Incidence of non-traumatic spinal cord injury in Victoria, Australia: a population-based study and literature review

Gait training using a wearable robotic hip device for incomplete spinal cord injury: A preliminary study

CONTEXT/OBJECTIVE

To explore changes in gait functions for patients with chronic spinal cord injury (SCI) before and after standard rehabilitation and rehabilitation with a wearable hip device, explore the utility of robot-assisted gait training (RAGT), and evaluate the safety and dose of RAGT.

DESIGN

Single-arm, open-label, observational study.

SETTING

A rehabilitation hospital.

PARTICIPANTS

Twelve patients with SCI.

INTERVENTIONS

Standard rehabilitation after admission in the first phase. RAGT for two weeks in the second phase.

OUTCOME MEASURES

Self-selected walking speed (SWS), step length, cadence, and the 6-minute walking distance were the primary outcomes. Walking Index for SCI score, lower extremity motor score, and spasticity were measured. Walking abilities were compared between the two periods using a generalized linear mixed model (GLMM). Correlations between assessments and changes in walking abilities during each period were analyzed.

RESULTS

After standard rehabilitation for 66.1 ± 36.9 days, a period of 17.6 ± 3.3 days of RAGT was safely performed. SWS increased during both periods. GLMM showed that the increase in cadence was influenced by standard rehabilitation, whereas the limited step length increase was influenced by RAGT. During RAGT, the increase in step length was related to an increase in hip flexor function.

CONCLUSIONS

Gait speed in patients with SCI increased after rehabilitation, including RAGT, in the short-term. This increase was associated with improved muscle function in hip flexion at the start of RAGT.Trial Registration: This study was registered with the UMIN Clinical Trials Registry (UMIN-CTR; UMIN000042025).

Unveiling the mosaic: comparing demographics and outcomes in traumatic vs. non-traumatic spinal cord injuries

BACKGROUND

This study analyzed the percentage of patients with nontraumatic spinal cord injury (SCI) which is increasing with the increase of population age. However, little is known about the effect of the etiology of SCI on the outcome of these subjects.

AIM

The aim of this study was to investigate functional and neurological outcomes in patients with traumatic and nontraumatic spinal cord lesions, with a focus on factors influencing rehabilitation outcomes.

DESIGN

The design of this study was that of a retrospective analysis of prospectively recorded data.

SETTING

The setting of this analysis was a single Spinal Unit in Italy.

POPULATION

The population included 1080 subjects, of which 599 (55%) had injuries of traumatic origin and 481 (45%) had nontraumatic injuries.

METHODS

International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI), the Spinal Cord Independence Measure (SCIM) and the Walking Index for Spinal Cord Injury (WISCI) were utilized as measurement tools. Multivariate (backwards selection, P=0.20) logistic regression was used to assess the associations of "complication during hospitalization," "bowel management autonomy," "spontaneous micturition," "home destination" and "neurological improvement" with the following variables: etiology, age, sex, lesion level and severity and length of stay. Multivariate (backwards selection, P=0.20) negative binomial regression was used to assess the relative risks of higher SCIM and WISCI Scores at discharge after adjusting for the abovementioned variables.

RESULTS

Our work highlighted several significant differences between the traumatic and nontraumatic groups (including age, sex, lesion severity, and time from lesion onset to admission). Both groups exhibited comparable improvements in neurological and functional status, although some data were in favor of subjects with traumatic lesions. However, the regression analyses demonstrated that the main factors impacting the neurological and functional status at discharge were age, lesion level and severity, rather than the etiology of the lesion.

CONCLUSIONS

Our study provides valuable insights into the rehabilitation trajectories of traumatic and nontraumatic spinal cord injuries and demonstrates that the cause of SCI has no impact on rehabilitation outcomes.

CLINICAL REHABILITATION IMPACT

An understanding of neurological and functional recovery after spinal cord lesions is essential for answering patients' questions about their potential functional capabilities. It also assists in determining the necessary resources for inpatient rehabilitation and post discharge care. Moreover, the possession of a thorough grasp of the course and factors influencing the natural recovery of a spinal cord lesion is now a scientific necessity and is crucial for assessing the efficacy of new pharmacological and rehabilitative methods.

Development of a chronic compression spinal cord injury model in neonatal and adult rats

BACKGROUND

Spinal cord injury presents a significant burden globally, with traumatic spinal cord injury being the predominant cause historically. However, nontraumatic spinal cord injury (NTSCI) is emerging as a significant contributor, particularly in developed nations, yet it remains poorly understood due to underreporting and misclassification. NTSCI, spanning various etiologies such as bony growths, vascular conditions, infections, neoplastic conditions, and immune disorders, poses unique challenges in diagnosis and treatment, often resulting in lifelong morbidity. This study addresses the lack of suitable animal models for NTSCI research, especially in neonatal animals.

METHODS

Utilizing a solid spacer approach, we developed a compression NTSCI model applicable to both neonatal and adult Sprague-Dawley rats.

RESULTS

Through anatomical measurements and in vivo experiments, we confirmed the feasibility and safety of the spacer insertion procedure and observed no acute off-target effects.

CONCLUSION

The versatility of this model lies in its adaptability to different ages of rats, offering a cost-effective and reproducible means to induce graded injuries. Moreover, behavioral assessments demonstrated observable hindlimb function, validating the model's utility for studying functional outcomes. Although challenges persist, particularly in accounting for spinal column growth in neonatal animals, this model fills a crucial gap in pediatric NTSCI research. By providing a platform to investigate pathophysiological mechanisms and test potential treatments, it offers promising avenues for advancing our understanding and management of pediatric NTSCI.

Pilot Study of Home-Based Virtual Reality Fitness Training in Post-Discharge Rehabilitation for Patients with Spinal Cord Injury: A Randomized Double-Blind Multicenter Trial

Spinal cord injury (SCI) patients require continuous rehabilitation post-discharge to ensure optimal recovery. This study investigates the effectiveness of home-based virtual reality fitness training (VRFT) as a convenient and accessible rehabilitation method for SCI patients. This randomized, double-blind, multicenter trial will enroll 120 participants, assigning them to either an 8-week VRFT program (exercise group) or a control group engaging in regular daily activities. The outcomes measured include muscle function, cardiopulmonary fitness, body composition, and physical performance. Our study will determine the safety and feasibility of VRFT in a home setting for SCI patients and evaluate whether these patients can effectively participate in such a program post-discharge. The results of this study are expected to inform future exercise protocols for SCI rehabilitation, offering valuable insights into the utility of VRFT as a therapeutic tool.

Does cardiometabolic risk profile differ among individuals with traumatic and non-traumatic spinal cord injury (SCI): the evidence from the multicenter SCI cohort in Switzerland (SwiSCI)

STUDY DESIGN

Longitudinal study.

OBJECTIVE

To explore whether individuals with traumatic spinal cord injury (TSCI) and non-traumatic SCI (NTSCI) experience different trajectories in changes of cardiometabolic disease (CMD) factors during initial rehabilitation stay.

SETTING

Multicenter Swiss Spinal Cord Injury Cohort (SwiSCI) study.

METHODS

Individuals without history of cardiovascular diseases were included. CMD factors and Framingham risk score (FRS) were compared between TSCI and NTSCI. Linear mixed models' analysis was employed to explore the trajectory in CMD factors changes over rehabilitation period and a multivariate linear regression analysis was used at discharge from inpatient rehabilitation to explore factors associated with CMD risk profile in TSCI and NTSCI. We performed age and sex-stratified analyses.

RESULTS

We analyzed 530 individuals with SCI (64% with TSCI and 36% NTSCI). The median age was 53 years (IQR:39-64) with 67.9% (n = 363) of the study cohort being male. The median rehabilitation duration was 4.4 months (IQR 2.4-6.4). At admission to rehabilitation, FRS (9.61 vs. 5.89) and prevalence of hypertension (33.16% vs. 13.62%), diabetes (13.68% vs. 4.06%), and obesity (79.05% vs. 66.67%) were higher in NTSCI as compared to TSCI, No difference was observed in cardiometabolic syndrome between the groups (around 40% in both groups). Overall, we observed longitudinal increases in total cholesterol, HDL-C and HDL/total cholesterol ratio, and a decrease in fasting glucose over the rehabilitation period. No differences in longitudinal changes in cardiovascular risk factors were observed between TSCI and NTSCI.

CONCLUSIONS

There was no deterioration in cardiometabolic risk factors over rehabilitation period, at discharge from initial rehabilitation stay. Both TSCI and NTSCI experienced high burden of cardiometabolic syndrome components with NTSCI experiencing more disadvantageous risk profile. The effectiveness of therapeutic and lifestyle/behavioral strategies to decrease burden of cardiometabolic disease and its components in early phase should be explored in future studies.

