Effects of end-effector robot-assisted gait training on gait ability, muscle strength, and balance in patients with spinal cord injury.

BACKGROUND: There is no randomized controlled study about the effects of end-effector robot-assisted gait training (RAGT) in patients with spinal cord injury (SCI). OBJECTIVE: To examine the effects of end-effector RAGT on gait and balance abilities in SCI. METHODS: Thirty-one patients were randomly assigned to the RAGT (Morning Walk®, Curexo, Seoul, South Korea) or conventional therapy (CT) group. Patients were assessed using the 10-meter walk test (10MWT), 6-minute walk test (6mWT), lower extremity motor score (LEMS) and proprioception, Berg Balance Scale (BBS), Walking Index for Spinal Cord Injury-II (WISCI-II), and mobility category of Spinal Cord Independence Measure-III. RESULTS: All clinical outcome measures significantly improved in both groups. The BBS and WISCI-II were significantly improved in the RAGT group compared to the CT group. In the RAGT group, pre-LEMS and pre-WISCI-II of the 10MWT improved group and pre-BBS of the 6mWT improved group were higher than those of the 10MWT non-improved and 6mWT non-improved group, respectively. CONCLUSION: End-effector RAGT and CT in patients with incomplete SCI could lead to improvements in gait ability, lower extremity muscle strength, balance, proprioception, and mobility. Additionally, end-effector RAGT could improve balance and gait abilities substantially better than CT.

Whole-genome sequencing reveals an association between small genomic deletions and an increased risk of developing Parkinson's disease.

Single-nucleotide variants (SNVs) associated with Parkinson's disease (PD) have been investigated mainly through genome-wide association studies. However, other genomic alterations, including copy number variations, remain less explored. In this study, we conducted whole-genome sequencing of primary (310 PD patients and 100 healthy individuals) and independent (100 PD patients and 100 healthy individuals) cohorts from the Korean population to identify high-resolution small genomic deletions, gains, and SNVs. Global small genomic deletions and gains were found to be associated with an increased and decreased risk of PD development, respectively. Thirty significant locus deletions were identified in PD, with most being associated with an increased PD risk in both cohorts. Small genomic deletions in clustered loci located in the GPR27 region had high enhancer signals and showed the closest association with PD. GPR27 was found to be expressed specifically in brain tissue, and GPR27 copy number loss was associated with upregulated SNCA expression and downregulated dopamine neurotransmitter pathways. Clustering of small genomic deletions on chr20 in exon 1 of the GNAS isoform was detected. In addition, we found several PD-associated SNVs, including one in the enhancer region of the TCF7L2 intron, which exhibited a cis-acting regulatory mode and an association with the beta-catenin signaling pathway. These findings provide a global, whole-genome view of PD and suggest that small genomic deletions in regulatory domains contribute to the risk of PD development.

Posterior reversible encephalopathy syndrome in a patient with metastatic breast cancer: A case report.

BACKGROUND: Posterior reversible encephalopathy syndrome (PRES) is a neurotoxic encephalopathic state with clinical symptoms such as headache, altered consciousness, visual disturbances, and seizures. Vasogenic edema occurs predominantly in the posterior occipital and parietal lobes of the brain. PRES is caused by various diseases, and its mechanism remains unclear. However, it can be easily diagnosed based on characteristic lesions on magnetic resonance imaging. CASE SUMMARY: A 51-year-old woman with unremarkable past medical history presented with progressively worsening back pain since 2 mo. Physical examinations revealed paralumbar muscle tenderness, a large lesion on the right breast and several mass-like lesions on both breasts. The blood pressure (BP) was elevated (150/90 mmHg), and did not respond to antihypertensive medication. On the seventh day of hospitalization, she exhibited a confused mental status and generalized tonic-clonic seizures. On magnetic resonance imaging, bilateral cortical and subcortical edema of the occipital lobes, suggestive of PRES, was observed. The serum calcium was 15.8 mg/dL. After two days of treatment with nicardipine, elcatonin, and zolendronic acid, her BP was 130/91 mmHg and serum calcium was 10.1 mg/dL. The patient regained consciousness and her mental status improved. Fluorodeoxyglucose-positron emission tomography revealed right breast cancer with extensive metastases. CONCLUSION: Although rare, hypercalcemia can lead to PRES by causing uncontrolled hypertension. Prompt diagnosis can help prevent severe mental disturbances and even death.

