Prominent Neurosurgery Books of the Western World: How They Defined the Era of Modern Neurosurgery in the 19th Century.

The aim of this article is to introduce the 19th century neurosurgery books to reveal their contributions to modern neurosurgery. Methods In this study, 29 books were accessed, and reviewed, and the resources from the late 18th century and early 20th century were included. However, neurology or general surgery books that included neurosurgical subjects or chapter were excluded unless there were revolutionary ideas in their relevant chapters. The books of this period observed to have some common differences from the books that were written in the previous century. Parallel to the concept of cerebral localization, which started to develop in this period, neurosurgery evolved from skull surgery to brain surgery. Due to the advancements in patient care, anesthesia and sterile techniques, surgical medical branches showed rapid development in the 1800s. During this period, cerebral localization concept changed the comprehension and approach in neurosurgery and opened the gate of a new era in the field of neurological surgery unlike other branches and helped to establish modern neurosurgery. 19th century surgeons became able to operate on more complex cases with more advanced techniques. Knowledge of published pioneer papers and books help understanding of emergence of neurological surgery as a separate discipline.

Al-Zahrawi (936-1013 AD): On the Surgical Treatment of Neurological Disorders by the Father of Operative Surgery.

BACKGROUND: Medical knowledge during the medieval ages flourished under the influence of great scholars of the Islamic Golden age such as Ibn Sina (Latinized as Avicenna), Abu Bakr al-Razi (Rhazes), and Abu al-Qasim Khalaf ibn al-Abbas al-Zahrawi, known as Albucasis. Much has been written on al-Zahrawi's innovation in various disciplines of medicine and surgery. In this article, we focus for on the contributions of al-Zahrawi toward the treatment of neurological disorders in the surgical chapters of his medical encyclopedia, Kitab al-Tasrif (The Method of Medicine). METHODS: Excerpts from a modern copy of volume 30 of al-Zahrawi's Kitab al-Tasrif were reviewed and translated by the primary author from Arabic to English, to further provide specific details regarding his neurosurgical knowledge. In addition, a literature search was performed using PubMed and Google Scholar to review prior reports on al-Zahrawi's neurosurgical instructions. RESULTS: In addition to what is described in the literature of al-Zahrawi's teachings in cranial and spine surgery, we provide insight into his diagnosis and management of cranial and spinal trauma, the devices he used, and prognostication of various traumatic injuries. CONCLUSIONS: Al-Zahrawi was a renowned physician during the Islamic Golden age who made significant contributions to the diagnosis and treatment of neurological conditions, particularly cranial and spinal cord injuries. He developed innovative surgical techniques for trephination and spinal traction, which are still used in modern neurosurgery. His insights make him worthy of recognition as an important figure in the history of neurological surgery.

The transition from cranial surgery to neurosurgery in East London, 1760-1960.

The emergence of neurosurgery from the practice of cranial surgery between the eighteenth and the twentieth centuries in London, UK, is well documented, including the role of Sir Victor Horsley, the first neurosurgical appointee at the National Hospital Queen Square in 1886. The process of this transition elsewhere in London and the subsequent foundation of other neurosurgical units are less well described. In East London, the status of St. Bartholomew's Hospital (Barts) as the oldest London hospital still active on its original site and its comprehensive archives allow an unusually long history of surgical practice in the specialty to be studied. Using these archives and other primary and secondary sources, this article describes the transition of cranial surgery in East London from the general surgeons, limited to the treatment of brain and skull injury, to the specialized discipline of neurosurgery. We discuss the culmination of this process in the foundation of three neurosurgical units at London Hospital, Whitechapel, by Sir Hugh B. Cairns from 1927; at Barts Hospital, Smithfield, by John E. A. O'Connell from 1937; and at Oldchurch Hospital, Romford, by Leslie C. Oliver from 1945. Two modern neurosurgical units, in Whitechapel and Romford, have taken forward the work begun by this group.

Excelencia en Neurocirugía: María Cristina García-Sancho, the First Latina Neurosurgeon in the World.

