jueves, 19 de enero de 2017

Investigación de la susceptibilidad magnética de la articulación de la rodilla humana a 7 teslas

Investigación de la susceptibilidad magnética de la articulación de la rodilla humana a 7 teslas



Investigación de la susceptibilidad magnética de la articulación de la rodilla humana a 7 teslas

 Investigating magnetic susceptibility of human knee joint at 7 tesla

Fuente
Este artículo es originalmente publicado en:
De:
Wei H1,2Dibb R3Decker K3Wang N1Zhang Y1,2Zong X4Lin W4,5Nissman DB4,5Liu C1,2,6.
Todos los derechos reservados para:
© 2017 International Society for Magnetic Resonance in Medicine.
Abstract
PURPOSE:
To evaluate the magnetic susceptibility properties of different anatomical structures within the knee joint using quantitative susceptibility mapping (QSM).
CONCLUSION:
The arrangement of the collagen fibrils is significant, and likely the most dominant source of magnetic susceptibility anisotropy. Quantitative susceptibility mapping offers a means to characterize magnetic susceptibility properties of tissues in the knee joint. It is sensitive to collagen damage or degeneration and may be useful for evaluating the status of knee diseases, such as meniscal tears and cartilage disease. Magn Reson Med, 2017. © 2017 International Society for Magnetic Resonance in Medicine.
Resumen
PROPÓSITO:
Evaluar las propiedades de susceptibilidad magnética de diferentes estructuras anatómicas dentro de la articulación de la rodilla utilizando la cartografía cuantitativa de susceptibilidad (QSM).

CONCLUSIÓN:
La disposición de las fibrillas de colágeno es significativa y, probablemente, la fuente más dominante de susceptibilidad magnética anisotropía. La cartografía cuantitativa de susceptibilidad ofrece un medio para caracterizar las propiedades de susceptibilidad magnética de los tejidos en la articulación de la rodilla. Es sensible al daño o degeneración del colágeno y puede ser útil para evaluar el estado de las enfermedades de la rodilla, como los desgarres meniscales y la enfermedad del cartílago. Magn Reson Med, 2017. © 2017 Sociedad Internacional de Resonancia Magnética en Medicina.
© 2017 International Society for Magnetic Resonance in Medicine.
KEYWORDS:
cartilage; knee; quantitative susceptibility mapping
PMID: 28097689   DOI:  
[PubMed – as supplied by publisher]

Inyecciones Meniscales Guiadas Sonográficamente : Viabilidad, Técnicas y Validación.

Inyecciones Meniscales Guiadas Sonográficamente : Viabilidad, Técnicas y Validación.



http://clinicaderodilla.xyz/academia/inyecciones-meniscales-guiadas-sonograficamente-viabilidad-tecnicas-y-validacion/



Sonographically Guided Knee Meniscus Injections: Feasibility, Techniques and Validation.





Fuente
Este artículo es originalmente publicado en:



https://www.ncbi.nlm.nih.gov/pubmed/28093371

http://www.pmrjournal.org/article/S1934-1482(17)30032-1/fulltext?rss=yes



De:

Baria MR1Sellon JL2Lueders D3Smith J4.



Todos los derechos reservados para:



Copyright © 2017 American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.





Abstract

BACKGROUND:

There is a growing interest in the use of biologic agents such as platelet-rich plasma and mesenchymal stem/stromal cells to treat musculoskeletal injuries, including meniscal tears. Although prior research has documented the role of diagnostic ultrasound to evaluate meniscal tears, sonographically guided (SG) techniques to specifically deliver therapeutic agents into the meniscus have not been described.

OBJECTIVE:

To describe and validate SG injection techniques for the body and posterior horn of the medial and lateral meniscus.

CONCLUSIONS:

SG meniscus injections are feasible and can accurately and safely deliver injectates such as regenerative agents into bodies and posterior horns of the medial and lateral menisci. The role of SG intrameniscal injections in the treatment of patients with degenerative and traumatic meniscal disorders warrants further exploration.




Resumen

ANTECEDENTES:
Existe un interés creciente en el uso de agentes biológicos tales como el plasma rico en plaquetas y las células troncales / estroma mesenquimatoso para tratar las lesiones musculoesqueléticas, incluyendo los desgarres  meniscales. Aunque una investigación previa ha documentado el papel de la ecografía diagnóstica para evaluar los desgarres meniscales, no se han descrito técnicas guiadas por ultrasonido (SG) para entregar específicamente agentes terapéuticos al menisco.
OBJETIVO:
Describir y validar las técnicas de inyección SG para el cuerpo y el cuerno posterior del menisco medial y lateral.
CONCLUSIONES:
Las inyecciones de menisco sistémico son viables y pueden administrar inyecciones precisas y seguras, tales como agentes regenerativos, en cuerpos y cuernos posteriores de los meniscos medial y lateral. El papel de las inyecciones intrameniscales SG en el tratamiento de pacientes con trastornos meniscales degenerativos y traumáticos merece una mayor exploración.






