Gunshot injuries of the spine

Civilian ballistic spinal cord injuries versus blunt trauma: comparative analysis of clinical characteristics, management, and outcomes

BACKGROUND CONTEXT

There are no current guidelines for the management of civilian gunshot wound injuries (GSW) to the spine and patient management often relies on algorithms derived from blunt trauma (BT). However, spinal cord injury due to GSW or blunt trauma mechanism may have significantly different clinical presentation, management, and outcomes. To ensure improved and evidence-based treatment, we need to understand the outcome determining characteristics of civilian GSW to the spine and identify the differences to the well-studied BT.

PURPOSE

The aim of this study was to compare clinical characteristics, neurological deficit, management strategies, and mortality associated with GSW to the spine versus BT.

DESIGN

Retrospective single-center analysis.

PATIENT SAMPLE

One thousand nine hundred thirty-nine unique patients admitted to a level 1 trauma center with spinal cord injuries due to GSW or BT between the years 2003-2022.

OUTCOME MEASURES

Primary outcome measure was the progression in American Spinal Injury Association (ASIA) motor score.

METHODS

Clinical characteristics were compared followed by age-matched analysis (<45years) of neurological injury, the need for surgery, neurological outcomes and mortality. Stratification by neurological injury allowed for more homogenous subgroups for outcome analysis.

RESULTS

Of the 1939 patients with spinal cord injury, 566 were included in GSW group, and 1373 patients in BT group. Most patients in the GSW group were males (94.9% GSW vs 83.5% BT; p<.001) and younger (28.2 (range 13-62) years vs 37.9, (range 12-91) years, p<.001). The age-matched dataset comprised 1536 patients, with 540 in GSW group, and 996 in BT group. There were significantly more complete neurological injuries at admission in GSW group compared with BT (63.5% GSW vs 34.4% BT, p<.001). The ASIA motor Score at admission was significantly lower in GSW group (p<.001), and changed without significant difference between the groups from admission to discharge (p<.001, p=.222). Subgroup analysis based on spinal cord injury showed that a higher proportion of patients with incomplete injuries improved neurologically, opposed to complete injuries, with significantly more patients improving in GSW group compared to BT (incomplete 58.9% GSW vs 44.3% BT, p<.001). Likewise, a higher proportion of paraplegic patients improved, opposed to quadriplegic patients, and in the paraplegic subgroup GSW patients improved rather than BT (paraplegic 65.1% GSW vs 35.3%BT, p<.001). In GSW group significantly less patients were managed operatively compared to BT group (12.2% GSW vs 76.8% BT, p<.001). Most surgeries were bullet removals (81,4%) and involved the lumbar spine: 38.6% lumbar surgeries (of all GSW surgeries) and 31.4% surgery rate of all lumbar GSW patients. There was no significant difference in ASIA motor and sensory score improvement between patients who underwent surgery for bullet removal compared to nonoperatively managed patients in GSW group (p=.199). The incidence rate of surgery showed a downwards trend over the study period. GSW group showed significantly less complications than BT group (22.8% GSW vs 27.0% BT, p<.001). There was no significant difference in mortality rates (p≥.289).

CONCLUSION

To our knowledge, this is the largest single-center dataset of civilian ballistic spinal cord injuries compared to BT. GSW affect mostly young males and result in significantly more severe, complete neurologic injuries compared with BT at similar mortality rates. Nevertheless, the present data suggest a greater potential for neurological improvement for paraplegic patients and incomplete injuries in GSW group. Patients with spinal cord injuries due to GSW undergo surgery less frequently compared to BT. Operated GSW cases primarily involved the lumbar spine. This study revealed differences between spinal cord injuries due to GSW and BT. In clinical application, this means that guidelines based on BT may not directly be transferable to civilian ballistic spinal cord injuries.

The use of human tissue surrogates in anatomical modeling for gunshot wounds simulations: an overview about "how to do" experimental terminal ballistics

Human tissue simulating materials are currently used in scientific research mainly because they help to avoid possible ethical issues, unlike what happens with studies involving live animals and/or human cadavers. The use of ballistic gelatin as a human soft tissue surrogate stands out, although other types of materials can be used, including polyurethane and polydimethylsiloxane in the simulation of bones and skin respectively, not to mention some computational models that completely replace the physical use of surrogate models for gunshot wound simulation. The use of human tissue surrogates can be useful in reconstructing the dynamics of a crime scene when important forensic traces cannot be found. In the absence of projectiles but in possession of the possible firearm used in the crime, for example, it is possible to verify whether the weapon in question actually fired the fatal gunshot by comparing the injury found on the victim with the injury produced on the simulant material that best represents the anatomical area impacted, as indicated in the literature. Thus, scientific advances in experimental research in terminal ballistics with tissue surrogates can positively impact applied forensic sciences in the search for better technical assistance to the justice system in solving criminal situations.

An unusual case of gunshot injury to the spine

An eighteen-year-old male was brought with a gunshot to the right thorax. There was reduced air entry on the right chest, and the patient had AIS A neurology. However, plain radiographs of the spine were normal. CT of the chest revealed the trajectory of the bullet, which entered through the T7 right neural foramen, transected the cord, and exited the left foramen with minimal osteoligamentous disruption. The patient was managed conservatively, and once his respiratory function recovered, he underwent rehabilitation. This is the first report describing a low-velocity gunshot injury, causing cord injury without significant osteoligamentous disruption.

Multi-institutional review of characteristics and management of gunshot wounds to the spine

BACKGROUND CONTEXT

Gunshot wounds (GSWs) to the vertebral column represent an important cause of morbidity and mortality in the United States, constituting approximately 20% of all spinal injuries. The management of these injuries is an understudied and controversial topic, given its heterogeneity and lack of follow-up data.

PURPOSE

To characterize the management and follow-up of GSWs to the spine.

STUDY DESIGN/SETTING

A multi-institutional retrospective review of the experience of two urban Level 1 trauma centers.

PATIENT SAMPLE

Patients with GSWs to the spine between 2010-2021.

OUTCOME MEASURES

Measures included work status, follow-up healthcare utilization, and pain management were collected.