Effects on the Motor Function, Proprioception, Balance, and Gait Ability of the End-Effector Robot-Assisted Gait Training for Spinal Cord Injury Patients.

The primary aim of this study was to reveal the effects of end-effector robot-assisted gait training (RAGT) on motor function, proprioception, balance, and gait ability in patients with incomplete spinal cord injury (SCI). The secondary aim was to determine the correlation between clinical outcomes. This study was a prospective and multi-center study. A total of 13 incomplete SCI patients who met inclusion criteria received 30 min of RAGT with Morning Walk® (Curexo, Seoul, South Korea), and 1 h of conventional physiotherapy 5 times per week for 4 weeks. Clinical outcome measures were 10 m walk test (10MWT), 6 min walk test (6mWT), lower extremity motor score (LEMS), proprioception, Berg Balance Scale (BBS), and Walking Index for Spinal Cord Injury (WISCI)-II. All participants were assessed within 48 h before and after the intervention. All clinical outcomes were statistically improved after RAGT. Subgroup analysis according to the initial proprioception, WISCI-II in the normal group showed a statistically significant improvement compared to the abnormal group. Initial BBS and WISCI-II had a positive correlation with most of the final clinical outcomes. The final BBS had a strong positive correlation with the final 10MWT, 6mWT, and WISCI-II. Initial proprioception had a positive correlation with the final WISCI-II. The final proprioception also had a moderate positive correlation with 6mWT and BBS. This study's results suggest that the end-effector RAGT could promote proprioception, balance ability and walking ability. Postural control ability and proprioception also had a positive relationship with gait ability.

Feasibility of Robot-Assisted Gait Training with an End-Effector Type Device for Various Neurologic Disorders.

Robots are being used to assist the recovery of walking ability for patients with neurologic disorders. This study aimed to evaluate the feasibility and functional improvement of training with robot-assisted gait training (RAGT) using the Morning Walk®, an end-effector type robot using footplates and saddle seat support. A total of 189 individuals (65.1% men, 34.9% women; mean age, 53.2 years; age range: 5-87 years) with brain lesions, spinal cord injuries, Parkinson's disease, peripheral neuropathies, and pediatric patients were involved in this retrospectively registered clinical trial. Each participant performed 30 minutes of RAGT, five times a week, for a total of 24 sessions. Failure was defined as an inability to complete all 24 sessions, and the reasons for discontinuation were analyzed. Parameters of Medical Research Council scales and Functional Ambulation Categories were analyzed before and after RAGT training. Among the 189 patients, 22 (11.6%) failed to complete the RAGT. The reasons included decreased cooperation, musculoskeletal pain, saddle seat discomfort, excessive body-weight support, joint spasticity or restricted joint motion, urinary incontinence from an indwelling urinary catheter, and fatigue. Comparison between the pre- and post-training motor and ambulatory functions showed significant improvement. The result of the study indicates that the Morning Walk® is feasible and safe and useful for functional improvement in patients with various neurologic disorders. Trial Registration: Clinical Research Information Service Identifier: KCT0003627.

Clinical Usefulness of the Korean Developmental Screening Test (K-DST) for Developmental Delays.

