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[PMID]:29384947
[Au] Autor:Park EH; Lee KB
[Ad] Endereço:Department of Radiology.
[Ti] Título:Usefulness of black boundary artifact on opposed-phase imaging from turbo spin-echo two-point mDixon MRI for delineation of an arthroscopically confirmed small fracture of the lateral talar dome: A case report.
[So] Source:Medicine (Baltimore);96(52):e9497, 2017 Dec.
[Is] ISSN:1536-5964
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:RATIONALE: A nondisplaced chip fracture can be missed on MRI. Opposed-phase imaging from mDixon MRI produces an interesting artifact called black boundary artifact. This artifact can provide better contrast at the fracture line resulting in better depiction of a small chip fracture on MRI. PATIENT CONCERNS: We present a case of small nondisplaced chip fracture at the lateral talar dome that was well delineated only with the aid of a black boundary artifact after using T2-weighted opposed-phase imaging from turbo spin-echo two-point modified Dixon ankle MRI. In other sequences, the lesion demonstrated a focal full thickness cartilage defect, subtle cortical irregularity, or subcortical bone marrow edema but the full delineation of the fracture line was not possible. DIAGNOSES: Opposed-phase imaging from mDixon MRI aided in the diagnosis of lateral talar dome osteochondral fracture (osteochondral lesion), which was confirmed arthroscopically. INTERVENTIONS: The osteochondral fragment was removed by arthroscopy. OUTCOMES: The patient did well with recovery of full range of motion after 2 months. LESSONS: We have identified a black boundary artifact using opposed-phase imaging from mDixon MRI that can aid in detection of small fracture, which can be missed by conventional MRI, by providing a dark linear signal at the fracture line.
[Mh] Termos MeSH primário: Fraturas Ósseas/diagnóstico por imagem
Interpretação de Imagem Assistida por Computador/métodos
Imagem por Ressonância Magnética/métodos
Tálus/diagnóstico por imagem
Tálus/lesões
[Mh] Termos MeSH secundário: Artroscopia/métodos
Fraturas Ósseas/cirurgia
Seres Humanos
Masculino
Meia-Idade
Amplitude de Movimento Articular
Tálus/cirurgia
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:180201
[St] Status:MEDLINE
[do] DOI:10.1097/MD.0000000000009497


  2 / 3567 MEDLINE  
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[PMID]:29241447
[Au] Autor:Kwak JM; Heo SK; Jung GH
[Ad] Endereço:Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan, Seoul, Republic of Korea.
[Ti] Título:Six-year survival of reimplanted talus after isolated total talar extrusion: a case report.
[So] Source:J Med Case Rep;11(1):348, 2017 Dec 15.
[Is] ISSN:1752-1947
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Open total extrusion of the talus without concomitant fracture is an extremely rare injury. We present 6-year follow-up data of a patient treated using a temporary spanning external fixator and less invasive single K-wire fixation. CASE PRESENTATION: A 55-year-old Asian man who had a totally extruded talus without fracture underwent immediate reimplantation surgery. A spanning external fixator with single antegrade K-wire fixation was applied to maintain the reimplanted talus. During 6 years of follow-up, he could walk without aids and could squat, corresponding to an American Orthopaedic Foot and Ankle Society score of 85. We found that the suspect lesion that was evident at 6 months after surgery had disappeared at 12 months postoperatively on the basis of sequential follow-up magnetic resonance imaging. There was no evidence of osteonecrosis of the dislocated talus at the final follow-up. CONCLUSIONS: In patients with a totally extruded talus, a surgical strategy including immediate reimplantation of the talus and a temporary spanning fixator with single K-wire fixation might be useful to allow early mobilization around the ankle joint and to prevent additional damage of the foot without significant complications.
[Mh] Termos MeSH primário: Traumatismos do Tornozelo/cirurgia
Reimplante/métodos
Tálus/cirurgia
[Mh] Termos MeSH secundário: Traumatismos do Tornozelo/diagnóstico por imagem
Fios Ortopédicos
Fixadores Externos
Seguimentos
Seres Humanos
Imagem por Ressonância Magnética
Masculino
Meia-Idade
Tálus/diagnóstico por imagem
Tálus/lesões
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180130
[Lr] Data última revisão:
180130
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171216
[St] Status:MEDLINE
[do] DOI:10.1186/s13256-017-1517-7


