Classification Of Spinal Cord Injury Research Articles

Exoskeletal-Assisted Walking During Acute Inpatient Rehabilitation Enhances Recovery for Persons with Spinal Cord Injury-A Pilot Randomized Controlled Trial.

Spinal cord injury (SCI) negatively impacts individuals' functional independence, and motor and sensory function. Intense walking training has been shown to facilitate recovery for individuals with chronic SCI. Powered robotic exoskeletons provide therapists with a tool that allows them to conduct walking training with less therapist effort as compared to conventional walking training. Exoskeletal-assisted walking (EAW) has been studied in the chronic SCI population with preliminary reports showing benefits in mobility, health, and quality-of-life outcomes. However, few reports have studied EAW's benefits in the acute (<90 days post) SCI population at a time when neural plasticity is most dynamic and modifiable. The purpose of the study was to conduct a pilot randomized controlled trial (RCT) to understand the effects of incorporated EAW in acute inpatient rehabilitation (AIR) for individuals with SCI on functional, motor, and sensory recovery. The study outcomes included the Spinal Cord Independence Measure (SCIM) III and International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) motor and sensory scores that were assessed by unblinded assessors. We also recorded EAW session data, including adverse events, walking and up time, step counts, Borg Rating of Perceived Exertion (RPE), and compliance with scheduled EAW training. From August 2019 to July 2022, 16 participants completed the AIR with incorporated EAW, and 12 completed the standard AIR, all with SCI and preserved leg function within 90 days post-injury. During each session, the AIR with incorporated EAW group averaged 34.3 (±9.4) min of up time, 25.4 (±7.7) min of walk time, and 536 (±157) steps. Analysis via two-by-two mixed-effects models showed significant increases in the SCIM total score and ISNCSCI total motor and sensory scores over time for the AIR with incorporated EAW group [SCIM total score: F(1, 26) = 5.59, p = 0.03; total motor score: F(1, 26) = 8.06, p < 0.01; total sensory score: F(1, 19.2) = 5.08, p = 0.04], outperforming the standard AIR group. The AIR with incorporated EAW group showed 13, 14, and 22 points higher changes in the SCIM total score, total motor score, and total sensory score (respectively) by discharge compared with the standard AIR group. Incorporating EAW into AIR may facilitate functional, motor, and sensory recovery for individuals with SCI during AIR better than standard AIR. However, the study had a limited sample size. Further studies are needed to clarify the effects of EAW in AIR.

Effectiveness and efficiency of telerehabilitation on functionality after spinal cord injury: A matched case-control study.

Telerehabilitation in spinal cord injury (teleSCI) is a growing field that can improve access to care and health outcomes in patients with spinal cord injury (SCI). The clinical effectiveness of teleSCI is not known. To compare independence in activities of daily living and mobility capacity in patients following teleSCI and matched controls undergoing traditional rehabilitation. Matched case-control study. TeleSCI occurring in home setting (cases) versus traditional rehabilitation on inpatient unit (controls). Forty-two consecutive patients with SCI followed with teleSCI were compared to 42 historical rehabilitation inpatients (controls) matched for age, time since injury to rehabilitation admission, level of injury (paraplegia/tetraplegia), complete or incomplete injury, and etiology (traumatic/nontraumatic). The teleSCI group (n = 42) was also compared to the complete cohort of historical controls (n = 613). The teleSCI group followed home-based telerehabilitation (3.5 h/day, 5 days/week, 67 days average duration) and historical controls followed in-person rehabilitation. The Functional Independence Measure (FIM), the Spinal Cord Independence Measure (SCIM) and the Walking Index for Spinal Cord Injury (WISCI). We formally compared gains, efficiency and effectiveness. International Standards for Neurological Classification of Spinal Cord Injury and the American Spinal Injury Association Impairment Scale (AIS) were used. The teleSCI group (57.1% nontraumatic, 71.4% paraplegia, 73.8% incomplete, 52.4% AIS grade D) showed no significant differences compared with historical controls in AIS grades, neurological levels, duration, gains, efficiency and effectiveness in FIM, SCIM, or WISCI, although the teleSCI cohort had significantly higher admission FIM scores compared with the complete cohort of historical controls. TeleSCI may provide similar improvements in mobility and functional outcomes as traditional rehabilitation in medically stable patients (predominantly with paraplegia and motor incomplete SCI) when provided with appropriate support and equipment.