METHODS

Charts were reviewed for demographics, injury characteristics, surgery and medical management, and follow-up. Statistical analysis included T-tests and ANOVA for comparisons of continuous variables and chi-square testing for categorical variables. All statistics were performed on SPSS v24 (IBM, Armonk, NY).

RESULTS

A total of 271 patients were included for analysis. The average age was 28 years old, 82.7% of patients were black, 90% were male, and 76.4% had Medicare/Medicaid. The thoracic spine (35%) was most commonly injured followed by lumbar (33.9%) and cervical (25.6%). Cervical GSW was associated with higher mortality (p<.001); 8.7% of patients developed subsequent osteomyelitis/discitis, 71.3% received prophylactic antibiotics, and 56.1% of cervical GSW had a confirmed vertebral or carotid artery injury. ASIA scores at presentation were most commonly A (26.9%), D (20.7%), or E (19.6%), followed by C (7.4%) and B (6.6%). 18.8% of patients were unable to be assessed at presentation. ASIA score declined in only 2 patients, while 15.5% improved over their hospital stay. Those who improved were more likely to have ASIA B injury (p<.001). Overall, 9.2% of patients underwent spinal surgery. Of these, 33% presented as ASIA A, 21% as ASIA B, 29% as ASIA C, and 13% as ASIA D. Surgery was not associated with an improvement in ASIA score.

CONCLUSIONS

Given the ubiquitous and heterogeneous experience with GSWs to the spine, rigorous attempts should be made to define this population and its clinical and surgical outcomes. Here, we present an analysis of 11 years of patients presenting to two large trauma centers to elucidate patterns in presentation, management, and follow-up. We highlight that GSWs to the cervical spine are most often seen in young black male patients. They were associated with high mortality and high rates of injury to vertebral arteries and that surgical intervention did not alter rates of discitis/osteomyelitis or propensity for neurologic recovery; moreover, there was no incidence of delayed spinal instability in the study population.

Spinal gunshot wounds: A retrospective, multicenter, cohort study

INTRODUCTION AND OBJECTIVE

To describe the demographic and clinical characteristics and treatment of patients with spinal gunshot wounds across Latin America.

MATERIAL AND METHODS

Retrospective, multicenter cohort study of patients treated for gunshot wounds to the spine spanning 12 institutions across Latin America between January 2015 and January 2022. Demographic and clinical data were recorded, including the time of injury, initial assessment, characteristics of the vertebral gunshot injury, and treatment.

RESULTS

Data on 423 patients with spinal gunshot injuries were extracted from institutions in Mexico (82%), Argentina, Brazil, Colombia, and Venezuela. Patients were predominantly male civilians in low-risk-of-violence professions, and of lower/middle social status, and a sizeable majority of gunshots were from low-energy firearms. Vertebral injuries mainly affected the thoracic and lumbar spine. Neurological injury was documented in n=320 (76%) patients, with spinal cord injuries in 269 (63%). Treatment was largely conservative, with just 90 (21%) patients treated surgically, principally using posterior open midline approach to the spine (n=79; 87%). Injury features distinguishing surgical from non-surgical cases were neurological compromise (p=0.004), canal compromise (p<0.001), dirty wounds (p<0.001), bullet or bone fragment remains in the spinal canal (p<0.001) and injury pattern (p<0.001). After a multivariate analysis through a binary logistic regression model, the aforementioned variables remained statistically significant except neurological compromise.

CONCLUSIONS

In this multicenter study of spinal gunshot victims, most were treated non-surgically, despite neurological injury in 76% and spinal injury in 63% of patients.

Spinal gunshot wounds: A retrospective, multicenter, cohort study

INTRODUCTION AND OBJECTIVE

To describe the demographic and clinical characteristics and treatment of patients with spinal gunshot wounds across Latin America.

MATERIAL AND METHODS

Retrospective, multicenter cohort study of patients treated for gunshot wounds to the spine spanning 12 institutions across Latin America between January 2015 and January 2022. Demographic and clinical data were recorded, including the time of injury, initial assessment, characteristics of the vertebral gunshot injury, and treatment.

RESULTS

Data on 423 patients with spinal gunshot injuries were extracted from institutions in Mexico (82%), Argentina, Brazil, Colombia, and Venezuela. Patients were predominantly male civilians in low-risk-of-violence professions, and of lower/middle social status, and a sizeable majority of gunshots were from low-energy firearms. Vertebral injuries mainly affected the thoracic and lumbar spine. Neurological injury was documented in 320 (76%) patients, with spinal cord injuries in 269 (63%). Treatment was largely conservative, with just 90 (21%) patients treated surgically, principally using posterior open midline approach to the spine (79; 87%). Injury features distinguishing surgical from non-surgical cases were neurological compromise (P = 0.004), canal compromise (P < 0.001), dirty wounds (P < 0.001), bullet or bone fragment remains in the spinal canal (P < 0.001) and injury pattern (P < 0.001). After a multivariate analysis through a binary logistic regression model, the aforementioned variables remained statistically significant except neurological compromise.

CONCLUSIONS

In this multicenter study of spinal gunshot victims, most were treated non-surgically, despite neurological injury in 76% and spinal injury in 63% of patients.

Predicting early complications in patients with spinal gunshot wounds: A multicenter study

Introduction

There is a wide variation in the clinical presentation of spinal gunshot wounds ranging from isolated minor stable fractures to extremely severe injuries with catastrophic neurological damage.

Research question

we aim to analyze the risk factors for early complications and impact of surgical treatment in patients with spinal gunshot wounds.

Material and methods

This is a multicentre retrospective case-control study to compare patients with spinal gunshot wounds who had early complications with those who did not. The following matching criteria were used: sex (1:1), injury level (1:1) and age (±5 years). Univariate and multivariate analyses were performed using logistic regression.

Results

Results: Among 387 patients, 36.9 % registered early complications, being persistent pain (n = 32; 15 %), sepsis/septic shock (n = 28; 13 %), pneumonia (n = 27; 13 %) and neurogenic bladder (n = 27; 12 %) the most frequently reported. After case-control matched analysis, we obtained 133 patients who suffered early complications (cases) and 133 patients who did not as control group, not differing significantly in sex (p = 1000), age (p = 0,535) and injury level (p = 1000), while the 35 % of complications group required surgical treatment versus 15 % of the non-complication group (p < 0.001). On multivariable analysis, significant predictors of complications were surgical treatment for spinal injury (OR = 3.50, 95 % CI = 1.68-7.30), dirty wound (3.32, 1.50-7.34), GCS ≤8 (3.56, 1.17-10.79), hemodynamic instability (2.29, 1.07-4.88), and multiple bullets (1.97, 1.05-3.67).