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[PMID]:28458187
[Au] Autor:Riedl M; Glisson RR; Matsumoto T; Hofstaetter SG; Easley ME
[Ad] Endereço:Wilhelminen Hospital, Department of Trauma Surgery, Montleartstraße 37, 1160 Wien, Austria. Electronic address: markus.riedl@wienkav.at.
[Ti] Título:Torsional stiffness after subtalar arthrodesis using second generation headless compression screws: Biomechanical comparison of 2-screw and 3-screw fixation.
[So] Source:Clin Biomech (Bristol, Avon);45:32-37, 2017 Jun.
[Is] ISSN:1879-1271
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Subtalar joint arthrodesis is a common operative treatment for symptomatic subtalar arthrosis. Because excessive relative motion between the talus and calcaneus can delay or prohibit fusion, fixation should be optimized, particularly in patients at risk for subtalar arthrodesis nonunion. Tapered, fully-threaded, variable pitch screws are gaining popularity for this application, but the mechanical properties of joints fixed with these screws have not been characterized completely. We quantified the torsion resistance of 2-screw and 3-screw subtalar joint fixation using this type of screw. METHODS: Ten pairs of cadaveric subtalar joints were prepared for arthrodesis and fixed using Acutrak 2-7.5 screws. One specimen from each pair was fixed with two diverging posterior screws, and the contralateral joint was fixed using two posterior screws and a third screw directed through the anterior calcaneus into the talar neck. Internal and external torsional loads were applied and joint rotation and torsional stiffness were measured at two torque levels. FINDINGS: Internal rotation was significantly less in specimens fixed with three screws. No difference was detectable between 2-screw and 3-screw fixation in external rotation or torsional stiffness in either rotation direction. Both 2-screw and 3-screw fixation exhibited torsion resistance surpassing that reported previously for subtalar joints fixed with two diverging conventional lag screws. INTERPRETATION: Performance of the tapered, fully threaded, variable pitch screws exceeded that of conventional lag screws regardless of whether two or three screws were used. Additional resistance to internal rotation afforded by a third screw placed anteriorly may offer some advantage in patients at risk for nonunion.
[Mh] Termos MeSH primário: Artrodese
Parafusos Ósseos
Articulação Talocalcânea
[Mh] Termos MeSH secundário: Adulto
Idoso
Fenômenos Biomecânicos
Cadáver
Calcâneo/cirurgia
Desenho de Equipamento
Feminino
Seres Humanos
Masculino
Meia-Idade
Rotação
Tálus
Torque
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180118
[Lr] Data última revisão:
180118
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


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[PMID]:28926638
[Au] Autor:Danowitz M; Barry JC; Solounias N
[Ad] Endereço:Department of Anatomy, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, United States of America.
[Ti] Título:The earliest ossicone and post-cranial record of Giraffa.
[So] Source:PLoS One;12(9):e0185139, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The oldest Giraffa material presently known consists of dental specimens. The oldest post-cranial Giraffa material belongs to the Plio-Pleistocene taxon Giraffa sivalensis, where the holotype is a third cervical vertebra. We describe three non-dental specimens from the Early Late Miocene of the Potwar Plateau, including an 8.1 million year old ossicone, 9.4 million year old astragalus, and 8.9 million year old metatarsal and refer them to Giraffa. The described ossicone exhibits remarkable similarities with the ossicones of a juvenile modern giraffe, including the distribution of secondary bone growth, posterior curvature, and concave pitted undersurface where the ossicone would attach to the skull. The astragalus has a notably flat grove of the trochlea, medial twisting between the trochlea and the head, and a square-shaped sustentacular facet, all of which characterize the astragalus of Giraffa camelopardalis. The newly described astragalus is narrow and rectangular, unlike the boxy shaped bone of the modern giraffe. The metatarsal is large in size and has a shallow central trough created by thin medial and lateral ridges, a feature unique to Giraffa and Sivatherium. Our described material introduce the earliest non-dental material of Giraffa, a genus whose extinct representation is otherwise dominated by teeth, and demonstrate that the genus has been morphologically consistent over 9 million years.
[Mh] Termos MeSH primário: Girafas/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Fósseis/história
História Antiga
Masculino
Crânio/anatomia & histologia
Tálus/anatomia & histologia
[Pt] Tipo de publicação:HISTORICAL ARTICLE; JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170920
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185139


