Talar Neck Fractures: Single or Double Approach?

2020 ◽  
Vol 25 (4) ◽  
pp. 653-665
Author(s):  
Florencio Pablo Segura ◽  
Santiago Eslava
Keyword(s):  
Double Approach ◽  
Talar Neck Fractures

Magnetic Resonance Imaging to Detect Avascular Necrosis After Open Reduction and Internal Fixation of Talar Neck Fractures

1996 ◽  
Vol 17 (12) ◽  
pp. 742-747 ◽  
Author(s):  
David B. Thordarson ◽  
Mark J. Triffon ◽  
Michael R. Terk
Keyword(s):  
Stainless Steel ◽  
Avascular Necrosis ◽  
The Body ◽  
Type Ii ◽  
Mr Images ◽  
High Quality ◽  
Type D ◽  
Titanium Screws ◽  
Signal Changes ◽  
Talar Neck Fractures

Twenty-one consecutive patients with displaced talar neck fractures (12 Hawkins type II, 9 Hawkins type III) were prospectively evaluated with magnetic resonance (MR) scans performed between 3 days and 12 months after surgery. All patients underwent open reduction and internal fixation with titanium screws, except two who underwent fixation with stainless steel implants that were subsequently removed. All patients had plain radiographs. We classified the scans as follows: type A, no abnormal signal changes in the body of the talus; type B, signal changes in less than 25% of the body; type C, signal changes in 25% to 50% of the body; and type D, signal changes in greater than 50% of the body. Plain anteroposterior radiographs correlated well with MR scans in patients with type D scans, but an inconsistent correlation was noted with lesser degrees of signal changes (types A–C), with the MR scans being more accurate in displaying the volume of avascular bone. Scans obtained less than 3 weeks after injury were not helpful in assessing for avascular necrosis. We found that high-quality MR images of the talus were consistently obtained in the presence of titanium screws in contrast to images obtained with stainless steel implants. We use titanium screws in all talar neck fracture repairs, because they permit high-quality MR images. We believe that further study of patients with Hawkins type III fractures and Hawkins type II fractures with equivocal radiographic evidence of avascular necrosis is warranted to try to identify those patients at risk for collapse and perhaps to guide weightbearing recommendations.

scholarly journals 3d gravity and quantum deformations: a Drinfel'd double approach

2012 ◽  
Vol 360 ◽  
pp. 012010
Author(s):  
A Ballesteros ◽  
F J Herranz ◽  
C Meusburger
Keyword(s):  
Drinfel’D Double ◽  
Quantum Deformations ◽  
Double Approach ◽  
3D Gravity

scholarly journals The Assessment of the Tourism Potential of the Tagus International Nature Reserve Landscapes Using Methods Based on the Opinion of the Demand

Land ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 68
Author(s):  
Dora Isabel Rodrigues Ferreira ◽  
José-Manuel Sánchez-Martín
Keyword(s):  
Agricultural Landscape ◽  
Nature Reserve ◽  
Pairwise Comparison ◽  
Agricultural Landscapes ◽  
Agricultural Activity ◽  
Aesthetic Value ◽  
Analytic Hierarchy ◽  
Natural Protected Areas ◽  
Double Approach ◽  
Tourism Potential

There are different methodologies to assess landscape preferences, however there is no consensual methodology that can be replicated to identify their tourism potential. Recent studies have focused on agricultural landscape preferences due to their cultural characteristics. Although agricultural activity conflicts with the management models of natural protected areas, traditional models and sustainable practices reveal opportunities to boost tourism in this area, both for their aesthetic value, and for the opportunity to preserve biodiversity and maintain “lively landscapes”. The present study focuses on a double approach to collect data to measure the preferences for landscape typologies to realize outdoor/recreative activities in Tagus International Nature Reserve (TINR), among them, agricultural landscapes, such as the agro-silvopastural system “Dehesa/Montado” or olive grove. The preference of the landscapes were evaluated through photographs with pairwise comparison and without photographs observation, in which 174 respondents were consulted with. The different methodologies applied allowed for the extraction of different results, which led to the assumption that in fact there is no single methodology to assess preferences. However, the application of the analytic hierarchy process (AHP) methodology with photographical pairwise comparison allowed for the extraction of more robust results when considering attractions with tourism typologies, revealing that “Cultural tourism/Rural mixed” and “Agritourism” were the most valued. This information is pertinent to support TINR managers and local tourism promoters to plan and structure products and services based on button-up methodologies.

