Bragg gratings (FBGs) to measure foot plantar pressure is proposed. This study first explores the Pedar-X insole foot pressure types of the adult-size chart and then defines six measurement areas to effectively identify four foot types: neutral foot, cavus foot, supinated foot and flat foot. The plantar pressure signals are detected by only six FBGs, which are embedded in silicone rubber. The performance of the fiber optic sensing is examined and compared with a digital pressure plate of i-Step P1000 with 1024 barometric sensors...
October 22, 2016: Sensors
https://www.readbyqxmd.com/read/27726748/ct-and-mr-imaging-of-the-postoperative-ankle-and-foot
#10
Gary M LiMarzi, Kurt F Scherer, Michael L Richardson, David R Warden, Christopher W Wasyliw, Jack A Porrino, Christopher R Pettis, Gideon Lewis, Christopher C Mason, Laura W Bancroft
A variety of surgical procedures exist for repair of both traumatic and degenerative osseous and soft-tissue pathologic conditions involving the foot and ankle. It is necessary for the radiologist to be familiar with these surgical procedures, so as to assess structural integrity, evaluate for complicating features, and avoid diagnostic pitfalls. Adequate interpretation of postoperative changes often requires access to surgical documentation to evaluate not only the surgery itself but the expected timeline for resolution of normal postoperative changes versus progressive disease...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27676992/spastic-cocontraction-of-plantar-flexors-during-swing-phase-of-gait-in-chronic-hemiparesis
#11
Mouna Ghedira, Jean-Michel Gracies, Valentina Mardale, Catherine-Marie Loche, Inke Marie Albertsen, Nicolas Bayle, Emilie Hutin
OBJECTIVE: In spastic hemiparesis, quantify agonist recruitment of tibialis anterior and triceps surae spastic cocontraction during swing phase of gait. MATERIAL/PATIENTS AND METHODS: Thirty-seven subjects with chronic hemiparesis (49±14 years, mean±SD; time since lesion, 8±7 years) performed a 3D gait analysis, barefoot at comfortable speed (10 optoelectronic cameras, 6 dynamometric force plates, analysis of 9 cycles), with bilateral electromyography of tibialis anterior (TA), soleus (SO) and gastrocnemius medialis (GM)...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27672014/efficacy-of-foot-and-ankle-corticosteroid-injections
#12
John Grice, Daniel Marsland, George Smith, James Calder
BACKGROUND: Corticosteroid injections have been used for a variety of foot and ankle pathologies over the years, and our aim was to evaluate the efficacy and safety of them in our clinic. MATERIALS AND METHODS: We performed a retrospective review of notes and a telephone questionnaire on the clinical outcome of all patients who underwent a corticosteroid injection of the foot or ankle in a year. All procedures were performed in an outpatient setting by a consultant musculoskeletal radiologist using either ultrasound or X-ray guidance and had a minimum of 2 years of follow-up...
September 25, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27547243/metatarsophalangeal-joint-stability-a-systematic-review-on-the-plantar-plate-of-the-lesser-toes
#13
REVIEW
Nico M G Maas, Margot van der Grinten, Wichor M Bramer, Gert-Jan Kleinrensink
BACKGROUND: Instability of the metatarsophalangeal (MTP) joints of the lesser toes (digiti 2-5) is increasingly being treated by repair of the plantar plate (PP). This systematic review examines the anatomy of the plantar plate of the lesser toes, and the relation between the integrity of the plantar plates of the lesser toes and lesser MTP joint stability. METHODS: The databases of Embase.com, Medline (Ovid), Web of Science, Scopus, Cochrane, Pubmed not medline, Cinahl (ebsco), ProQuest, Lilacs, Scielo and Google Scholar were searched in June 2015 from inception...
2016: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/27542800/long-term-outcome-of-first-metatarsophalangeal-joint-fusion-in-the-treatment-of-severe-hallux-rigidus
#14
Michel Chraim, Peter Bock, Hamza M Alrabai, Hans-Jörg Trnka
AIMS: This study was aimed to study the arthrodesis of the first metatarsophalangeal joint using an oblique interfragmentary lag screw and dorsal plate as an effective option for the treatment of hallux rigidus. Few researchers have studied the outcome of this surgical method over a long follow-up period. PATIENTS AND METHODS: We performed a retrospective review of 60 patients status post arthrodesis of the first metatarsophalangeal joint. The mean age was 68.5 years and average follow-up lasted for 47...