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[PMID]:28758444
[Au] Autor:Lee SH
[Ti] Título:Response to "Letter Regarding: Anterior Heterotopic Ossification at the Talar Neck After Total Ankle Arthroplasty".
[So] Source:Foot Ankle Int;38(8):933, 2017 08.
[Is] ISSN:1944-7876
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Tornozelo
Artroplastia de Substituição do Tornozelo
[Mh] Termos MeSH secundário: Seres Humanos
Ossificação Heterotópica
Tálus
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170912
[Lr] Data última revisão:
170912
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170801
[St] Status:MEDLINE
[do] DOI:10.1177/1071100717712987


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[PMID]:28758443
[Au] Autor:Del Vecchio JJ; Uzair AE; Ghioldi ME
[Ti] Título:Letter Regarding: Anterior Heterotopic Ossification at the Talar Neck After Total Ankle Arthroplasty.
[So] Source:Foot Ankle Int;38(8):930-932, 2017 08.
[Is] ISSN:1944-7876
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Tornozelo
Artroplastia de Substituição do Tornozelo
[Mh] Termos MeSH secundário: Seres Humanos
Ossificação Heterotópica
Tálus
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170912
[Lr] Data última revisão:
170912
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170801
[St] Status:MEDLINE
[do] DOI:10.1177/1071100717712986


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[PMID]:28714535
[Au] Autor:Rosas A; Ferrando A; Bastir M; García-Tabernero A; Estalrrich A; Huguet R; García-Martínez D; Pastor JF; de la Rasilla M
[Ad] Endereço:Group of Paleoanthropology MNCN-CSIC, Department of Paleobiology, Museo Nacional de Ciencias Naturales-CSIC, Madrid, 28006, Spain.
[Ti] Título:Neandertal talus bones from El Sidrón site (Asturias, Spain): A 3D geometric morphometrics analysis.
[So] Source:Am J Phys Anthropol;164(2):394-415, 2017 Oct.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: The El Sidrón tali sample is assessed in an evolutionary framework. We aim to explore the relationship between Neandertal talus morphology and body size/shape. We test the hypothesis 1: talar Neandertal traits are influenced by body size, and the hypothesis 2: shape variables independent of body size correspond to inherited primitive features. MATERIALS AND METHODS: We quantify 35 landmarks through 3D geometric morphometrics techniques to describe H. neanderthalensis-H. sapiens shape variation, by Mean Shape Comparisons, Principal Component, Phenetic Clusters, Minimum spanning tree analyses and partial least square and regression of talus shape on body variables. Shape variation correlated to body size is compared to Neandertals-Modern Humans (MH) evolutionary shape variation. The Neandertal sample is compared to early hominins. RESULTS: Neandertal talus presents trochlear hypertrophy, a larger equality of trochlear rims, a shorter neck, a more expanded head, curvature and an anterior location of the medial malleolar facet, an expanded and projected lateral malleolar facet and laterally expanded posterior calcaneal facet compared to MH. DISCUSSION: The Neandertal talocrural joint morphology is influenced by body size. The other Neandertal talus traits do not co-vary with it or not follow the same co-variation pattern as MH. Besides, the trochlear hypertrophy, the trochlear rims equality and the short neck could be inherited primitive features; the medial malleolar facet morphology could be an inherited primitive feature or a secondarily primitive trait; and the calcaneal posterior facet would be an autapomorphic feature of the Neandertal lineage.
[Mh] Termos MeSH primário: Antropometria/métodos
Imagem Tridimensional/métodos
Homem de Neandertal/anatomia & histologia
Tálus/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Antropologia Física
Tamanho Corporal
Feminino
Fósseis
Seres Humanos
Masculino
Análise de Componente Principal
Espanha
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171002
[Lr] Data última revisão:
171002
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170718
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23280