scholarly journals Charles Peirce's Theory of Scientific Method

1970 ◽  
Author(s):  
Francis E. Reilly
Keyword(s):  
Scientific Inquiry ◽  
Scientific Method ◽  
Significant Part ◽  
Theory Of Knowledge ◽  
Theoretical Knowledge ◽  
Rich Diversity ◽  
Complex Thought ◽  
Double Approach ◽  
The Rich ◽  
Philosophical Questions

This book is an attempt to understand a significant part of the complex thought of CharlesSanders Peirce, especially in those areas which interested him most: scientific method and related philosophical questions. It is organized primarily from Peirce's own writings, taking chronological settings into account where appropriate, and pointing out the close connections of several major themes in Peirce's work which show the rich diversity of his thought and its systematic unity. Following an introductory sketch of Peirce the thinking and writer is a study of the spirit and phases of scientific inquiry, and a consideration of its relevance to certain outstanding philosophical views which Peirce held. This double approach is necessary because his views on scientific method are interlaced with a profound and elaborate philosophy of the cosmos. Peirce's thought is unusually close-knit, and his difficulty as a writer lies in his inability to achieve a partial focus without bringing into view numerous connections and relations with the whole picture of reality. This book attempts to understand Peirce as Peirce intended himself to be understood, and has presented what the author believes Peirce's philosophy of scientific method to be. The book singles out for praise Peirce's Greek insistence on the primacy of theoretical knowledge and his almost Teilhardian synthesis of evolutionary themes. Primarily philosophical, this volume analyzes Peirce's thought using a theory of knowledge and metaphysics rather than formal logic.

What Is the Best Treatment of Displaced Talar Neck Fractures?

2009 ◽  
pp. 502-505
Author(s):  
NICOLE L. FETTER ◽  
CHRISTOPHER P. CHIODO
Keyword(s):  
Talar Neck Fractures

Management of Talar Neck Fractures

Orthopedics ◽  
2011 ◽  
Vol 34 (9) ◽  
pp. 715-721 ◽  
Author(s):  
David J. Hak ◽  
Shishui Lin
Keyword(s):  
Talar Neck Fractures

scholarly journals Handheld echocardiography for screening and control of rheumatic heart disease study in Gezira state, Sudan: a double approach model

2018 ◽  
Vol 8 (4) ◽  
pp. 500-507 ◽  
Author(s):  
Sulafa Ali ◽  
Heitham Awadallah ◽  
Ahmed Al Hamim ◽  
Hussam Al Hussein ◽  
Mohamed Al Amin Al Sunni ◽  
...  
Keyword(s):  
Heart Disease ◽  
Rheumatic Heart Disease ◽  
Double Approach ◽  
Disease Study ◽  
And Control ◽  
Rheumatic Heart

scholarly journals Repair of a Comminuted Talar Neck Fracture using a Cellular Bone Allograft combined with a Textured Allograft Wedge

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0034
Author(s):  
Alaa Mansour ◽  
Timothy D. Howard ◽  
Elena Gianulis ◽  
Danielle Scheunemann
Keyword(s):  
Tissue Injury ◽  
Soft Tissue Injury ◽  
Compressive Force ◽  
Bone Allograft ◽  
Unique Challenge ◽  
Subtalar Dislocation ◽  
Neck Fracture ◽  
Cellular Bone ◽  
Cellular Bone Allograft ◽  
Talar Neck Fractures

Category: Trauma; Ankle Introduction/Purpose: Talar neck fractures are uncommon and are characterized by displacement, comminution, and soft tissue injury. Treatment of talar neck fractures while avoiding complications, such as osteonecrosis and long-term morbidity, presents a unique challenge to surgeons. One option for treating talar neck fractures is cellular bone allograft containing viable lineage- committed bone cells (V-CBA), which provides the osteoconductive, osteoinductive, and osteogenic properties needed for bone formation. Additionally, a structural textured allograft (STA) wedge designed to resist migration and sustain compressive force can also be used in repairing talar neck fractures. This case study describes the successful repair of a comminuted talar neck fracture using V-CBA combined with an STA wedge. Methods: A 46-year-old male patient sustained a talar neck fracture following a fall from a 12-foot ladder. Radiographic and computed tomography (CT) imaging revealed significant comminution, consequent varus angulation, and a large bony void, as well as dislocation of the posterior subtalar joint. The patient was otherwise healthy with no comorbidities. Open reduction internal fixation was performed laterally to reduce the posterior subtalar dislocation. Medially, a 6.5mm STA wedge was used to correct the varus deformity and 1cc of V-CBA was used to fill the void. Results: At 6 months, the talar neck fracture had healed with solid osseous consolidation evident on radiographic images. Conclusion: These results demonstrate that an STA wedge, with a textured design that resists migration, used in combination with a V-CBA successfully repaired a comminuted talar neck fracture.

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