Feasibility for evaluating motor aspects of Parkinson's disease through video consultations in a resource-limited setting in Southern Brazil.

BACKGROUND: Performing motor evaluations using videoconferencing for patients with Parkinson's disease (PD) is safe and feasible. However, the feasibility of these evaluations is not adequately studied in resource-limited settings. OBJECTIVE: To evaluate the feasibility of performing motor evaluations for patients with PD in a resource-limited setting. METHODS: The examiners rated motor aspects of parkinsonism of 34 patients with PD from the Brazilian public healthcare system through telemedicine with the patient's own means by using the Movement Disorder Society-Sponsored Revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) rating scale. Quality measures of the video meeting were also obtained. The feasibility of rating the motor aspects was the primary outcome whereas the rating of individual motor aspects, video meeting quality and predictors of a complete evaluation served as secondary outcomes. RESULTS: The least assessable parameters were freezing of gait (52.9%), gait (70.6%), leg agility, and rest tremor (both 76.5%). Complete MDS-UPDRS part III was possible in 41.2% of patients and 62 out of 374 motor aspects evaluated (16.6%) were missed. Available physical space for a video evaluation was the worst quality measure. Incomplete evaluations were directly associated with disability (p = 0.048, r = 0.34) and inversely with available physical space (p = 0.003, r = 0.55). CONCLUSION: A significant portion of the MDS-UPDRS part III is unable to be performed during telemedicine-based evaluations in a real-life scenario of a resource-limited setting.

ANTECEDENTES: Realizar avaliações motoras usando videoconferência para pacientes com doença de Parkinson (DP) é seguro e viável. Entretanto, a viabilidade dessas avaliações não é adequadamente estudada em cenários com recursos limitados. OBJETIVO: Identificar a viabilidade de realizar avaliações motoras para pacientes com DP em um ambiente com recursos limitados. MéTODOS: Os examinadores avaliaram os aspectos motores da DP de 34 pacientes do sistema público de saúde brasileiro através da telemedicina com os próprios meios do paciente usando a escala Movement Disorder Society-Sponsored Revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS). Medidas de qualidade da videochamada também foram obtidas. A viabilidade da classificação dos aspectos motores foi o resultado primário, enquanto a classificação dos aspectos motores individuais, a qualidade das videoconferências e os preditores de uma avaliação completa serviram como resultados secundários. RESULTADOS: Os parâmetros menos avaliáveis foram congelamento da marcha (52,9%), marcha (70,6%), agilidade dos membros inferiores e tremor de repouso (ambos 76,5%). A parte III completa da MDS-UPDRS foi possível em 41,2% dos pacientes, mas não foi possível avaliar 62 do total de 374 aspectos motores (16,6%). O espaço físico disponível para uma avaliação em vídeo foi a pior medida de qualidade. As avaliações incompletas foram diretamente associadas ao nível de dependência (p = 0,048, r = 0,34) e inversamente ao espaço físico disponível (p = 0,003, r = 0,55). CONCLUSãO: Uma porção significativa da parte III da MDS-UPDRS é perdida durante as avaliações baseadas em telemedicina em um cenário da vida real com recursos limitados.

Gait and posture are correlated domains in Parkinson's disease.

Establishing a relationship between gait and posture in patients with Parkinson's disease (PD) is essential for PD treatment and rehabilitation. While previous studies have indicated that gait and posture are independent domains in PD, shared neuromechanisms related to gait and posture control and previous studies investigating the relationship between gait and posture parameters in stroke survivors and neurologically healthy older adults have shown a correlated domain. Thus, this study analyzed the relationship of gait and posture domains, primarily through gait temporal sub-phases (i.e., double support and stance phases) and step width. We analyzed the spatial-temporal gait parameters at the self-selected velocity and center of pressure (CoP) during quiet standing of 22 idiopathic PD participants under and without dopaminergic medication conditions. The association between quiet standing and gait variables was assessed through the Spearman test, controlled by age, disease duration, NFoG-Q, and levodopa dosage. In ON medication, CoP area showed a significant correlation with stance phase and total double support; and RMS ML CoP showed a significant correlation with stance phase, total double support, and step width. In OFF medication, CoP area, RMS AP CoP, RMS ML CoP, and ML CoP velocity significantly correlated with stance phase and total double support. By showing the relationship between gait and posture domains in PD, our study adds novel knowledge about the shared gait-posture control, which could collaborate with new approaches during mobility treatment and assessment.