Discussion and conclusion

Spinal gunshot wounds are associated with a high risk of early complications, especially when spinal surgery is required, and among patients with dirty wound, low level of consciousness, hemodynamic instability, and multiple bullets.

Firearm Injuries to the Wrist and Hand in Children and Adults: An Epidemiologic Study

BACKGROUND

Gunshot wounds (GSWs) to the wrist and hand are a major health and economic burden in the United States. There are few studies examining the circumstances and epidemiological factors surrounding these injuries. This study assesses the epidemiological factors, as well as the shooting circumstances, injury details, and surgical management of wrist and hand GSWs in children and adults.

METHODS

Medical records and radiographs were reviewed for all patients with ballistic injury to the wrist or hand treated at an urban academic level 1 trauma center from 2016 to 2019. Fisher exact and Pearson χ2 tests were used to assess differences between groups.

RESULTS

Two hundred forty-nine victims (29 children, 220 adults) with complete documentation were identified. Among 180 victims with known shooting circumstances, 132 (70%) were shot by another person and 110 (65%) were injured by intentional gunfire. Eighty-seven victims (35%) suffered a concurrent GSW to another body region. Metacarpal fracture was the most commonly diagnosed bony injury (37%), followed by proximal phalanx fracture (25%). One hundred twenty-nine victims (52%) underwent surgery following their injuries. Nerve discontinuity was diagnosed in 27 victims (11%), while 20 victims (8%) had vascular disruption. There was no significant difference between children and adult victims' type of fracture, concurrent injuries, rates of surgery, or in the most common fracture fixation method.

CONCLUSIONS

Most wrist and hand GSW victims were injured due to intentional, non-self-inflicted gunfire. Most patients present with hand fractures, and fortunately, nerve and vascular disruptions are uncommon.

Brown-Séquard syndrome caused by multiple knife trauma gunshot with late debridement: Two cases report and literature review

INTRODUCTION AND IMPORTANCE

Brown-Séquard syndrome (BSS) is a rare syndrome consequence of interruption in the spinal cord following traumatic or non-traumatic injuries. Although, based on the previous literature, BSS has a good prognosis, some reports do not complete recovery following BSS.

CASES PRESENTATION

In this current survey, we present two aggressive BSSs with complete recovery. One case involved a man aged 23 years without any underlying disease with multiple traumas with a knife who was transferred to the level 1 trauma center knife. Case two was a man 36 years with a gun shutting in C6 level.

CLINICAL DISCUSSION

C5 total laminectomy and C4 and C6 partial laminectomy were done due to the sharp knife. Three months later, the patient achieved full recovery. After C6 total laminectomy in case 2, the patient was discharged without defect.

CONCLUSION

Incomplete spinal cord injuries are challenging to diagnose and treat. Due to esophageal rupture and late debridement, full recovery was not expected. Despite neurological impairments, full recovery was achieved over three months in two cases. Also, many factors can aggravate the initial trauma in gunshot spine injury patients.

[Endoscopic treatment of mine-explosive spine injuries: 3 clinical cases and literature review]

Modern warfare is characterized by common mine-explosive injuries. The last ones are accompanied by multiple injuries, large area of damage and severe clinical status of victims.

OBJECTIVE

To demonstrate treatment of mine-explosive spinal injuries using modern minimally invasive endoscopic techniques.

MATERIAL AND METHODS

The authors present 3 victims with various mine-explosive injuries. Endoscopic removal of fragments from the lumbar and cervical spine was successful in all cases.

DISCUSSION

Most of victims with injuries of the spine and spinal cord do not require urgent surgery and can underwent surgical treatment after clinical stabilization. At the same time, minimally invasive techniques provide surgical treatment with minimal risk and earlier rehabilitation, as well as reduce the risk of infectious complications associated with foreign bodies.

CONCLUSION

Careful selection of patients for spinal video endoscopy will ensure positive outcomes. Minimization of iatrogenic postoperative injuries is especially important in patients with combined trauma. However, well-experienced surgeons should perform these procedures at the stage of specialized medical care.

Successful Removal of a Bullet from the Spinal Canal of a GSW Victim in the Level of L5: Case Report

INTRODUCTION AND IMPORTANCE

Gunshot wounds (GSWs), for increasing violence in urban areas globally and especially among the young population, have been significant causes of morbidity and mortality. These are the most common cause of spinal cord injuries, followed by traffic accidents. The priority of the therapeutic team is to save the victim and then minimise the permanent neural deficits. The indications for lumbosacral decompressive spinal surgery have remained challenging.

CASE PRESENTATION

A 25-year-old man victim of a gunshot in his left flank presented to the emergency department in hemodynamic shock and lethargy status. Resuscitating with fluids, he underwent damage control surgery (DCS). Sources of 2.5 l of intra-abdominal blood were detected of multiple intestinal and mesentery perforations beside the left ureter complete cut. The left psoas muscle was through and through perforated, too, and the bullet was stuck between the vertebrae. On the fifth day after DCS, the bullet surgical removal of the bullet was done in which L2-S1 laminectomy approaching the crushed Conus terminalis was completed. After the operation, his left foot drop and walking ability were improved.

CLINICAL DISCUSSION

Surgical treatment for gunshot wounds in the spinal column is controversial, but the emphasis is on providing advanced trauma life support. Definite treatment of such lesions mainly focuses on maintaining spinal stability, decreasing neurologic deficits as much as possible, and preventing complications.

CONCLUSION

A patient indicates neurological surgery who is young with incomplete or progressive neurology deficits, unstable spine, or complete injury with persistent neural compression.