August 20, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27515436/improving-the-ground-reaction-force-prediction-accuracy-using-one-axis-plantar-pressure-expansion-of-input-variable-for-neural-network
#15
Su-Bin Joo, Seung Eel Oh, Joung Hwan Mun
In this study, we describe a method to predict 6-axis ground reaction forces based solely on plantar pressure (PP) data obtained from insole type measurement devices free of space limitations. Because only vertical force is calculable from PP data, a wavelet neural network derived from a non-linear mapping function was used to obtain 3-axis ground reaction force in medial-lateral (GRFML), anterior-posterior (GRFAP) and vertical (GRFV) and 3-axis ground reaction moment in sagittal (GRFS), frontal (GRFF) and transverse (GRFT) data for the remaining axes and planes...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27428595/effects-of-duration-of-wearing-high-heeled-shoes-on-plantar-pressure
#16
Chun-Ming Yin, Xiao-Hua Pan, Yu-Xin Sun, Zhi-Bin Chen
In the present study we investigated the effects of different durations of using high-heeled shoes on plantar pressure and gait. A questionnaire survey and dynamic plantar pressure measurements were performed in 20 control females and 117 females who had worn high-heeled shoes for a long time. According to the duration of using high-heeled shoes (as specified in the questionnaire), subjects were divided into a control group and five groups with different durations of use (i.e. <2years, 2-5years, 6-10years, 11-20years and >20years)...
October 2016: Human Movement Science
https://www.readbyqxmd.com/read/27421789/effect-of-subacute-agomelatine-treatment-on-painful-diabetic-neuropathy-involvement-of-catecholaminergic-mechanisms
#17
Taliha H Aydın, Özgür D Can, Ümide Demir Özkay, Nazlı Turan
In this study, we investigated the effects of subacute agomelatine (40 and 80 mg/kg) administration on chronic hyperglycemia, metabolic parameters, and pain perception in streptozotocin-induced diabetic rats. Fasting blood glucose measurements and oral glucose tolerance tests were performed to evaluate the effect of agomelatine on glycemia, while metabolic parameters were monitored using metabolic cages. Potential effect of agomelatine on diabetes-induced mechanical and thermal allodynia was evaluated using dynamic plantar aesthesiometer and warm plate (38 °C) tests, respectively...
December 2016: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/27397429/centhaquin-attenuates-hyperalgesia-and-non-evoked-guarding-in-a-rat-model-of-postoperative-pain-primarily-through-%C3%AE-2b-adrenoceptors
#18
Mary G Leonard, Shawn Jung, Shridhar V Andurkar, Anil Gulati
Centhaquin has been shown to produce antinociception in the mouse hot plate and tail flick assays through the opioid, the α2A and α2B adrenoceptors. Present study was conducted to determine the effects of centhaquin in a rat model of postoperative pain. Involvement of opioid, and adrenergic receptors was assessed by pretreating rats with antagonists at the opioid (naloxone), α2-(atipamezole) or α2B-(imiloxan) adrenergic receptors. Postoperative pain was induced by hind paw plantar incision in male Sprague Dawley rats...
October 15, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27336454/etiology-clinical-assessment-and-surgical-repair-of-plantar-plate-tears
#19
Caio Nery, Hilary Umans, Daniel Baumfeld
The plantar plate has recently gained more attention as an important structure contributing to lesser metatarsophalangeal joint stability. This has prompted a significant growth of interest in the anatomy and biomechanics of the plantar plate and in the diagnosis and treatment of its injuries. Improved understanding of plantar plate function and predictable patterns of degeneration and failure has led to the development of a clinical staging and surgical grading system of plantar plate lesions. Relatively recent innovations allow the surgeon to access and repair plantar plate tears directly with reinsertion onto the base of the proximal phalanx...
April 2016: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/27336453/imaging-of-lesser-metatarsophalangeal-joint-plantar-plate-degeneration-tear-and-repair
#20
James M Linklater, Stephen J Bird
Plantar plate degeneration and tear is a common cause of forefoot pain, typically involving the second metatarsophalangeal joint at the proximal phalangeal insertion laterally, frequently confused with the second web space Morton neuroma. The condition has received increased attention with the development of surgical techniques that can result in successful repair of the plantar plate and substantial improvement in patient symptoms. High-resolution MRI or ultrasound can confirm a diagnosis of plantar plate degeneration and tear and exclude other pathologies, particularly Morton neuroma...
April 2016: Seminars in Musculoskeletal Radiology
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