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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/27903928/restoring-the-anatomy-of-calcaneal-fractures-a-simple-technique-with-radiographic-review
#2
James M Cottom, Joseph S Baker
: Displaced, intra-articular fractures of the calcaneus result in gross deformity of the hindfoot, which must be reduced during surgical fixation. Described techniques aimed at restoring the normal anatomy of the calcaneus have mostly been focused on percutaneous methods, which are not without complication. Described in this report is a method of anatomic reduction during open reduction and internal fixation of these injuries, which uses a lamina spreader to simultaneously reduce calcaneal varus, restore calcaneal height, reduce the subtalar joint, and restore normal calcaneal width...
November 30, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27901060/body-composition-and-bone-mineral-status-in-patients-with-turner-syndrome
#3
Kun Shi, Li Liu, Yao-Juan He, Duan Li, Lian-Xiong Yuan, Gendie E Lash, Li Li
Turner syndrome (TS) is associated with decreased bone mineral density and increased fracture rate. However, the developmental trajectory of bone density or body composition in patients with TS is still unclear. The present study tested the hypothesis that different karyotypes and/or age contributes to abnormal body composition and decreased bone mineral status parameters in patients with TS. This study included 24 girls with TS, in which 13 girls exhibited X0 karyotype and 11 had mosaicism. Quantitative ultrasound (QUS) assessed the bone mineral status of the calcaneus, including bone mineral density (BMD), amplitude-dependent speed of sound (AD-SOS), broadband ultrasound attenuation (BUA) and InBody 770 assessed body composition...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900541/tendon-transfer-to-unossified-bone-in-a-porcine-model-potential-implications-for-early-tibialis-anterior-tendon-transfers-in-children-with-clubfeet
#4
Matthew A Halanski, Sam Abrams, Rachel Lenhart, Ellen Leiferman, Teresa Kaiser, Emily Pierce, Rachel Rebekah Franklin, Dayton Opel, Kenneth J Noonan, Thomas D Crenshaw
PURPOSE: Tibialis anterior tendon transfers (TATT) are commonly performed in young children following Ponseti casting for clubfeet. The classic TATT involves advancing the tendon through a hole drilled in the ossified cuneiform. The aim of this study was to determine if tendons transferred through unossified bones have untoward effects on subsequent bone development. METHOD: Twenty-five piglets underwent one of five surgical procedures. An 18-gauge needle was then used to place a tunnel through the bony or cartilaginous portion of the calcaneus (through direct visualization) and isolated slips of the flexor digitorum superficialis (FDS) were placed through the tunnels, as determined by surgical procedure...
November 30, 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27898374/the-effect-of-intracortical-bone-pin-application-on-kinetics-and-tibiocalcaneal-kinematics-of-walking-gait
#5
Christian Maiwald, Anton Arndt, Chris Nester, Richard Jones, Arne Lundberg, Peter Wolf
Bone anchored markers using intracortical bone pins are one of the few available methods for analyzing skeletal motion during human gait in-vivo without errors induced by soft tissue artifacts. However, bone anchored markers require local anesthesia and may alter the motor control and motor output during gait. The purpose of this study was to examine the effect of local anesthesia and the use of bone anchored markers on typical gait analysis variables. Five subjects were analyzed in two different gait analysis sessions...
November 4, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27895200/demographics-mechanisms-of-injury-and-concurrent-injuries-associated-with-calcaneus-fractures-a-study-of-14-516-patients-in-the-american-college-of-surgeons-national-trauma-data-bank
#6
Daniel D Bohl, Nathaniel T Ondeck, Andre M Samuel, Pablo J Diaz-Collado, Stephen J Nelson, Bryce A Basques, Michael P Leslie, Jonathan N Grauer
: Background This study uses the American College of Surgeons National Trauma Data Bank (NTDB) to update the field on the demographics, injury mechanisms, and concurrent injuries among a national sample of patients admitted to the hospital department with calcaneus fractures. Methods Patients with calcaneus fractures in the NTDB during 2011-2012 were identified and assessed. Results A total of 14 516 patients with calcaneus fractures were included. The most common comorbidity was hypertension (18%), and more than 90% of fractures occurred via traffic accident (49%) or fall (43%)...
November 28, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27888853/mr-imaging-findings-in-heel-pain
#7
REVIEW
Ching-Di Chang, Jim S Wu
Heel pain is common and due to a variety of osseous and soft tissue disorders. Causes of heel pain can be classified by the anatomic structure in which they arise and include disorders of the (1) Achilles tendon, (2) plantar fascia, (3) calcaneus, (4) bursae, (5) nerves in the hindfoot, (6) and heel pad. Although careful history taking and physical examination are important, imaging plays a vital role in the diagnosis and management of heel pain. MR imaging is the best imaging test to assess pain in the heel...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27886687/current-controversies-in-management-of-calcaneus-fractures
#8
REVIEW
Heather E Gotha, Jacob R Zide
Displaced intraarticular fractures of the calcaneus represent a technically challenging injury. Although there is conflicting evidence regarding advantages and disadvantages of operative versus nonoperative treatment, a growing body of literature suggests operative management with near-anatomic reduction of the posterior facet and restoration of overall calcaneal morphology offers greater potential for superior short- and long-term outcomes. A thorough understanding of calcaneal anatomy, fracture pattern, and associated injuries, along with careful selection of surgical approach and timing to surgery are critical to minimize the risk of complication and maximize potential for optimal outcomes...