Gunshot Wounds: Ballistics, Pathology, and Treatment Recommendations, with a Focus on Retained Bullets

As the epidemic of gunshot injuries and firearm fatalities continues to proliferate in the United States, knowledge regarding gunshot wound (GSW) injury and management is increasingly relevant to health-care providers. Unfortunately, existing guidelines are largely outdated, written in a time that high-velocity weapons and deforming bullets were chiefly restricted to military use. Advances in firearm technology and increased accessibility of military grade firearms to civilians has exacerbated the nature of domestic GSW injury and complicated clinical decision-making, as these weapons are associated with increased tissue damage and often result in retained bullets. Currently, there is a lack of literature addressing recent advances in the field of projectile-related trauma, specifically injuries with retained bullets. This review aims to aggregate the available yet dispersed findings regarding ballistics, GSW etiology, and treatment, particularly for cases involving retained projectiles.

Civilian Gun Shot Wounds Associated With Spinal Injuries

STUDY DESIGN

Retrospective.

OBJECTIVE

To evaluate functional outcomes and characteristics associated with gunshot wound (GSW) to the spine.

METHODS

Patients with GSW to the spine managed at a Level 1 Trauma Center from January 2003 to December 2017 were enrolled. Patient demographics, diagnoses, level of injury, American Spinal Injury Association (ASIA) score, ambulatory status at follow-up, bowel and bladder function, clinical improvement, and mortality were evaluated. Clinical improvement was defined as a progression in ambulatory status category at latest follow up.

RESULTS

51 patients with GSW of the spine were identified. 48 (94.1%) were male and 3 (5.9%) were female, with a mean age of 27 years-old (range 15-56). 38 (74.5%) were Caucasian, 7 (13.7%) were African American, 1 (2.0%) Asian-American, and 5 (9.8%) were Other/Unknown. 46 (90.2%) patients had GSW related spinal fractures and 44 (86.3%) had neurological deficits. Among patients with neurologic deficits, 5 (9.8%) had Cauda Equina Syndrome, 1 (2%) had Brown-Sequard Syndrome, and 38 (74.5%) spinal cord injuries: ASIA A 26 (68.4%); ASIA B 3 (7.9%); ASIA C 7 (18.4%); ASIA D 2 (5.3%). At mean follow-up time of 4.2 years (SD 3.9), 27 (52.9%) patients were wheelchair bound, 11 (21.6%) were ambulating with assistance, and 13 (25.5%) had normal ambulation. ASIA grade (A or B) was significantly, P < 0.00001, associated with being wheelchair bound and having neurogenic bowel or bladder at follow-up.

CONCLUSIONS

Most spinal GSW patients (70.6%) did not have any clinical improvement in ambulatory status and most injuries were ASIA A.

Surgical Intervention is Associated With Improvements in the ASIA Impairment Scale in Gunshot-induced Spinal Injuries of the Thoracic and Lumbar Spine

STUDY DESIGN

Retrospective cohort study of patients from the National Spinal Cord Injury Statistical Center (NSCISC).

OBJECTIVE

The aim was to compare the outcomes of patients with gunshot-induced spinal injuries (GSIs) treated operatively and nonoperatively.

SUMMARY OF BACKGROUND DATA

The treatment of neurological deficits associated with gunshot wounds to the spine has been controversial. Treatment has varied widely, ranging from nonoperative to aggressive surgery.

METHODS

Patient demographics, clinical information, and outcomes were extracted. Surgical intervention was defined as a "laminectomy, neural canal restoration, open reduction, spinal fusion, or internal fixation of the spine." The primary outcome was the American Spinal Injury Association (ASIA) Impairment Scale. Statistical comparisons of baseline demographics and neurological outcomes between operative and nonoperative cohorts were performed.

RESULTS

In total, 961 patients with GSI and at least 1-year follow-up were identified from 1975 to 2015. The majority of patients were Black/African American (55.6%), male (89.7%), and 15-29 years old (73.8%). Of those treated surgically (19.7% of all patients), 34.2% had improvement in their ASIA Impairment Scale score at 1 year, compared with 20.6% treated nonoperatively. Overall, surgery was associated with a 2.0 [95% confidence interval (CI): 1.4-2.8] times greater likelihood of ASIA Impairment Scale improvement at 1 year. Specifically, benefit was seen in thoracic (odds ratio: 2.5; 95% CI: 1.4-4.6) and lumbar injuries (odds ratio: 1.7; 95% CI: 1.1-3.1), but not cervical injuries.

CONCLUSIONS

While surgical indications are always determined on an individualized basis, in our review of GSIs, surgical intervention was associated with a greater likelihood of neurological recovery. Specifically, patients with thoracic and lumbar GSIs had a 2.5 and 1.7-times greater likelihood of improvement in their ASIA Impairment Scale score 1 year after injury, respectively, if they underwent surgical intervention.

Investigational Therapies for Gunshot Wounds to the Spine: A Narrative Review

STUDY DESIGN

This was a narrative review.

OBJECTIVE

The objective of this study was to review the standards of care and triage protocol for gunshot wounds to the spine, highlighting innovative future treatment options that may be implemented in patients with spinal cord injury (SCI).

SUMMARY OF BACKGROUND DATA

With the increased availability of firearms among the United States population, gunshot wounds to the spine are becoming a clinically relevant and devastating issue. Such injuries result in severe and diverse complications. SCIs due to gunshot wounds are the leading cause of morbidity and mortality, as they often result in complete or incomplete paraplegia. Current standards of care focus on preventing further damage rather than total cure or treatment of SCI.

METHODS

A literature review was performed on the standards of care, triage protocol, associated conditions, current therapeutic options, and innovative treatment options for patients with gunshot wounds to the spine.

RESULTS

The general standards of care for spinal gunshot wounds involve maintaining or renewal of mechanical spinal steadiness and neurological activity while limiting complications of treatment. Current treatment options include management of mean arterial pressure goals, drug therapies consisting of antibiotics, and surgical approaches. With recent innovations in molecular biology and cell transplantation, potentially new and promising treatment options for patients with SCI exist. These options include cell transplantation therapies, platelet-rich plasma administration, exosomal treatments, and mitochondrial-targeted therapeutics. Stem cell transplantation is promising, as several clinical studies have been completed. However, loss-to-follow-up, lack of long-term evaluation, and questionable randomization has limited the use of stem cells in the standard of care practice. Although not studied on human models to a gunshot wound, exosomal and mitochondrial-based treatment options have been studied both in vitro and in animal models with SCI.