Penile vibratory stimulation in men with spinal cord injury: an educational video demonstration

To demonstrate the different techniques used to perform successful penile vibratory stimulation (PVS) to induce ejaculation in men with spinal cord injuries (SCIs). A video demonstration of the PVS procedure performed in men with SCIs using the FertiCare 2.0 medical vibrator. Major University Medical Center. Men with SCIs. Spinal cord injury is the leading cause of anejaculation in young men. After SCIs, most of these men will need a method of assisted ejaculation to achieve biological fatherhood. In this study, a newly designed and tested vibrator (FertiCare 2.0) was used to induce ejaculation. The initial assessment of each patient included a standard history, physical examination, level of injury determination using the International Standards for Neurological Classification of Spinal Cord Injury as well as assessment of the hip flexor reflex and the bulbocavernosus reflex. Patients with a level of injury at or rostral to T6 were pretreated with 10-40 mg of sublingual nifedipine to manage autonomic dysreflexia. A single vibrator was applied to the dorsum, or frenulum, of the glans penis. Stimulation is delivered in 2-minute increments to a maximum of 10 minutes per visit. Application of two vibrators or abdominal electrical stimulation concurrently with PVS was used in select patients. Ejaculated semen was collected in a sterile cup and examined after liquefaction. Bladder preparation using sperm wash medium was performed in patients suspected of experiencing retrograde ejaculation. Successful ejaculation after performing the PVS procedure in men with SCIs. Penile vibratory stimulation was successful in 86% of men whose level of injury was T10 or rostral. The total motile sperm count in antegrade ejaculates produced using PVS was >5 million (lower limit considered for intrauterine insemination) in 71% of ejaculates. No complications because of PVS were observed in 3,700 trials performed by our group and none in the patients presented in this video. Penile vibratory stimulation is a safe and effective method for the management of ejaculatory dysfunction in men with SCIs. Penile vibratory stimulation can be performed by the male partner after an initial evaluation by a specialized provider, and the ejaculate can be used to perform home insemination.

Integrated Machine Learning Approach for the Early Prediction of Pressure Ulcers in Spinal Cord Injury Patients.

(1) Background: Pressure ulcers (PUs) substantially impact the quality of life of spinal cord injury (SCI) patients and require prompt intervention. This study used machine learning (ML) techniques to develop advanced predictive models for the occurrence of PUs in patients with SCI. (2) Methods: By analyzing the medical records of 539 patients with SCI, we observed a 35% incidence of PUs during hospitalization. Our analysis included 139 variables, including baseline characteristics, neurological status (International Standards for Neurological Classification of Spinal Cord Injury [ISNCSCI]), functional ability (Korean version of the Modified Barthel Index [K-MBI] and Functional Independence Measure [FIM]), and laboratory data. We used a variety of ML methods-a graph neural network (GNN), a deep neural network (DNN), a linear support vector machine (SVM_linear), a support vector machine with radial basis function kernel (SVM_RBF), K-nearest neighbors (KNN), a random forest (RF), and logistic regression (LR)-focusing on an integrative analysis of laboratory, neurological, and functional data. (3) Results: The SVM_linear algorithm using these composite data showed superior predictive ability (area under the receiver operating characteristic curve (AUC) = 0.904, accuracy = 0.944), as demonstrated by a 5-fold cross-validation. The critical discriminators of PU development were identified based on limb functional status and laboratory markers of inflammation. External validation highlighted the challenges of model generalization and provided a direction for future research. (4) Conclusions: Our study highlights the importance of a comprehensive, multidimensional data approach for the effective prediction of PUs in patients with SCI, especially in the acute and subacute phases. The proposed ML models show potential for the early detection and prevention of PUs, thus contributing substantially to improving patient care in clinical settings.

