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https://www.readbyqxmd.com/read/28196041/change-in-talar-translation-in-the-coronal-plane-after-mobile-bearing-total-ankle-replacement-and-its-association-with-lower-limb-and-hindfoot-alignment
#1
Young Yi, Jae-Ho Cho, Ji-Beom Kim, Jae-Young Kim, Su-Yeon Park, Woo Chun Lee
BACKGROUND: Mobile-bearing total ankle replacement (TAR) enables motion at the tibial implant-polyethylene insert interface. This motion could lead to coronal translation of the talus relative to the tibia and may affect radiographic outcome. We aimed to assess the translation of the talus before and after mobile-bearing TAR to determine whether translation of the talus after TAR is associated with coronal plane alignment of the lower limb and hindfoot as well as to investigate the complications associated with talar translation...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28188546/osteochondral-lesions-of-the-talus-in-the-athlete-up-to-date-review
#2
REVIEW
Yoshiharu Shimozono, Youichi Yasui, Andrew W Ross, John G Kennedy
PURPOSE OF REVIEW: Osteochondral lesions of the talus (OLT) are common injuries in athletes. The purpose of this study is to comprehensively review the clinical results and return to sport capacity in athletes following treatment for OLT. RECENT FINDINGS: Reparative procedures, such as bone marrow stimulation, and replacement procedures, such as autologous osteochondral transplantation, provide good clinical outcomes in short- and mid-term follow-up in the athlete...
February 10, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28167062/treatment-of-peripheral-talus-fractures
#3
REVIEW
John R Shank, Stephen K Benirschke, Michael P Swords
Peripheral talus fractures include injuries to the lateral process, posteromedial talar body, and talar head. These injuries are rare and are often missed. Nonunion with conservative treatment is high and excision can lead to joint instability, rapid arthrosis, and earlier need for arthrodesis. Open reduction internal fixation of most peripheral talus fractures is critical to achieving a good outcome. Open reduction leads to more rapid union and ability to mobilize the ankle and subtalar joints, quicker revascularization of the talus, and lower rates of arthrosis...
March 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28163787/statistical-shape-models-of-cuboid-navicular-and-talus-bones
#4
Aleksandra U Melinska, Patryk Romaszkiewicz, Justyna Wagel, Bartlomiej Antosik, Marek Sasiadek, D Robert Iskander
BACKGROUND: The aim was to develop statistical shape models of the main human tarsal bones that would result in novel representations of cuboid, navicular and talus. METHODS: Fifteen right and 15 left retrospectively collected computed tomography data sets from male individuals, aged from 17 to 63 years, with no known foot pathology were collected. Data were gathered from 30 different subjects. A process of model building includes image segmentation, unifying feature position, mathematical shape description and obtaining statistical shape geometry...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/28153474/feasibility-of-using-mris-to-create-subject-specific-parallel-mechanism-joint-models
#5
Simao Brito da Luz, Luca Modenese, Nicola Sancisi, Peter M Mills, Ben Kennedy, Belinda R Beck, David G Lloyd
Musculoskeletal models typically use generic 2D models for the tibiofemoral (TFJ) and patellofemoral (PFJ) joints, with a hinge talocrural joint (TCJ), which are scaled to each subject׳s bone dimensions. Alternatively joints' measured kinematics in cadavers are well-predicted using 3D cadaver-specific models. These employ mechanisms constrained by the articulations of geometric objects fitted to the joint׳s surfaces. In this study, we developed TFJ, PFJ and TCJ mechanism-based models off MRIs for fourteen participants and compared the estimated kinematics with those from published studies modified to be consistent with mechanisms models and subject-specific anatomical landmarks...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28151778/undercorrection-of-planovalgus-deformity-after-calcaneal-lengthening-in-patients-with-cerebral-palsy
#6
Byung Chae Cho, In Hyeok Lee, Chin Youb Chung, Ki Hyuk Sung, Kyoung Min Lee, Soon-Sun Kwon, Seung Jun Moon, Jaeyoung Kim, Hyunwoo Lim, Moon Seok Park
: Calcaneal lengthening (CL) is one of the treatment options for planovalgus deformity in patients with cerebral palsy (CP). However, its indication still needs to be clarified according to the functional status of CP. The aim of this study was to investigate the radiographic outcome after CL in patients with CP and to evaluate the risk factors causing undercorrection of planovalgus deformities. We included consecutive patients with CP who underwent CL for planovalgus deformity, were followed for more than 2 years, and had preoperative and postoperative weight-bearing anteroposterior (AP) and lateral foot radiographs...