CONCLUSION

Newly emerging molecular and cellular therapy modalities for SCI contribute to the recovery process and may be utilized in conjunction with the current modalities for better outcomes.

Case Report: Full-Endoscopic Surgery for Bullet Wounds of the Spine: A Report of Three Cases

Objectives

To determine the feasibility and evaluate effectiveness of full-endoscopic surgery in gunshot wound of the spine.

Methods

Three clinical cases of lumbar and thoracic spine bullet wounds made by firearms and traumatic weapons are described. Percutaneous endoscopic surgery was performed to extract bullet from the spinal canal. The results are compared to the data from literature.

Results

Percutaneous endoscopic approach to spinal canal with a possibility to extract a bullet, decompression of nerve roots, defect closure of the dura mater is demonstrated.

Conclusion

Good clinical outcomes allows to recommend percutaneous endoscopic surgery to manage similar lumbar and thoracic spine bullet wounds at the tertiary care level.

Incidence and Epidemiology of Thoracolumbar Spine Fractures: WFNS Spine Committee Recommendations

This review aims to search the epidemiology and incidence rates of thoracolumbar spine fractures. A systematic review of the literature of the last 10 years gave 586 results with “incidence,” and 387 results with “epidemiology,” of which 39 papers were analyzed. The review results were discussed and voted in 2 consensus meetings of the WFNS (World Federation of Neurosurgical Societies) Spine Committee. Out of 39 studies, 15 studies have focused on thoracolumbar trauma, remaining 24 studies have looked at all spine trauma. Most were retrospective in nature; few were prospective and multicenter. Some studies have focused on specific injuries. The annual incidence of TL fractures is about 30/100,000 inhabitants including osteoporotic fractures. There is a trend to increase the fractures in elderly population especially in developed countries, while an increase of motor vehicle accidents in developing countries. The mortality rate among male elderly patients is relatively high. The incidence of thoracolumbar spine fractures is increasing because of low-velocity falls in the elderly population. The main reasons are falls and traffic accidents. Learning the regional differences and some special forms of trauma such as extreme sports, war, and gunshot injuries will help the prevention of the thoracolumbar spine fractures.

Retained Bullets After Firearm Injury: A Survey on Surgeon Practice Patterns

Retained bullets are common after firearm injuries, yet their management remains poorly defined. Surgeon members of the Eastern Association for the Surgery of Trauma (N = 427) were surveyed using an anonymous, web-based questionnaire during Spring 2016. Indications for bullet removal and practice patterns surrounding this theme were queried. Also, habits around screening and diagnosing psychological illness in victims of firearm injury were asked. Most respondents were male (76.5%, n = 327) and practiced at urban (84.3%, n = 360), academic (88.3%, n = 377), Level 1 trauma centers (72.8%, n = 311). Only 14.5% (n = 62) of surgeons had institutional policies for bullet removal and 5.6% (n = 24) were likely to remove bullets. Half of the surgeons (52.0%, n = 222) preferred to remove bullets after the index hospitalization and pain (88.1%, n = 376) and a palpable bullet (71.2%, n = 304) were the most frequent indications for removal. Having the opportunity to follow-up with patients to discuss bullet removal was significantly predictive of removal (odds ratio (OR) = 2.25, 95% confidence interval (CI) = [1.05, 4.85], p = .04). Furthermore, routinely asking about retained bullets during outpatient follow-up was predictive of new psychological illness screening (OR = 1.94, 95% CI [1.19, 3.16], p = .01) and diagnosis (OR = 1.86, 95% CI = [1.12, 3.09], p = .02) in victims of firearm injury. Thus, surgeons should be encouraged to allot time for patients concerning retained bullet management so that a shared decision can be reached.

Thoracolumbar Spine Trauma

Thoracolumbar spine trauma can result in potentially life-threatening consequences and requires careful management to ensure good outcomes. The purpose of this chapter is to discuss the anatomy, diagnostic tools, non-operative, and operative treatments important when addressing thoracolumbar trauma.

MANAGEMENT OF SPINAL GUNSHOT WOUND INJURIES

ABSTRACT Objectives Elaborate a care protocol for spinal gunshot wounds (GSWs), based on the experience of more than fifteen years of treating this type of injury. Methods A retrospective cross-sectional analysis of the electronic medical record data of a tertiary hospital related to the treatment of spinal GSWs between January 2002 and January 2018. Results The management proposed was applied to 700 patients. Epidemiological data collected describes the population served. Conclusions An easy-to-use treatment flowchart was developed that, according to factors related to the neurological condition, projectile location, lesion stability and additional criteria, allows the objective determination of the best treatment option for each case. Level of evidence II; Retrospective Study.

Management of cerebrospinal fluid leak from cervical gunshot wounds with external ventricular drainage: a small case series

Historically, the surgical management of gunshot wounds to the spine has been controversial. Repair of a persistent cerebrospinal fluid (CSF) leak is a generally agreed upon indication. The management of such CSF leaks typically involves lumbar drainage or direct surgical repair. Here, the authors report two cases of CSF diversion with an external ventricular drain (EVD) in patients with cervical gunshot wounds. Both patients had spinal canal obliteration or physiologic myelographic block at or below the level of injury. To the best of the author’s knowledge, these are the first two reports of successful EVD treatment of persistent CSF leaks related cervical gunshot wounds. The authors also propose a CSF treatment algorithm for cervical gunshot wounds that includes EVD.

Gunshot injury to spine: An institutional experience of management and complications from a developing country

PURPOSE

Gunshot wounds are the second leading cause of spinal cord injuries. Surgical intervention for gunshot injury to the spine carries a high rate of complications. There is a scarcity of data on civilian gunshot injuries to the spine in Pakistan. Approximately 60 cases over the last 10 years have been recoded, with unusual presentation and neurological recovery. Thus it is imperative to fill this gap in data, by reviewing cases of civilian gunshot injuries to spine presenting at a tertiary care hospital (Aga Khan University Hospital, Karachi).