January 2017: Orthopedic Clinics of North America
https://www.readbyqxmd.com/read/27881832/hematogenous-calcaneal-osteomyelitis-in-children-a-systematic-review-of-the-literature
#9
REVIEW
Megan L Mooney, Kirk Haidet, Jiayong Liu, Nabil A Ebraheim
: Osteomyelitis in children commonly affects long bones such as the femur, tibia, and humerus. There have been relatively few documented studies of osteomyelitis at unusual locations, such as the calcaneus. The objective of this study is to systematically review information on the diagnostic and treatment methods of calcaneal osteomyelitis as well as associated complications. Methods included research database searches using primarily PubMed and EMBASE databases. Results of the review show no clear approach to diagnosis and treatment of calcaneal osteomyelitis in children...
November 23, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27881831/the-effect-of-suture-anchor-insertion-angle-on-calcaneus-pullout-strength-challenging-the-deadman-s-angle
#10
William M Weiss, Ramon P Saucedo, John D Robinson, Chung-Chieh Jason Lo, Randal P Morris, Vinod K Panchbhavi
: Background Refractory cases of Achilles tendinopathy amenable to surgery may include reattachment of the tendon using suture anchors. However, there is paucity of information describing the optimal insertion angle to maximize the tendon footprint and anchor stability in the calcaneus. The purpose of this investigation is to compare the fixation strength of suture anchors inserted at 90° and 45° (the Deadman's angle) relative to the primary compressive trabeculae of the calcaneus. Methods A total of 12 matched pairs of adult cadaveric calcanei were excised and potted to approximate their alignment in vivo...
November 23, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27871100/biomechanical-response-of-military-booted-and-unbooted-foot-ankle-tibia-from-vertical-loading
#11
Frank A Pintar, Michael B Schlick, Narayan Yoganandan, Liming Voo, Andrew C Merkle, Michael Kleinberger
A new anthropomorphic test device (ATD) is being developed by the US Army to be responsive to vertical loading during a vehicle underbody blast event. To obtain design parameters for the new ATD, a series of non-injurious tests were conducted to derive biofidelity response corridors for the foot-ankle complex under vertical loading. Isolated post mortem human surrogate (PMHS) lower leg specimens were tested with and without military boot and in different initial foot-ankle positions. Instrumentation included a six-axis load cell at the proximal end, three-axis accelerometers at proximal and distal tibia, and calcaneus, and strain gages...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27866014/3d-multi-segment-foot-kinematics-in-children-a-developmental-study-in-typically-developing-boys
#12
Kevin Deschamps, Filip Staes, Kathelijne Peerlinck, Christel Van Geet, Cedric Hermans, Giovanni Arnoldo Matricali, Sebastien Lobet
BACKGROUND: The relationship between age and 3D rotations objectivized with multisegment foot models has not been quantified until now. The purpose of this study was therefore to investigate the relationship between age and multi-segment foot kinematics in a cross-sectional database. METHODS: Barefoot multi-segment foot kinematics of thirty two typically developing boys, aged 6-20 years, were captured with the Rizzoli Multi-segment Foot Model. One-dimensional statistical parametric mapping linear regression was used to examine the relationship between age and 3D inter-segment rotations of the dominant leg during the full gait cycle...
November 11, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27864559/effect-of-calcaneus-fracture-gap-without-step-off-on-stress-distribution-across-the-subtalar-joint
#13
Brett Barrick, Donald A Joyce, Frederick W Werner, Maria Iannolo
BACKGROUND: Subtalar arthritis is a common consequence following calcaneal fracture, and its development is related to the severity of the fracture. Previous calcaneal fracture models have demonstrated altered contact characteristics when a step-off is created in the posterior facet articular surface. Changes in posterior facet contact characteristics have not been previously characterized for calcaneal fracture gap without step-off. METHODS: The contact characteristics (peak pressure, area of contact, and centroid of pressure) of the posterior facet of the subtalar joint were determined in 6 cadaveric specimens...
November 18, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27856802/optimization-of-hindfoot-alignment-radiography
#14
Chonglin Yang, Xiangyang Xu, Mu Hu, Bibo Wang, Yuan Zhu, Jinhao Liu
BACKGROUND: Cobey and Buck described methods to evaluate hindfoot alignment, but it is still unclear which method is better and easier to perform in clinical practice. PURPOSE: To evaluate the optimal method for radiography of hindfoot alignment. MATERIAL AND METHODS: We randomly selected 50 patients visiting the foot and ankle surgery outpatient department who underwent hindfoot alignment radiography between 1 July and 31 August 2015. Radiographs were taken using both Cobey's and Buck's methods...