Challenge or opportunity: Rehabilitation outcomes in patients with metastatic spinal cord compression - a UK single center experience

CONTEXT /OBJECTIVE

Metastatic Spinal Cord Compression (MSCC) is a devastating complication of cancer, affecting approximately 3000 patients per annum in England. However, access to rehabilitation services for MSCC patients is limited. The London Spinal Cord Injury Centre has set up a bespoke MSCC rehabilitation pathway from May 2013. This article aims to describe the clinical features and functional outcomes of patients with MSCC admitted to a Specialist Spinal Cord Injury Rehabilitation Centre between May 2013 and December 2021.

DESIGN

Retrospective analysis of medical records from a single specialist rehabilitation centre database.

SETTING

London Spinal Cord Injury Centre (LSCIC), Stanmore, United Kingdom.

PARTICIPANTS

Adult patients diagnosed with MSCC who were admitted to and discharged from LSCIC from May 2013 to December 2021.

INTERVENTIONS

Specialist Inpatient Spinal Cord Injury Rehabilitation Program.

OUTCOME MEASURES

Spinal Cord Independence Measure 19 (SCIM version III), Discharge Destination.

RESULTS

A total of 40 patients with MSCC were admitted - 32 male and 8 female patients. The average length of stay was 6 weeks. 17(42.5%) patients had primary prostate cancer. Most patients (34(85%)) had thoracic MSCC. There was an improvement in the Spinal Cord Independence Measure in all patients with an average significant improvement from 43.8 to 64.5 (P < 0.001). There was no significant difference in SCIM scores between patients under 65 and over 65. 28 (70%) patients required psychological input. 33(82.5%) patients were discharged home.

CONCLUSION

Patients with MSCC show improvement in SCIM outcome measures after a six-week inpatient Specialist Spinal Rehabilitation program.

Trends in the characteristics and outcomes of older patients with non-traumatic spinal cord injury treated in inpatient rehabilitation facilities: 2013-2018

OBJECTIVE

To describe the characteristics and outcomes of older (≥ 65 years of age) patients with a non-traumatic spinal cord injury (NTSCI) treated in inpatient rehabilitation facilities (IRFs) between 2013 and 2018.

DESIGN

Observational study.

SETTING

IRFs in the United States.

PARTICIPANTS

93,631 IRF Medicare stays for patients with NTSCI.

INTERVENTIONS

Not Applicable.

MAIN OUTCOME MEASURES

Length of stay, self-care and mobility function, discharge destination.

RESULTS

Between 2013 and 2018, the number of older (≥ 65 years of age) Medicare patients with a NTSCI treated in IRFs increased about 22.1 percent, from 14,149 to 17,275. In addition to the increase, patients' sociodemographic characteristics shifted to have a slightly higher percentage of patients aged 65-74 years, a slightly higher percentage of males, and slightly fewer patients who identified as Hispanic. There was also a trend of more patients in the higher acuity case-mix groups and comorbidities tiers, but the median length of stay remained 12 days across all years. The percent of patients discharged home or to a community-based setting varied from 73.7 to 75.2 without a trend, although discharge self-care and mobility function increased slightly across the years.

CONCLUSIONS

Between 2013 and 2018, the number of Medicare patients with NTSCI treated in IRFs increased by more than 22 percent. While patient complexity increased, the median length of stay remained 12 days across the years. Discharge self-care and mobility function increased slightly, and the percent of patients discharged home ranged from 73.7 to 75.2 across the years.

Epidemiology of Traumatic and Non-Traumatic Spinal Cord Injury in Korea: A Narrative Review

This review describes the incidence rates and trends of traumatic spinal cord injuries (TSCI) and non-traumatic spinal cord injuries (NTSCI) in South Korea. The incidence of NTSCI has increased more rapidly than that of TSCI in recent years. In 2007, TSCI was more common, but by 2020, NTSCI had surpassed TSCI, particularly in older individuals. While men have a higher incidence of both TSCI and NTSCI, the incidence difference by sex is greater in TSCI. The incidence rates of both TSCI and NTSCI are higher in older individuals, particularly those in their 70s and 80s. For TSCI, falls and traffic accidents are the most common causes, with falls being more prevalent in older adults. Cervical SCIs are the most common TSCI, especially in high-income countries like South Korea. Patients with NTSCI predominantly display paraplegia, which is usually associated with non-traumatic causes such as degenerative disorders and tumors. Higher rates of tetraplegia and paraplegia are observed with TSCI and NTSCI, respectively. The neurological levels of injury also differ between TSCI and NTSCI. Overall, SCIs are a growing concern in South Korea and there is a need for targeted interventions for their management and prevention, especially in older age groups.

Clinical characteristics, hospital course, and disposition of patients with nontraumatic spinal cord injury in a large private health care system in the United States

OBJECTIVES

To evaluate the clinical characteristics, hospital courses, outcomes after hospitalization, and factors associated with outcomes in patients with nontraumatic spinal cord injuries (NTSCI).

DESIGN

Retrospective analysis.

SETTING

A large for-profit United States health care system.

PARTICIPANTS

2807 inpatients with NTSCI between 2014 and 2020 were identified using International Classification of Disease codes.

MAIN OUTCOME MEASURE

Demographic, clinical characteristics, hospital course, and disposition data collected from electronic health record.

RESULTS

The mean age was 57.91 ± 16.41 years with 69.83% being male. Incomplete cervical level injury was the most common injury type, spinal stenosis was the most common diagnostic etiology and central cord syndrome was the most common clinical syndrome. The average length of stay was 9.52 ± 15.8 days, with the subgroup of 1308 (46.6%) patients who were discharged home demonstrating a shorter length of stay (6.42 ± 10.24 days). Falls were the most common hospital-acquired complication (n = 424, 15.11%) and 83 patients deceased. There were increased odds of non-home discharge among patients with the following characteristics: older age, Medicare insurance, non-black racial minority, increased Charlson Comorbidity Index (CCI), intensive care unit (ICU) stay, use of steroid or anticoagulant medications, and hospital-acquired pulmonary complications. Increased in-hospital mortality was observed in those with Medicaid insurance, ICU stay, increased CCI, diagnosis of degenerative spine disease, other unspecified level of injury, and hospital-acquired pulmonary complications.

CONCLUSIONS

NTSCI in this sample were predominantly incomplete cervical central SCIs. Increased CCI, ICU stay, and hospital-acquired pulmonary complications were associated with poorer outcomes after acute care hospitalization among patients with NTSCI.

A review of neurological health disparities in Peru

Peru is a historically unique and culturally diverse Latin American country. As a low-to-middle-income country (LMIC), Peru faces health implications from the spread of communicable diseases as well as a growing rate of noncommunicable diseases, both of which have been worsened by the recent COVID-19 pandemic's impact on the national health system. Over the past two decades, the country has aimed to improve health access for its population through various efforts described in this review. Despite this, there are notable neurological health disparities that exist today. This narrative review investigates such disparities through the leading neurological contributors to the national burden of disease in the country, including migraine headaches, cerebrovascular disease, and dementia. Public health disparities that contribute to other major neurological diseases in the country, including epilepsy, neurocysticercosis, Chagas disease, multiple sclerosis, traumatic brain injury, traumatic and non-traumatic spinal cord injuries are also investigated. We also explore potential solutions for overcoming the various neurological health disparities covered in this review that may be applied through public policies, as well as in similar LMICs in Latin America. By overcoming such disparities, the country may be able to successfully address the major contributors of neurological disease burden and create a healthcare environment that can sustainably and equitably improve health outcomes for Peruvian people.

Trends in the Incidence and Etiology of Non-Traumatic Spinal Cord Injury in Korea: A Nationwide Population-Based Study From 2007 to 2020

BACKGROUND

Although patients with non-traumatic spinal cord injury (NTSCI) have distinct epidemiological characteristics compared to those with traumatic spinal cord injury, no previous study has reported the incidence of NTSCI on a national scale in Korea. In this study, we examined the trend in incidence of NTSCI in Korea and described the epidemiological characteristics of patients with NTSCI using nationwide insurance data.

METHODS

National Health Insurance Service data were reviewed for the period from 2007 to 2020. The International Classification of Diseases, 10th revision, was used to identify patients with NTSCI. Inpatients with newly diagnosed NTSCI on their first admission during the study period were included. Crude incidence was calculated using the annual number of NTSCI cases divided by the mid-year population estimates. Age-specific incidence was calculated by dividing the number of cases in 10-year age groups by the total number of individuals in that age group. Age-adjusted incidence was calculated using direct standardization. Annual percentage changes were calculated using Joinpoint regression analysis. The Cochrane-Armitage trend test was conducted to examine the trends of NTSCI incidence according to the types or etiologies of NTSCI.

RESULTS

The age-adjusted incidence of NTSCI increased continuously from 24.11 per million in 2007 to 39.83 per million in 2020, with a significant annual percentage change (4.93%, P < 0.05). The age-specific incidence for those in their 70s and 80s or older was the highest and rapidly increased from 2007 to 2020. According to the types of paralysis in NTSCI, the proportion of tetraplegia decreased, whereas those of paraplegia and cauda equina increased significantly from 2007 to 2020. The proportion of degenerative diseases was the largest among all etiologies and increased significantly during the study period.