OBJECTIVE: To evaluate the clinical usefulness of the Korean Developmental Screening Test (K-DST) via comparison with Korean Ages and Stages Questionnaire (K-ASQ) for the diagnosis of developmental delay in pediatric patients. METHODS: The K-DST and K-ASQ were used to screen pediatric patients who visited the hospital for evaluation and diagnosis of delayed development. Korean Bayley Scales of Infant Development-II (K-BSID-II) or Korean Wechsler Preschool and Primary Scale of Intelligence III (K-WPPSI-III) were used for the standardized assessment. Moreover, the final clinical diagnosis was confirmed by three expert physicians (rehabilitation doctor, psychiatrist, and neurologist). The sensitivity and specificity of each screening tool for the final diagnosis were investigated and correlated with standardized assessments. RESULTS: A total of 145 pediatric consultations were conducted, which included 123 developmental disorders (40 autism spectrum disorders, 46 global developmental delay/intellectual disability, and 37 developmental language disorders) and another 22 that were not associated with any such disorders. The sensitivity and specificity of K-DST based on the final clinical diagnosis were 82.9% and 90.9%, respectively, which were not significantly different from that of K-ASQ (83.7% and 77.3%). Both K-DST and K-ASQ showed good correlation with K-BSID-II and K-WPPSI-III. No significant difference was found between the K-DST and K-ASQ measures. CONCLUSION: K-DST is an excellent screening tool and is expected to replace K-ASQ with high validity.

The nature of rehabilitation services provided to children with cerebral palsy: a population-based nationwide study.

BACKGROUND: Cerebral palsy (CP) is a serious neurodevelopmental disorder that occurs in childhood and requires a range of treatments over a person's lifetime. The aims of this study were to investigate the nature of the rehabilitation treatments provided to children with CP and to determine if there were any changes in patterns over time. METHODS: From 2003 to 2013, the nature of rehabilitation treatment was analyzed for children diagnosed with CP. In addition, the medical data of rehabilitation treatments over a 10-year period (from birth to nine years of age) were analyzed for children born in 2004 diagnosed with CP. Furthermore, we analyzed whether there was a difference in the costs of medical expenditures according to family income. All studies were based on data from the Korean National Health Information Database. RESULTS: It was found that, in recent years, rehabilitation therapy and spasticity treatment of children with CP have started being performed at a younger age than in the past. Among the children with CP born in 2004, 28.6% had physical therapy and 25.4% had occupational therapy on an inpatient basis; 81.3% had physical therapy and 62.2% had occupational therapy on an outpatient basis. Additionally, 22.2% of children received botulinum toxin injection therapy at least once. The numbers of children receiving rehabilitation therapy and botulinum toxin injection were highest at 1-5 years of age and 6-7 years of age, respectively. The expenditure on rehabilitation therapy was not affected by the economic level of the family. CONCLUSION: This study investigated the nature of rehabilitation services provided to children with CP. More recently, the treatment of children with CP has started to be performed earlier than in the past. In addition, it was confirmed that the nature of rehabilitation treatment for children with CP changed according to age. Based on these results, services and health policies may need to be better organized to enhance the benefits to children with CP.

Radial Nerve Injury Caused by Compression Garment for Lymphedema: A Case Report.

Lymphedema is a condition characterized by localized fluid retention and tissue swelling caused by a compromised lymphatic system. To minimize fluid buildup and stimulate the flow of fluid through the lymphatic system, compression garments are usually applied to patients with lymphedema. There are few studies to report complications of compression garments to treat breast cancer-related lymphedema. To our knowledge, this is the first report of radial nerve compression neuropathy associated with wearing a compression garment to treat lymphedema. Level of Evidence: V.

Effects of robot-(Morning Walk®) assisted gait training for patients after stroke: a randomized controlled trial.

