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David G. Kline

It has been said of Silas Weir Mitchell (1829–1914) that as a young man he was first among the physiologists of his day, in middle age first among physicians, and as an older man, one of the most noted novelists of his country. Mitchell's novels were written in his later life as a means to avoid boredom during lengthy summer vacations that were the norm for that time among the affluent members of Philadelphia society. These novels were criticized by some because of poor plots, which in some instances failed to move along, or for text that offered a stereotyped depiction of genteel society and the effects that war or personal disaster had on the characters' behavior The criticism came despite the fact that all critics agreed that Mitchell's portrayals of psychopathology in his fictional characters was unique and accurate. However, in his 30s, Mitchell had written and by chance had published a fictional short story that not only transcended such criticisms but became immensely popular.

“The Strange Case of George Dedlow” portrays a union officer who was not a physician but who had some medical background and who sustained a series of war wounds leading to severe nerve pain, the author's first description of causalgia, multiple amputations, and the psychological as well as physical symptoms of phantom limb syndrome. The protagonist tells of his torments in the first person in a very engaging fashion. Thus, long before he began writing his, at that time, acclaimed novels in the 1880s, Mitchell wrote a piece of fiction that combines accurate and very important medical observations with fiction of great historical interest. The following rendering of this now classic short story includes selected quotes and some interpretation and is perhaps appropriate for this year, 2 years after the centenary year of his death in 1914.

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David G. Kline

✓ Many gunshot wounds (GSW's) to the brachial plexus do not improve spontaneously with time and are therefore candidates for surgery. Over an 18-year period, 141 patients with GSW's were evaluated, 90 of whom were operated on; 75 of the surgical cases were followed for 2 years or more. Thirty operative patients had initial vascular repair, while eight required thoracotomies. Total plexus palsy was present in 19 of those selected for operation. The average interval between injury and operation was 17 weeks. Six patients required early operation for an expanding aneurysm with progressive neural loss. Persistent complete loss of function in the distribution of one or more elements and/or noncausalgic pain not managed by medications provided the major operative indications. Four patients required sympathectomies for causalgia.

Of 166 lesions in continuity believed to be complete, based on clinical examination and electromyography, 48 with preserved intraoperative nerve action potentials (NAP's) were spared resection or were treated with a split repair with excellent eventual results on a weighted grading system. By comparison, only seven of 55 elements believed to have incomplete loss or to be recovering did not have NAP's and required repair. Fifty-three of 98 lesions repaired by grafts and 18 of 26 wounds with suture repair recovered to a Grade 3 level or better. Most elements were in continuity but 14 were found “blown apart” and required repair, usually by grafting.

The best outcome was achieved with upper trunk and lateral and posterior cord lesions, but recovery occurred with some C-7 to middle trunk and medial cord to median repairs. Results with lower trunk and most medial cord lesions were poor unless early regeneration was proved by operative NAP's, in which case either neurolysis or split repair could be performed. Surgery is warranted for selected GSW's to the plexus.

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David G. Kline

✓On August 29, 2005, a hurricane named Katrina struck the Gulf Coast. Many feared the consequences of such a storm, but very few believed that it could ever happen. This article is a narrative written shortly after the evacuation of patients and personnel from the flooded Charity Hospital.

The days at Charity hospital were hot and humid following Katrina, and as time passed the air was permeated by a stench that was inescapable. Rendering care to patients without electricity, and thus light and air conditioning, with a temperature in the 90°s and no running water was a challenge. Trying to cool patients with central fever and providing adequate ventilation for unconscious patients was extremely difficult. Without elevators, climbs up to and down from the 14th floor—where the author and his colleagues had their sleeping rooms—and the 12th (surgical intensive care unit [ICU]), seventh (neuro ICU and step-down units), and sixth (medical ICU) floors were tedious. The descent to check the emergency department and obtain a closer look at flooding in the streets around the hospital, which maintained a 4- to 5-foot water level, became prohibitive because of the contemplation of the necessary return ascent.

There were 21 patients, mostly neurosurgical, in the neuro ICU and step-down units and wards. This is their story.

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Daniel H. Kim and David G. Kline

✓ Seventy-eight traumatic neuropathies were seen in 94 patients with femoral nerve lesions; 54 of these were operated on because of persistent complete functional loss and/or pain. The most common mechanism of injury to the femoral nerve was iatrogenic due to inguinal herniorrhaphy, total hip replacement, intraabdominal vascular or gynecological operation, and, less commonly, appendectomy, lumbar sympathectomy, and laparoscopic procedures. Femoral nerve injuries also resulted from penetrating gunshot and stab wounds, laceration by glass, and stretch/contusive injuries associated with pelvic fractures. There were no signs of clinical or electrical recovery in 45 of 78 patients with traumatic nerve injuries. These and other partial injuries associated with pain were explored and evaluated by intraoperative nerve stimulation and recording of nerve action potentials (NAPs).

Despite complete loss of nerve function preoperatively, 13 patients had recordable NAPs and underwent neurolysis; each recovered function to at least a Grade 3 level. Twenty-seven patients had sural graft repairs performed with graft lengths varying from 2.5 to 14 cm. Most patients had some nerve regeneration and regained function to Grade 3 to 4 levels by 2 years postoperatively. Four of five patients with suture repairs recovered to Grade 3 or better within 2 years postoperatively. Despite a proximal pelvic level for most of these injuries and, as a result, lengthy graft repairs, recovery of some useful function was the rule rather than the exception. Tumors involved the femoral nerve in 16 patients and included eight neurofibromas, four schwannomas, one neurogenic sarcoma, two ganglion cysts, and one leiomyosarcoma. All tumors were treated surgically and most were removed successfully.