Transcutaneous magnetic spinal cord stimulation for freezing of gait in Parkinson's disease.

Dopaminergic drugs partially alleviate gait problems in Parkinson's disease, but the effects are not sustained in the long-term. Particularly, the freezing of gait directly impacts patients' quality of life. Experimental epidural spinal cord stimulation (SCS) studies have suggested positive effects on locomotion among PD patients, but the effects of non-invasive stimulation have never been explored. Here, we investigated in a prospective, open-label, pilot study the efficacy and safety of non-invasive magnetic stimulation of the spinal cord in five patients with PD who experienced gait problems, including freezing of gait. A trial of transcutaneous magnetic SCS was performed at the level of the fifth thoracic vertebra. The primary outcome was the change in freezing of gait 7 days after stimulation. Secondary outcome measures included changes in gait speed and UPDRS part III. After non-invasive spinal cord stimulation, patients experienced a 22% improvement in freezing of gait (p = 0.040) and 17.4% improvement in the UPDRS part III (p = 0.042). Timed up and go times improved by 48.2%, although this did not reach statistical significance (p = 0.06). Patients' global impression of change was 'much improved' for four patients. Improvement in gait after stimulation was reversible, since it returned to baseline scores 4 weeks after stimulation. No severe side effects were recorded. This pilot study suggests that transcutaneous magnetic spinal cord stimulation is feasible and can potentially improve gait problems in PD, without severe adverse effects. Large scale phase II trials are needed to test this hypothesis.

Falls in persons with Parkinson's disease: Do non-motor symptoms matter as much as motor symptoms?

INTRODUCTION: Falls are common among persons with Parkinson's disease (PD). On the other hand, predicting falls is complex as there are both generic and PD-specific contributors. In particular, the role of non-motor symptoms has been less studied. OBJECTIVE: The objective of this study was to identify the role of non-motor predictors of falling in persons with PD (PwP). METHODS: A cross-sectional study was carried out in PwP recruited from a movement disorders clinic. Clinical and demographical data were collected. All PwP were assessed using the Movement Disorders Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS) and the Non-Motor Symptoms Scale (NMSS). Variables were assessed at the bivariate level. Significant variables were put into a logistic regression model. RESULTS: A total of 179 PwP were included. Overall, 16.8% of PwP had fallen in the past 12 months, with 53.3% of them being recurrent fallers. The mean number of monthly falls was 2.5 ± 3.3. Factors associated with falling in the bivariate analysis included the disease duration, Hoehn and Yahr stage, MDS-UPDRS part I and II, postural instability/gait disturbance (PIGD) subtype, NMSS urinary domain, NMSS miscellaneous domain, and non-motor severity burden (all p-values < 0.05). After multivariate analysis, only the disease duration (p = 0.03) and PIGD (p = 0.03) remained as independent risk factors. CONCLUSION: Disease duration and the PIGD subtype were identified as relevant risk factors for falls in PwP Non-motor symptoms appear to have a less important role as risk factors for falls.

Falls in persons with Parkinson's disease: Do non-motor symptoms matter as much as motor symptoms? / Caídas en personas con enfermedad de Parkinson: ¿Los síntomas no motores importan tanto como los síntomas motores?

ABSTRACT Falls are common among persons with Parkinson's disease (PD). On the other hand, predicting falls is complex as there are both generic and PD-specific contributors. In particular, the role of non-motor symptoms has been less studied. Objective: The objective of this study was to identify the role of non-motor predictors of falling in persons with PD (PwP). Methods: A cross-sectional study was carried out in PwP recruited from a movement disorders clinic. Clinical and demographical data were collected. All PwP were assessed using the Movement Disorders Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS) and the Non-Motor Symptoms Scale (NMSS). Variables were assessed at the bivariate level. Significant variables were put into a logistic regression model. Results: A total of 179 PwP were included. Overall, 16.8% of PwP had fallen in the past 12 months, with 53.3% of them being recurrent fallers. The mean number of monthly falls was 2.5 ± 3.3. Factors associated with falling in the bivariate analysis included the disease duration, Hoehn and Yahr stage, MDS-UPDRS part I and II, postural instability/gait disturbance (PIGD) subtype, NMSS urinary domain, NMSS miscellaneous domain, and non-motor severity burden (all p-values < 0.05). After multivariate analysis, only the disease duration (p = 0.03) and PIGD (p = 0.03) remained as independent risk factors. Conclusion: Disease duration and the PIGD subtype were identified as relevant risk factors for falls in PwP Non-motor symptoms appear to have a less important role as risk factors for falls.