  8 / 3567 MEDLINE  
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[PMID]:28705062
[Au] Autor:Lee RKL; Griffith JF; Law EKC; Ng AWH; Yeung DKW
[Ad] Endereço:1 Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Rm 2A061, 2/F, New Extension Block, Prince of Wales Hospital, 30-32 Ngan Shing St, Shatin, New Territories, Hong Kong, SAR.
[Ti] Título:Ankle Traction During MRI of Talar Dome Osteochondral Lesions.
[So] Source:AJR Am J Roentgenol;209(4):874-882, 2017 Oct.
[Is] ISSN:1546-3141
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: The objective of our study was to assess the impact of axial traction during MRI of talar dome osteochondral lesions using a small-FOV coil. SUBJECTS AND METHODS: A prospective study of 33 patients undergoing high-resolution MRI of the ankle using a microscopy coil with and without axial traction was performed. Two radiologists independently measured the tibiotalar joint space width and semiquantitatively graded intraarticular joint fluid dispersion, cartilage surface visibility of the osteochondral lesion, and cartilage surface visibility elsewhere in the tibiotalar joint before and after traction. Patients were instructed to report any discomfort during ankle traction. RESULTS: None of the patients reported discomfort or other symptoms during ankle traction. The tibiotalar joint space significantly increased (increase in cartilage-cartilage distance, 0.5-0.7 mm; all, p < 0.05) after traction compared with before traction. The degree of intraarticular joint fluid dispersion and the cartilage surface visibility at the osteochondral lesion and elsewhere in the tibiotalar joint improved after traction (all, p < 0.05). CONCLUSION: Traction MRI of the ankle is safe and technically feasible. This study is the first to date to investigate the effect of ankle traction on the MRI assessment of talar dome osteochondral lesions. Traction improves cartilage surface visibility of talar dome osteochondral lesions.
[Mh] Termos MeSH primário: Articulação do Tornozelo
Cartilagem Articular/diagnóstico por imagem
Cartilagem Articular/lesões
Imagem por Ressonância Magnética
Tálus/diagnóstico por imagem
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Feminino
Seres Humanos
Masculino
Meia-Idade
Estudos Prospectivos
Tração/instrumentação
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171006
[Lr] Data última revisão:
171006
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170715
[St] Status:MEDLINE
[do] DOI:10.2214/AJR.17.17873