CONCLUSION

The annual incidence of NTSCI in Korea is increasing significantly, particularly among older adults. As Korea is one of the countries with most rapidly aging population in the world, these results have significant implications, indicating that preventive strategies and sufficient rehabilitation medical services are warranted for the population of older adults.

Incidence and mortality of spinal cord injury from 2008 to 2020: a retrospective population-based cohort study in the Piedmont Region, Italy

STUDY DESIGN

Retrospective population-based cohort study.

OBJECTIVES

To determine the incidence and mortality of spinal cord injuries (SCI) in the Piedmont Region of Northwestern Italy.

SETTING

Publicly-funded SCI rehabilitation centres in the Piedmont Region.

METHODS

Administrative databases were used to identify individuals at their first admission to a SCI rehabilitation centre from January 1st, 2008 to December 31st, 2020. Cases were stratified by age and aetiology (traumatic SCI, TSCI; non-traumatic SCI, NTSCI). Age- and aetiology-specific incidence rate and person-year mortality rates were calculated for each year. Case lethality was reported as deaths among prevalent cases for each year.

RESULTS

A total of 892 cases were identified (56.4% TSCI). The average annual crude incidence rate was 17.9 per million population, decreasing from 26.0 in 2008 to 10.8 in 2020. Young adults and the elderly represented the majority of TSCI and NTSCI cases, respectively. Of the 235 individuals who died during the study period, 58.3% had NTSCI. The mortality rate per 1000 person-years decreased from 16.3 in 2009 to 8.5 in 2020, while case lethality more than tripled (from 17.2 in 2009 to 57.1 in 2020).

CONCLUSIONS

We identified a decreasing trend in SCI incidence and mortality rates, with an increased case lethality over the study period, especially in NTSCI. Given these changes in the epidemiology of SCI, community services offered after rehabilitation should be strengthened to enhance their effectiveness and contribute to increased survival in this population.

Using Clinical Vignettes and a Modified Expert Delphi Panel to Determine Parameters for Identifying Non-Traumatic Spinal Cord Injury in Health Administrative and Electronic Medical Record Databases

OBJECTIVE

To obtain expert consensus on the parameters and etiologic conditions required to retrospectively identify cases of non-traumatic spinal cord injury (NTSCI) in health administrative and electronic medical record (EMR) databases based on the rating of clinical vignettes.

DESIGN

A modified Delphi process included 2 survey rounds and 1 remote consensus panel. The surveys required the rating of clinical vignettes, developed after chart reviews and expert consultation. Experts who participated in survey rounds were invited to participate in the Delphi Consensus Panel.

SETTING

An international collaboration using an online meeting platform.

PARTICIPANTS

Thirty-one expert physicians and/or clinical researchers in the field of spinal cord injury (SCI).

MAIN OUTCOME MEASURE(S)

Agreement on clinical vignettes as NTSCI. Parameters to classify cases of NTSCI in health administrative and EMR databases.

RESULTS

In health administrative and EMR databases, cauda equina syndromes should be considered SCI and classified as a NTSCI or TSCI based on the mechanism of injury. A traumatic event needs to be listed for injury to be considered TSCI. To be classified as NTSCI, neurologic sufficient impairments (motor, sensory, bowel, and bladder) are required, in addition to an etiology. It is possible to have both a NTSCI and a TSCI, as well as a recovered NTSCI. If information is unavailable or missing in health administrative and EMR databases, the case may be listed as "unclassifiable" depending on the purpose of the research study.

CONCLUSION

The Delphi panel provided guidelines to appropriately classify cases of NTSCI in health administrative and EMR databases.

Postoperative Acute-Phase Gait Training Using Hybrid Assistive Limb Improves Gait Ataxia in a Patient with Intradural Spinal Cord Compression Due to Spinal Tumors

Sensory ataxia due to posterior cord syndrome is a relevant, disabling condition in nontraumatic spinal cord dysfunction. Ataxic gait is a common symptom of sensory ataxia that restricts activities of daily living. A 70-year-old woman with severe sensory disturbance was diagnosed with intradural extramedullary spinal cord tumors found in the thoracic spine region (T8). Surgical management of the tumors was performed. The patient received gait training 20 days after surgery (postoperative acute phase) using a hybrid assistive limb (HAL). HAL is a wearable exoskeleton cyborg that provides real-time assistance to an individual for walking and limb movements through actuators mounted on the bilateral hip and knee joints. Walking ability was assessed using the 10 m walking test, which included evaluating walking speed, step length, and cadence in every session. To evaluate the immediate effects of HAL training, walking speed and step length were measured before and after the training in each session. During the 10 m walking test, gait kinematics and lower muscle activity were recorded using a motion capture system and wireless surface electromyography before the first session and after completion of all HAL sessions. After the HAL training sessions, improvement in the patient’s gait performance was observed in the gait joint angles and muscle activity of the lower limb. After 10 training sessions, we observed the following changes from baseline: walking speed (from 0.16 m/s to 0.3 m/s), step length (from 0.19 m to 0.37 m), and cadence (from 50.9 steps/min to 49.1 steps/min). The average standard deviations of the knee (from right, 7.31; left, 6.75; to right, 2.93; p < 0.01, left, 2.63; p < 0.01) and ankle joints (from right, 6.98; left, 5.40; to right, 2.39; p < 0.01, left, 2.18; p < 0.01) were significantly decreased. Additionally, walking speed and step length improved immediately after completing all the HAL training sessions. This suggests that HAL gait training might be a suitable physical rehabilitation program for patients with sensory ataxia causing dysfunctional movement of the lower limb.

Neurological Impairment Recovery in Surgically Treated Patients With Nontraumatic Spinal Cord Injury

The incidence of nontraumatic spinal cord injury (NTSCI) is reported to be higher than that of traumatic spinal cord injury in many countries, making it an area of growing significance.

Neuroprotective Mechanisms of Ginsenoside Rb1 in Central Nervous System Diseases

Panax ginseng and Panax notoginseng, two well-known herbs with enormous medical value in Asian countries, have a long usage history in China for the therapy of some diseases, such as stroke. Ginsenoside Rb1 is one of most important active ingredients in Panax ginseng and Panax notoginseng. In the last two decades, more attention has focused on ginsenoside Rb1 as an antioxidative, anti-apoptotic and anti-inflammatory agent that can protect the nervous system. In the review, we summarize the neuroprotective roles of ginsenoside Rb1 and its potential mechanisms in central nervous system diseases (CNSDs), including neurodegenerative diseases, cerebral ischemia injury, depression and spinal cord injury. In conclusion, ginsenoside Rb1 has a potential neuroprotection due to its inhibition of oxidative stress, apoptosis, neuroinflammation and autophagy in CNSDs and may be a promising candidate agent for clinical therapy of CNSDs in the future.

Neuroprotective Mechanisms of Ginsenoside Rb1 in Central Nervous System Diseases

Panax ginseng and Panax notoginseng, two well-known herbs with enormous medical value in Asian countries, have a long usage history in China for the therapy of some diseases, such as stroke. Ginsenoside Rb1 is one of most important active ingredients in Panax ginseng and Panax notoginseng. In the last two decades, more attention has focused on ginsenoside Rb1 as an antioxidative, anti-apoptotic and anti-inflammatory agent that can protect the nervous system. In the review, we summarize the neuroprotective roles of ginsenoside Rb1 and its potential mechanisms in central nervous system diseases (CNSDs), including neurodegenerative diseases, cerebral ischemia injury, depression and spinal cord injury. In conclusion, ginsenoside Rb1 has a potential neuroprotection due to its inhibition of oxidative stress, apoptosis, neuroinflammation and autophagy in CNSDs and may be a promising candidate agent for clinical therapy of CNSDs in the future.