The revised zone of partial preservation (ZPP) in the 2019 International Standards for Neurological Classification of Spinal Cord Injury: ZPP applicability in incomplete injuries

Study designConsensus process.ObjectivesTo provide a reference for the Zone(s) of Partial Preservation (ZPP) in the 2019 International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) and analyze the initial impact of applicability of the revised ZPPs. Revisions include the use of ZPPs in selected incomplete injuries (in addition to prior use in sensorimotor complete injuries). Specifically, the revised motor ZPPs are applicable bilaterally in injuries with absent voluntary anal contraction (VAC) and the revised sensory ZPP for a given side is applicable if deep anal pressure (DAP), light touch and pin prick sensation in S4-5 are absent on that side.SettingCommittee with 16 ISNCSCI experts and datasets from the European Multicenter Study about Spinal Cord Injury (EMSCI).MethodsOccurrence frequencies of applicable ZPPs were determined in an EMSCI cohort consisting of two ISNCSCI examinations from 665 individuals with traumatic SCI.ResultsMotor ZPPs were derived in 35.2% of all datasets of incomplete injuries, while sensory ZPPs are much less frequent (1.0%). Motor ZPPs are applicable in all American Spinal Injury Association Impairment Scale (AIS) B datasets (mean ZPP length: 0.9 ± 1.0 segments), in 55.4% of all AIS C datasets (ZPP length: 11.8 ± 8.2 segments) and in 9.9% of the AIS D datasets (ZPP length: 15.4 ± 7.9 segments).ConclusionsThe revised ZPP allows for determining motor ZPPs in approximately 1/3 of all incomplete injuries. The broadened applicability enables the use of ZPPs beyond complete injuries for complementary description of residual functions in more individuals.SponsorshipN/A

Anterior atlantoaxial motion preservation fixation technique for axis complex fractures (odontoid process with Hangman’s fractures) and technique notes

This study aims to investigate the feasibility and efficacy of anterior atlantoaxial motion preservation fixation (AMPF) in treating axis complex fractures involving the odontoid process fracture and Hangman’s fractures with C2/3 instability. A retrospective study was conducted on eight patients who underwent AMPF for axis complex fractures at the General Hospital of Central Theater Command from February 2004 to October 2021. The types of axis injuries, reasons for injuries, surgery time, intraoperative blood loss, spinal cord injury classification (American Spinal Injury Association, ASIA), as well as complications and technical notes, were documented. This study included eight cases of type II Hangman’s fracture, five cases of type II and three cases of type III odontoid process fracture. Five patients experienced traffic accidents, while three patients experienced falling injuries. All patients underwent AMPF surgery with an average intraoperative blood loss of 288.75 mL and a duration of 174.5 min. Two patients experienced dysphagia 1 month after surgery. The patients were followed up for an average of 15.63 months. One case improved from C to E in terms of neurological condition, three cases improved from D to E, and four cases remained at E. Bony fusion and Atlantoaxial Motion Preservation were successfully achieved for all eight patients. AMPF is a feasible and effective way for simultaneous odontoid process fracture and Hangman’s fractures with C2/3 instability, while preserving atlantoaxial movement.

Restoration of Over-Ground Walking via Non-Invasive Neuromodulation Therapy: A Single-Case Study

Spinal cord injuries (SCI) can result in sensory and motor dysfunctions, which were long considered permanent. Recent advancement in electrical neuromodulation has been proven to restore sensorimotor function in people with SCI. These stimulation protocols, however, were mostly invasive, expensive, and difficult to implement. In this study, transcutaneous electrical stimulation (tES) was used to restore over-ground walking of an individual with 21 years of chronic paralysis from a cervical SCI. After a total of 66 weeks of rehabilitation training with tES, which included standing, functional reaching, reclined sit-up, treadmill walking, and active biking, significant improvement in lower-limb volitional movements and overall light touch sensation were shown as measured by the International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) score. By the end of the study, the participant could walk in a 4-m walking test with the aid of a walking frame and ankle–foot orthoses. The successful sensorimotor recovery of our study participant sheds light on the future of non-invasive neuromodulation treatment for SCI paralysis.