PMID: 28093371  DOI:  10.1016/j.pmrj.2016.12.012

[PubMed – as supplied by publisher]

miércoles, 18 de enero de 2017

Transplante facial / Face transplantation

Enero 18, 2017. No. 2573



Estimad@ Dr@ Víctor Valdés:  



Transplante de cara. Retos anestésicos
Face transplantation: Anesthetic challenges.
World J Transplant. 2016 Dec 24;6(4):646-649. doi: 10.5500/wjt.v6.i4.646.
Abstract
Face transplantation is a complex vascular composite allotransplantation (VCA) surgery. It involves multiple types of tissue, such as bone, muscles, blood vessels, nerves to be transferred from the donor to the recipient as one unit. VCAs were added to the definition of organs covered by the Organ Procurement and Transplantation Network Final Rule and National Organ Transplant Act. Prior to harvest of the face from the donor, a tracheostomy is usually performed. The osteotomies and dissection of the midface bony skeleton may involve severe hemorrhagic blood loss often requiring transfusion of blood products. A silicon face mask created from the facial impression is used to reconstruct the face and preserve the donor's dignity. The recipient airway management most commonly used is primary intubation of an existing tracheostoma with a flexometallic endotracheal tube. The recipient surgery usually averages to 19-20 h. Since the face is a very vascular organ, there is usually massive bleeding, both in the dissection phase as well as in the reperfusion phase. Prior to reperfusion, often, after one sided anastomosis of the graft, the contralateral side is allowed to bleed to get rid of the preservation solution and other additives. Intraoperative product replacement should be guided by laboratory values and point of care testing for coagulation and hemostasis. In face transplantation, bolus doses of pressors or pressor infusions have been used intraoperatively in several patients to manage hypotension. This article reviews the anesthetic considerations for management for face transplantation, and some of the perioperative challenges faced.
KEYWORDS: Face transplantation; Facial reconstruction; Organ harvest; Vascular composite allotransplantation
Algoritmo para la procuración de la cara y mútiples órganos de un donador con muerte cerebral
Algorithm for total face and multiorgan procurement from a brain-dead donor.
Am J Transplant. 2013 Oct;13(10):2743-9. doi: 10.1111/ajt.12382. Epub 2013 Aug 5.
Abstract
Procurement of a facial vascularized composite allograft (VCA) should allow concurrent procurement of all solid organs and ensure their integrity. Because full facial procurement is time-intensive, "simultaneous-start" procurement could entail VCA ischemia over 12 h. We procured a total face osteomyocutaneous VCA from a brain-dead donor. Bedside tracheostomy and facial mask impression were performed preoperative day 1. Solid organ recovery included heart, lungs, liver, kidneys, and pancreas. Facial dissection time was 12 h over 15 h to diminish ischemia while awaiting recipient preparation. Solid organ recovery began at 13.5 h, during midfacial osteotomies, and concluded immediately after facial explantation. Facial thoracic and abdominal teams worked concurrently. Estimated blood loss was 1300 mL, requiring five units of pRBC and two units FFP. Urine output, MAP, pH and PaO2 remained normal. All organs had good postoperative function. We propose an algorithm that allows "face first, concurrent completion" recovery of a complex facial VCA by planning multiple pathways to expedient recovery of vital organs in the event of clinical instability. Beginning the recipient operation earlier may reduce waiting time due to extensive recipient scarring causing difficult dissection.
KEYWORDS: Composite tissue transplantation; face transplantation; multiorgan donor; organ and tissue procurement; organ protection and preservation; organ sharing

5to Curso Internacional de Anestesiología cardiotorácica, vascular, ecocardiografía y circulación extracorpórea. SMACT
Mayo 4-6, 2017, Ciudad de México
Informes Dr. Hugo Martínez Espinoza bajamed@hotmail.com 
Regional Anesthesiology and Acute Pain Medicine Meeting
April 6-8, 2017, San Francisco, California, USA
ASRA American Society of Regional Anesthesia and Pain Medicine
California Society of Anesthesiologists
Annual Meeting April 27-30, 2017
San Francisco California
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Anestesiología y Medicina del Dolor

52 664 6848905

Copyright © 2015

martes, 17 de enero de 2017

Fundamentos de la fractura pélvica

Fundamentos de la fractura pélvica



http://www.clinicadeartroscopia.com.mx/academia/fundamentos-de-la-fractura-pelvica/



Pelvic fracture Basics



Fuente
Este artículo es originalmente publicado en:

https://youtu.be/anqqjQW1ghI



De y todos los derechos reservados para:



Courtesy: Dr Saqib Rehman, MD
Associate Professor
Director of Orthopaedic Trauma
Temple University, Philadelphia
Pennsylvania, USA



Pelvic fractures – assessment and management for orthopaedic surgery residents. Lecture 1 of 3. Narrated, annotated video lecture from OrthoClips.com



lunes, 16 de enero de 2017

Valoración de la articulación patelo-femoral.

Valoración de la articulación patelo-femoral.



Valoración de la articulación patelo-femoral.

EXAMINATION OF THE PATELLOFEMORAL JOINT


Fuente
Este artículo es originalmente publicado en:


De:
Int J Sports Phys Ther. 2016 Dec;11(6):831-853.


Todos los derechos reservados para:


Abstract

Patellofemoral pain is one of the leading causes of knee pain in athletes. The many causes of patellofemoral pain make diagnosis unpredictable and examination and treatment difficult. This clinical commentary discusses a detailed physical examination routine for the patient with patellofemoral pain. Critically listening and obtaining a detailed medical history followed by a clearly structured physical examination will allow the physical therapist to diagnose most forms of patellofemoral pain. This clinical commentary goes one step further by suggesting an examination scheme and order in which it should be performed during the examination process. This step-by-step guide will be helpful for the student or novice therapist and serve as review for those that are already well versed in patellofemoral examination.

KEYWORDS:

Patellofemoral assessment and Clinical reasoning; evaluation

PMID: 27904788   PMCID:  PMC5095938

[PubMed – in process]