BACKGROUND: Neurosurgery is a specialty that has been dominated by males. Although there has been an increase in the number of women in the field, it is not yet close to being equal. Some noteworthy women who have carved the path for other women to follow in their footsteps include Drs. Sofía Ionescu and Diana Beck, the first and second female neurosurgeons worldwide, respectively. However, there are limited publications on Dr. María Cristina García-Sancho, the first Latina neurosurgeon. METHODS: The purpose of this review was to illuminate the neurosurgical community on the life of Dr. García-Sancho. A thorough literature was performed on medical and non-medical publications that were either authored by Dr. García-Sancho or mentioned her directly. RESULTS: Dr. García-Sancho earned her medical degree at the School of Medicine of the National Autonomous University of Mexico under the guidance of Dr. Clemente Robles, who founded Mexico's first neurosurgical department. Her training took her worldwide. CONCLUSIONS: Her expertise allowed her to pioneer a revolutionary advancement known as the one-step bilateral cordotomy. Her perseverance led her to becoming the head of the Department of Neurosurgery at the National Cancer Institute of Mexico and co-found the Mexican Society of Neurological Surgery, where she served on the board of directors. This review aims to advocate for an equitable environment in the field of neurosurgery with Dr. García-Sancho's story.

[Pavel I. Emdin: Biography without blank spots]. / Pavel Iosifovich Emdin Biografiya neirokhirurga bez belykh pyaten.

The authors present the career of Professor Pavel I. Emdin as one of the pioneers of Russian neurosurgery. Archive documents, biography and scientific articles are analyzed. The merit of Pavel I. Emdin as an organizer of national health care is «armament¼ of neuropathologists with surgical methods of treatment. He created the first in Russia Department of Nervous Diseases with clinics of neurology and neurosurgery at the Don University in Rostov-on-Don. He created the Rostov school of neurosurgeons, whose representatives continued the work of their teacher in various regions of the Soviet Union. Professor Pavel I. Emdin is a bright figure in the galaxy of Russian and Soviet neuropathologists and neurosurgeons with outstanding organizational and professional qualities regarding development of neurosurgery in our country.

Women in Neurosurgery: Turkey's Yildiz Yalçinlar.

BACKGROUND: Severalreports have been published on the history of pioneering women pursuing neurosurgery. Women in Turkey started receiving neurosurgery specialty training later than men, as was the case in other parts of the world. However, compared to other countries, Turkey saw the admission of women in neurosurgery sooner, with Aysima Altinok who obtained her specialization in 1959. Nevertheless, Yildiz Yalçinlar, one of the pioneers, remains relatively unknown. METHODS & RESULTS: In this paper, we witness Yildiz Yalçinlar's journey, from her graduation from Ankara Medical Faculty in 1954 and her subsequent specialization in general surgery to her arrival in Igdir as a young surgeon in the early 1960s, where she faced cultural challenges. We explored her transition into neurosurgery, becoming the second neurosurgeon in Turkey in 1965. We examine her complex career progression from receiving her specialization in neurosurgery to her academic journey toward becoming a department chief and her role as one of the founding members of the Turkish Neurosurgery Association. CONCLUSIONS: In Turkey, the number of women practicing as neurosurgeons has increased consistently. Despite this upward trend, the representation of women in the field of neurosurgery remains disproportionately low. We hope that Yildiz Yalçinlar's achievements, which began in the early 60s, will encourage women today and contribute to the continuing growth of neurosurgery.

The evolution of pediatric neurosurgery: reflection of personal experience of the last half-century.

OBJECTIVES: In the past 50 years, pediatric neurosurgery has made tremendous strides, and gained its own identity as a distinct subspecialty. I have personally observed this progress and evolution in pediatric neurosurgery in multiple dimensions, which are described based upon my own experience and reflection. METHODS: The development and evolutions of multiple domains of pediatric neurosurgery, including neuroimaging, hydrocephalus, pediatric brain tumor, spinal dysraphism, craniosynostosis, vascular malformation, functional neurosurgery and spinal disorders were reviewed and commented on based upon my own experience and reflection. RESULTS: The field of pediatric neurosurgery has grown in all aspects of diagnosis and therapy owing to the introduction of computers, innovative techniques and technologies and new discoveries of scientific data including molecular investigations. CONCLUSION: A minimally invasive approach and molecular target therapy are a current trend. The past half century's clinical experience and advances in biomedical knowledge and techniques provide foundation for further improvement in the care of children of the next generation. Prospective artificial intelligence will likely promote further advances in pediatric neurosurgery.