Spasticity Predicts Motor Recovery for Patients with Subacute Motor Complete Spinal Cord Injury.

A motor complete spinal cord injury (SCI) results in the loss of voluntary motor control below the point of injury. Some of these patients can regain partial motor function through inpatient rehabilitation; however, there is currently no biomarker to easily identify which patients have this potential. Evidence indicates that spasticity could be that marker. Patients with motor complete SCI who exhibit spasticity show preservation of descending motor pathways, the pathways necessary for motor signals to be carried from the brain to the target muscle. We hypothesized that the presence of spasticity predicts motor recovery after subacute motor complete SCI. Spasticity (Modified Ashworth Scale and pendulum test) and descending connectivity (motor evoked potentials) were tested in the rectus femoris muscle in patients with subacute motor complete (n = 36) and motor incomplete (n = 30) SCI. Motor recovery was assessed by using the International Standards for Neurological Classification of Spinal Cord Injury and the American Spinal Injury Association Impairment Scale (AIS). All measurements were taken at admission and discharge from inpatient rehabilitation. We found that motor complete SCI patients with spasticity improved in motor scores and showed AIS conversion to either motor or sensory incomplete. Conversely, patients without spasticity showed no changes in motor scores and AIS conversion. In incomplete SCI patients, motor scores improved and AIS conversion occurred regardless of spasticity. These findings suggest that spasticity represents an easy-to-use clinical outcome that might help to predict motor recovery after severe SCI. This knowledge can improve inpatient rehabilitation effectiveness for motor complete SCI patients. ANN NEUROL 2023.

Validation of a New Tool to Detect and Characterize Spinal Cord Injury in the Acute Trauma Patient: The Montreal Acute Classification of Spinal Cord Injury.

Retrospective validation protocol. The International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) is the most comprehensive tool for classifying spinal cord injuries (SCI), but it is not adapted for the evaluation of trauma patients. The objective is to develop and validate a streamlined tool, the Montreal Acute Classification of Spinal Cord Injury (MAC-SCI) that can be integrated in the evaluation of trauma patients to detect and characterize traumatic SCI (tSCI). The completion rate of the ISCNSCI during initial evaluation after tSCI was estimated at a Level-1 trauma center specialized in SCI care. Using a modified Delphi technique, we designed the MAC-SCI, a new tool to detect and characterize the severity grade and level of SCI in the polytrauma patient. A cohort consisting of 35 consecutive tSCI patients with complete ISNCSCI documentation was used to validate the MAC-SCI. The severity grade and neurological level of injury (NLI) were assessed using the MAC-SCI, and compared to those obtained with the ISNCSCI. Only 33% of 148 patients admitted after a tSCI had a complete ISNCSCI performed at initial presentation. The MAC-SCI retains 53 of the 134 elements from the ISNCSCI. There was a 100% concordance in severity grade between the MAC-SCI and ISNCSCI. The NLI were within 2 levels between the MAC-SCI and ISNCSI for 100% of patients. The MAC-SCI is a streamlined tool that accurately detects and characterizes tSCI in the acute trauma setting. It could be implemented in trauma protocols to guide the management of SCI patients. Level III Diagnostic criteria.

