Medical Terminology Daily (MTD) is a blog sponsored by Clinical Anatomy Associates, Inc. as a service to the medical community, medical students, and the medical industry. We post anatomical, medical or surgical terms, their meaning and usage, as well as biographical notes on anatomists, surgeons, and researchers through the ages. Be warned that some of the images used depict human anatomical specimens.

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A Moment in History

Antoine Louis

French surgeon, anatomist, and physiologist. Following his medical studies and a long career as a physiologist, Antoine Louis was named Permanent Secretary of the Royal French Academy of Surgery. His other titles were those of Professor of the Royal Academy, Consultant Surgeon of the Armies of the King, member of the Royal Society of Sciences of Montpellier, Inspector of the Royal Military Hospitals, and Doctor in Law of the University of Paris. As a member of these academies Louis was instrumental in the design and construction of the guillotine. Initially called the "Louisette", this device was later named after another French physician in the same committee, Dr. Joseph-Ignace Guillotin.

Antoine Louis' name is better know to history as the eponymic origin of the "sternal angle" also know as the "Angle of Louis" and synonymously (probably by misspelling or translation) the "angle of Lewis", and "angle of Ludwig". This anatomical landmark is extremely important as it serves as a superficial landmark for important anatomical occurrences (click here).

As a point of controversy, there are some that contest the history of this eponym adjudicating it to Pierre Charles Alexander Louis (1787-1872), another French physician dedicated to the study of tuberculosis.

1. Srickland, N; Strickland A Angle of Louis, More Than Meets the Eye. MedTalks:
2. Ramana, R. K., Sanagala, T. and Lichtenberg, R. (2006), A New Angle on the Angle of Louis. Congestive Heart Failure, 12: 197–199
. "The origin of Medical Terms" Skinner, HA; 1970

 "Clinical Anatomy Associates, Inc., and the contributors of "Medical Terminology Daily" wish to thank all individuals who donate their bodies and tissues for the advancement of education and research”.

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Prof. Maria F. Cortés, DDS, MSc

Prof. Maria F. Cortés, DDS, MSc

Dr. María Fernanda Cortés Sylvester is a Dentist based in Santiago de Chile. She is a Specialist in Dentomaxillofacial Radiology and has also a Master’s degree in Temporomandibular disorders and orofacial pain obtained at the Neapolitan University Federico II, Italy.

Currently she is an assistant professor, lecturer of Human Anatomy at the Faculty of Dentistry of the Finis Terrae University, and  teacher in charge of the first year’s Anatomy course.

She also collaborates as a Postgraduate teacher for students of the “Anatomical Bases of Normal Imaging” diploma program at the Medical school of the same university.

Besides Anatomy, she is also an instructor of Oral and Maxillofacial Radiology at the Dentistry faculty of University of Chile for under and postgraduates, and is a lecturer on the morphofunction module for first-years dentistry students at Finis Terrae University.

Due to her background in both Anatomy and Oral Radiology she is part of the Oral and Maxillofacial Radiology Society of Chile and the AACA (American Association of Clinical Anatomists).

Dr. Cortés has her own private practice in Santiago, Chile where she dedicates to all general aspects in dentistry, collaborating with a multidisciplinary group of dentists. At her private practice, she also focuses on the treatment of patients with temporomandibular disorders.

Clinical Anatomy Associates, Inc is proud to have Dr. Cortés as a contributor to "Medical Terminology Daily" and as a consultant to our team.

La Dra. María Fernanda Cortés Sylvester es cirujano dentista con sede en Santiago de Chile. Es especialista en Radiología Dento Maxilofacial de la Universidad de Chile y tiene una Maestría en Trastornos Temporomandibulares y Dolor orofacial, obtenida en la universidad napolitana Universidad Federico II, Italia.

Actualmente es profesor asistente encargada de la cátedra de Anatomía Humana de la Facultad de Odontología de la Universidad Finis Terrae., en donde también colabora como docente en el postítulo de "Bases anatómicas de la Imagenología normal", programa de la Escuela de Medicina.

Además de Anatomía, es Instructor de Radiología Oral y Maxilofacial en la Facultad de Odontología de la Universidad de Chile en pre y postgrado, y colabora como docente en el módulo morfofunción para los estudiantes de primer año de odontología en la Universidad Finis Terrae.

Debido a su desarrollo en estas áreas es parte de la Sociedad de Radiología oral y maxilofacial de Chile y la AACA (Asociación Americana de Anatomistas Clínicos).

La Dra. Cortés tiene su propia oficina odontológica privada en Santiago, Chile, donde se dedica a la odontología general con enfoque en el tratamiento de pacientes con trastornos odontológicos y máxilofaciales.

Contact information

Dr. María Fernanda Cortés Sylvester

Dentistry Faculty
Finis Terrae University
1509 Pedro de Valdivia Avenue
7501015 RM Providencia
Santiago, CHILE

To contact Dr. Cortés  via e-mail, please use our "Contact Us" form.