Clarence Sumner Greene, Sr. (1901-1957): The First Board-Certified Black Neurosurgeon in the United States.

BACKGROUND: This historical account reviews the life and lasting impact of Dr. Clarence Sumner Greene Sr. in neurosurgery. The article covers his early childhood, adulthood, and late-adulthood years to provide insights into his achievements and the lasting impact. METHODS: The writing of this project was sparked by the discovery of original scientific and bibliographical information about Greene Sr. The article thoroughly reviews Greene's upbringing, achievements, and the significance of his work on modern medicine. RESULTS: Clarence Sumner Greene, Sr. paved for African American physicians within neurosurgery and other medical specialties. While living through the segregation and progressive eras, Greene pursued his medical education at Howard University College of Medicine from 1932 to 1936 and graduated at the age of 34. He completed his general residency training at Howard and went on to become an assistant professor of surgery at Howard University School of Medicine in 1943. Five years later, Dr. Wilder G. Penfield offered Greene the chance to train under him in a 2-year neurosurgery residency program at the Montreal Neurological Institute of McGill University from 1947 to 1949. Greene returned to Howard in 1949, eventually becoming the Chief of Neurosurgery and overhauling neurosurgical care by introducing advanced surgical and diagnostic procedures until his unfortunate death in 1957. CONCLUSIONS: Our article provides glimpses into the life of Dr. Greene Sr. and his marked impact on neurosurgery. His significant contributions to the field of medicine and ability to strive through racial barriers and social injustice provide guidance, support, and encouragement to aspiring physicians from all backgrounds.

Emanuel Olatunde Alaba Olanrewaju Odeku (1927-1974): First African Neurosurgeon Trained in the United States and Establisher of the National and West African Postgraduate Medical Colleges.

BACKGROUND: In this comprehensive historical account, the authors delve into the remarkable trajectory of Dr. Latunde E. Odeku, a pioneering figure in neurosurgery. METHODS: The inspiration for this project was ignited by the discovery of the original scientific and bibliographic materials of Latunde Odeku, a renowned Nigerian neurosurgeon and the first African neurosurgeon in history. Following a thorough review of the literature and information available on Dr. Odeku, we have compiled a comprehensive and detailed analysis of his life, work, and legacy. RESULTS: This paper begins by introducing his childhood and early education in Nigeria, highlights his journey through medical school and residency in the United States, and follows his career and role in establishing the first neurosurgical unit in West Africa. We celebrate the life and legacy of Latunde Odeku, a trailblazing neurosurgeon whose contribution has inspired generations of medical professionals in Africa and around the world. CONCLUSIONS: This article sheds light on the remarkable life and achievements of Dr. Odeku and his trailblazing work for generations of doctors and researchers.

Neurosurgery during the Greco-Italian War (World War II): the management of war-related head injuries at the Italian field hospital of Sinanaj in Albania.