Acute assessment of spinal cord injury in New South Wales: A retrospective study of current practice in two spinal cord injury referral centers

Introduction Interventions provided in the early phases after spinal cord injury (SCI) may improve neurological recovery and provide for best possible functional outcomes. Knowing this relies on early and clear documentation of the level and grade of the spinal cord injury. Guidelines advocate for early documentation of neurological status within 72 h of injury to allow early prognostication and to help guide initial management. It is unclear whether this is current practice in New South Wales (NSW). Methods Patients with acute SCI who were admitted to two SCI referral centers during 2018–2019 in NSW were included. Data relating to documentation of neurological status, timing of imaging, surgery and transfer to spinal cord injury center were collected and summarized using descriptive statistics. Results Only 18 percent of patients had an acceptable neurological examination according to the International Standards for Classification of Spinal Cord Injury (ISNCSCI) within 72 h of injury (either not done, or unable to determine the neurological level of injury). At the first neurological examination, the neurological level of injury and grade was unable to be determined in 26.8% of patients and 29.9% of patients respectively. At discharge from acute care and transfer to rehabilitation, the neurological level was undetermined in 28.9% of patients and grade undetermined in 26.8%. ISNCSCI examination was most commonly performed by spinal rehabilitation doctors after patients were discharged from the intensive care unit (ICU). Conclusions Documentation of neurological level and grade of SCI within 72 h of injury is not being performed in the large majority of this cohort, which may impede evaluation of neurological improvement in response to acute treatment, and hinder prognostication.

Concordance between needle electromyography and manual muscle test findings for muscles with motor grades 0 and 1.

When it is difficult to determine whether a muscle is grade 0 or 1, manual muscle test (MMT) accuracy can be further improved by using needle electromyography (EMG) as a supplementary and confirmatory examination tool. To evaluate concordance between needle EMG and MMT findings for key muscles with motor grades 0 and 1 on the International Standards of Neurological Classification of Spinal Cord Injury (ISNCSCI) examination, and to potentially improve the prognosis for grade 0 muscles with proven muscle activity based on needle EMG findings. A retrospective analysis. Inpatient tertiary rehabilitation facility. Not applicable. One hundred seven patients with spinal cord injury (SCI) admitted for rehabilitation (n = 1218 key muscles, grades 0 or 1). Inter-rater reliability between MMTs and needle EMG was analyzed using Cohen's kappa coefficient (κ). A Mantel Haenszel linear-by-linear association chi-square testwas used to determine whether the presence of motor unit action potentials (MUAPs) in muscles graded 0 on the initial MMT at admission was associated with MMT grades at discharge and readmission. Moderate-to-substantial agreement between needle EMG and MMT findings was observed (κ = 0.671, p < .01). Concerning key upper and lower extremity muscles, moderate and substantial agreement was identified, respectively. The lowest agreement was noted for C6 muscles. During follow up, 68.8% of muscles with proven MUAPs showed improved motor grades. At initial assessment, distinguishing between motor grades 0 and 1 is imperative because motor grade 1 muscles are more likely to have a better prognosis for improvement. Moderate-to-substantial agreement was observed between MMT and needle EMG findings. The MMT is a reliable method of muscle grading, yet needle EMG may be of value in certain clinical situations to evaluate for the presence of MUAPs when evaluating motor function.

Zrychlená verze Mezinárodních standardů pro neurologickou klasifikaci míšního poranění (E­‑ISNCSCI)

Zrychlená verze Mezinárodních standardů pro neurologickou klasifikaci míšního poranění (E­‑ISNCSCI)

Post-traumatic stress disorder among individuals with traumatic spinal cord injury in Nepal: a cross-sectional study.