February 1, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28145956/evaluation-of-first-ray-mobility-in-patients-with-hallux-valgus-using-weight-bearing-ct-and-a-3-d-analysis-system-a-comparison-with-normal-feet
#7
Tadashi Kimura, Makoto Kubota, Tetsuya Taguchi, Naoki Suzuki, Asaki Hattori, Keishi Marumo
BACKGROUND: Some physicians report that patients with hallux valgus have hypermobility at the tarsometatarsal (TMT) joint of the first ray and 3-dimensional (3-D) deformity. With use of non-weight-bearing and weight-bearing computed tomography (CT), we evaluated the 3-D mobility of each joint of the first ray in feet with hallux valgus compared with normal feet. METHODS: Ten feet of 10 patients with hallux valgus and 10 feet of 10 healthy volunteers with no foot disorders were examined...
February 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28144574/current-management-of-talar-osteochondral-lesions
#8
REVIEW
Arianna L Gianakos, Youichi Yasui, Charles P Hannon, John G Kennedy
Osteochondral lesions of the talus (OLT) occur in up to 70% of acute ankle sprains and fractures. OLT have become increasingly recognized with the advancements in cartilage-sensitive diagnostic imaging modalities. Although OLT may be treated nonoperatively, a number of surgical techniques have been described for patients whom surgery is indicated. Traditionally, treatment of symptomatic OLT have included either reparative procedures, such as bone marrow stimulation (BMS), or replacement procedures, such as autologous osteochondral transplantation (AOT)...
January 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28144149/can-achilles-tendon-be-used-as-a-new-distal-landmark-for-coronal-tibial-component-alignment-in-total-knee-replacement-surgery-an-observational-mri-study
#9
Uğur Tiftikçi, Sancar Serbest, Veysel Burulday
BACKGROUND: In total knee arthroplasty, it is better to use more than one reference point for correct alignment of the components. By measuring the distances of Achilles tendon (AT) and other conventional landmarks from the mechanical axis in magnetic resonance imaging (MRI) of the ankle, we aimed to demonstrate that, as a novel landmark which can help for correct alignment in the coronal plane, AT is a better option than other landmarks. MATERIALS AND METHODS: This retrospective study was done on 53 ankle MRIs that met the criteria for inclusion to the study among 158 ankle MRIs...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28134962/common-foot-and-ankle-injuries-what-not-to-miss-and-how-best-to-manage
#10
Jessica Reissig, Adam Bitterman, Simon Lee
Injuries to the foot and ankle are commonly encountered, especially among athletes, and can lead to morbidity if not managed appropriately. Health care professionals must have a firm understanding of injury anatomy, diagnoses, and management. This article provides a review of lateral talus process fractures, os trigonum injuries, Lisfranc injuries, turf toe, navicular stress fractures, and syndesmotic injuries.
February 1, 2017: Journal of the American Osteopathic Association
https://www.readbyqxmd.com/read/28129094/osteochondrosis-synovial-fossae-and-articular-indentations-in-the-talus-and-distal-tibia-of-growing-domestic-pigs-and-wild-boars
#11
P E Etterlin, S Ekman, R Strand, K Olstad, C J Ley
Articular osteochondrosis (OC) often develops in typical locations within joints, and the characterization of OC distribution in the pig tarsus is incomplete. Prevalence of OC is high in domestic pigs but is presumed to be low in wild boars. Postmortem and computed tomography (CT) examinations of the talus and distal tibia from 40 domestic pigs and 39 wild boars were evaluated for the locations and frequencies of OC, synovial fossae, and other articular indentations, and frequency distribution maps were made...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28116276/is-early-weight-bearing-allowed-in-surgically-treated-talar-neck-fractures
#12
P H S Kalmet, S Sanduleanu, Y Y V Horn, M Poeze, P R G Brink
INTRODUCTION: Non-or partial weight bearing is frequently the standard treatment after peri-articular lower extremity fractures. Displaced talar neck fractures are severe injuries compromising vascularity of the corpus and consequently are at risk for non-union and avascular necrosis, the main reason to restrict weight bearing for up to three months according to most literature. CASE PRESENTATION: We report a case of a 31-year old male with a high impact car accident...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28114974/a-misdiagnosed-case-of-osteoid-osteoma-of-the-talus-a-case-report-and-literature-review
#13
Huan He, Hailin Xu, Hao Lu, Yu Dang, Wei Huang, Qing Zhang
BACKGROUND: Osteoid osteoma (OO) is a common benign bone tumour that is rarely found in the talus. Its nidus is difficult to detect on early imaging. The atypical symptoms of OO and the presence of concurrent trauma or sports injuries may lead to misdiagnosis and delayed treatment. We herein analyse a case of misdiagnosis of OO of the talus and discuss how to improve the early diagnosis of this rare lesion, thereby permitting rapid treatment. CASE PRESENTATION: A 23-year-old man with a history of left ankle sprains and chronic pain was diagnosed with another ankle sprain and managed conservatively based on normal X-ray findings...