During the Greco-Italian War (World War II [WWII], 1940-1941), an Italian field hospital was set up in Sinanaj, Albania. The hospital's military surgeons carefully collected information about the characteristics and management of patients with war-related injuries. In 1942, they published a detailed report, with a section dedicated to the management of war-related head injuries. The aim of this report is to analyze that section, to describe the characteristics and neurosurgical management of war-related head injuries, and to depict the status of war neurosurgery in the Royal Italian Army during WWII. The analysis revealed that, during the Greco-Italian War (November 1940-April 1941), 149 patients with war-related head injuries were admitted to the Sinanaj hospital, and 48 patients underwent surgery. Head injuries were caused by bomb fragments in 126 patients, bullets in 5 patients, and other causes (falls from height, vehicle accidents, or rock fragments) in 18 patients. Six patients (12.5%) died after surgery. Before surgery, patients underwent resuscitation with blood transfusions and fluid. Preoperatively, a plain head radiograph was usually acquired to locate metallic and bone fragments. The surgical technique consisted of craniotomy or craniectomy, aggressive debridement of metallic and bone fragments, and watertight dural closure. Surgical drainage, overall aseptic technique, serial spinal taps, and perioperative antibiotics were used to prevent infections. The surgical aims and technique used by the Italian surgeons for the management of head injuries were similar to those of the Allied surgeons during WWII. Operative mortality was also comparable. Although the surgical technique for war-related head injuries has evolved since WWII, many aspects of the technique used by the Italian and Allied surgeons during WWII are still in the standard of care today.

Management of injuries on the 16th-century battlefield: Ambroise Paré's contributions to neurosurgery and functional recovery.

During the 1536 siege of Turin in northern Italy, a young French barber-surgeon abandoned the conventional treatment of battle-inflicted wounds, launching a revolution in military medicine and surgical techniques. Ambroise Paré (1510-1590) was born into a working-class Huguenot family in Laval, France, during an era when surgery was not considered a respectable profession. He rose from humble origins as a barber-surgeon, a low-ranked occupation in the French medical hierarchy, to become a royal surgeon (chirurgien ordinaire du Roi) serving 4 consecutive French monarchs. His innovative ideas and surgical practice were a response to the environment created by new military technology on 16th-century European battlefields. Gunpowder weapons caused unfamiliar, complicated injuries that challenged Paré to develop new techniques and surgical instruments. Although Paré's contributions to the treatment of wounds and functional prosthetics are documented, a deeper appreciation of his role in military neurosurgery is needed. This paper examines archives, primary texts, and written accounts by Paré that reveal specific patient cases highlighting his innovative contributions to neurotrauma and neurosurgery during demanding and harrowing circumstances, on and off the battlefield, in 16th-century France. Notably, trepanation indications increased because of battlefield head injuries, and Paré frequently described this technique and improved the design of the trepan tool. His contribution to neurologically related topics is extensive; there are more chapters devoted to the nervous system than to any other organ system in his compendium, Oeuvres. Regarding anatomical knowledge as fundamentally important and admiring the contemporary contributions of Andreas Vesalius, Paré reproduced many images from Vesalius' works at his own great expense. The manner in which Paré's participation in military expeditions enabled collaboration with multidisciplinary artisans on devices, including surgical tools and prosthetics, to restore neurologically associated functionality is also discussed. Deeply religious, in a life filled with adventure, and serving in often horrendous conditions during a time when Galenic dogma still dominated medical practice, Paré developed a reputation for logic, empiricism, technology, and careful treatment. "I have [had] the opportunity to praise God, for what he called me to do in medical operation, which is commonly called surgery, which could not be bought with gold or silver, but by only virtue and great experimentation."

The deep roots of military service in neurological surgery: an academic genealogical analysis of the founding generation.

Throughout human history, advancements in medicine have evolved out of periods of war. The carnage of battlefield injuries provided wartime surgeons an unprecedented opportunity to study anatomy, develop novel techniques, and improve systems of care. As a specialty that was established and evolved during the first half of the 20th century, neurological surgery was heavily influenced by the experiences of its founders during the World Wars I and II. Utilizing the published Neurosurgery Tree, the authors conducted an academic genealogical analysis to systematically define the influence of wartime service on neurosurgery's earliest generations. Through review of the literature and military records, the authors determined that at least 60% of American neurosurgical founders and early leaders served during World Wars I and/or II. Inspired by the call to serve their nation as forces for good, these individuals were heralded as expert clinicians, innovative systems thinkers, and prolific researchers. Importantly, the service of these early leaders helped highlight the viability of neurosurgery as a distinct specialty and provided a framework for early neurosurgical education and expansion. The equipment, techniques, and guidelines that were developed during these wars, such as management of craniocerebral trauma, peripheral nerve repair, and hemostasis, set the foundation for modern neurosurgical practice.

