French Military Neurosurgery: At Home and Abroad.

The origins of military neurosurgery are closely linked to those of neurosurgery in France and more particularly in Paris. The history of the field starts with its origins by 2 men, Thierry de Martel and Clovis Vincent. The first note about the creation of military neurosurgery was in 1942, when Marcel David was reassigned from the Sainte Anne Hospital to practice at the Val-de-Grâce Military Hospital. David trained the first military neurosurgeon. The field of military neurosurgery was subsequently developed at the Val-de-Grâce Military Hospital, at Sainte Anne Military Teaching Hospital in Toulon in 1990 and then at Percy Military Teaching Hospital in 1996. Over 29 military neurosurgeons were trained in these institutions. Since 2000, French military neurosurgeons have been deployed from France in the Mobile Neurosurgical Unit. This Mobile Neurosurgical Unit represents 12% of all medical evacuation of casualties categorized as the high dependency level. Neurosurgeons were able to adapt to asymmetrical wars, such as in the Afghanistan campaign where they were deployed in the Role 3 medical treatment facility, and more recently in sub-Saharan conflicts where they were deployed in forward surgical roles. To manage the increasing craniocerebral war casualties in the forward surgical team, the French Military Health Service Academy established a training course referred to as the "Advanced Course for Deployment Surgery" providing neurosurgical damage control skills to general surgeons. Finally, military neurosurgery is reinventing itself to adapt to future conflicts through the enhancement of surgical practices via the addition of head, face, and neck surgeons.

Management of combat-sustained radial nerve injury during World War I: The case of Louis-Ferdinand Céline.

The radial nerve conveys sensory and motor information to and from the upper limb, and radial nerve injury can induce functional disability, as demonstrated by the case of the renowned French writer Louis-Ferdinand Céline (1894-1961), who sustained a gunshot injury to his right arm in October 1914. Radial nerve injuries treated during World War I inspired the publication of several medical handbooks and medical theses, such as that of the military surgeon Major Robert Bretton (1889-1956). The aim of this paper is, via Céline's injury, to explore the management of radial nerve injury during and since World War I. It is important to consider the historical perspective in order to improve radial nerve injury management so as to adapt to modern warfare.

Neurosurgical management of penetrating brain injury during World War I: A historical cohort.

During World War I, 25% of penetrating injuries were in the cephalic region. Major Henri Brodier described his surgical techniques in a book in which he reported every consecutive penetrating brain injury (PBI) that he operated on from August 1914 to July 1916. The aim was to collate his data and discuss significant differences in management between soldiers who survived and those who died. We conducted a retrospective survey that included every consecutive PBI patient operated on by Henri Brodier from August 1914 to April 1916 and recorded in his book. We reported medical and surgical management. Seventy-seven patients underwent trepanation by Henri Brodier for PBI. Regarding injury mechanism, 66 procedures (86%) were for shrapnel injury. Regarding location, 21 (30%) involved the whole convexity. Intracranial venous sinus wound was diagnosed intraoperatively in 11 patients (14%). Postoperatively, 7 patients (9%) had seizures, 5 (6%) had cerebral herniation, 3 (4%) had cerebral abscess, and 5 (6%) had meningitis. No patients with abscess or meningitis survived. No significant intergroup differences were found for injury mechanism or wound location, including the venous sinus. Extensive initial surgery with debridement must be prioritized. Infectious complications must not be neglected. We should not forget the lessons of the past when managing casualties in present-day and future conflicts.

The Origin of Surrealism: Rethinking Apollinaire's Penetrating Brain Injury with Current Knowledge Regarding White Matter Tracts.