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David G. Kline and Daniel H. Kim

Object. The purpose of this paper was to analyze outcomes in patients at the Louisiana State University Health Sciences Center (LSUHSC) who presented with contusion—stretch injuries to the axillary nerve. These injuries resulted from shoulder injury either with or without fracture/dislocation. Although recovery of deltoid function can occur spontaneously, this was not always the case.

Methods. Severe deficits persisting for several months led the patients to undergo surgery. Operative categories included isolated axillary palsy (56 procedures), combined axillary and suprascapular palsies (11 procedures), axillary and radial palsies (14 procedures), and axillary palsy with another deficit, usually infraclavicular plexus loss (20 procedures). Deltoid function was evaluated pre- and postoperatively by applying the LSUHSC grading system. An anterior infraclavicular approach was usually followed during surgery, but in three patients an additional posterior approach was used.

Axillary lesions usually began in the proximal portion of the posterior cord. Although several patients had distraction of the nerve, lesions in continuity were found in more than 90% of cases. Intraoperative nerve action potential (NAP) recordings were performed to determine the need for resection. Most repairs were made using grafts, although in three patients with relatively focal lesions suture was used.

When an NAP was recorded across the lesion and neurolysis was performed, recovery was judged to be a mean Grade 4 according to the LSUHSC in 30 cases. Recovery following suture repairs was a mean Grade 3.8, whereas recovery after 66 graft repairs was a mean Grade 3.7. In cases in which suprascapular palsies were associated with axillary injuries, the former recovered but the latter did not necessarily do so without surgery. If the radial nerve was also injured, recovery of the triceps and brachioradialis muscles and wrist extension was usually obtained, but it was far more difficult to reverse the loss of finger and thumb extension. Although few in number, complications did occur and they are important.

Conclusions. Operative exploration of axillary contusion—stretch lesions is worthwhile in carefully selected cases. If indicated by inspection and intraoperative electrical studies, nerve repair can lead to useful function.

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Raymond E. Dahl and David G. Kline

✓ Arteriovenous malformations located within cerebral parenchyma are usually supplied by intracranial vessels. An extracranial blood supply to these lesions is rare. The authors report their experience with two such cases and discuss the 21 comparable reports.

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David G. Kline and Stephen Mahaley Jr.

✓ In recent years, one-half of the 23 recognized specialty boards in medicine have begun formally to recognize subspecialization with some type of certification process. One such board, the American Board of Internal Medicine, examines and certifies in 11 subspecialty areas while the American Board of Pathology does so in nine, the American Board of Pediatrics in eight, the American Board of Obstetrics and Gynecology in four, and the American Board of General Surgery in three. Arguments for and against similar recognition of subspecialization within neurosurgery are reviewed. The present position of other specialties and their boards regarding this sensitive issue is summarized, as well as their certification structure. The various pathways available to certifying boards for recognition of subspecialization are also presented.

The American Board of Neurological Surgery (ABNS) has approved a subspecialty certificate called a “certificate of Special Qualification in Critical Care Medicine.” This is a subspecialty that is longitudinally oriented, touching on a number of other specialties in addition to neurosurgery, and thus differs from a vertical subspecialty such as Pediatric Neurosurgery or Cerebrovascular Neurosurgery. The background for development of such a certificate and the current requirements for obtaining it are reviewed. At the present time, the ABNS opposes the possible fragmentation of neurosurgery by offering certification in multiple subspecialty areas. Nonetheless, the current trend in medicine as a whole is in the direction of such subspecialization and its formal recognition. Increasing numbers of neurosurgeons tend to concentrate all or a good deal of their professional efforts in a specific area. Thus, organized neurosurgery must continue to consider methods for subspecialty recognition.

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Progression of partial experimental injury to peripheral nerve

Part 2: Light and electron microscopic studies

Alan R. Hudson and David G. Kline

✓ Biopsies from partially lacerated nerves were taken at the sites of proximal stimulus, laceration, and distal recording, and from stimuli and recording sites of control nerves. Electron microscopic examination of the partially lacerated major fasciculus revealed three zones of injury. The laceration zone showed neurotemetic changes, the adjacent or intermediate zone, partial degeneration, and the zone most peripheral to the laceration, changes in ground substance. Progression of the original injury is apparently due to ongoing changes in the intermediate and peripheral zones while much of the relative early recovery is due to reversal of changes in these zones. Regeneration through the laceration or neurotemetic zone is limited but does account for a small amount of late recovery of function.

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Joseph Nadell and David G. Kline

✓ Instead of discarding bone as in past practice with depressed skull fractures, fragments were soaked in Betadine, trimmed, reinserted into the skull defect, and covered with flaps of pericranium, muscle, or fascia. Of the 110 patients who had bone replaced, 65 had frontal fractures, which in 33 involved the frontal sinus, cribriform plate, or orbital rim. Fractures involving sinuses were treated by exenterating the sinus and packing it with muscle. The frontal and orbital rim region were reconstructed whenever possible with a mosaic of replaced bone. There were no deaths due to the minimal complications from the procedure. Despite severely macerated, contaminated, and in several instances, infected scalp wounds, most bone fragments have survived, and cranial defects have gradually filled with new bone. The authors believe that immediate bone replacement for depressed frontal fractures with or without orbital, sinus, or cribriform plate involvement is both practical and safe.