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https://www.readbyqxmd.com/read/29219020/correlation-of-mri-appearance-of-autologous-chondrocyte-implantation-in-the-ankle-with-clinical-outcome
#1
Keith W Chan, Richard D Ferkel, Brian Kern, Sarah S Chan, Gregory R Applegate
The objective of this study was to characterize magnetic resonance imaging (MRI) findings and correlate with clinical results in patients who underwent autologous chondrocyte implantation (ACI) of osteochondral lesions of the talus (OLT). METHODS: Twenty-four grafts were evaluated at a mean 65.8 months after ACI for OLT. MRI was performed on a 1.5-T GE scanner using multiple sequences. Graft appearance was compared with preoperative MRI and evaluated for 6 criteria: defect fill, surface regularity, signal pattern, bone marrow edema, subchondral plate irregularity, and presence of cystic lesions...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29203003/long-term-follow-up-and-development-of-foot-complaints-in-a-surgically-treated-mirror-foot-a-case-report-and-review-of-literature
#2
S A Lalé, E B Burger, J H J M Bessems, V Pollet, C A van Nieuwenhoven
BACKGROUND: Mirror foot is a rare anomaly and limited long term follow-up information is available. METHODS: Seven years after operation a mirror foot patient returned with foot complaints and was evaluated using radiographs and clinical examination. A systematic literature search was conducted to study foot complaints in mirror feet. RESULTS: Different origins of foot pain were considered in our patient; tibia length difference, deformed talus and accessory osseous structures in the tarsal region...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29202998/a-rare-cause-of-lateral-ankle-pain-a-symptomatic-talus-secundarius
#3
Ruben Zwiers, Peter A J de Leeuw, Gino M M J Kerkhoffs, C Niek van Dijk
The talus secundarius is one of the rarest accessory tarsal bones, being present in 0.01% of all ankles. It is located at the lateral side of the talus, distally to the tip of the fibula. Hitherto, only five cases of a symptomatic talus secundarius have been described in literature. We presented a case of bilateral symptomatic talus secundarius in a young gymnast. There was a difference in size of the two accessory bones. The large talus secundarius in the left ankle was fixated, in the right ankle the fragment was excised...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29202992/beneficial-clinical-effects-but-limited-tissue-quality-following-osteochondral-repair-with-a-cell-free-multilayered-nano-composite-scaffold-in-the-talus
#4
Martin Kaipel, Markus Schreiner, Richard Kellner, Joachim Klikovits, Sebastian Apprich, Martin Brix, Harald Boszotta, Stephan Domayer, Siegfried Trattnig
BACKGROUND: The treatment of larger osteochondral lesions of the talus remains an operative challenge. In addition to micro fracturing and osteochondral transplantation one promising strategy could be the operative repair with a cell-free multilayered nano-composite scaffold with the potential to regenerate bone and cartilage in one treatment. METHODS: In this prospective case series four consecutive patients who suffered from a single osteochondral lesion (≥1...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29202991/osteochondral-lesions-of-the-talus-treatment-with-fresh-frozen-allograft
#5
Juan Manuel Yañez Arauz, Jorge Javier Del Vecchio, Facundo Bilbao, Nicolas Raimondi
INTRODUCTION: Symptomatic talar osteochondral lesions are about 50% refractory to conservative treatment requiring a surgical solution. In the case of large chronic lesions, the use of bone graft taken from tissue bank is an alternative that enables to fill the defect without causing donor site morbidity. MATERIAL AND METHODS: Eight patients treated with talar osteochondral allograft in lesions greater than 20mm in diameter were analyzed - 4 males and 4 females aging 39...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29202990/biological-reconstruction-of-large-osteochondral-lesions-of-the-talar-dome-with-a-modified-sandwich-technique-midterm-results
#6
Boguslaw Sadlik, Lukasz Kolodziej, Adrian Blasiak, Mateusz Szymczak, Bartłomiej Warchal
BACKGROUND: Surgical treatment for large osteochondral lesions of the talar dome (OLTD) must restore the convexity and curvature of the talus. Here, we present midterm results and describe the modified "sandwich" reconstruction procedure. Bone defects were restored using a biological inlay consists of autologous bone chips that were mixed with bone marrow concentrate and fibrin glue and covered with a xenogeneic collagen membrane infiltrated with bone marrow concentrate and stabilized by fibrin glue...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29198359/editorial-commentary-osteochondral-lesions-of-the-talus-are-we-going-the-wrong-way
#7
EDITORIAL
Richard D Ferkel
Recalcitrant osteochondral lesions of the talus present a difficult problem to the treating surgeon. Anterior and posterior approaches have been studied to facilitate treatment access. Current research highlights the accessibility of an osteochondral lesion to treatment from an anterior or posterior approach and shows the importance of foot position and noninvasive distraction to facilitate treatment. Moreover, it is important to consider that using both anterior and posterior portals, most osteochondral lesions can be well treated with a patient in the supine position...