Neurosurgical developments of Thierry de Martel (1875-1940), French neurosurgery pioneer, during World Wars I and II.

Following France's entry into World War I on August 3, 1914, Thierry de Martel (1875-1940), the French neurosurgery pioneer, served on the front line and was wounded on October 3, 1914. He was then assigned as a surgeon in temporary hospitals in Paris, where he published his first observations of cranioencephalic war wounds. In 1915, de Martel met Harvey Cushing at the American Hospital in Neuilly, where de Martel was appointed chief surgeon in 1916. In 1917, he published with the French neurologist Charles Chatelin a book (Blessures du crâne et du cerveau. Clinique et traitement) with the aim to optimize the practice of wartime brain surgery. This book, which included the results of more than 5000 soldiers with head injuries, was considered the most important ever written on war neurology at that time and was translated into English in 1918 (Wounds of the Skull and Brain; Their Clinical Forms and Medical and Surgical Treatment). In this book, de Martel detailed the fundamentals of skull injuries, classified the various craniocerebral lesions, recommended exploratory craniectomy for cranioencephalic injuries, recommended the removal of metal projectiles from the brain using a magnetic nail, and advocated for the prevention of infectious complications. Between the World Wars, de Martel undertook several developments for neurosurgery in France alongside neurologists Joseph Babinski and Clovis Vincent. Following France's entry into World War II on September 3, 1939, de Martel took over as head of the services of the American Hospital of Paris in Neuilly. He updated his work on war surgery with the new cases he personally treated. Together with Vincent, de Martel presented his new approach in "Le traitement des blessures du crâne pendant les opérations militaires" ("The treatment of skull injuries during military operations") on January 30, 1940, and published his own surgical results in April 1940 in "Plan d'un travail sur le traitement des plaies cranio-cérébrales de guerre" ("Work Plan on the Treatment of Cranio-Cerebral Wounds of War"), intended for battlefield surgeons. On June 14, 1940, the day German troops entered Paris, de Martel injected himself with a lethal dose of phenobarbital. Thierry de Martel played a central role in establishing modern neurosurgery in France. His patriotism led him to improve the management of wartime cranioencephalic injuries using his own experience acquired during World Wars I and II.

The legacy of Renaissance surgeon Giovanni Andrea Dalla Croce on the history of military surgery and neurosurgery.

Giovanni Andrea Dalla Croce was a Venetian physician who lived in the 16th century and was famous for his treatment of wounds, which was surprisingly modern. He was the military surgeon of the Venetian Republic's naval fleet. In 1537, he published the Chirurgiae universalis opus absolutum (The absolute work on universal surgery) in Latin, then expanded and translated into vernacular Italian and published in 1574 with the title Cirugia universale e perfetta di tutte le parti pertinenti all'ottimo chirurgo (Universal and perfect surgery of all the parts necessary for the optimal surgeon). This monumental work was a comprehensive handbook of surgery, medicine, and the treatment of many kinds of wounds with techniques to be used on the battlefield. It is also notable for the inclusion of illustrations of various weapons and projectiles, for the most comprehensive description and illustrations of surgical instruments at that time, and for the first illustrations of a surgeon performing trephination of the skull in an operating room. Dalla Croce also considered the writings of his surgical forebears in formulating his own ideas. Dalla Croce was a leader of traumatology, a universal surgeon who exemplified the erudite Renaissance man, and left a tremendous legacy to military surgery of the 16th century and beyond.

Serendipity and Observations in Functional Neurosurgery: From James Parkinson's Stroke to Hamani's & Lozano's Flashbacks.