OBJECTIVE:: To investigate the effects of Morning Walk®-assisted gait training for patients with stroke. DESIGN:: Prospective randomized controlled trial. SETTING:: Three hospital rehabilitation departments (two tertiary and one secondary). PATIENTS:: We enrolled 58 patients with hemiparesis following a first-time stroke within the preceding year and with Functional Ambulation Category scores ⩾2. INTERVENTION:: The patients were randomly assigned to one of two treatment groups: 30 minutes of training with Morning Walk®, a lower limb rehabilitation robot, plus 1 hour of conventional physiotherapy (Morning Walk® group; n = 28); or 1.5 hour of conventional physiotherapy (control group; n = 30). All received treatment five times per week for three weeks. MAIN OUTCOME MEASUREMENTS:: The primary outcomes were walking ability, assessed using the Functional Ambulation Category scale, and lower limb function, assessed using the Motricity Index-Lower. Secondary outcomes included the 10 Meter Walk Test, Modified Barthel Index, Rivermead Mobility Index, and Berg Balance Scale scores. RESULTS:: A total of 10 patients were lost to follow-up, leaving a cohort of 48 for the final analyses. After training, all outcome measures significantly improved in both groups. In Motricity Index-Lower of the affected limb, the Morning Walk® group (∆mean ± SD; 19.68 ± 14.06) showed greater improvement ( p = .034) than the control group (∆mean ± SD; 11.70 ± 10.65). And Berg Balance Scale scores improved more ( p = .047) in the Morning Walk® group (∆mean ± SD; 14.36 ± 9.01) than the control group (∆mean ± SD; 9.65 ± 8.14). CONCLUSION:: Compared with conventional physiotherapy alone, our results suggest that voluntary strength and balance of stroke patients with hemiparesis might be improved with Morning Walk®-assisted gait training combined with conventional physiotherapy.

Cost of Rehabilitation Treatment of Patients With Cerebral Palsy in Korea.

OBJECTIVE: To investigate rehabilitation treatment cost of patients with cerebral palsy (CP) according to age. METHODS: We analyzed the cost of rehabilitation treatment from 2007 to 2013 for patients diagnosed with CP by sourcing data from the National Health Information Database. RESULTS: While the number of recently born children requiring rehabilitation treatment has decreased, the number of patients requiring this treatment in other age groups has gradually increased. In addition, annual physical therapy, occupational therapy, hydrotherapy, and botulinum toxin injection treatment costs per person have increased. On the other hand, the number of orthopedic surgeries and selective dorsal rhizotomy performed has decreased. CONCLUSION: This study investigated trends in the cost of treatment for patients with CP. This study can be used as a basis to provide treatment support for patients with CP.

Disability Registration State of Children With Cerebral Palsy in Korea.

OBJECTIVE: To investigate the disability registration state of children with cerebral palsy (CP) in Korea. METHODS: Based on the National Health Information Database, the disability registration state was examined for brain lesion disability and other possible complicated disabilities accompanying brain disorder in children diagnosed with CP aged up to 5 years old who were born between 2002 and 2008. RESULTS: Of children diagnosed with CP, 73.1% were registered as having brain lesion disability for the first time before they turned 2 years old. The younger the children, the more likely they will have 1st and 2nd degree disability. However, when the age of children is increased, such likelihood is decreased. The percentage of children registered as having overlapping disabilities was 7%-20%. CONCLUSION: It is important to establish a more accurate standard to rate disability and provide national support systems for children with CP with various severities and multiple disabilities. By reorganizing the current disability registration system for pediatric brain lesions, the system could serve as a classification standard to provide medical and social welfare services.

Incidence of Cerebral Palsy in Korea and the Effect of Socioeconomic Status: A Population-Based Nationwide Study.

PURPOSE: Cerebral palsy (CP) is a neurodevelopmental disorder that causes serious disability. Prematurity and low birth weight (LBW) are known to be the strongest risk factors of CP. While socioeconomic status (SES) has been found to influence the occurrence of CP, prematurity, and LBW, no studies have investigated this effect in Korea. The aim of this study was to evaluate the incidence of CP, prematurity, and LBW in Korea, as well as the effect of SES thereon. MATERIALS AND METHODS: Data were obtained from the National Health Information Database from 2007 to 2013; persons with a history of CP, prematurity, and LBW were investigated by year. SES was defined in accordance with income quintiles, birth regions, and coverage classification. RESULTS: The incidence of CP decreased over the last five years, despite increased rates of prematurity and LBW. CP incidence was significantly lower in affluent groups than in the most deprived group, although this difference disappeared after controlling for confounders. The incidence of CP was significantly higher in medical aid beneficiaries, even after controlling for confounders. CONCLUSION: CP incidence in Korea has decreased over the last five years, despite an increase in high-risk deliveries. Income level had no effect in CP incidence. These results may aid CP management and prevention policies.