Inpatient rehabilitation outcomes in neoplastic spinal cord compression vs. traumatic spinal cord injury

Objective: To compare neurological and functional outcomes, and complications of patients with neoplastic vs traumatic spinal cord injury (SCI) after in-patient rehabilitation.Design: This study is a retrospective analysis.Setting: In-patient rehabilitation unit of a tertiary research hospital.Participants: A total of 252 patients with a SCI were included; 43 with neoplastic SCI (mean age: 60.9 ± 15.7 years, 60.5% were males) and 209 with traumatic SCI (mean age: 43.1 ± 16.8 years, 71.3% were males).Outcome measures: Comparisons were made of demographic characteristics, etiology, American Spinal Injury Association (ASIA) impairment scale, functional independence measurement (FIM) and Functional Ambulation Categories (FAC) scores, length of stay (LOS), bladder independence, medical comorbidities and complications in both groups.Results: Patients with neoplastic SCI were significantly older than those with traumatic SCI (P < 0.01). No difference was present between the groups in terms of sex and lesion level (P > 0.05). Incomplete SCI was significantly higher in the neoplastic group when compared with the traumatic group (P < 0.01). The LOS was significantly shorter in the neoplastic group than traumatic group (34.8 ± 41.03 vs. 60.02 ± 53.1, P < 0.01). There were no differences in the admission FIM scores (69.3 ± 24.7 vs. 58.7 ± 18.9, P > 0.05), discharge FIM scores (82.1 ± 25.1 vs. 74.02 ± 23.3, P > 0.05) and FIM efficiencies (0.43 ± 0.72 vs. 0.36 ± 0.51, P > 0.05) for the neoplastic and traumatic groups, respectively. However, neoplastic SCI patients demonstrated lower FIM gains compared to traumatic patients (12.9 ± 11.9 vs. 15.4 ± 15.2, P < 0.05). During rehabilitation, urinary tract infection (48.4% vs. 69.4%) and decubitus ulcer (11.6% vs. 35.9%) were significantly more common in the traumatic group than the neoplastic group (P < 0.05).Conclusion: Neoplastic SCI patients who commonly present at rehabilitation units exhibit different characteristics from traumatic SCI patients but the rehabilitation results are similar. Similar functional development can be achieved in a shorter period of time with inpatient rehabilitation in the neoplastic SCI group.

Regenerative Rehabilitation and Stem Cell Therapy Targeting Chronic Spinal Cord Injury: A Review of Preclinical Studies

Stem cell medicine has led to functional recovery in the acute-to-subacute phase of spinal cord injury (SCI), but not yet in the chronic phase, during which various molecular mechanisms drastically remodel the tissue and render it treatment-resistant. Researchers are attempting to identify effective combinatorial treatments that can overcome the refractory state of the chronically injured spinal cord. Regenerative rehabilitation, combinatorial treatment with regenerative medicine that aims to elicit synergistic effects, is being developed. Rehabilitation upon SCI in preclinical studies has recently attracted more attention because it is safe, induces neuronal plasticity involving transplanted stem cells and sensorimotor circuits, and is routinely implemented in human clinics. However, regenerative rehabilitation has not been extensively reviewed, and only a few reviews have focused on the use of physical medicine modalities for rehabilitative purposes, which might be more important in the chronic phase. Here, we summarize regenerative rehabilitation studies according to the effector, site, and mechanism. Specifically, we describe effects on transplanted cells, microstructures at and distant from the lesion, and molecular changes. To establish a treatment regimen that induces robust functional recovery upon chronic SCI, further investigations are required of combinatorial treatments incorporating stem cell therapy, regenerative rehabilitation, and medication.

Epidemiology of non-traumatic spinal cord injury in Ireland - a prospective population-based study

Objective: To carry out a study of non-traumatic spinal cord injury (NTSCI) epidemiology in IrelandDesign: Prospective study of all new incident cases of NTSCI during 2017Setting: Republic of IrelandParticipants: All persons with a newly acquired NTSCIInterventions: NoneOutcome measures: Crude and age/sex specific incidences; ISCoS core dataset and non-traumatic dataset; population denominator was 2016 national census figures, adjusted to 2017.Results: Overall crude incidence of NTSCI in the Republic of Ireland in 2017 was 26.9 per million per year. Mean age at onset was 56.6 (SD 17.7) years. Females accounted for 51.2% of cases. Most frequent grade of ASIA impairment scale (AIS) was AIS D. Most common etiology was degenerate conditions (48.8%) followed by neoplastic (26.4%). The most common pattern of onset (51.2%) was lengthy (greater than one month).Conclusions: Incidence of NTSCI is more than double that for traumatic SCI in the Republic of Ireland. This suggests that the delivery of rehabilitation services to patients with spinal cord injuries requires prompt review and expansion.

Spinal cord injury and degenerative cervical myelopathy

Spinal cord injury (SCI) often results in impaired respiratory function. Paresis or paralysis of inspiratory and expiratory muscles can lead to respiratory dysfunction depending on the level and severity of the injury, which can affect the management and care of SCI patients. Respiratory dysfunction after SCI is more severe in high cervical injuries, with vital capacity (VC) being an essential indicator of overall respiratory health. Respiratory complications include hypoventilation, a reduction in surfactant production, mucus plugging, atelectasis, and pneumonia. Respiratory management includes mechanical ventilation and tracheostomy in high cervical SCI, while noninvasive ventilation is more common in patients with lower cervical and thoracic injuries. Mechanical ventilation can negatively impact the function of the diaphragm and weaning should start as soon as possible. Patients can sometimes be weaned from mechanical ventilation with assistance of electrical stimulation of the phrenic nerve or the diaphragm. Respiratory muscle training regimens may also improve patients' inspiratory function following SCI. Despite the critical advances in preventing, diagnosing, and treating respiratory complications, they continue to significantly affect persons living with SCI. Additional studies of interventions to reduce respiratory complications are likely to further decrease the morbidity and mortality associated with these injuries.

Central Recruitment: A process for engaging and recruiting individuals with spinal cord injury/disease in research at Toronto Rehabilitation Institute

CONTEXT

Insufficient recruitment is a barrier to research and limits statistical power. We describe an initiative aimed to streamline recruitment and consent processes for inpatients with spinal cord injury or disease (SCI/D) via implementation of a Central Recruitment (CR) process. The CR process adhered to ethical standards, reduced participant burden, and maximized research participation.

METHODS

In this CR process, the inpatient's nurse affirmed suitability for research approach based on fluency, cognition and health stability. A patient research liaison (PRL) was the sole contact for information regarding the research process, and introduced ongoing studies, screened for eligibility, and completed the consent process(es).

RESULTS

Over five and a half years, 1,561 inpatients with SCI/D were screened for eligibility upon admission, of whom 80% (1256/1561) were deemed suitable for the PRL approach. Of those suitable for the CR process, 80% (1001/1256) agreed to discuss current research opportunities, 46% (235/516) consented to participate in one or more studies, and 86% (856/1001) agreed to future research contact.

CONCLUSION

This process adhered to ethical procedures and reduced the burden of having multiple researchers approach each individual inpatient regarding research participation, with high consent rates for low-risk studies. Future evaluation of the process scalability is underway.

Separation from mechanical ventilation and survival after spinal cord injury: a systematic review and meta-analysis

BACKGROUND

Prolonged need for mechanical ventilation greatly impacts life expectancy of patients after spinal cord injury (SCI). Weaning outcomes have never been systematically assessed. In this systematic review and meta-analysis, we aimed to investigate the probability of weaning success, duration of mechanical ventilation, mortality, and their predictors in mechanically ventilated patients with SCI.

METHODS

We searched six databases from inception until August 2021 for randomized-controlled trials and observational studies enrolling adult patients (≥ 16 years) with SCI from any cause requiring mechanical ventilation. Titles and abstracts were screened independently by two reviewers. Full texts of the identified articles were then assessed for eligibility. Data were extracted independently and in duplicate by pairs of authors, using a standardized data collection form. Synthetic results are reported as meta-analytic means and proportions, based on random effects models.

RESULTS

Thirty-nine studies (14,637 patients, mean age 43) were selected. Cervical lesions were predominant (12,717 patients had cervical lesions only, 1843 in association with other levels' lesions). Twenty-five studies were conducted in intensive care units (ICUs), 14 in rehabilitative settings. In ICU, the mean time from injury to hospitalization was 8 h [95% CI 7-9], mean duration of mechanical ventilation 27 days [20-34], probability of weaning success 63% [45-78] and mortality 8% [5-11]. Patients hospitalized in rehabilitation centres had a greater number of high-level lesions (C3 or above), were at 40 days [29-51] from injury and were ventilated for a mean of 97 days [65-128]; 82% [70-90] of them were successfully weaned, while mortality was 1% [0-19].

CONCLUSIONS

Although our study highlights the lack of uniform definition of weaning success, of clear factors associated with weaning outcomes, and of high-level evidence to guide optimal weaning in patients with SCI, it shows that around two-thirds of mechanically ventilated patients can be weaned in ICU after SCI. A substantial gain in weaning success can be obtained during rehabilitation, with additional duration of stay but minimal increase in mortality. The study is registered with PROSPERO (CRD42020156788).