Cross-sectional study OBJECTIVES: To identify the prevalence of posttraumatic stress disorder (PTSD) among the individuals with traumatic spinal cord injury (TSCI) and to examine the relationships between demographic and clinical characteristics, and PTSD. Spinal Injury Rehabilitation Center (SIRC) and Dhulikhel Hospital, Kathmandu University Hospital (DH, KUH), Kavrepalanchowk, Nepal. Individuals above 18 years of age with TSCI of at least one month from trauma and admitted to SIRC and DH, KUH from June 2019 to May 2021 were included. The specific stress version of the PostTraumatic Stress Disorder Checklist (PCL), was utilized. To classify the neurological status of TSCI individuals, International Standard for Neurological Classification of Spinal Cord Injury (ISNCSCI) was used. Hierarchical multiple regression analysis between independent variables and normalized PCL score was done to evaluate the predictors of PTSD. Among 163 patients, the overall prevalence of PTSD was 27%, and the mean PCL score was 36 ± 13.9. Factors predictive of PTSD included gender, family type, ethnicity, and literacy rate. No significant association was found between the clinical characteristics and PTSD. PTSD appears to be considerably prevalent among individuals with TSCI in Nepal. Females, individuals from nuclear families, individuals with lower literacy, and individuals from lower caste are significantly vulnerable to developing PTSD. However, clinical characteristics do not appear to be influential in the development of PTSD.

V11-09 PENILE VIBRATORY STIMULATION (PVS): THE METHOD OF CHOICE FOR ANEJACULATION AFTER SPINAL CORD INJURY

You have accessJournal of UrologyCME1 Apr 2023V11-09 PENILE VIBRATORY STIMULATION (PVS): THE METHOD OF CHOICE FOR ANEJACULATION AFTER SPINAL CORD INJURY Emad Ibrahim Emad IbrahimEmad Ibrahim More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003337.09AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Spinal cord injury (SCI) is the leading cause of anejaculation in young men. After SCI 90% of men with SCI will need a method of assisted ejaculation to achieve biological fatherhood. Penile vibratory stimulation (PVS) was popularized in 1994 after the production of the first vibrator specifically designed for semen retrieval in men with SCI. The success of this device was based on a calculated amplitude of 2.5 mm which was proven to be optimal for successfully producing an ejaculate. PVS is safe, reliable, can be performed by the male partner at home after an initial evaluation by a health care provider and yields the best sperm quality.A newly designed vibrator was produced in 2019 and was tested by a group of international experts for safety and efficacy. The study concluded the device was safe and effective in inducing ejaculation in men suffering from anejaculation after SCI. METHODS: Initial encounter: standard history, physical exam and level of injury determination using the International Standards for Neurological Classification of Spinal Cord Injury were performed. In addition, assessment of Hip Flexor Reflex and Bulbocavernosus Reflex was performed. Procedure: Patients with a level of injury at or rostral to T6 were pretreated with 10-40 mg of sublingual nifedipine to mange autonomic dysreflexia. The patient lied supine on the exam table and the vibrator was applied to the dorsum or frenulum of the glans penis. Stimulation was delivered in 2-minute increments to a maximum of 10 minutes per visit. Stimulation using 2 vibrators (Sandwich technique) or with abdominal electrical stimulation can be performed in select patients. Semen: Ejaculated semen was collected in a sterile cup and a semen analysis was performed after liquefaction. Bladder preparation using sperm wash medium was performed in patients suspected of having retrograde ejaculation. RESULTS: PVS was successful in 86% of men whose level of injury was T10 or rostral. A total of 3,698 PVS procedures were successfully performed by our group. The total motile sperm count in antegrade ejaculates produced by PVS was >5 million (lower limit considered for IUI) in 71% of ejaculates. CONCLUSIONS: PVS is a safe and effective method to manage anejaculation in men with SCI. Sperm can be obtained non surgically from most men with SCI. Sufficient sperm are available for simple insemination procedures. PVS should be considered as the method of choice for semen retrieval in this patient population. Source of Funding: Paralyzed Veterans of America (PVA) Educational Grant #877 © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e1001 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Emad Ibrahim More articles by this author Expand All Advertisement PDF downloadLoading ...

