scholarly journals New Technique for Tibiotalar Arthrodesis Using a New Intramedullary Nail Device

2018 ◽  
Vol 3 (2) ◽  
pp. 2473011418S0000
Author(s):  
Sherif Dabash ◽  
Emmanuel Eisenstein ◽  
Amr Abdelgawad
Keyword(s):  
Intramedullary Nail ◽  
Subtalar Joint ◽  
Ankle Arthrodesis ◽  
New Technique ◽  
Radius Of Curvature ◽  
Computer Assisted ◽  
Intramedullary Device ◽  
Sinus Tarsi Approach ◽  
Tibiotalar Arthrodesis ◽  
A New Technique

Category: Ankle, Basic Sciences/Biologics Introduction/Purpose: Ankle arthrodesis is performed in a variety of methods.We propose a new technique for tibiotalar arthrodesis using a newly designed intramedullary nail Methods: We proposed the development of an intramedullary device for ankle arthrodesis which spared the subtalar joint using a sinus tarsi approach. Standard saw bones models and computer-assisted modeling and stress analysis were used to develop different nail design geometries and determine the feasibility of insertion. After the final design was constructed, the device was tested on three cadaveric specimens. Results: Four basic nail geometries were developed. The optimal design was composed of two relatively straight segments, each with a different radius of curvature for their respective tibial and talar component. We successfully implemented this design into three cadaveric specimens Conclusion: Our newly designed tibiotalar nail provides a new technique for isolated tibiotalar fusion. It utilizes the advantages of a tibiotalar calcaneal nail and spares the subtalar joint. This design serves as the foundation for future research to include compression options across the tibiotalar joint and eventual transition to clinical practice.

scholarly journals New Technique for Tibiotalar Arthrodesis Using a New Intramedullary Nail Device: A Cadaveric Study

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Emmanuel D. Eisenstein ◽  
Mario Rodriguez ◽  
Amr A. Abdelgawad
Keyword(s):  
Intramedullary Nail ◽  
Subtalar Joint ◽  
Ankle Arthrodesis ◽  
New Technique ◽  
Radius Of Curvature ◽  
Computer Assisted ◽  
Intramedullary Device ◽  
Sinus Tarsi Approach ◽  
Tibiotalar Arthrodesis ◽  
A New Technique

Introduction. Ankle arthrodesis is performed in a variety of methods. We propose a new technique for tibiotalar arthrodesis using a newly designed intramedullary nail.Methods. We proposed development of an intramedullary device for ankle arthrodesis which spared the subtalar joint using a sinus tarsi approach. Standard saw bones models and computer assisted modeling and stress analysis were used to develop different nail design geometries and determine the feasibility of insertion. After the final design was constructed, the device was tested on three cadaveric specimens.Results. Four basic nail geometries were developed. The optimal design was composed of two relatively straight segments, each with a different radius of curvature for their respective tibial and talar component. We successfully implemented this design into three cadaveric specimens.Conclusion. Our newly designed tibiotalar nail provides a new technique for isolated tibiotalar fusion. It utilizes the advantages of a tibiotalar calcaneal nail and spares the subtalar joint. This design serves as the foundation for future research to include compression options across the tibiotalar joint and eventual transition to clinical practice.

scholarly journals Removal of a Broken Cannulated Intramedullary Nail: Review of the Literature and a Case Report of a New Technique

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Amr A. Abdelgawad ◽  
Enes Kanlic
Keyword(s):  
Case Report ◽  
Intramedullary Nail ◽  
Small Diameter ◽  
New Technique ◽  
Long Bones ◽  
Review Of The Literature ◽  
Tibial Nail ◽  
A New Technique ◽  
Nail Removal ◽  
Real Challenge

Nonunion of long bones fixed with nails may result in implant failure. Removal of a broken intramedullary nail may be a real challenge. Many methods have been described to allow for removal of the broken piece of the nail. In this paper, we are reviewing the different techniques to extract a broken nail, classifying them into different subsets, and describing a new technique that we used to remove a broken tibial nail with narrow canal. Eight different categories of implant removal methods were described, with different methods within each category. This classification is very comprehensive and was never described before. We described a new technique (hook captured in the medulla by flexible nail introduced from the locking hole) which is a valuable technique in cases of nail of a small diameter where other methods cannot be used because of the narrow canal of the nail. Our eight categories for broken nail removal methods simplify the concepts of nail removal and allow the surgeon to better plan for the removal procedure.

A NEW TECHNIQUE OF ANKLE ARTHRODESIS

1992 ◽  
Vol 62 (12) ◽  
pp. 965-968 ◽  
Author(s):  
D. H. Sonnabend ◽  
D. Duckworth
Keyword(s):  
Ankle Arthrodesis ◽  
New Technique ◽  
A New Technique

scholarly journals Computer-Assisted Navigation in Patellofemoral Arthroplasty: a New Technique to Improve Rotational Position of the Trochlea

2013 ◽  
Vol 9 (2) ◽  
pp. 118-122 ◽  
Author(s):  
Philippe Hernigou ◽  
Charles Henri Flouzat-Lachaniette ◽  
William Delblond ◽  
Pascal Duffiet ◽  
Didier Julian
Keyword(s):  
New Technique ◽  
Computer Assisted ◽  
Patellofemoral Arthroplasty ◽  
Assisted Navigation ◽  
Rotational Position ◽  
A New Technique

EULDPH: A new technique for making computer‐assisted depth estimates from magnetic data

Geophysics ◽  
1982 ◽  
Vol 47 (1) ◽  
pp. 31-37 ◽  
Author(s):  
D. T. Thompson
Keyword(s):  
Theoretical Basis ◽  
Computational Algorithm ◽  
Real Data ◽  
New Technique ◽  
Magnetic Data ◽  
Computer Assisted ◽  
Model Studies ◽  
Geologic Model ◽  
A New Technique

A method for rapidly making depth estimates from large amounts of magnetic data is described. The technique is based upon Euler’s homogeneity relationship (hence, the acronym EULDPH) and differs from similar techniques which are currently available in that no basic geologic model is assumed. Therefore, EULDPH can be applied in a wider variety of geologic situations than can model‐dependent techniques. The price paid for this increased flexibility is a heavier burden on the interpreter. Successful interpretation of EULDPH results is partially dependent upon the interpreter’s intuitive understanding of the concept of the equivalent stratum and also partially dependent upon experience with model studies. The theoretical basis, the computational algorithm, and applications of EULDPH to model and real data are presented.

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