December 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29188152/astragalus-tuberculosis-a-case-report-and-review-of-the-literature
#8
Yugal Karkhur, Vivek Tiwari, Jeetendra Lodhi, Anurag Tiwari
Osteo-articular tuberculosis continues to be a major global pandemic, with its greatest impact in the third-world countries. Among osteo-articular tuberculosis, plantar localisation, particularly isolated involvement of the talus is an extremely rare event. We discuss the case of a 20-year-old male diagnosed with isolated tuberculosis of right talus without the radiological involvement of the distal tibia, fibula or calcaneum. The diagnosis was made with the help of magnetic resonance imaging and confirmed through core biopsy of the talus...
September 22, 2017: Curēus
https://www.readbyqxmd.com/read/29183896/paediatric-salter-harris-type-iv-injury-of-distal-tibia-with-talus-fracture
#9
Swapnil Kothadia, Umesh Birole, Ashish Ranade
Fracture of talus with Salter-Harris injury of the distal end of tibia is a rare injury in paediatric age group. The authors report a case of a 13-year-old male child who sustained type IV Salter-Harris injury to the medial malleolus with coronal spilt along with spilt and depressed fracture of the neck of talus and fracture of the lateral process of talus with stable compression fracture of spine sustained due to fall from 6 meters height. CT scan delineated the morphology of fracture pattern and helped in preoperative planning...
November 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29175098/model-based-tracking-of-the-bones-of-the-foot-a-biplane-fluoroscopy-validation-study
#10
Joseph M Iaquinto, Matthew W Kindig, David R Haynor, QuocBao Vu, Nathan Pepin, Richard Tsai, Bruce J Sangeorzan, William R Ledoux
Measuring foot kinematics using optical motion capture is technically challenging due to the depth of the talus, small bone size, and soft tissue artifact. We present a validation of our biplane X-ray system, demonstrating its accuracy in tracking the foot bones directly. Using an experimental linear/rotary stage we imaged pairs of tali, calcanei, and first metatarsals, with embedded beads, through 30 poses. Model- and bead-based algorithms were employed for semi-automatic tracking. Translational and rotational poses were compared to the experimental stage (a reference standard) to determine registration performance...
November 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29171977/ultrasonographic-measurements-of-the-metacarpophalangeal-and-talar-cartilage-thicknesses-a-reliability-study-in-healthy-subjects
#11
Şule Şahin Onat, Ayşe Merve Ata, Simão Serrano, Shaw-Gang Shyu, João Constantino, Süha Yalçın, Cengiz Açıkel, Murat Kara, Levent Özçakar
BACKGROUND: Assessment of the joint cartilage using ultrasound (US) imaging is important. OBJECTIVE: Our aim was to investigate the reliabilities of ultrasonographic measurements for talus dome (TCT) and metacarpal cartilage thicknesses (MCT). METHODS: Twenty healthy volunteers were recruited in the study. Every day, five physiatrists measured eight joint cartilage thicknesses. They repeated all the measurements in five consecutive days. RESULTS: Intra-observer intraclass correlation coefficient (ICC) values were "excellent" for all MCTs, except for the 3rd left MCT on the 1st day, 4th left MCT on the 1st day and 4th right MCT on the 3rd day which were "good"...
November 17, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29158967/bed-site-selection-by-a-subordinate-predator-an-example-with-the-cougar-puma-concolor-in-the-greater-yellowstone-ecosystem
#12
Anna Kusler, L Mark Elbroch, Howard Quigley, Melissa Grigione
As technology has improved, our ability to study cryptic animal behavior has increased. Bed site selection is one such example. Among prey species, bed site selection provides thermoregulatory benefits and mitigates predation risk, and may directly influence survival. We conducted research to test whether a subordinate carnivore also selected beds with similar characteristics in an ecosystem supporting a multi-species guild of competing predators. We employed a model comparison approach in which we tested whether cougar (Puma concolor) bed site attributes supported the thermoregulatory versus the predator avoidance hypotheses, or exhibited characteristics supporting both hypotheses...
2017: PeerJ
https://www.readbyqxmd.com/read/29158644/injury-mechanism-fracture-characteristics-and-clinical-treatment-of-pilon-fracture-with-intact-fibula-a-retrospective-study-of-23-pilon-fractures
#13
Jiang Liangjun, Zheng Qiang, Li Hang, Pan Zhijun
Objective: The effect of intact fibula on pilon fracture is not completely elucidated. We retrospectively analysed pilon fractures with intact fibula at our hospital over a 4 year period to understand the injury mechanism, fracture characteristics, treatment strategy and prognosis of this fracture. Methods: Pilon fracture patients with intact fibula treated in our hospital from January 2010 to December 2014 were observed. OA/ATO fracture type, Ruedi-Allgower classification and fracture characteristics were summarised...