RESUMEN Las caídas son frecuentes entre las personas con Parkinson (EP). La predicción de caídas es compleja ya que existen contribuyentes genéricos y específicos. El papel de los síntomas no motores ha sido menos estudiado. Objetivo: Identificar el papel de los factores no motores en caídas en personas con EP (PcP). Métodos: Estudio transversal en PcP reclutadas en una clínica de trastornos del movimiento. Se incluyeron datos clínicos y demográficos. Todos los PcP se evaluaron con la Escala Unificada de Enfermedad de Parkinson modificada por la Sociedad Internacional de Trastornos del Movimiento (MDS-UPDRS) y la Escala de Síntomas No Motores (NMSS). Se incluyeron variables significativas en un modelo de regresión logística. Resultados: Se incluyeron un total de 179 PcP El 16.8% había presentado una caída en los últimos doce meses y el 53.3% de forma recurrente. El número medio de caídas mensuales fue de 2.5 ± 3.3. Los factores asociados con la caída en el análisis bivariado fueron la duración de la enfermedad, Hoehn e Yahr, MDS-UPDRS parte I y II, subtipo de alteración de la marcha/inestabilidad postural (PIGD), dominio urinario del NMSS, dominio misceláneo del NMSS y carga de severidad no motora (todos los valores de p < 0.05). Después del análisis multivariado, solo la duración de la enfermedad (p = 0.03) y PIGD (p = 0.03) permanecieron como un factor de riesgo independiente. Conclusión: La duración de la enfermedad y PIGD se identificaron como factores de riesgo para caídas. Los síntomas no motores parecen tener un papel menos relevante en las caídas.

Outcomes of correction of internal hip rotation in patients with spastic cerebral palsy using proximal femoral osteotomy.

Internal hip rotation (IHR) is the major cause of intoeing gait in patients with cerebral palsy (CP). Femoral derotation osteotomy (FDO) is the preferred treatment to correct excessive anteversion, however the condition may persist or recur postoperatively. Retrospective clinical and kinematic evaluation of 75 spastic diplegic CP patients was conducted for a mean duration of 22 months following proximal FDO. The patients were divided into two groups depending on the correction or persistence of IHR evident at kinematics after surgery. If corrected, mean patient follow-up was extended to 53 months. Outcomes were analyzed using Two Proportions Equality, Mann-Whitney and Wilcoxon tests. IHR persisted in 33.3% of cases at mean follow-up of 22 months and subtrochanteric femur osteotomy was more frequent in this group (p=0.033). Thirty-five of the fifty-four patients with first-round gait correction were monitored during the extended follow-up. Those for whom IHR recurred (9.5%) had undergone FDO at a comparatively younger age. Patient gender, operations prior to or at the time of femoral osteotomy, topographic classification, GMFCS level, or the extent of preoperative clinical and kinematic abnormalities had no apparent influence on persistence or recurrence of abnormal gait.

Patrones del movimiento pélvico en pacientes con hemiplejía espástica / Pelvic movement patterns in patients with spastic hemiplegia