Clinical Presentation and Causes of Non-traumatic Spinal Cord Injury: An Observational Study in Emergency Patients

Introduction: Diagnosing non-traumatic spinal cord injury (NTSCI) is often challenging. However, clear discrimination from non-spinal pathologies, e.g., "myelopathy-mimics" (MMs), is critical in preventing long-term disability and death. In this retrospective study we (1) investigated causes of NTSCI, (2) identified clinical markers associated with NTSCI and (3) discuss implications for NTSCI management. Methods: Our sample consisted of 5.913 consecutive neurological and neurosurgical patients who were treated in our emergency department during a one-year period. Patients with a new or worsened bilateral sensorimotor deficit were defined as possible NTSCI. We then compared clinical and imaging findings and allocated patients into NTSCIs and MMs. Results: Of ninety-three included cases, thirty-six (38.7%) were diagnosed with NTSCI. Fifty-two patients (55.9%) were classified as MMs. In five patients (5.4%) the underlying pathology remained unclear. Predominant causes of NTSCI were spinal metastases (33.3%), inflammatory disorders (22.2%) and degenerative pathologies (19.4%). 58.6% of NTSCI patients required emergency treatment. Presence of a sensory level (p = <0.001) and sphincter dysfunction (p = 0.02) were the only significant discriminators between NTSCI and MMs. Conclusion: In our study, one-third of patients presenting with a new bilateral sensorimotor deficit had NTSCI. Of these, the majority required emergency treatment. Since there is a significant clinical overlap with non-spinal disorders, a standardized diagnostic work-up including routine spinal MRI is recommended for NTSCI management, rather than an approach that is mainly based on clinical findings.

Epidemiologic changes in nontraumatic spinal cord injury for the last 30 years (1990-2019) in South Korea

STUDY DESIGN

Retrospective descriptive study.

OBJECTIVES

To summarize epidemiologic data on nontraumatic spinal cord injury (NTSCI) for the last 30 years and compare these findings to data from individuals with traumatic spinal cord injury (TSCI).

SETTING

National Rehabilitation Center affiliated with the Ministry of Health and Welfare in Korea.

METHODS

The medical records of 948 individuals with NTSCIs were retrospectively reviewed. Three groups were created based on onset period (1990-1999, 2000-2009, 2010-2019) and six groups based on age (≤15, 16-30, 31-45, 46-60, 61-75, and ≥76 years). Pearson's chi-square and analysis of variance tests were used for statistical analysis.

RESULTS

The male-to-female ratio was 1.30:1 for NTSCI individuals and 3.47:1 for TSCI individuals. The mean age (standard deviation [SD]) at the time of injury increased from 38.7 (SD = 18.1) years in the 1990s to 55.5 (SD = 16.6) years in the 2010s (F = 44.597, p ≤ 0.001). Vertebral column degenerative disorder was the primary cause of injury in 28.9% of the cases, and the most common neurologic level was T12-L2. Paraplegia occurred in 74.6% of cases, and tetraplegia in 25.4% of cases. The proportion of NTSCI individuals increased from 11.2% to 29.3% during the observation period.

CONCLUSIONS

The proportion of NTSCI among total spinal cord injuries has increased in Korea over the last 30 years (1990-2019). Compared to individuals with TSCI, those with NTSCI had a higher age at onset, with different male-to-female ratios. Our study is the most comprehensive investigation of NTSCI in Korea, and our findings can inform research directions and medical guidelines.

Postprandial Hypotension and Spinal Cord Injury

Postprandial hypotension (PPH) is defined as a fall of ≥20 mmHg in systolic blood pressure (SBP) or a SBP of <90 mmHg after having been >100 mmHg before the meal within two hours after a meal. The prevalence of PPH among persons with spinal cord injury (SCI) is unknown. Ambulatory blood pressure measurement was performed in 158 persons with SCI, 109 men, median age was 59.1 years (min.:13.2; max.: 86.2). In total, 78 persons (49.4%) had PPH after 114 out of 449 meals (25.4%). The median change in SBP during PPH was −28 mmHg (min.: −87; max.: −15 mmHg) and 96% of the PPH episodes were asymptomatic. The occurrence of PPH was correlated to older age (p = 0.001), level of injury (p = 0.023), and complete SCI (p = 0.000), but not, gender or time since injury. Further studies are needed to elucidate if PPH contributes to the increased cardiovascular mortality in the SCI population.

Models of Care Delivery from Rehabilitation to Community for Spinal Cord Injury: A Scoping Review

Spinal cord injury (SCI) is a chronic condition that results in high healthcare utilization and lifetime cost across the care continuum. In the absence of a standardized model of care delivery for SCI in western countries such as Canada, a scoping review of the literature was performed to identify and summarize existing international SCI models of care delivery. Four databases were searched using key words and subject headings for concepts such as: "spinal cord injury," "delivery of healthcare," "model of care," "patient care planning," and "care pathway." Title, abstract, and full text review were competed by two independent reviewers. A combined total of 46 peer-reviewed and gray literature articles were included. No single SCI model of care has been adopted across different countries internationally. However, optimal attributes of models of care were identified, including the importance of having multidisciplinary SCI specialty care providers along the continuum, provision of rural SCI services and outreach, integration of primary care, peer mentoring, and using a hub and spokes model of care. These findings inform the future development of an SCI model of care, which ideally would serve all geographical locations and span the continuum of care, improving the health status and quality of life of persons with SCI.

Problems people with spinal cord injury experience accessing help with bowel care when hospitalised outside a specialist spinal injury service

AIMS AND OBJECTIVES

To examine the nature of problems experienced by people with spinal cord injury (SCI) when accessing help to maintain recommended bowel regimes while hospitalised outside a specialist spinal injury service.

BACKGROUND

Bowel dysfunction is one particularly undesirable aspect of life with a SCI, with constipation and incontinence common.

DESIGN

Descriptive qualitative.

METHODS

Accounts of problems encountered in hospitals in New South Wales Australia collected during interviews with 11 people living with SCI and 12 responses provided by spinal clinicians via an online survey were subjected to thematic analysis. The COREQ guidelines were followed for reporting.

RESULTS

There were similarities across data collected from both sources. Individuals with SCI described instances where their bowel care needs did not fit with the pace and processes in acute hospitals. The clinician data pointed to a failure of healthcare professionals to assist people with SCI to maintain bowel care regimes recommended by specialist spinal services. Both groups described times when bowel care received was unreliable and fragmented, along with reports of staff who were unwilling and/or unable to provide the assistance required. Many and varied physical and psychosocial repercussions for individuals were associated with these system failures. In some instances, rather than restoring health, being admitted to hospital represented a significant health risk.

CONCLUSION

A failure of hospital systems to meet the bowel care needs of people with SCI when hospitalised outside a specialist spinal unit was identified. System and individual factors contributed to these problems, hence addressing them requires both system and individual responses.

RELEVANCE TO CLINICAL PRACTICE

If this problem is left unaddressed, the health and quality of life of people with SCI will continue to be compromised. Nursing scope of practice needs to be clarified and communicated to nurses outside specialist spinal injury units in relation to their role in maintaining bowel care regimes recommended for their patients by spinal specialists, and nurses need to ensure they possess the skills required. To allocate the time needed to provide this care, individual nurses need the support of the whole nursing team, including managers who are prepared to arrange additional staff when needed.

Retrospective study of functional outcomes and disability after non-ischaemic vascular causes of spinal cord dysfunction

Objective: Describe demographic characteristics, functional outcomes and disability following rehabilitation for non-ischemic vascular spinal cord dysfunction (SCDys).Design: Retrospective, open cohort, case series.Setting: Tertiary rehabilitation unit, Victoria, Australia.Participants: Patients with non-ischemic vascular SCDys admitted over a 21-year-period (01/01/1995-31/12/2015) were identified using International Classification of Diseases codes.Outcome Measures: Demographic characteristics, etiology, neurologic classification, length of stay (LOS), and complications. On admission and discharge, the following were collected: functional independence measure (FIM) motor subscale, details on bowel, bladder, mobility, living arrangement, and support services.Results: 36 patients (female 58%; mean age 69 ± 16 years) were identified. The main causes of non-ischemic vascular SCDys were epidural hematoma (39%), dural arteriovenous fistula (17%), and arteriovenous malformation (11%). 22 cases (61%) were iatrogenic. Most (86%) had incomplete paraplegia. Urinary tract infection was the most common complication (64%). Median LOS in rehabilitation was 68 days. Significant improvement in FIM motor scores was observed from admission (median 25, interquartile range [IQR] 20-38) to discharge (median 69, IQR 38-77) (P < 0.001). On discharge, 4 patients (11%) walked >100 m unaided, 6 (17%) walked >100 m with assistive device, 10 (28%) walked >10 m with assistive device, 15 (41%) were wheelchair dependent and 1 (3%) patient remained non-mobile. 20 patients (56%) were discharged home, 8 (22%) to nursing home, and 8 (22%) transferred to another hospital.Conclusion: Most patients returned home with significantly improved functional outcomes compared to rehabilitation admission, but with the majority having ongoing major disabilities based on FIM motor scores.