BACKGROUND: Serendipity and observations have a noble tradition in medicine, including neurology, and are responsible for many medical treatments (carbamazepine for tic douloureux, amantadine for Parkinson's disease, gabapentin for restless legs…). We aimed at examining the contribution of serendipity and observations to functional neurosurgery. Scholarly publications relevant to the history of functional neurosurgery for movement and psychiatric disorders were reviewed, starting from the pre-stereotactic era. The documents were scrutinized with respect to indications for surgery, surgical methods, and brain targets, in view of determining whether serendipitous discoveries and other observations contributed to various functional neurosurgical procedures. SUMMARY: James Parkinson's observation that tremors disappeared in the arm of a person with shaking palsy after a hemiparetic stroke encouraged neurosurgeons in the first half of the 20th century to perform ablative procedures on central motor pathways. Following a lobotomy performed by Browder that extended too far medially in a psychiatric patient with coexisting Parkinson's disease (PD), it was noted that the Parkinsonian signs improved. This encouraged Russel Meyers to carry out open surgery on the caudate nucleus and basal ganglia in PD. Cooper introduced ligation of the anterior choroidal artery as a treatment for PD following a surgical accident during a pedunculotomy. Cooper later started to perform stereotactic surgery on the ventrolateral thalamus following the pathological finding that an intended pallidal lesion had in fact targeted the thalamus. Leksell discovered the ideal location of a pallidal lesion being in the posteroventral area empirically, long before the advent of the basal ganglia model of PD. Modern Deep Brain Stimulation (DBS) that started in the thalamus for tremor was the result of an observation by Benabid that intraoperative high-frequency stimulation during a thalamotomy reduced tremor. Both the discoveries of the anterior limbic subthalamic nucleus as a DBS target for OCD and the medial forebrain bundle as a DBS target for depression occurred by chance. Hamani and Lozano observed memory flashbacks in a patient who was undergoing DBS for obesity, which led to the discovery of the fornix as a potential DBS target for Alzheimer's disease. KEY MESSAGES: In the history of functional neurosurgery, serendipity and observations have resulted in discoveries of several procedures, brain targets for lesioning or DBS as well as new clinical surgical indications. In this era of neuromodulation, this technology should be exquisite in allowing potential serendipitous discoveries, provided that clinicians remain both observant and prepared.

Jean Talairach (1911-2007). An untold story of the pioneer of stereotactic and functional neurosurgery.

CONTEXT: The Department of neurosurgery of the Sainte-Anne Hospital hosted Jean Talairach who created and developed stereotactic neurosurgery in France. Despite numerous neurosurgical and neuroscientific achievements, little is known about the life of Jean Talairach. METHODS: Systematic screening of Sainte-Anne Hospital Museum, Henry Ey Library, and Bibliothèque Inter-Universitaire de Santé funds, and medical databases using the term "Jean Talairach". RESULTS: Jean Talairach started his medical career at the Sainte-Anne Hospital in 1942 as a psychiatrist and became a neurosurgeon due to his interest in stereotactic neurosurgery. During World War II, Jean Talairach joined the French Resistance in Paris, then the French First Army. Jean Talairach created an original and specific stereotactic methodology with appropriate stereotactic frame and tools and performed one of the first human stereotactic surgeries in 1948. He described the reference lines passing by the anterior and posterior commissures in 1952 and developed a tridimensional co-planar stereotactic atlas of the human brain. With the collaboration of Jean Bancaud, he created stereo-electroencephalography to investigate patients suffering from drug-resistant epilepsy. The "Sainte-Anne school" trained French and foreign stereotactic and functional neurosurgeons ensuring the spread of Jean Talairach's innovative ideas. Jean Talairach retired in 1980. CONCLUSION: Jean Talairach's achievements encapsulate the evolution of neurosurgery in France during the 20th century. He developed an original stereotactic methodology including a tridimensional stereotactic atlas of the human brain and a stereotactic frame. He created stereo-electroencephalography, which remains the gold-standard to investigate patients suffering from drug-resistant epilepsy.

Dr. Louise Eisenhardt's personal notes: how she and Dr. Cushing collected data and followed patients.