The French poet Apollinaire enrolled in the French army during World War I. In 1916, he sustained a penetrating brain injury when a fragment of shrapnel pierced his helmet in the right temporal region. Neurosurgical techniques were at that time standardized to manage the significant number of war-related neurosurgical casualties. Apollinaire, who experienced transient fainting followed by left-sided hemiparesis 2 months after his trauma, underwent trepanation. The poet's personality and behavior changed dramatically after his trauma. These neurobehavioral changes, associated with preserved cognition and no other neurologic dysfunction, were later described as Apollinaire syndrome. These personality changes were accompanied by flourishing writing changes. Hence, 15 months after his penetrating brain injury, the poet introduced the term "surrealism" to the world in his play The Breasts of Tiresias, giving birth to a major movement that paved the way for the 20th century. Linguistic shifts such as phonologic and semantic word games were at the forefront of the narrative process of the play. Traumatic brain injury often leads to cognitive impairment. In the case of Apollinaire, if the ballistic trauma were also responsible for diffuse axonal injury, it could have also led to semantic and social cognition impairment, in addition to the neuropsychological disorders that had already been widely documented by his friends and family. The world will always remember Apollinaire's writing genius as deeply associated with the birth of surrealism. But what if the poet's new writing style was caused, at least in part, by the unexpected help of a lost shrapnel fragment?

Application of a Near-infrared Spectroscope by an Extreme Forward Medical Team for the Triage of Casualties With Traumatic Brain Injury.

BACKGROUND: During deployment of military medical teams similarly to prehospital practice, without immediate computed tomography scan access, identifying patients requiring neuro-specific care to manage pragmatic triage proves crucial. We assessed the contribution of this portable near-infrared spectroscope (NIRS) handheld device, Infrascanner Model 2000 (InfraScan Inc.; Philadelphia, PA), to screen patients suspected to require specific neurosurgical care. MATERIALS AND METHODS: This single-center retrospective analysis was based on the data from the medical records of the traumatic brain injured patients. We analyzed all the patients strictly over 18 years old presenting a clinical history of traumatic brain injury (TBI) with a Glasgow Coma Scale (GCS) < 15. RESULTS: Thirty-seven medical records of patients admitted for TBI met the inclusion criteria for our analysis. The median GCS was 9 [3-14]. Eight patients (21.6%) underwent neurosurgery and 25 (67.6%) required intensive care unit (ICU) admission, after initial assessment and resuscitation. The NIRS was the most sensible to detect intracranial hematoma (n = 21), intracranial hematoma leading to surgery (n = 8), and intracranial hematoma leading to admission in ICU (n = 25). Its negative predictive value was 100% regarding hematomas leading to surgery. False-positive results were encountered in 10 cases (27.0%). Excluding cases harboring confounding extracranial hematomas, parietal area was still the most represented (n = 3). CONCLUSION: The NIRS was relevant to detect hematoma leading to prompt surgery in our study. The lack of specificity in a nonselected cohort of patients underlines the need to associate simple clinical feature such as neurological deficit and NIRS results to perform rational triage.

Emergency Cranial Surgeries Without the Support of a Neurosurgeon: Experience of the French Military Surgeons.

INTRODUCTION: Unlike orthopedic or visceral surgeons, French military neurosurgeons are not permanently deployed on the conflict zone. Thus, craniocerebral war casualties are often managed by general surgeons in the mobile field surgical team. The objective of the study was to provide the feedback of French military surgeons who operated on craniocerebral injuries during their deployment in a role 2 surgical hospital without a neurosurgeon. MATERIALS AND METHODS: A cross-sectional survey was conducted by phone in March 2020, involving every military surgeon currently working in the French Military Training Hospitals, with an experience of cranial surgery without the support of a neurosurgeon during deployment. We strived to obtain contextual, clinical, radiological, and surgical data. RESULTS: A total of 33 cranial procedures involving 64 surgeons were reported from 1993 to 2018. A preoperative CT scan was not available in 18 patients (55%). Half of the procedures consisted in debridement of craniocerebral wounds (52%, n = 17), followed by decompressive craniectomies (30%, n = 10), craniotomy with hematoma evacuation (15%, n = 5), and finally one (3%) surgery with exploratory burr holes were performed. The 30-day survival rate was 52% (n = 17) and 50% (n = 10/20) among the patients who sustained severe traumatic brain injury. CONCLUSIONS: This survey demonstrates the feasibility and the plus-value of a neurosurgical damage control procedure performed on the field by a surgeon nonspecialized in cranial surgery. The stereotyped neurosurgical techniques used by the in-theater surgeon were learned during a specific predeployment training course. However, the use of a live telemedicine neurosurgical support seems indispensable and could benefit the general surgeon in strained resources setting.