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[PMID]:28617792
[Au] Autor:Barai A; Scorgie R; Lambie B
[Ad] Endereço:Emergency Department, Dunedin Hospital, Dunedin.
[Ti] Título:Simultaneous bilateral snowboarder's fractures in a young woman: a rare entity.
[So] Source:N Z Med J;130(1457):79-83, 2017 Jun 16.
[Is] ISSN:1175-8716
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Talus is a well-supported bone in the foot. A fracture of talus requires a high-impact injury. A wedge-shaped inferolateral component is the lateral process of the talus (LPT). A fracture of LPT is also known as a 'snowboarder's fracture'. Simultaneous bilateral snowboarder's fracture is rarely reported in English literature. CASE: We present here a case of simultaneous bilateral snowboarder's fractures in a slow-moving motor vehicle accident in the icy conditions. The injuries were unique because the snowboarder's fractures were accompanied by fractures of the inferior aspect of talus bilaterally and a fracture of the anterior process of the calcaneus in the right foot. To our knowledge, no such case has been reported in the past. Our patient underwent successful open reduction and internal fixation with plate and screws. CONCLUSION: Snowboarder's fractures are frequently missed by the clinicians, which causes significant morbidity of the patients. Adequate knowledge and awareness among the physicians about this type of injury may improve the patient care.
[Mh] Termos MeSH primário: Acidentes de Trânsito
Fraturas Ósseas/diagnóstico por imagem
Fraturas Ósseas/cirurgia
Tálus/lesões
[Mh] Termos MeSH secundário: Adolescente
Tornozelo/diagnóstico por imagem
Feminino
Fixação Interna de Fraturas
Fraturas Ósseas/etiologia
Seres Humanos
Tálus/cirurgia
Tomografia Computadorizada por Raios X
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170720
[Lr] Data última revisão:
170720
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170616
[St] Status:MEDLINE


  10 / 3567 MEDLINE  
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[PMID]:28587685
[Au] Autor:Hayhoe RPG; Lentjes MAH; Mulligan AA; Luben RN; Khaw KT; Welch AA
[Ad] Endereço:1Department of Population Health and Primary Care,Norwich Medical School, Faculty of Medicine and Health Sciences,University of East Anglia,Norwich NR4 7TJ,UK.
[Ti] Título:Carotenoid dietary intakes and plasma concentrations are associated with heel bone ultrasound attenuation and osteoporotic fracture risk in the European Prospective Investigation into Cancer and Nutrition (EPIC)-Norfolk cohort.
[So] Source:Br J Nutr;117(10):1439-1453, 2017 May.
[Is] ISSN:1475-2662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Carotenoids are found in abundance in fruit and vegetables, and may be involved in the positive association of these foods with bone health. This study aimed to explore the associations of dietary carotenoid intakes and plasma concentrations with bone density status and osteoporotic fracture risk in a European population. Cross-sectional analyses (n 14 803) of bone density status, using calcaneal broadband ultrasound attenuation (BUA) and longitudinal analyses (n 25 439) of fracture cases were conducted on data from the prospective European Prospective Investigation into Cancer and Nutrition-Norfolk cohort of middle-aged and older men and women. Health and lifestyle questionnaires were completed, and dietary nutrient intakes were derived from 7-d food diaries. Multiple regression demonstrated significant positive trends in BUA for women across quintiles of dietary α-carotene intake (P=0·029), ß-carotene intake (P=0·003), ß-cryptoxanthin intake (P=0·031), combined lutein and zeaxanthin intake (P=0·010) and lycopene intake (P=0·005). No significant trends across plasma carotenoid concentration quintiles were apparent (n 4570). The Prentice-weighted Cox regression showed no trends in fracture risk across dietary carotenoid intake quintiles (mean follow-up time 12·5 years), except for a lower risk for wrist fracture in women with higher lutein and zeaxanthin intake (P=0·022); nevertheless, inter-quintile differences in fracture risk were found for both sexes. Analysis of plasma carotenoid data (mean follow-up time 11·9 years) showed lower hip fracture risk in men across higher plasma α-carotene (P=0·026) and ß-carotene (P=0·027) quintiles. This study provides novel evidence that dietary carotenoid intake is relevant to bone health in men and women, demonstrating that associations with bone density status and fracture risk exist for dietary intake of specific carotenoids and their plasma concentrations.
[Mh] Termos MeSH primário: Carotenoides/administração & dosagem
Dieta
Fraturas Espontâneas/etiologia
Osteoporose/complicações
Tálus/fisiologia
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Densidade Óssea
Estudos de Coortes
Feminino
Seres Humanos
Meia-Idade
Reino Unido
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
36-88-4 (Carotenoids)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170724
[Lr] Data última revisão:
170724
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170608
[St] Status:MEDLINE
[do] DOI:10.1017/S0007114517001180



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