Dr. Louise Eisenhardt was one of the first neuropathologists and was responsible for the development of tumor diagnosis guidelines. This historical vignette reviews her previously unseen handwritten notes in which she describes methods used by her and Dr. Harvey Cushing to obtain patient follow-up data for their Brain Tumor Registry. Her description spans 50 years, using "every possible clue to be jumped upon in [their] clinical records and correspondence." Their follow-up was divided into two periods: early follow-up (1912-1932) and registry (1933-1961). During early follow-up, patients were asked to write to them on the anniversary of their operation. The foundation of the registry necessitated the use of "considerable effort on [their] part to gather up old threads" including renewed contact with patients after 15-20 years. Methods of follow-up included continued verbal and written correspondence with patients and "strong-arm methods," including use of the Fuller Brush man and the exhumation of a body. Drs. Eisenhardt and Cushing believed "every case was important in adding to our collective knowledge of various types of tumors particularly in relationship to life expectancies and suggesting improvement in surgical treatments." Dr. Eisenhardt's meticulous record keeping allows for insights into the first known outcomes-related tumor registry in neurosurgery.

Cranial Surgery in Italy During the Bronze Age.

Skull vault trepanation is a surgical practice that has been found in prehistoric human remains. We carried out a review of the literature on cranial trepanations performed during the Bronze Age in Italy. In total, 19 individuals, most of whom were adult males, with 33 trepanations have been reported, including a new specimen from the Italian Middle Bronze Age (1700-1400 BCE), found at Grotta della Monaca (Calabria). The evidence of cranial trepanations is geographically uneven across Italy, with the highest occurrence in Sardinia. Several trepanation techniques were applied in Italy during this period, where the drilling method was the most common solitary technique utilized. The survival rate of 79.3% in Bronze Age Italy suggests that trepanation was carried out with remarkable success. This analysis gives further insight into ancient human behavior and enhances our knowledge of surgical practices in antiquity, shedding light on the origins of neurosurgery.

Entre exiliados y nativos: la integración de saberes de españoles y mexicanos para el desarrollo de la neurología en México, 1935-1950 / Between exiled and native doctors: Spanish and Mexican knowledge integrating into the development of neurology in México, 1935-1950

Resumen Entre 1935 y 1950 aconteció la introducción y desarrollo de la neurología en México. Esto se dio por medio de dos vías: el arribo de los neurocientíficos españoles a México tras su exilio provocado por la Guerra Civil; y la presencia de médicos mexicanos que salieron a especializarse en neurocirugía a EEUU. Se discuten algunas posiciones historiográficas que hablan de la importancia de los españoles exiliados en este acontecer, pero que no han expuesto el relevante papel de los nativos en el surgimiento de la neurología mexicana. Se afirma la existencia de un proceso de integración de ambas partes, donde los nativos buscaron satisfacer necesidades asistenciales mientras que los exiliados tuvieron que encontrar y crear espacios dónde insertarse.

Abstract Between 1935 and 1950 the neurology was presented and developed in Mexico. It happened by two ways: the arrival of Spanish neuroscience researchers in Mexico exiled due the Civil War; and the presence of Mexican doctors that had specialized in neurosurgery in the United States. The article discusses historiographic points of view that stress the importance of the Spanish exiled doctors, but neglect the important role of native doctors in the emergence of Mexican neurology. It states that there was an integration process by both parts, where Mexicans tried to satisfy care needs while the Spanish had to find or create working spaces to belong to.

Legacy of Syriac-Aramaic Scholars in Transmitting Neurosurgical Knowledge Between Antiquity and the Middle Ages.

The link between ancient Greek medicine and the Arabic translation period in the 9th century cannot be understood without studying the contributions of Syriac scholars. With their mastery of Greek and the related Semitic languages of Syriac and Arabic, they initiated a scientific translation process with methods that prevail to this day. In this paper, we reviewed Hunayn Ibn Isshaq's Ten Treatises on the Eye to elucidate the original contributions of the Syriac physicians to the field of neurologic surgery. We analyzed the oldest known diagram of orbital anatomy along with Hunayn's genuine ideas on the optic nerve anatomy and pathology, optic chiasm, afferent pupillary reflex, and papilledema and venous congestion. We also reviewed the neurosurgical elements found in the Syriac Book of Medicines including the thought process in localizing neurologic deficits based on clinical experience and anatomic dissections and the earliest recorded description of brachial plexus pathology.