188 American Spinal Injury Association (ASIA) Impairment Scale (AIS) Conversion Underestimates Neurological Recovery Following Traumatic Spinal Cord Injury

INTRODUCTION: The predominant tool used in the evaluation of neurological outcomes following spinal cord injury (SCI) is the American Spinal Injury Association (ASIA) Impairment Scale (AIS), calculated within the International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI). However, there are significant clinical and functional differences within AIS grades A-E that can be better captured by ISNCSCI 0-100 full motor scores. METHODS: 55 patients with acute traumatic SCI who underwent surgery were retrospectively analyzed as part of a prospective cohort study, Transforming Research and Clinical Knowledge in SCI (TRACK-SCI). Clinical, radiographical and treatment parameters were collected, including AIS grades and full motor scores on presentation and discharge, Brain and Spinal Injury Center (BASIC) scores. Multivariable analysis was utilized to evaluate predictors of neurological recovery utilizing AIS grade and motor scores as endpoints. RESULTS: Improvement of at least 1 AIS grade from presentation was noted in 27% of patients (mean improvement of 0.3 AIS grades, p &lt; 0.001) upon discharge. Improvement of total motor scores was noted in 67% with a mean recovery of 8.4 points. The discordance between rate of AIS grade conversion and motor score recovery was greatest in patients with initial AIS grade D (16% vs 72%, respectively). Total motor score improvement was greatest for patients with initial AIS grade C, with a mean improvement of 20 points. Utilizing multivariate analysis, BASIC score and initial total motor score were significant predictors of motor score recovery. However, no variables were prognostic when utilizing AIS conversion as the endpoint. CONCLUSIONS: AIS conversion underestimates true degree of functional improvement following SCI. Changes in full motor score is a more robust outcome metric in the evaluation of factors prognostic of neurological recovery following injury.

The International Standards for Neurological Classification of Spinal Cord Injury: Classification Accuracy and Challenges.

Successful utilization of the International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) requires a comprehensive understanding of its rules, terminology, and several complex concepts. There have been no studies investigating classification accuracy since the newest ISNCSCI revision (2019). To evaluate classification accuracy of SCI professionals using the 2019 ISNCSCI edition, identify common mistakes and areas of confusion, and assess associations between experience in ISNCSCI classification and performance. Members of the International Spinal Cord Society (ISCoS) and attendees of the ISCoS Annual Scientific Meeting 2021 were invited to complete an online survey that included six ISNCSCI cases to classify. A total of 107 persons completed the survey, with overall classification accuracy of 74.6%. Accuracy was highest for injury completeness (95.3%) and sensory level (91.1%) and lowest for motor zone of partial preservation (ZPP; 54.7%) and ASIA Impairment Scale (AIS) grade (57.3%). Newer concepts, including the appropriate documentation of non-SCI conditions and classification of ZPP in incomplete injuries, contributed to several common errors. There was a significant association between overall classification accuracy and self-rated experience in the ISNCSCI classification (p = .017). Experience with the ISNCSCI examination, experience in SCI medicine, and occupation were not found to be significantly associated with overall classification accuracy. Classification accuracy of an international cohort of SCI professionals was modest but greater than previous reports. Knowledge deficits about the 2019 ISNCSCI updates are prevalent and contribute to common classification errors. Further training in the utilization of the ISNCSCI is needed.

Canadian Spine Society

# Abstract 57. Radiographic reporting in adolescent idiopathic scoliosis: Is there a discrepancy comparing radiologists’ reports and surgeons’ assessments? {#article-title-2} Cobb angle measurement is the standard method for quantification of scoliosis in adolescent idiopathic scoliosis (AIS),

A Novel Application of Deep Learning (Convolutional Neural Network) for Traumatic Spinal Cord Injury Classification Using Automatically Learned Features of EMG Signal.