METHODS

This is a retrospective cohort study. Patients of all ages who presented to the emergency department of Aga Khan University Hospital, with gunshot injuries to spine between January 2005 and December 2016 were included in the study. Data were collected on neurological status (American Spinal Injury Association score was used for the initial and follow-up neurological assessment), extent of cord transection, motor and sensory deficits. The patients were further grouped into those with cord transection, and those with fractures of the bony spine but an intact spinal cord. These patients were then followed and the outcomes were recorded.

RESULTS

A total of 40 patients were identified. The mean ± SD of patients age was (30.9 ± 9.5) years. Of the 40 patients with gunshot wounds, 31 had the medical imaging performed at the facility, and hence they were included in this categorization. The remaining 9 patients were excluded from this additional grouping. Thirteen patients were managed surgically and 27 patients underwent the conservative management. The mean ± SD of follow-up was (8.7 ± 7.2) months. In our study, the thoracic spine was the most commonly injured region in gunshot injuries. Of the 31 patients with medical imaging performed at our institute, 17 (54.8%) had cord transection, of whom 8 (47%) ultimately developed paraplegia.

CONCLUSION

The prognosis of gunshot injuries to the spine can be varied depending on whether the spinal cord is intact or transected. This will help healthcare providers to plan the further management of the patient and counsel them accordingly.

The effect of the delay between injury and surgery on mortality, morbidity, and complications in craniospinal gunshot wounding

Introduction

The effect of the surgical approach and the duration between the trauma and surgery on the complications, morbidity, and mortality in cranial and spinal penetrating gunshot injuries are investigated.

Methods

Evaluation of 63 patients from the Libyan civil war who were referred to the İstanbul Yeni Yüzyıl University Gaziosmanpaşa Hospital neurosurgery clinic for the treatment and surgery between 2015 and 2017.

Results

Complications such as meningitis, superficial infection, and abscess developed in 31% of the patients who underwent surgery within the initial 24 h, 58% of the patients who underwent surgery between 24 and 72 h and in all patients who underwent surgery after 72 h. While an improvement was seen in all 14 patients who had preoperative paresis and underwent surgery within 24 h or between 24 and 72 h, only one of the six patients who had paresis and underwent surgery after 72 h improved. One of the patients who underwent surgery within 24 h, three of those who underwent surgery between 24 and 72 h, and four of those who underwent surgery after 72 h died.

Conclusion

The complications, morbidity, and mortality increase with a prolonged duration between the injury and surgery after craniospinal gunshot wounding.

Lead Toxicity From Intradiscal Retained Bullet Fragment: Management Considerations and Recommendations

BACKGROUND

Lead toxicity (plumbism) secondary to retained lead missiles in synovial joint spaces is a rare complication after gunshot injuries. Management of lead missiles in the intradiscal space regarding potential lead toxicity is less certain.

CASE DESCRIPTION

We reviewed the literature regarding lead toxicity secondary to intradiscal bullets particularly concerning incidence, management, and outcomes. A lack of high-quality published data precludes a meta-analysis from taking place. Only four reports of lead toxicity secondary to missiles in the intradiscal space have been published. Including an additional case presented in this report, our review of the literature has led us to make several management recommendations, largely based on both the available literature and our current report.

CONCLUSIONS

First, there is insufficient evidence for removing retained lead missiles solely to mitigate the risk of lead toxicity. Second, chelation therapy in addition to surgical removal of the lead source is a valuable adjunct in the perioperative period and should be undertaken with the assistance of medical toxicology. Third, a retained missile does not mandate a simultaneous stabilization procedure in lieu of other indications based on the data available at this time.

Does Surgical Intervention Help with Neurological Recovery in a Lumbar Spinal Gun Shot Wound? A Case Report and Literature Review

The third leading cause of spinal injuries are gunshot wounds to the spine, accounting for 15.2% of all spinal cord injuries. Treatment for gunshot wound spinal cord injuries (GSWSCI) remains variable, with indications for surgery being controversial. There is no clear evidence or guidelines that can help spine surgeons decide and direct surgical intervention. With the paucity of available literature, we report an interesting case of a gunshot injury to the lumbar spine at L1-L2, discuss the presentation and outcome, and evaluate relevant literature. A 27-year-old incarcerated male patient presented with a conus cauda equina asymmetrical injury involving the lower extremities and required initial medical stabilization in the intensive care unit (ICU). He subsequently underwent delayed surgical treatment with decompression and fragment resection at L1-L2. The patient improved neurologically to the American Spinal Injury Association (ASIA) Classification D and eventually regained nearly all lower extremity neurological function. Despite considerable evidence favoring the conservative management of GSWSCI and the absence of guidelines or recommendations on surgical interventions, our case report demonstrates that surgical intervention in appropriately selected patients can yield good recovery of neurological function and improvement in the quality of life. The key remains careful patient selection, the appropriate location of the retained fragment, and the extent of neurological injury that occurred. We feel surgical decompression and fragment removal, along with debridement, can result in good neurological recovery and long-term outcomes.

The effect of surgically implanted metallic bullet fragments on the intervertebral disc using a canine model☆

PURPOSE

To characterize the gross, histologic, and systemic changes caused by implantation of metal fragments commonly used in commercial bullets into the intervertebral disc.

BACKGROUND CONTEXT

Long-term complications of retained bullet fragments in the spine have been documented in the literature; however, the impact of different metal projectiles on the intervertebral disc has not been described. This study was performed to assess the local effects of the metallic bullet fragments on the intervertebral disc and their systemic effects regarding metal ion concentrations in serum and solid organs.

STUDY DESIGN

Animal Model Study.

METHODS

Funding for this project was provided by the Cervical Spine Research Society in the amount of $10,000. Copper, lead, and aluminum alloys from commercially available bullets were surgically implanted into sequential intervertebral discs in the lumbar spine of six canines. Kirschner wire implantation and a sham operation were performed as controls. Radiographs were performed to confirm the location of the bullets. Animals were sacrificed at 4, 6, and 9 months postimplantation. Whole blood, plasma, cerebrospinal fluid, kidney tissue, and liver tissue samples were analyzed for copper and lead concentrations. Histologic and gross samples were examined at the time of sacrifice.