Speech and Linguistic Features of Children With Articulation Disorder.

OBJECTIVE: To analyze speech and linguistic features in children with articulation disorder characterized by consonant and vowel phonological errors. METHODS: Between February 2007 and June 2015, 117 children who showed articulation disorder were selected for the study. Based on comprehensive speech and language assessments, the subjects were classified into articulation dysfunction (AD), or AD overlapping with language delay. Detailed information of articulation, including percentage of consonants correct (PCC) and normal percentage of variable consonants derived from the Assessment of Phonology and Articulation for Children test, were compared between the two groups. RESULTS: Totally, 55 children were diagnosed as AD and 62 as AD with language delay. Mean PCC was not significantly different between the two groups. In both groups, the acquisition order of consonants followed the universal developmental sequence. However, differences were observed in the nasal & plosive consonants abnormality between the two groups. When adjusted to their delayed language level in AD with language delay group, 53% of children had appropriate articulation function for their expressive language level. CONCLUSION: Speech and linguistic characteristics in children with articulation disorder were variable. Therefore, comprehensive assessment is required in children with inaccurate pronunciation, and a proper treatment plan based on the results of assessment should be followed.

Motor and Cognitive Developmental Profiles in Children With Down Syndrome.

OBJECTIVE: To investigate motor and cognitive developmental profiles and to evaluate the correlation between two developmental areas and assess the influencing factors of the developmental process in children with Down syndrome (DS). METHODS: Seventy-eight children with DS participated in this study. The medical history was taken and motoric milestone achievements recorded. The Korean Wechsler Preschool and Primary Scale of Intelligence (K-WPPSI) and Bayley Scales of Infant Development-II (BSID-II) were administered. Subjects were divided into severe motor delay group (severe group) and typical motor delay group (typical group). RESULTS: Children with DS follow the same sequence of motor development and generally displayed double times of acquisition of developmental milestones compared with healthy children. Furthermore, having surgery for associated complications showed negative influence to the motor development. Almost of all children with DS showed moderate degree of intellectual disability and motor and cognitive development do not seem to correlate one another. CONCLUSION: Surgery of associated complications can be negatively related to motor development. However, early motor development did not have any significant effects on the achievement of later cognitive functioning.

Heart Rate Variability Among Children With Acquired Brain Injury.

OBJECTIVE: To find evidence of autonomic imbalance and present the heart rate variability (HRV) parameters that reflect the severity of paroxysmal sympathetic hyperactivity (PSH) in children with acquired brain injury (ABI). METHODS: Thirteen children with ABI were enrolled and age- and sex-matched children with cerebral palsy were selected as the control group (n=13). The following HRV parameters were calculated: time-domain indices including the mean heart rate, standard deviation of all average R-R intervals (SDNN), root mean square of the successive differences (RMSSD), physical stress index (PSI), approximate entropy (ApEn); successive R-R interval difference (SRD), and frequency domain indices including total power (TP), high frequency (HF), low frequency (LF), normalized HF, normalized LF, and LF/HF ratio. RESULTS: There were significant differences between the ABI and control groups in the mean heart rate, RMSSD, PSI and all indices of the frequency domain analysis. The mean heart rate, PSI, normalized LF, and LF/HF ratio increased in the ABI group. The presence of PSH symptoms in the ABI group demonstrated a statistically significant decline of the SDNN, TP, ln TP. CONCLUSION: The differences in the HRV parameters and presence of PSH symptoms are noted among ABI children compared to an age- and sex-matched control group with cerebral palsy. Within the ABI group, the presence of PSH symptoms influenced the parameters of HRV such as SDNN, TP and ln TP.