El tratamiento adecuado de patologías que alteran la marcha normal, como por ejemplo, encefalopatías estáticas tales como la parálisis cerebral infantil, requiere de la identificación precisa de los patrones de movimiento asociados y sus causas, con el propósito de seleccionar el tratamiento más apropiado en términos de efectividad. Identificar y caracterizar patrones cinemáticos de la pelvis en el plano transverso como respuesta compensatoria a deformidades de los miembros inferiores en pacientes pediátricos con hemiplejía espástica. La muestra utilizada fue de 66 pacientes con disfunción motora subtipo hemiplejia espástica secuela de parálisis cerebral infantil, del Hospital Ortopédico Infantil de Caracas, entre los años 1999 y 2004. A cada paciente se le realizó un análisis de marcha siguiendo el protocolo del Laboratorio de Marcha del Hospital Ortopédico Infantil. A los patrones de cinemática obtenidos se les midieron las desviaciones de los movimientos pélvicos en los tres planos así como también la progresión del pie y la rotación de cadera evidenciadas por el examen físico (anteversión femoral). Particular énfasis se realizó en el análisis de las desviaciones en el plano transverso. Se obtuvieron los patrones de movimiento con características propias para cada subgrupo: Tipo I, Tipo II, Tipo III y Tipo IV. Los hallazgos son consistentes con los reportados en la literatura en lo concerniente a los planos sagital y coronal. Sin embargo, en el plano transverso se demostraron patrones consistentes con deformidad ósea presente en el miembro ipsilateral. Las respuestas compensatorias observadas en pelvis en dicho plano tienen como objetivo mantener ambos pies en la línea de progresión.

Adequate treatment of pathologies that alter normal gait, for example, spastic encephalopaties such as cerebral palsy, require precise identification of their movement patterns and causes, in order to select the most effective treatment. To identify and characterize transverse plane kinematic patterns of the pelvis as a compensatory response to lower limb deformities in pediatric patients with spastic hemiplegias. 66 patients with spastic hemiplegia subtype motor dysfunction, from the Hospital Ortopédico Infantil (HOI) at Caracas,Venezuela, were studied between 1999 and 2004. A gait analysis was performed in each patient following the HOI’s protocol. Deviations of pelvic movements were measured on all three planes to the kinematics gait patterns obtained, Measurements of foot progression and hip rotation (femoral anteversion) were achieved via clinical examination. Movement patterns on spatial planes were obtained and characterized in terms of its deviations, then classified in four wellfeatured subtypes: Type I, Type II, Type III y Type IV. Special emphasis was placed on analysis of deviations in the transverse plane. Findings for sagital and coronal planes are consistent with those reported by the literature. However, movement patterns that are consistent with bone deformities in the ipsilateral limb were demonstrated for transverse plane, and the pelvic coping responses for that plane tend to maintain both feet aligned with the gait progression line.

Unilateral closed-lip schizencephaly and epilepsy: a comparison with cases of unilateral polymicrogyria.

We compared the electroclinical features and evolution of patients with two different types of abnormal cortical organization: unilateral closed-lip schizencephaly (SCHZ) and unilateral polymicrogyria (PMG). Between February 1990 and June 2002, 51 children with either unilateral PMG or closed-lip SCHZ were selected through neuroradiological analysis for investigation at our service. We evaluated the frequency of epilepsy, electroclinical features and evolution. The mean time of follow-up was 7 years (range 1-12 years). All patients underwent neurological examination, computed tomography scan and magnetic resonance imaging, serial electroencephalographic (EEG) recordings and neuropsychological assessment. Thirty-six of the 51 patients had unilateral PMG. All patients had hemiparesis with mild spasticity. Mental retardation was mild in 20 and moderate in 14. In two patients IQ was normal. Partial motor seizures were recorded in 28 patients, with secondary generalization in 20. The median age at onset of seizures was 2 years (range 4 months-7 years). Interictal EEGs showed unilateral spikes in all patients. In 21 patients epilepsy worsened between the ages of 4 and 8 (mean 5.6 years) with frequent atonic seizures, atypical absences, epileptic negative myoclonus and gait difficulties. EEGs showed continuous spike-wave activity or bilateral high-frequency spike discharges during slow-wave sleep. Frequent relapses of atonic and myoclonic seizures were seen in nine patients. At present, 16 patients are seizure-free. Fifteen patients with unilateral SCHZ were included in the study. Focal motor seizures were registered in seven cases, in three of them with secondary generalization. The median age at onset of epilepsy was 2.5 years (range 1-4 years). Interictal EEGs showed unilateral spikes in these seven cases. All patients except one presented mild spastic hemiparesis. Mental retardation was mild in ten children, moderate in two and IQ was normal in three. Although the underlying mechanisms leading to PMG and SCHZ are probably similar, the electroclinical phenomenon of secondary bilateral synchrony with frequent negative myoclonus was not present in our cases with unilateral closed-lip SCHZ.