January 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28114949/individual-headless-compression-screws-fixed-with-three-dimensional-image-processing-technology-improves-fusion-rates-of-isolated-talonavicular-arthrodesis
#14
Mei-Ming Xie, Kang Xia, Hong-Xin Zhang, Hong-Hui Cao, Zhi-Jin Yang, Hai-Feng Cui, Shang Gao, Kang-Lai Tang
BACKGROUND: Screw fixation is a typical technique for isolated talonavicular arthrodesis (TNA), however, no consensus has been reached on how to select most suitable inserted position and direction. The study aimed to present a new fixation technique and to evaluate the clinical outcome of individual headless compression screws (HCSs) applied with three-dimensional (3D) image processing technology to isolated TNA. METHODS: From 2007 to 2014, 69 patients underwent isolated TNA by using double Acutrak HCSs...
January 23, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28112555/incidence-and-association-of-ct-findings-of-ankle-tendon-injuries-in-patients-presenting-with-ankle-and-hindfoot-fractures
#15
Ashkahn Golshani, Liang Zhu, Chunyan Cai, Nicholas M Beckmann
OBJECTIVE: Tendon injuries are a commonly encountered finding in ankle CT examinations performed for fractures. This study was designed to identify the incidence and associations of tendon injuries in ankle CT examinations performed for fractures. MATERIALS AND METHODS: A retrospective review was performed of 410 patients who underwent ankle CT during a 6-year period. RESULTS: Tendon injuries were common, seen in 25% of all ankle CT examinations...
February 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28105122/analysis-of-3-dimensional-finite-element-after-reconstruction-of-impaired-ankle-deltoid-ligament
#16
Yunhan Ji, Xianzhong Tang, Yifan Li, Wei Xu, Wenjun Qiu
We compared four repair techniques for impaired ankle ligament deltoideum, namely Wiltberger, Deland, Kitaoka and Hintermann using a 3-dimensional finite element. We built an ankle ligament deltoideum model, including six pieces of bone structures, gristles and main ligaments around the ankle. After testing the model, we built an impaired ligament deltoideum model plus four reconstruction models. Subsequently, different levels of force on ankles with different flexion were imposed and ankle biomechanics were compared...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28103870/osteochondral-autograft-transplantation-with-biplanar-distal-tibial-osteotomy-for-patients-with-concomitant-large-osteochondral-lesion-of-the-talus-and-varus-ankle-malalignment
#17
Xingchen Li, Yuan Zhu, Yang Xu, Bibo Wang, Jinhao Liu, Xiangyang Xu
BACKGROUND: Osteochondral lesions of the talus (OLTs) are amongst the most common foot and ankle disorders. Varus ankle malalignment causes stress concentration on medial side of the joint, resulting in OLTs and osteoarthritis. For large symptomatic OLTs (>10 mm), Osteochondral autograft transplantation is usually recommended. This article highlights biplanar distal tibial osteotomy as an approach and management for patients with concomitant large OLTs and varus ankle malalignment...
January 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28089359/transient-and-long-time-kinetic-responses-of-the-cadaveric-leg-during-internal-and-external-foot-rotation
#18
Alexander R Mait, Adwait Mane, Jason L Forman, John Paul Donlon, Bingbing Nie, Richard W Kent
The purpose of this study was to determine the long-time and transient characteristics of the moment generated by external (ER) and internal (IR) rotation of the calcaneus with respect to the tibia. Two human cadaver legs were disarticulated at the knee joint while maintaining the connective tissue between the tibia and fibula. An axial rotation of 21° was applied to the proximal tibia to generate either ER or IR while the fibula was unconstrained and the calcaneus was permitted to translate in the transverse plane...
January 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28087394/hawkins-type-ii-talar-fracturewithsubtalar-dislocation%C3%A2-a-veryunusualcombination
#19
Romain Gérard, Nathalie Kerfant, Geoffroy Dubois de Mont Marin, Richard Stern, Mathieu Assal
We report the unusualcase of a 16-year-old young man whosustained a rare association of a Hawkins' type-II talar neck fracture with a completemedialsubtalar dislocation (Hawkins type-IIB) thatoccurred as anisolatedinjuryafter indirect trauma during a soccer game. Followingclosedreduction of the subtalar dislocation, standard radiographs and computedtomography (CT)demonstrated a comminuted fracture of the talus involving the base of the talar neck. Open reductionwasperformed and the fracture wasstabilizedby ORIF...
January 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28087215/surgical-outcome-of-posterior-ankle-impingement-syndrome-with-concomitant-ankle-disorders-treated-simultaneously-in-patient-engaged-in-athletic-activity
#20
Wataru Miyamoto, Shinya Miki, Hirotaka Kawano, Masato Takao
BACKGROUND: It is unclear whether simultaneous surgery for posterior ankle impingement syndrome (PAIS) and concomitant ankle disorders, such as anterior ankle impingement syndrome (AAIS), lateral ankle instability (LAI), and osteochondral lesion of the talus (OLT), allows for early return to athletic activity. METHODS: Ninety-seven patients who engaged in athletic activity (mean age 27 [range 18-43] years) and were treated by a hindfoot endoscopic approach for PAIS alone or simultaneously for PAIS and concomitant ankle disorders were included in this study...
January 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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