Severe Trauma Patients Requiring Undelayable Combined Cranial and Extra-Cranial Surgery: A Proof-of-Concept Monocentric Study.

INTRODUCTION: To date, there is no evidence concerning the emergency surgical management of severe trauma patients (STP) with severe traumatic brain injury (STBI) presenting a life-threatening intracranial hematoma and a concomitant extra-cranial noncompressible active bleeding. Current guidelines recommend stopping the extra-cranial bleeding first. Nevertheless, the long-term outcome of STP with STBI mainly depends from intracranial lesions. Thus, we propose a combined damage-control surgical strategy aiming to reduce the time spent with intracranial hypertension and to hasten the admission in the intensive care unit. The main objective of the study is to evaluate the benefits of combined cranial and extra-cranial surgery of STP on the long-term outcome. MATERIALS AND METHODS: We retrospectively searched through the database of STBI of a level 1 trauma center facility (Sainte-Anne Military Teaching Hospital, Toulon, France) from 2007 until 2021 looking for patients who benefited from combined cranial and extra-cranial surgery in an acute setting. RESULTS: The research yielded 8 patients. The mean age was 35 years old (±14) and the male to female sex ratio was 1.7/1. The trauma mechanism was a fall in 50% of the cases and a traffic accident in 50% of the cases. The median Glasgow coma scale score was 8 (IQR 4) before intubation. The median Injury Severity Score was 41 (IQR 16). Seven patients (88%) presented hypovolemic shock upon admission. Six patients (75%) benefited from damage-control laparotomy among, whom 4 (67%) underwent hemostatic splenectomy. One patient benefited from drainage of tension pneumothorax, and one patient benefited from external fixator of multiple limb fractures. Seven patients (88%) benefited from decompressive craniectomy for acute subdural hematoma (5 patients) or major brain contusion (2 patients). One patient (12%) benefited from craniotomy for epidural hematoma. Three patients presented intraoperative profound hypovolemic shock. Six patients (75%) presented a favorable neurologic outcome with minor complications from extra-cranial surgeries and 2 patients died (25%). CONCLUSION: Performing combined life-saving cranial and extra-cranial surgery is feasible and safe as long as the trauma teams are trained according to the principles of damage control. It may be beneficial for the neurologic prognostic of STP with STBI requiring cranial and extra-cranial surgery.

Severe trauma patients requiring undelayable combined cranial and extracranial surgery: A scoping review of an emerging concept.

Objectives: Although patients suffering from severe traumatic brain injury (sTBI) and severe trauma patients (STP) have been extensively studied separately, there is scarce evidence concerning STP with concomitant sTBI. In particular, there are no guidelines regarding the emergency surgical management of patients presenting a concomitant life-threatening intracranial hematoma (ICH) and a life-threatening non-compressible extra-cranial hemorrhage (NCEH). Materials and Methods: A scoping review was conducted on Medline database from inception to September 2021. Results: The review yielded 138 articles among which 10 were retained in the quantitative analysis for a total of 2086 patients. Seven hundrer and eighty-seven patients presented concomitant sTBI and extra-cranial severe injuries. The mean age was 38.2 years-old and the male to female sex ratio was 2.8/1. Regarding the patients with concomitant cranial and extra-cranial injuries, the mean ISS was 32.1, and the mean AIS per organ were 4.0 for the head, 3.3 for the thorax, 2.9 for the abdomen and 2.7 for extremity. This review highlighted the following concepts: emergency peripheric osteosynthesis can be safely performed in patients with concomitant sTBI (grade C). Invasive intracranial pressure monitoring is mandatory during extra-cranial surgery in patients with sTBI (grade C). The outcome of STP with concomitant sTBI mainly depends on the seriousness of sTBI, independently from the presence of extra-cranial injuries (grade C). After exclusion of early-hospital mortality, the impact of extra-cranial injuries on mortality in patients with concomitant sTBI is uncertain (grade C). There are no recommendations regarding the combined surgical management of patients with concomitant ICH and NCEH (grade D). Conclusion: This review revealed the lack of evidence for the emergency surgical management of patients with concomitant ICH and NCEH. Hence, we introduce the concept of combined cranial and extra-cranial surgery. This damage-control surgical strategy aims to reduce the time spent with intracranial hypertension and to hasten the admission in the intensive care unit. Further studies are required to validate this concept in clinical practice.