Posterior cord syndrome: Demographics and rehabilitation outcomes

Context/Objectives: To describe demographics, clinical characteristics, and functional outcomes of patients with incomplete spinal cord injuries and posterior cord syndrome (PCS).Design: Five-year retrospective case series.Setting: Spinal cord injury (SCI) rehabilitation unit at a Level 1 tertiary university medical center.Participants: 9 patients with incomplete cord injuries diagnosed with PCS admitted to rehabilitation within the past 5 years.Outcome measures: Functional Independence Measure (FIM) motor scores, length of stay (LOS), discharge disposition.Results: Incidence of PCS was 2% with an average age of 62.0 years. The most common etiology for PCS was spinal cord compression from localized tumors (78%). Seven (78%) patients had paraparesis. All patients had an American Spinal Injury Association impairment scale (AIS) classification of AIS D. SCI-related complications most commonly included: neuropathic pain (78%), spasticity (44%), and neurogenic bladder (78%). Average LOS on the rehabilitation unit was 28 days. Average admission and discharge FIM motor scores were significantly improved (P = 0.001) from 41 to 65, respectively. Two-thirds (67%) of patients were able to walk at least 150 feet with a rolling walker prior to discharge. Most (78%) patients were discharged to home. Continence improved from admission to discharge from 22% vs 56% (bladder) and 67% vs 78% (bowel).Conclusions: We can conclude that PCS most often results in paraparesis due to tumor compression. Typical SCI-related medical complications are encountered. These patients often experience significant functional improvements during SCI rehabilitation with the majority also having bladder and bowel continence allowing them to return home at discharge.

Mesenchymal stem cell-derived exosomes: therapeutic opportunities and challenges for spinal cord injury

Spinal cord injury (SCI) often leads to serious motor and sensory dysfunction of the limbs below the injured segment. SCI not only results in physical and psychological harm to patients but can also cause a huge economic burden on their families and society. As there is no effective treatment method, the prevention, treatment, and rehabilitation of patients with SCI have become urgent problems to be solved. In recent years, mesenchymal stem cells (MSCs) have attracted more attention in the treatment of SCI. Although MSC therapy can reduce injured volume and promote axonal regeneration, its application is limited by tumorigenicity, a low survival rate, and immune rejection. Accumulating literature shows that exosomes have great potential in the treatment of SCI. In this review, we summarize the existing MSC-derived exosome studies on SCI and discuss the advantages and challenges of treating SCI based on exosomes derived from MSCs.

The Advent of Spinoplastics: Easing the Growing Global Disease Burden of Spinal Injury

Epidemiologic studies have demonstrated a growing global disease burden of pathologies affecting the vertebral column. Allograft or implant-based reconstruction and fusion surgeries have been the mainstay of treatment. The efficacy of various surgical methods and the reliability of instrumentation or implants to execute these surgeries continue to be debated in the literature. Advances such as the free-tissue transfer have improved postoperative measures; however, they add high operative risk. The advent of spinoplastics introduces a practical surgical model to augment these spinal surgeries using vascularized bone grafts. As this technique becomes more widespread, it can be utilized to ease the growing disease burden that spinal injury places on both patients and the health care system. Ultimately, it will ameliorate strains on health care resources, reduce health care costs, and improve patient outcomes and quality of life.

Dynamic body-weight support to boost rehabilitation outcomes in patients with non-traumatic spinal cord injury: an observational study

Background

Dynamic body-weight support (DBWS) may play an important role in rehabilitation outcomes, but the potential benefit among disease-specific populations is unclear. In this study, we hypothesize that overground therapy with DBWS during inpatient rehabilitation yields greater functional improvement than standard-of-care in adults with non-traumatic spinal cord injury (NT-SCI).

Methods

This retrospective cohort study included individuals diagnosed with NT-SCI and undergoing inpatient rehabilitation. All participants were recruited at a freestanding inpatient rehabilitation hospital. Individuals who trained with DBWS for at least three sessions were allocated to the experimental group. Participants in the historical control group received standard-of-care (i.e., no DBWS). The primary outcome was change in the Functional Independence Measure scores (FIM_gain).

Results

During an inpatient rehabilitation course, participants in the experimental group (n = 11), achieved a mean (SD) FIM_gain of 48 (11) points. For the historical control group (n = 11), participants achieved a mean (SD) FIM_gain of 36 (12) points. From admission to discharge, both groups demonstrated a statistically significant FIM_gain. Between groups analysis revealed no significant difference in FIM_gain (p = 0.022; 95% CI 2.0–22) after a post hoc correction for multiple comparisons. In a secondary subscore analysis, the experimental group achieved significantly higher gains in sphincter control (p = 0.011: 95% CI 0.83–5.72) with a large effect size (Cohen’s d 1.19). Locomotion subscores were not significantly different (p = 0.026; 95% CI 0.37–5.3) nor were the remaining subscores in self-care, mobility, cognition, and social cognition.

Conclusions

This is the first study to explore the impact of overground therapy with DBWS on inpatient rehabilitation outcomes for persons with NT-SCI. Overground therapy with DBWS appears to significantly improve functional gains in sphincter control compared to the standard-of-care. Gains achieved in locomotion, mobility, cognition, and social cognition did not meet significance. Findings from the present study will benefit from future large prospective and randomized studies.

Gait Training Using a Wearable Robotic Device for Non-Traumatic Spinal Cord Injury: A Case Report

Introduction

We aimed to report the clinical evaluation results of gait training with the Honda Walking Assist Device^® (HWAT) in a patient with spinal cord injury (SCI).

Patients and Methods

A 63-year-old male with SCI (grade D on the American Spinal Injury Association Impairment Scale) underwent 20 HWAT sessions over 4 weeks. The self-selected walking speed (SWS), mean step length, cadence, 6-minute walking test (6MWT), Walking Index for SCI score, SCI Functional Ambulation Inventory gait score, American Spinal Injury Association Impairment Scale grade, neurological level, upper and lower extremity motor scores, modified Ashworth Scale, Penn Spasm Frequency Scale, and Spinal Cord Independence Measure version III were measured on admission, at the start of HWAT, at 2 and 4 weeks post-HWAT, and at discharge. Three-dimensional kinematic gait analysis and electromyographic assessments were performed before and after HWAT.

Results

The patient safely completed 20 HWAT sessions. We found improvements above the clinically meaningful difference in SWS and 6MWT as well as increased hip extension, ankle plantar- and dorsi-flexion range of motion and increased hip extensor, abductor, adductor, and ankle plantar flexor muscle activity.

Discussion

The SWS improved more markedly during the HWAT intervention, exceeding the minimal clinically important difference (0.10 to 0.15 m/s) in walking speed for people with SCI until discharge. Moreover, the 6MWT results at 2 weeks after the start of HWAT exceeded the cutoff value (472.5 m) for community ambulation and remained at a similar value at discharge.

Conclusion

The walking distance (6MWT) and the walking speed (SWS) both demonstrated clinically important improvements following 20 treatment sessions which included HWAT.

Incidence of Acquired Nontraumatic Spinal Cord Injury in Finland: A 4-Year Prospective Multicenter Study

OBJECTIVES

To evaluate the incidence and epidemiologic characteristics of acquired nontraumatic spinal cord injury (NTSCI) in Finland.

DESIGN

Prospective 4-year epidemiologic multicenter study.

SETTING

Two of the 3 spinal cord injury (SCI) centers in Finland responsible for acute care, immediate rehabilitation, and lifelong follow-up for all SCI patients in a population of 3,073,052 (as of 2013).

PARTICIPANTS

All newly diagnosed NTSCI patients (N=430) admitted to Tampere University Hospital between 2012 and 2015 and Oulu University Hospital between 2013 and 2016 based on the evaluation of the designated rehabilitation teams. Patients with NTSCI resulting from congenital etiologies or progressive neurologic diseases were excluded.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Incidence and variables, according to the International SCI Core Data Set and the International Standards for Neurological Classification of SCI, including etiology and the severity of injury.

RESULTS

The incidence of NTSCI was 54.1 per million per year. NTSCI was more common in men (n=260, 60.5%) than women (n=170, 39.5%). The mean age was 62.0±14.6 years old. Degenerative causes were the most common etiology (n=219, 50.9%), followed by malignant (n=88, 20.5%) and benign (n=41, 9.5%) neoplasms. The injury resulted in tetraplegia in 177 patients (41.1%) and paraplegia in 249 patients (57.9%). American Spinal Injury Association Impairment Scale grade D injuries were common, with an incidence of 71% (n=304). Specialized inpatient rehabilitation was needed in 44% (n=189) of the cases.

CONCLUSIONS

There are no previous studies on the epidemiology of NTSCI in Finland, and international reporting has been limited. The incidence of NTSCI in our study was substantially higher than in most previous studies, which was likely owing to our study including individuals with less severe lesions who did not require inpatient rehabilitation.

Etiology and Outcomes of Spinal Cord Infarct: A Case Series From a Level 1 Trauma Center

STUDY DESIGN

Retrospective study.

OBJECTIVES

To evaluate the demographics, prevalence, etiology, severity, and outcomes of spinal cord injuries (SCIs) resulting from ischemic infarction.

METHODS

All patients with SCI and a diagnosis of cord infarct who were admitted to the inpatient rehabilitation unit at a level 1 trauma center from January 2003 to January 2014 were identified using an administrative billing database. Outcomes measures were evaluated.