November 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29144772/subchondral-bone-degradation-after-microfracture-for-osteochondral-lesions-of-the-talus-an-mri-analysis
#14
Yoshiharu Shimozono, Max Coale, Youichi Yasui, Amanda O'Halloran, Timothy W Deyer, John G Kennedy
BACKGROUND: Microfracture is the most common cartilage-reparative procedure for the treatment of osteochondral lesions of the talus (OLTs). Damage to the subchondral bone (SCB) during microfracture may irreversibly change the joint-loading support of the ankle, leading to reparative fibrocartilage degradation over time. PURPOSE: To investigate the morphological change in the SCB after microfracture for OLT by developing a novel magnetic resonance imaging (MRI) scoring system specifically for evaluating the SCB...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29134100/three-dimensional-innate-mobility-of-the-human-foot-bones-under-axial-loading-using-biplane-x-ray-fluoroscopy
#15
Kohta Ito, Koh Hosoda, Masahiro Shimizu, Shuhei Ikemoto, Takeo Nagura, Hiroyuki Seki, Masateru Kitashiro, Nobuaki Imanishi, Sadakazu Aiso, Masahiro Jinzaki, Naomichi Ogihara
The anatomical design of the human foot is considered to facilitate generation of bipedal walking. However, how the morphology and structure of the human foot actually contribute to generation of bipedal walking remains unclear. In the present study, we investigated the three-dimensional kinematics of the foot bones under a weight-bearing condition using cadaver specimens, to characterize the innate mobility of the human foot inherently prescribed in its morphology and structure. Five cadaver feet were axially loaded up to 588 N (60 kgf), and radiographic images were captured using a biplane X-ray fluoroscopy system...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29126043/biphasic-bioresorbable-scaffold-trufit-plug-%C3%A2-for-the-treatment-of-osteochondral-lesions-of-talus-6-to-8-year-follow-up
#16
Elvira Di Cave, Pierluigi Versari, Fabio Sciarretta, David Luzon, Lorenzo Marcellini
BACKGROUND: The ideal treatment of osteochondral lesions of the talus (OLT) is debatable. The TruFit plug has been investigated as a potential treatment method for osteochondral defects. This is a biphasic scaffold designed to stimulate cartilage and subchondral bone formation. The purpose of this retrospective study was to investigate the long-term functional and MRI outcomes of the TruFit Plug for the treatment of OLT. METHODS: Twelve consecutive patients treated from March 2007 to April 2009 for OLT were evaluated...
June 3, 2017: Foot
https://www.readbyqxmd.com/read/29126036/bone-cyst-formation-after-ankle-arthroplasty-may-be-caused-by-stress-shielding-a-numerical-simulation-of-the-strain-adaptive-bone-remodelling
#17
Hazibullah Waizy, Bernd-Arno Behrens, Kerstin Radtke, Amer Almohallami, Christina Stukenborg-Colsman, Anas Bouguecha
BACKGROUND: The history of total ankle arthroplasty (TAA) has different evolution steps to improve the outcome. The third generation implants show an overall 8-year survival rate up to 93%. The main reported reason for early failure of TAA is aseptic loosening, cyst formation is also frequently reported. The aim of the present study is to use the finite element (FE) method to analyze the adaptive bone remodeling processes, including cyst formation after TAA. METHODS: Bone characteristics applied to the model corresponded to information obtained from computed tomography...
December 2017: Foot
https://www.readbyqxmd.com/read/29098389/symptomatic-os-talus-secundarius-a-case-report-and-review-of-the-literature
#18
Ozkan Kose, Hasan May, Baver Acar, Melih Unal
Os talus secundarius is an extremely rare accessory ossicle located at the lateral aspect of the talus just anterior to the fibula. Although rarely seen, it may cause lateral-sided chronic ankle pain. Only a few cases of symptomatic os talus secundarius have been reported to date. Herein, a 42-year-old male patient with symptomatic os talus secundarius is presented, and its imaging findings, differential diagnosis, and treatment are discussed. LEVEL OF EVIDENCE: Level IV.
November 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29096954/the-triggering-factors-of-the-m%C3%A3-afellshyrna-debris-slide-in-northern-iceland-intense-precipitation-earthquake-activity-and-thawing-of-mountain-permafrost
#19
Þorsteinn Sæmundsson, Costanza Morino, Jón Kristinn Helgason, Susan J Conway, Halldór G Pétursson
On the 20th September 2012, a large debris slide occurred in the Móafellshyrna Mountain in the Tröllaskagi peninsula, central north Iceland. Our work describes and discusses the relative importance of the three factors that may have contributed to the failure of the slope: intense precipitation, earthquake activity and thawing of ground ice. We use data from weather stations, seismometers, witness reports and field observations to examine these factors. The slide initiated after an unusually warm and dry summer followed by a month of heavy precipitation...
October 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29095403/ankle-mri-and-arthroscopy-correlation-with-cartilaginous-defects-and-symptomatic-os-trigonum
#20
Brian D Powell, Minton T Cooper
Arthroscopic intervention of the foot and ankle is used for a growing number of procedures. Magnetic resonance imaging (MRI) can be a helpful technique while detecting pathology before surgical intervention. A common use of MRI is detecting osteochondral lesion of the talus; however, other pathology can be detected including but not limited to symptomatic Os trigonum and subtalar osteochondral defects. An MRI sensitivity and specificity for detecting these pathologies vary. Correlating findings on MRI with arthroscopy is helpful in determining its accuracy and will be discussed in the following case examples...
December 2017: Sports Medicine and Arthroscopy Review
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