RESULTS

Significant tissue reactions were noted in the discs exposed to copper and lead. Copper resulted in significantly more severe disc degeneration than either the lead or aluminum alloy. In the short interval follow-up of this study, no statistically significant trend was observed in whole blood, plasma, cerebrospinal fluid, and tissue levels.

CONCLUSION

This study demonstrates that the canine intervertebral disc is differentially susceptible to metallic fragments depending on the composition. Trends were noted for increasing levels of lead and copper in liver tissue samples although statistical significance could not be reached due to short time interval and small sample size. The metallic composition of retained fragments can be a determining factor in deciding on surgical intervention.

A case series of penetrating spinal trauma: comparisons to blunt trauma, surgical indications, and outcomes

OBJECTIVE

While blunt spinal trauma accounts for the majority of spine trauma, penetrating injuries affect a substantial number of patients. The goal of this study was to examine the epidemiology of penetrating spine injuries compared with blunt injuries and review the operative interventions and outcomes in the penetrating spine injury group.

METHODS

The prospectively maintained trauma database was queried for spinal fractures from 2012 to 2018. Charts from patients with penetrating spine trauma were reviewed.

RESULTS

A total of 1130 patients were evaluated for traumatic spinal fractures; 154 injuries (13.6%) were secondary to penetrating injuries. Patients with penetrating injuries were significantly younger (29.2 years vs 44.1 years, p < 0.001), more likely male (87.7% vs 69.2%, p < 0.001), and more commonly African American (80.5% vs 33.3%, p < 0.05). When comparing primary insurers, the penetrating group had a significantly higher percentage of patients covered by Medicaid (60.4% vs 32.6%, p < 0.05) or prison (3.9% vs 0.1%, p < 0.05) or being uninsured (17.5% vs 10.3%, p < 0.05). The penetrating group had a higher Injury Severity Score on admission (20.2 vs 15.6, p < 0.001) and longer hospital length of stay (20.1 days vs 10.3 days, p < 0.001) and were less likely to be discharged home (51.3% vs 65.1%, p < 0.05). Of the penetrating injuries, 142 (92.2%) were due to firearms. Sixty-three patients (40.9%) with penetrating injuries had a concomitant spinal cord or cauda equina injury. Of those, 44 (69.8%) had an American Spinal Injury Association Impairment Scale (AIS) grade of A. Ten patients (15.9%) improved at least 1 AIS grade, while 2 patients (3.2%) declined at least 1 AIS grade. Nine patients with penetrating injuries underwent neurosurgical intervention: 5 for spinal instability, 4 for compressive lesions with declining neurological examination results, and 2 for infectious concerns, with some patients having multiple indications. Patients undergoing neurosurgical intervention did not show a significantly greater change in AIS grade than those who did not. No patient experienced a complication directly related to neurosurgical intervention.

CONCLUSIONS

Penetrating spinal trauma affects a younger, more publicly funded cohort than blunt spinal trauma. These patients utilize more healthcare resources and are more severely injured. Surgery is undertaken for limiting progression of neurological deficit, stabilization, or infection control.

Stability of the Subaxial Spine after Penetrating Trauma: Do Classification Systems Apply?

OBJECTIVE

Blunt spinal trauma classification systems are well established and provide reliable treatment algorithms. To date, stability of the spine after civilian gunshot wounds (CGSWS) is poorly understood. Herein, we investigate the validity of trauma classification systems including the Thoracolumbar Injury Classification and Severity Score (TLICS), Subaxial Cervical Spine Injury Classification and Severity Score (SLIC), and Denis' three-column model when applied to spinal penetrating trauma from gunshots, while secondarily evaluating stability of these injuries.

METHODS

Gunshot injuries to the spine were identified from an institutional database from ICD-nine codes. Trauma scorings systems were applied using traditional criteria. Neurologic compromise and spinal stability were evaluated using follow-up clinic notes and radiographs.

RESULTS

Thirty-one patients with CSGSW were evaluated. There was an equal distribution of injuries amongst the spinal levels and spinal columns. Twenty patients had neurological deficits at presentation. Eight patient had a TLICS score >4. Three patients had a SLIC score >4. One patient had surgical treatment. Nonoperative treatment did not lead to spinal instability or adverse outcomes in any cases. The posterior column had a high correlation with neurologic compromise, though not statistically significant (p=.118).

CONCLUSIONS

The TLICS, SLIC, and three-column classification systems cannot be applied to CSGSW to quantify injury severity, predict outcomes, or guide treatment decision-making. Despite significant neurologic injuries and disruption of multiple spinal columns, CSGSW do not appear to result in unstable injuries requiring operative intervention. Further research is needed to identify the rare spinal gunshot injury that would benefit from immediate surgical intervention.

Spinal Gunshot Wounds: Pattern and Associated Lesions in Civilians

STUDY DESIGN

Retrospective, descriptive case series study.

PURPOSE

To investigate the frequency, bone pattern, and associated lesions to the spine of gunshot wounds.

OVERVIEW OF LITERATURE

Gunshot wounds are penetrating in nature and are caused by a bullet or projectile. These are becoming more common and are associated with significant sequelae, requiring long and costly multidisciplinary treatment. Associated spinal cord injuries (SCIs) in the civilian population represent 13%-17% of all spinal traumas. Spinal gunshot wounds are commonly thought to be stable; however, there is potential acute and chronic spinal instability if the bullet passes transversely, fracturing either both pedicles or both facet joints.

METHODS

We obtained data from the clinical files of patients with spinal gunshot wounds treated by spine surgeons. We performed a statistical analysis to obtain the pattern and frequency of the injuries.

RESULTS

We included 54 patients (48 men [89%] and six women [11%]). Eight patterns of spinal gunshot wounds were identified; 61% (33 patients) had complete SCI. The thoracic spine was most frequently affected, with 88% of patients having SCI; 75%, hemopneumothorax; 28%, pulmonary lesions; and 16%, hepatic lesions. The presence of pedicle fractures had an odds ratio of 3.64 for SCI.

CONCLUSIONS

The two main bone patterns are the vertebral body and posterior arch with pedicle fractures as modifiers, given that they are at a high risk for SCI. The spinal pattern and associated lesions were related to the bullet's path, with the vertebral body having the highest frequency of associated lesions. Vertebral body burst fracture was the main indication for instrumentation.