RESULTS

Among 685 unique SCI patients who were identified, 30 (4.4%) had SCI due to spinal ischemic infarction. The mean age was 59 years (range 17-80 years). Fifty percent of patients had ASIA (American Spinal Injury Association) A and B severity. Most common causes were the following: 6 (20%) abdominal aortic aneurysm (AAA) repairs, 6 (20%) arteriovenous fistulas, and 6 (20%) with an unknown cause. Surgical complications led to 4 (13.3%) cord infarcts and was associated with a higher severity of injury (P = .02) compared with other etiologies. Other causes included systemic hypotension, AAA rupture, trauma, diabetic ketoacidosis, and after radiation therapy. At follow-up, 6 (20%) of patients were able to ambulate normally without assistance, 7 (23.3%) were ambulating with assistance, and 17 (56.7%) were still wheelchair bound. Clinical improvement in ambulatory status was noted in 6 (20%) patients and was associated with less severe initial injury (P = .02).

CONCLUSIONS

While the existing literature associates spinal cord infarction with aortic pathologies and surgery, these caused less than 30% of cases, while nonaortic surgical complications were associated with the most severe injuries. Outcomes were worse than previously reported in the literature.

SRμCT Reveals 3D Microstructural Alterations of the Vascular and Neuronal Network in a Rat Model of Chronic Compressive Thoracic Spinal Cord Injury

The complex pathology of chronic thoracic spinal cord compression involves vascular and neuroarchitectural repair processes that are still largely unknown. In this study, we used synchrotron radiation microtomography (SRμCT) to quantitatively characterize the 3D temporal-spatial changes in the vascular and neuronal network after chronic thoracic spinal cord compression in order to obtain further insights into the pathogenesis of this disease and to elucidate its underlying mechanisms. Direct 3D characterization of the spinal cord microvasculature and neural microstructure of the thoracic spinal cord was successfully reconstructed. The significant reduction in vasculature and degeneration of neurons in the thoracic spinal cord visualized via SRμCT after chronic compression were consistent with the changes detected by immunofluorescence staining. The 3D morphological measurements revealed significant reductions of neurovascular parameters in the thoracic spinal cord after 1 month of compression and became even worse after 6 months without relief of compression. In addition, the distinct 3D morphological twist and the decrease in branches of the central sulcal artery after chronic compression vividly displayed that these could be the potential triggers leading to blood flow reduction and neural deficits of the thoracic spinal cord. Our findings propose a novel methodology for the 3D analysis of neurovascular repair in chronic spinal cord compression, both qualitatively and quantitatively. The results indicated that compression simultaneously caused vascular dysfunction and neuronal network impairment, which should be acknowledged as concurrent events after chronic thoracic spinal cord injury. Combining neuroprotection with vasoprotection may provide promising therapeutic targets for chronic thoracic spinal cord compression.

A Narrative Review of Pediatric Nontraumatic Spinal Cord Dysfunction

This article provides a narrative review of seven key issues relevant to pediatric onset of spinal cord damage not due to trauma, or spinal cord dysfunction (SCDys). The first topic discussed is terminology issues. There is no internationally accepted term for spinal cord damage not due to trauma. The implications of this terminology issue and an approach to addressing this are discussed. Second, a brief history of SCDys is presented, focusing on conditions relevant to pediatrics. Third, the classification of SCDys is outlined, based on the International Spinal Cord Injury Data Sets for Non-Traumatic Spinal Cord Injury. Following this, a summary is given of the epidemiology of pediatric SCDys, primarily focused on the incidence, prevalence, and etiology, with a comparison to traumatic spinal cord injury. Next, important clinical rehabilitation principles unique to children with SCDys are highlighted. Then important prevention opportunities for SCDys in children are discussed. Finally, trends, challenges, and opportunities regarding research in SCDys are mentioned.

Trajectories of Rehabilitation across Complex Environments (TRaCE): design and baseline characteristics for a prospective cohort study on spinal cord injury and acquired brain injury

PURPOSE

Trajectories of Rehabilitation across Complex Environments (TRaCE), a consented prospective cohort study, addresses a critical need to better understand access to the healthcare system after acute treatment and specialist inpatient rehabilitation for acquired disability. It is expected that this study will produce new knowledge on access to healthcare through the linkage of administrative, survey, and spatial datasets on the one cohort. This paper outlines the study design and baseline characteristics of the cohort.

METHODS

The TRaCE cohort is comprised of 165 inpatients who are currently being followed up for 12 months after discharge from specialist rehabilitation for acquired brain injury (ABI) and spinal cord injury (SCI). This project combines a data linkage framework on health service use with a prospective survey on psychosocial wellbeing, geographical information systems to examine spatial accessibility to services, and qualitative interviews with a sub-cohort on experiences of service access.

CONCLUSION

Ultimately, TRaCE will have strong translational impact on strategies for more targeted interventions to improve the healthcare system and support individuals with acquired disabilities in the long-term.

Psychological morbidity and chronic disease among adults with nontraumatic spinal cord injuries: a cohort study of privately insured beneficiaries

BACKGROUND

Individuals living with a spinal cord injury (SCI) are at heightened risk for a number of chronic health conditions such as secondary comorbidities that may develop or be influenced by the injury, the presence of impairment, and/or the process of aging. However, very little is known about the development of secondary comorbidities among individuals living with nontraumatic SCIs (NTSCIs).

PURPOSE

The objective of this study was to compare the prevalence of psychological morbidities and chronic diseases among adults with and without NTSCIs.

DESIGN

Cross-sectional cohort from a nationwide insurance claims database.

METHODS

Privately insured beneficiaries were included if they had an ICD-9-CM diagnostic code for a NTSCI and accompanying diagnosis of paraplegia, tetraplegia, quadriplegia, or unspecified paralysis (n=10,006). Adults without SCIs were also included (n=779,545). Prevalence estimates of common psychological morbidities, chronic diseases, and multimorbidity (≥2 conditions) were compared.

RESULTS

Adults with NTSCIs had a higher prevalence of adjustment reaction (11.4% vs 5.1%), anxiety disorders (23.7% vs 14.5%), depressive disorders (31.6% vs 9.6%), drug dependence (3.4% vs 0.8%), episodic mood disorders (15.9% vs 5.4%), central pain syndrome (1% vs 0%), psychogenic pain (1.9% vs 0.2%), dementia (5.2% vs 1.5%), and psychological multimorbidity (29.3% vs 11.6%), as compared to adults without SCIs. The adjusted odds of psychological multimorbidity were 1.86 (95% confidence interval: 1.76-2.00). Adults with NTSCIs also had a significantly higher prevalence of all chronic diseases and chronic disease multimorbidity (73.5% vs 18%), except HIV/AIDS. After propensity matching for age, education, race, sex, and the chronic diseases (n=7,419 matched pairs), there was still a higher prevalence of adjustment reaction (9.2% vs 5.4%), depressive symptoms (23.5% vs 16.0%), central pain syndrome (1% vs 0%), psychogenic pain (1.5% vs 0.3%), and psychological multimorbidity (20.2% vs 17.4%) among adults with NTSCIs.

CONCLUSIONS

Adults with NTSCIs have a significantly increased prevalence of psychological morbidities, chronic disease, and multimorbidity, as compared to adults without SCIs. Efforts are needed to facilitate the development of improved clinical screening algorithms and early interventions to reduce risk of disease onset/progression in this higher risk population.

Utilizing three dimensional clinical gait analysis to optimize mobility outcomes in incomplete spinal cord damage

BACKGROUND

Three-dimensional gait analysis (3DGA) has not previously been considered by consensus panels of spinal cord experts for use in studies of patients with spinal cord damage (SCD), yet it is frequently used in other neurological populations, such as stroke and cerebral palsy.

RESEARCH QUESTION

How does 3DGA impairment based reporting guide individualised clinical decision-making in people with incomplete SCD?

METHODS

Retrospective open cohort case series recruited 48 adults with incomplete SCD (traumatic or non-traumatic spinal cord dysfunction) referred to the Clinical Gait Analysis Service (CGAS), Melbourne, Australia. Three-dimensional gait data were used to identify gait impairments by the multidisciplinary clinical team. Gait patterns were classified using the plantarflexor-knee extension couple index and the Gait Profile Score (GPS). The reason for referral and the recommendations made post-3DGA were collated in decision trees to extrapolate the potential value of 3DGA in decision making for targeted intervention in this population.

RESULTS

Participants with SCD generally walked at a reduced gait speed. When grouped by neurological level, the tetraplegia group had a significantly lower GPS, but no specific gait patterns emerged. Participants were primarily referred to the CGAS to direct clinical intervention decisions. The most frequent recommendation following 3DGA was the prescription of an ankle foot orthosis and in some cases, the recommendation was incongruent with the referrer's proposed intervention.

SIGNIFICANCE

3DGA can provide specific guidance in management plans for gait of patients with incomplete SCD and may help to avoid inappropriate or unnecessary interventions. This sample of patients referred to the CGAS demonstrates its clinical utility in guiding clinicians in their decision making to target individualised intervention.