November 17, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27856067/posterior-cruciate-ligament-retention-or-substitution-during-total-knee-arthroplasty-does-not-affect-long-term-bone-mineral-density-or-quality
#15
Yoshinori Ishii, Hideo Noguchi, Junko Sato, Koji Todoroki, Shin-Ichi Toyabe
BACKGROUND: Physical activity is recognized as one of the factors that influence bone mineral density (BMD) and bone quality after total knee arthroplasty (TKA). According to biomechanical analyses after posterior cruciate ligament (PCL) retaining (PCLR) and substituting (PCLS) TKA, each implant design has different kinematics and kinetics. The purposes of this study were: (1) to perform within-patient comparisons of the midterm and long-term effects of PCL retention in mobile-bearing TKA on proximal femur and tibia BMD and calcaneus bone quality measured using ultrasound and (2) to identify correlations between them...
October 26, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27852648/percutaneous-reduction-and-screw-fixation-of-displaced-intra-articular-fractures-of-the-calcaneus
#16
Saran Tantavisut, Phinit Phisitkul, Brian O Westerlind, Yubo Gao, Matthew D Karam, John L Marsh
BACKGROUND: Extensile open approaches to reduce and fix intra-articular calcaneal fractures are associated with high levels of wound complications. To avoid these complications, a technique of percutaneous reduction and fixation with screws alone was developed. This study assessed the clinical outcomes, radiographs, and postoperative CT scans after operative treatment with this technique. METHODS: 153 consecutive patients with 182 intra-articular calcaneal fractures were reviewed...
November 15, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27843662/neck-of-femur-fracture-in-a-patient-with-a-chronic-osteomyelitis-of-the-ipsilateral-foot
#17
Anne-Carolin Döring, Anne J H Vochteloo, Kees van Doorn, Rianne M H A Huis In 't Veld, Anil Peters
This case report describes a successful two-stage treatment in a 75-year-old male with a displaced neck of femur fracture, also suffering from an active chronic osteomyelitis of the ipsilateral calcaneus. In our case, a below-knee amputation was performed first, followed by total hip arthroplasty two weeks later. At 15-month follow-up, full recovery of the prefracture level of activities of daily living without significant impairment was obtained. Only a few cases of total hip arthroplasty in amputees have been published, but the indication for surgery was mainly traumatic or advanced osteoarthritis...
2016: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/27815335/removal-of-osteoid-osteoma-of-the-calcaneus-using-subtalar-arthroscopy
#18
Andrija Jurina, Damjan Dimnjaković, Tomislav Smoljanović, Ivan Bojanić
: Intra-articular calcaneal osteoid osteoma is a very rare condition and the diagnosis as well as the treatment is extremely challenging. We report a case of a 19-year-old male with intra-articular osteoid osteoma of the calcaneus, initially treated for peroneal tenosynovitis with unsatisfactory results. Thorough diagnostic procedure revealed the superolateral location of a calcaneal osteoid osteoma, near the sinus tarsi. A cherry-red elevated lesion typical of an osteoid osteoma nidus was completely removed arthroscopically using the anterolateral portal and the middle portal for subtalar arthroscopy...
November 4, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27810033/fracture-of-the-os-trigonum-a-report-of-two-cases-and-review-of-the-literature
#19
Yet Yen Yan, Kinjal Vidyut Mehta, Tien Jin Tan
We report two cases of acute fractures of the os trigonum. The os trigonum fracture related to the first case was sustained following a hyper-plantar flexion injury during a game of soccer. The second case involved a patient who fell from height and also sustained open fractures of the left distal tibia and lateral malleolus as well as the right calcaneus. In both cases, a preliminary diagnosis of a posterior talar process fracture was made from the initial radiographs of the ankle. The correct diagnosis of an os trigonum fracture rather than a fracture of the posterior talar process was only made following further assessment with CT imaging...
December 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27809555/quantitative-analysis-of-subtalar-joint-motion-with-4d-ct-proof-of-concept-with-cadaveric-and-healthy-subject-evaluation
#20
Pedro Augusto Gondim Teixeira, Anne-Sophie Formery, Adrien Jacquot, Guillaume Lux, Isabelle Loiret, Manuela Perez, Alain Blum
OBJECTIVE: The purpose of this study was to show the application of quantitative 4D CT for subtalar joint evaluation in healthy volunteers and cadavers. MATERIALS AND METHODS: Fifteen healthy volunteers with no history of subtalar joint trauma and three cadavers were prospectively evaluated with dynamic CT. The subtalar joint was evaluated during a pronosupination cycle. All acquisitions (cadavers and healthy volunteers) were performed using intermittent sequential mode with a 320-MDCT scanner...
November 3, 2016: AJR. American Journal of Roentgenology
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