Rehabilitation Treatment of a Child Diagnosed With Duplication of 1q42-q44: A Case Report.

Trisomy 1 is a rare chromosomal anomaly and has never been reported in Korea. Clinical features of trisomy 1 include macrocephaly, prominent forehead, flat nasal bridge, low set ears, and micrognathia, all of which result in a very distinguishable facial structure. A child with trisomy 1 also suffers from mental retardation and/or developmental delays. In this case report, the child was diagnosed with de novo trisomy 1 without receiving any treatment until visiting our hospital. The child suffered from foot and ankle deformities, leading her unable to stand independently. Here we report the surgical treatment and rehabilitation treatment that enabled the child to walk independently.

Clinical Outcomes of Correcting Cervical Deformity in Cerebral Palsy Patients.

OBJECTIVE: To assess several different cervical alignment parameters to determine the clinical relationship between cerebral palsy (CP) with cervical spondylotic myelopathy (CSM) and cervical deformity. METHODS: This study included consecutive patients (N = 31) with CP CSM who underwent cervical operation between January 2006 and January 2014 and who had cervical deformities, such as angular and translational deformities. Cervical spine alignment was assessed with the following parameters: C2-7 Cobb angle, C2-7 sagittal vertical axis (SVA), and T1 slope minus C2-7 Cobb angle. Other clinical values were the manual muscle test, spasticity, grip and pinch test, Box and Block test, and Jebsen-Taylor Hand Function Test. Outcome assessments (Oswestry Neck Disability Index [NDI] and modified Barthel Index) were obtained for all patients pre- and postoperatively. RESULTS: Mean follow-up duration was 3.5 years. There were 13 patients in the corrected group and 18 in the not corrected group. Angular and translational correction were 19.0° (C2-7 Cobb angle), 19.8° (T1 slope minus C2-7 Cobb angle), and 16 mm (C2-7 SVA). Postoperative NDI scores showed greater improvement in the corrected group than the uncorrected group (P = 0.049). In the corrected group, grip power increased postoperatively (8.9 ± 8.9 vs 15.5 ± 8.3; P = 0.021). CONCLUSIONS: Surgical treatment for patients with CP CSM deformity helped alleviate symptoms. Postoperative NDI scores and hand function improved in patients with CP CSM deformity, especially those in the corrected group. Clinicians should consider correcting the deformity in patients with CP CSM.

The Comparison of M-B CDI-K Short Form and K-ASQ as Screening Test for Language Development.

OBJECTIVE: To investigate the usefulness of the communication domain in the Korean version of Ages and Stages Questionnaire (K-ASQ), and short form of the Korean version of MacArthur-Bates Communicative Development Inventories (M-B CDI-K), as screening tests for language developmental delay. METHODS: Data was collected between April 2010 and December 2013, from children who visited either the Department of Physical Medicine and Rehabilitation or the Developmental Delay Clinic, presenting with language development delay as their chief complaint. All the children took the short form of M-B CDI-K and K-ASQ as screening tests, and received diagnostic language assessments including Sequenced Language Scale for Infants (SELSI) or Preschool Receptive-Expressive Language Scale (PRES). RESULTS: A total of 206 children, mean age 29.7 months, were enrolled. The final diagnoses were developmental language disorder, global developmental delay, autism spectrum disorder, cerebral palsy, etc. The M-B CDI-K short form and the communication domain of the K-ASQ had 95.9% and 76.7% sensitivity, and 82.4% and 85.3% specificity, with regards to diagnostic language assessments. The M-B CDI-K short form showed higher negative predictive value and better accuracy than the communication domain of the K-ASQ. CONCLUSION: The screening ability of K-ASQ was not sufficient for children with language development delay, and the M-B CDI-K short form should be implemented for additional screening.