Neurosurgery for intracranial meningioma in patients aged more than 80 years: benefits and rationale.

BACKGROUND: Elderly patients with symptomatic benign intracranial tumours such as meningioma pose particular problems in decision making. We report on the outcome, morbidity and mortality in patients aged over 80 years after undergoing cranial surgery for meningiomas. METHODS: In this retrospective study, 37 patients aged more than 80 years underwent surgery at our neurosurgery department. The Karnofsky Performance Scale (KPS) was used to assess functional status. The American Society of Anesthesiologists (ASA) classification system, the Geriatric Scoring System, the Clinical-Radiological Grading System and the Sex, Karnofsky, ASA, Location and Edema score were used to define clinical status and tumour characteristics. The Charlson Comorbidity Index and Clavien-Dindo classification scores reflected therapeutic morbidity. RESULTS: Preoperative KPS scores were generally higher than 60 (n = 32). Of the 37 patients, 24 (64.8%) were in ASA class I or II, and 27 (73.0%) had one or more comorbidities. The median length of follow-up was 80.0 months (range: 1-96 months). The 1-year mortality rate was 2.7% (n = 1). Tumour control was achieved in 33 patients. At discharge, KPS scores were improved in 21 patients (with an average gain of +18.1 ± 8.7), stable in 10 patients and poorer in 6 patients. KPS scores improved or were stable in patients with shorter lengths of hospital stay (15.5 ± 17.9 days vs 51.4 ± 25.4 days; p < 0.01), those with Clavien-Dindo scores lower than 2 (p < 0.01) and those with less favourable preoperative KPS scores (69.4 ± 10.9 vs 82.0 ± 11.0; p = 0.04). CONCLUSION: Historically, surgery for intracranial meningiomas in patients aged >80 years has been feasible; this series demonstrated decreasing rates of postoperative mortality. Functional benefit should be the main goal of surgery. Perioperative morbidity should be better assessed and predicted because it significantly influences functional outcomes.

Brain metastases in endometrial cancer: A systematic review of the surgical prognostic factors.

CONTEXT: Although endometrial cancer is the fourth most common malignancy in women, dissemination to the brain is an exceptional event in the course of the disease. The aim of this review is to determine the important surgical prognostic factors for patients with endometrial cancer metastatic to the brain. MATERIALS AND METHODS: Report of two cases. Medline database was used to conduct a systematic literature review from inception to December 2020 looking for English-language articles focused on brain metastases from endometrial cancer. RESULTS: The research yielded 108 articles, among which 23 articles were retained for a total of 87 patients. Mean age was 60 years-old ±11 at the time of diagnosis of endometrial cancer, and most of the tumors were aggressive (grade 3) with an advanced-stage disease (FIGO III-IV). At the time of diagnosis of cerebral disease, a single brain metastasis (p < 0.0001) and no extra-cerebral metastatic site (p = 0.0011) were significant good prognostic factors for the median overall survival. Surgical excision of brain metastasis followed by radiotherapy provided the longest median overall survival compared to radiotherapy and/or chemotherapy, and surgery alone (respectively 32, 5.4 and 4.8 months, p < 0.0001). An age of 60-year-old or less was not associated with a better prognosis. CONCLUSION: This review confirms that surgical excision followed by radiotherapy is a reliable option in patients with a single brain metastasis from endometrial cancer and no extra-cerebral metastatic site. This work could help to adapt the Graded Prognostic Assessment for brain metastases in endometrial cancer.