Surgical management of penetrating spinal cord injury primarily due to shrapnel and its effect on neurological outcome: a literature review and meta-analysis

OBJECTIVE

This study was performed to determine whether decompression of penetrating spinal cord injury (SCI) due to explosive shrapnel leads to greater neurological recovery than conservative management.

METHODS

In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a comprehensive literature search using PubMed/MEDLINE, Web of Science, Google Scholar, and the Defense Technical Information Center public site was conducted on May 2, 2016. Studies that described penetrating SCI with shrapnel as an etiology, included surgical and/or conservative management, and demonstrated admission and follow-up neurological status were eligible for inclusion in this study. Odds ratios were calculated for the overall effect of surgical treatment on neurological recovery. Funnel plots were used to evaluate publication bias.

RESULTS

Five case series (Level IV evidence) met the study criteria, and 2 of them had estimable odds ratios for use in the Forest plot analysis. Among the patients from all 5 studies, 65% were injured by shrapnel, 25% by high-velocity bullet, 8% by low-velocity bullet, and 2% by an unknown cause. A total of 288 patients were included in the overall odds ratio calculations. Patients were stratified by complete and incomplete SCI. The meta-analysis showed no significant difference in outcomes between surgical and conservative management in the complete SCI cohort or the incomplete SCI cohort. Overall rates of improvement for complete SCI were 25% with surgery and 27% with conservative treatment (OR 1.07, 95% CI 0.44–2.61, p = 0.88); for incomplete SCI, 70% with surgery and 81% with conservative treatment (OR 1.67, 95% CI 0.68–4.05, p = 0.26).

CONCLUSIONS

This study demonstrates no clear benefit to surgical decompression of penetrating SCI due predominantly to shrapnel. There is a considerable need for nonrandomized prospective cohort studies examining decompression and stabilization surgery for secondary and tertiary blast injuries.

Operative Versus Nonoperative Management of Civilian Gunshot Wounds to the Spinal Cord: Novel Use of the Functional Independence Measure for Validated Outcomes

BACKGROUND

Surgery for patients with gunshot wound spinal cord injury (GSCI) remains controversial. Few recent studies provide standardized follow-up and detailed functional outcomes. To our knowledge, the research we present in this study is unique in that we are the first to incorporate Functional Independence Measure (FIM) scores as an outcomes measure for neurologic recovery in patients with GSCI.

METHODS

Patients with GSCI were divided into surgical and nonsurgical groups. Neurologic function was measured according to the American Spinal Injury Association impairment scale and defined as either complete or incomplete injury. Outcomes were then analyzed separately for complete and incomplete GSCI groups during hospitalization and rehabilitation.

RESULTS

Baseline admissions characteristics were similar between surgical and nonsurgical groups except for a greater median injury severity score in the nonsurgical group (34 vs. 27; P = 0.02). For complete GSCI, total length of stay (LOS) was significantly longer in the surgical group (52 vs. 42 days; P = 0.04), and no difference was observed in overall FIM scores (58 vs. 54; P = 0.7). For incomplete GSCI, rehabilitation LOS was longer (35 vs. 21; P = 0.02) and a trend towards longer total LOS was observed in the surgical group (40 vs. 32; P = 0.07). No difference was observed in overall FIM scores (61 vs. 62; P = 0.9).

CONCLUSIONS

Surgery for patients with GSCI is associated with increased LOS and is not associated with improved FIM scores for patients with either complete or incomplete spinal cord injuries.

Enterococcus faecalis causing delayed spondylodiscitis in a case with retained intraspinal bullet

Delayed presentations have been reported following gunshot wounds (GSW) with retained intraspinal bullets due to migration of projectile or lead intoxication. We report on the rare occurrence of delayed pyogenic spondylodiscitis and neurological dysfunction following injury from low velocity GSW to the spine with a retained projectile. A 55-year-old male presented 4 months following GSW to the abdomen which resulted in colonic injury and L5 fracture. The patient was treated initially with ileo-transverse anastomosis, antibiotics, without retrieval of the bullet. He developed low back pain, claudication 4 months following GSW and investigations suggested a pyogenic spondylodiscitis at L5-S1. The patient was treated with surgical debridement of infective focus and stabilisation with definitive fusion being performed after an interval of 14 days. The biopsy of the lesion confirmed findings of spondylodiscitis and the culture isolated Enterococcus faecalis species. The patient was treated with antibiotics as per sensitivity and made an uneventful recovery over 4 weeks. The follow-up radiographs showed satisfactory healing at final follow up of 24 months. GSW with colonic perforation have higher incidence of infective complications however majority to these occur in the early postoperative period. This case report demonstrates the possibility of late onset presentation due to spinal infection occurring following colonic perforation with retained intraspinal bullet.

Firearm bullet settling into the lumbar spinal canal without causing neurological deficit: A report of two cases

BACKGROUND

Uncertainty still exists regarding the treatment of the patients presenting with gunshot wounds to the spine. Neurological insults, cerebrospinal fluid fistula, infection, lead or copper toxicity, migration of bullets, and spinal instability are included among the common challenging issues.

CASE DESCRIPTION

An 18-year-old woman was admitted with low back pain following a gunshot injury five days ago. She was neurologically intact. Radiological examinations showed that a bullet was settled in L4-5 disc space. The bullet was removed with a unilateral L4-5 partial hemilaminectomy and discectomy from the left side. The second case was of a 29-year-old man admitted with radiating leg pain on the right side following a gunshot injury from his left side of lower back four months ago. He had only positive straight leg raising test. Radiological studies showed two bullets, one was in the psoas muscle on the left side and the other was in spinal canal that had caused a burst fracture of the L5 vertebra. Following L5 laminectomy and bilateral L5-S1 facetectomy, the bullet was removed from the spinal canal and L5-S1 transpedicular posterior stabilization was performed. The postoperative period of both patients was unremarkable.

CONCLUSION

Bullet settling into the lumbar spinal canal without causing neurological deficit may require surgical intervention. Removal of bullets provided not only pain relief in both the cases but also prevented future complications such as migration of the bullets, plumbism, and neuropathic pain and instability.