Challenges in rehabilitation of patients with nontraumatic spinal cord dysfunction due to tumors : A narrative review

The incidence of cancer-associated non-traumatic spinal cord dysfunction is rising due to population aging and better cancer treatment. The overall benefit of rehabilitation in specialized facilities for traumatic spinal cord dysfunction has been confirmed many times. Because of their fragility and multiple comorbidities cancer patients still face challenges to complete rehabilitation in the spinal rehabilitation facilities. In this narrative review we describe specific aspects, challenges in rehabilitation and opportunities to improve care. A literature search was performed in the PubMed database from 1 January 1978 to 30 November 2018. The focus was to find publications that discuss challenges and opportunities for rehabilitation of patients with non-traumatic spinal cord dysfunction due to a tumor. Most publications described the benefits of rehabilitation in specialized facilities. There were only few publications about survival and functional outcomes after rehabilitation for this patient population. Overall benefits including fewer complications associated with spinal cord dysfunction, less pain and depression, and better quality of life were shown. Within the past decades increasing number of publications revealed a growing interest for this group of patients. Despite major progress in cancer treatment, patients still have a limited vital prognosis and access to specialized rehabilitation units because of the concerns about the medical complexity. Patients with spinal cord tumors can benefit in areas of functionality, mood, quality of life, and survival from inpatient rehabilitation programs, in spite of the increased medical comorbidities.

Pericytes Act as Key Players in Spinal Cord Injury

Spinal cord injury results in locomotor impairment attributable to the formation of an inhibitory fibrous scar, which prevents axonal regeneration after trauma. The scarcity of knowledge about the molecular and cellular mechanisms involved in scar formation after spinal cord lesion impede the design of effective therapies. Recent studies, by using state-of-the-art technologies, including genetic tracking and blockage of pericytes in combination with optogenetics, reveal that pericyte blockage facilitates axonal regeneration and neuronal integration into the local neural circuitry. Strikingly, a pericyte subset is essential during scarring after spinal cord injury, and its arrest results in motor performance improvement. The arising knowledge from current research will contribute to novel approaches to develop therapies for spinal cord injury. We review novel advances in our understanding of pericyte biology in the spinal cord.

Spinal Cord Injury From Spinal Tumors: Prevalence, Management, and Outcomes

BACKGROUND

With the aging population in the United States, it can be anticipated that the prevalence of spinal cord injuries (SCIs) and cancer will increase. Primary or metastatic spine tumors sit at a unique intersection of these 2 realms. Our objective was to evaluate the prevalence, outcomes, and complications after the management of SCI arising from spinal tumors.

METHODS

In the present retrospective evaluation, all patients with SCI and a diagnosis of primary or metastatic spinal cancer who had been admitted to the inpatient rehabilitation unit at a level 1 trauma center from January 2003 to January 2014 were evaluated. The demographic data (age, sex, race/ethnicity), tumor characteristics, American Spinal Injury Association score, and complications were evaluated.

RESULTS

A total of 757 SCI entries were identified, and 685 unique patients met our inclusion criteria. Of those, 81 had SCIs due to spinal tumors (11.8% of all SCIs and 19.2% of nontraumatic SCIs). Most tumors were located in the thoracic region (65.4%) and were primary central nervous system in origin (21.0%), including meningioma (7.4%), schwannoma (3.7%), and ependymoma (2.5%). The next most common origins of the spinal tumors were metastases from the lung (17.3%), prostate (9.9%), kidney (8.6%), lymphoma (7.4%), and multiple myeloma (7.4%). Of these patients, 76.5% underwent surgical management, with a complications rate of 61.3%. The overall mortality rate at the latest follow-up examination was 63.0%.

CONCLUSIONS

SCI associated with spinal tumor is often managed surgically and associated with high rates of complications. The present study has demonstrated longer survival rates compared with the existing data.

Sepsis in mechanically ventilated patients with spinal cord injury: a retrospective analysis

Study Design

Retrospective analysis.

Objectives

Sepsis, one of the most frequent and life-threatening complications on intensive care units (ICUs), is associated with a need for mechanical ventilation (MV) as well as adverse respiratory outcomes in hospitalized individuals. However, it has poorly been investigated in patients with spinal cord injury (SCI); a population at high risk for pulmonary and infectious complications.

Setting

Spinal Cord Injury Center, Heidelberg University Hospital.

Methods

Over a 5-year period, 182 individuals with SCI requiring MV during their ICU stay were analyzed. Data assessment included demographics, medical characteristics, focus and causative pathogen of sepsis, length of stay, weaning outcomes, and mortality.

Results

Sepsis was recorded in 28 patients (15%), containing a subgroup of individuals suffering from infectious SCI and co-occurring primary sepsis with Staphylococcus aureus as the predominant microorganism. In most individuals, sepsis was found as secondary complication, which was associated with pulmonary foci, Gram-negative bacteria, and high mortality. More than 80% of individuals with secondary sepsis required induction of MV due to respiratory failure. Furthermore, respiratory failure was found to be independent of sepsis focus, spectrum of causative pathogens, SCI etiology, or severity of injury. Subsequent weaning from the respirator was prolonged in more than 90% with a high proportion of weaning failure.

Conclusions

Sepsis predominantly occurs as a secondary complication after SCI and is associated with detrimental outcomes. Although the lung is frequently affected as a failing organ, not all sepsis foci are pulmonary. Awareness of both actual sepsis focus and causative pathogen is central to initiate an adequate sepsis treatment.

Characteristics of Non-traumatic Spinal Cord Dysfunction in Canada Using Administrative Health Data

Background: There is a paucity of studies using administrative health data to examine the epidemiology, health care utilization, and outcomes for non-traumatic spinal cord dysfunction (NTSCD). Objective: The purpose of this study is to characterize discrete NTSCD cohorts using decision algorithms with Canadian health administrative databases. Method: Data were provided by the Canadian Institute for Health Information that included all acute care hospital, day surgery, ambulatory, and inpatient rehabilitation records of patients with neurological impairment between April 1, 2004 and March 31, 2011. Diagnostic codes for neurological impairment and NTSCD etiology were used to identify cases and classify 3 NTSCD groups (most likely, probable, and possible). Logistic regression identified factors related to inpatient rehabilitation admission within 7 days of discharge among the preferred group. Results: The most likely NTSCD group (n = 6,362) was significantly older and had a greater proportion of women and individuals with cauda equina lesions compared to the other 2 NTSCD groups (probable [n = 2,777] and possible [n = 11,179]; ps < .001). Factors associated with the likelihood of an inpatient rehabilitation admission included being older (odds ratio [OR], 1.01; 95% CI, 1.00-1.01), being female (OR, 1.18; 95% CI, 1.06-1.32), having paraplegia diagnosis compared to cauda equina (OR, 1.24; 95% CI, 1.09-1.41), residing in an urban area compared to a rural area (OR, 1.34; 95% CI, 1.13-1.58), having degenerative etiology compared to other (OR, 1.59; 95% CI, 1.41-1.80), and having an MRI on record compared to not (OR = 1.57; 95% CI, 1.39-1.76). Conclusion: Administrative data allow for ongoing surveillance of a population in a relatively cost-effective manner. Advancing our knowledge of NTSCD epidemiology, health outcomes, and system performance can inform policy and system planning.

Validation of Algorithm to Identify Persons with Non-traumatic Spinal Cord Dysfunction in Canada Using Administrative Health Data

Background: Administrative health data, such as the hospital Discharge Abstract Database (DAD), can potentially be used to identify patients with non-traumatic spinal cord dysfunction (NTSCD). Algorithms utilizing administrative health data for this purpose should be validated before clinical use. Objective: To validate an algorithm designed to identify patients with NTSCD through DAD. Method: DAD between 2006 and 2016 for Southern Alberta in Canada were obtained through Alberta Health Services. Cases of NTSCD were identified using the algorithm designed by the research team. These were then validated by chart review using electronic medical records where possible and paper records where electronic records were unavailable. Measures of diagnostic accuracy including sensitivity, specificity, and positive and negative predictive values and 95% confidence intervals (CI) were computed. Results: Two hundred and eighty cases were identified to have both the administrative codes for neurological impairments and NTSCD etiology. Twenty-eight cases were excluded from analysis as 5 had inadequate medical record information, 17 had traumatic spinal cord injury, and 6 were considered "other" non-spinal cord conditions. Measures of diagnostic accuracy that were computed were sensitivity 97% (95% CI, 94%-98%), specificity 60% (95% CI, 47%-73%), positive predictive value (PPV) 92% (95% CI, 88%-95%), and negative predictive value (NPV) 80% (95% CI, 65%-90%). The most prevalent etiologies were degenerative (36.9%), infection (19.0%), oncology malignant (15.1%), and vascular (10.3%). Conclusion: Our algorithm has high sensitivity and PPV and satisfactory specificity and NPV for the identification of persons with NTSCD using DAD, though the limitations for using this method should be recognized.