Spontaneous Acute Subdural Hematoma: Beware of the Aneurysm.

Spontaneous acute subdural hematoma should raise clinical suspicion for underlying pathology, the most common etiology being a ruptured aneurysm. Through this case report, our team developed a clinical decision-making tool to help physicians decide when it is necessary to order an acute subdural hematoma to assess for ruptured aneurysm.

How I do it: supra-tentorial unilateral decompressive craniectomy.

BACKGROUND: Decompressive craniectomy is a surgical way to treat intracranial hypertension, by removing a large flap of skull bone. METHOD: We report the case of a 48 years old right-handed man presenting an acute ischaemic stroke of all the right sylvian artery area, with rapid clinic deterioration then coma. Severe intracranial hypertension was confirmed by transcranial Doppler. In emergency, we decided to perform a right-side decompressive craniectomy. CONCLUSION: Six months later, he is in rehabilitation with "only" a left hemiplegia and a very good relational life. His modified Rankin score is 3. Decompressive craniectomy saved this patient's life, that is why we think this surgical technique must be explained and mastered.

A summer wave of vertebral fractures: the "deck-slap" injury.

BACKGROUND: Every summer, several patients who suffer from vertebral fractures are hospitalized at the Sainte-Anne Military Hospital after going on a boat trip around the French Riviera. The uniqueness of these fractures lies in their mechanism of injury, called the "deck-slap" injury. The aim of this study is to describe the characteristics of the "deck-slap" injury. METHODS: The data of 26 vertebral fractures that occurred during boat trips between January 2010 and September 2017 were collected and analyzed. RESULTS: The mechanism of injury observed was similar for every patient. Patients sitting on the front of the boat, or bow, (77% of cases, n = 20); patients being on a rigid-inflatable boat (65% of cases, n = 17); and when the sea state was calm (62% of cases, n = 16). The patients were bounced up in the air because of a strong wave and landed in a sitting position. The affected population was young (mean age of 42.5 years) and women were the main victims (sex ratio of 0.3). The lesion topography was found near the thoracolumbar junction in each case. It was always a vertebral body compression. Twenty-three percent of them (n = 6) suffered from neurologic complications. CONCLUSION: This type of fractures, frequently encountered during the summer, has not previously been described in the literature, yet is a relevant cause of hospital admissions to the emergency departments of the south of France. A better knowledge of this mechanism would provide a more efficient approach to prevention measures that should be imposed to potential boat passengers.

Acute neurosurgical management of traumatic brain injury and spinal cord injury in French armed forces during deployment.

This article aims to describe the French concept regarding combat casualty neurosurgical care from the theater of operations to a homeland hospital. French military neurosurgeons are not routinely deployed to all combat zones. As a consequence, general surgeons initially treat neurosurgical wounds. The principle of this medical support is based on damage control. It is aimed at controlling intracranial hypertension spikes when neuromonitoring is lacking in resource-limited settings. Neurosurgical damage control permits a medevac that is as safe as can be expected from a conflict zone to a homeland medical treatment facility. French military neurosurgeons can occasionally be deployed within an airborne team to treat a military casualty or to complete a neurosurgical procedure performed by a general surgeon in theaters of operation. All surgeons regardless of their specialty must know neurosurgical damage control. General surgeons must undergo the required training in order for them to perform this neurosurgical technique.

Fatal acute disseminated encephalomyelitis (ADEM) after third ventricle colloid cyst resection with ultrasonic aspirator during neuroendoscopic procedure.

We present the case of a patient who died of a fatal meningoencephalitis after removal of a third ventricle colloid cyst. Postoperative clinical and iconographic evolution let us think about an acute disseminated encephalomyelitis probably due to cerebrospinal fluid contamination by inflammatory proteins contained in the colloid cyst. This case raises the question of a possibility of colloid cyst content spraying while using an ultrasonic aspiration device.