In this study, a traumatic spinal cord injury (TSCI) classification system is proposed using a convolutional neural network (CNN) technique with automatically learned features from electromyography (EMG) signals for a non-human primate (NHP) model. A comparison between the proposed classification system and a classical classification method (k-nearest neighbors, kNN) is also presented. Developing such an NHP model with a suitable assessment tool (i.e., classifier) is a crucial step in detecting the effect of TSCI using EMG, which is expected to be essential in the evaluation of the efficacy of new TSCI treatments. Intramuscular EMG data were collected from an agonist/antagonist tail muscle pair for the pre- and post-spinal cord lesion from five Macaca fasicularis monkeys. The proposed classifier is based on a CNN using filtered segmented EMG signals from the pre- and post-lesion periods as inputs, while the kNN is designed using four hand-crafted EMG features. The results suggest that the CNN provides a promising classification technique for TSCI, compared to conventional machine learning classification. The kNN with hand-crafted EMG features classified the pre- and post-lesion EMG data with an F-measure of 89.7% and 92.7% for the left- and right-side muscles, respectively, while the CNN with the EMG segments classified the data with an F-measure of 89.8% and 96.9% for the left- and right-side muscles, respectively. Finally, the proposed deep learning classification model (CNN), with its learning ability of high-level features using EMG segments as inputs, shows high potential and promising results for use as a TSCI classification system. Future studies can confirm this finding by considering more subjects.

Identification of clinical and rehabilitation groups among patients with cervical tetraplegia

BACKGROUND:Spinal cord injury at the cervical level often leads to a severe neurological deficit, such as tetraplegia (International Standards for Neurological Classification of Spinal Cord Injury) and gross functional disorders. Currently, methods of differentiated rehabilitation strategy are developed, taking into account the needs of the patients.&#x0D; AIMS:This study aimed to examine the clinical heterogeneity of patients with a cervical injury and to form appropriate clinical and rehabilitation groups based on common relevant rehabilitation goals.&#x0D; MATERIALS AND METHODS:We examined 190 patients with severe cervical myelopathy C4D1level aged 1860 years in whom changes in clinical and functional status were monitored for 57 years. The rehabilitation program was standardized and based on existing national clinical guidelines for physical rehabilitation in patients with spinal cord injuries.&#x0D; RESULTS:The greatest changes were in patients with motor levels C6and C7.Patients with cervical tetraplegia, according to the criterion of functional and motor homogeneity, can be divided into four clinical and rehabilitation groups: patients with a high level of damage to C4C6(functionally dependent), patients with a low level of damage to C7D1(functionally independent), patients with complete motor damage (types A and B), and patients with incomplete motor damage (types C and D).&#x0D; CONCLUSIONS:The allocation of clinical and rehabilitation groups allows the prediction of the results and outcomes of rehabilitation. A timely rehabilitation prognosis can improve the quality of life of patients with cervical tetraplegia and their families and contribute to their timely adaptation to society.

Neurogenic Lower Urinary Tract Dysfunction in the First Year After Spinal Cord Injury: A Descriptive Study of Urodynamic Findings.

We aimed to provide a real-world description of neurogenic lower urinary tract dysfunction within the first year after spinal cord injury with a focus on unfavorable urodynamic parameters that are associated with urological morbidity. Urodynamic investigations from 97 patients with traumatic or ischemic acute spinal cord injury and managed according to the European Association of Urology Guidelines on Neuro-Urology were analyzed at a single university spinal cord injury center at 1 month, 3 months, 6 months, and 12 months after injury. Unfavorable urodynamic parameters were defined as detrusor overactivity in combination with detrusor sphincter dyssynergia, maximum storage detrusor pressure of 40 cm H2O or higher, bladder compliance less than 20 mL/cm H2O, and vesicoureteral reflux of any grade. One or more unfavorable urodynamic parameter was observed in 87 out of 97 patients (90%) within the first year after spinal cord injury. Eighty-eight percent of the patients showed detrusor overactivity with detrusor sphincter dyssynergia, 39% a maximum storage detrusor pressure of 40 cm H2O or higher, and 7% vesicoureteral reflux. No patient developed a low-compliance bladder. Using a standardized urodynamic follow-up schedule, we found unfavorable urodynamic parameters in a majority of the population within the first year after spinal cord injury. As early treatment based on urodynamic findings might reduce the risk of deterioration of upper and lower urinary tract function, thereby improving long-term outcomes, there is need for further research regarding recommendations for a urodynamic follow-up schedule during the first year after spinal cord injury.