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OBJECTIVES: To describe health care use and its associated factors in the chronic phase after stroke. METHODS: Patients completed a questionnaire on health care use, 5-8 years after hospital admission for stroke. It comprised the number of visits to physicians or other health care professionals over the past 6 months (Physician-visits; Low ≤1 or High ≥2) and other health care professionals (Lowâ¯=â¯0 or High ≥ 1). In addition the Longer-term Unmet Needs after Stroke (LUNS), Frenchay Activity Index (FAI) and Physical and Mental Component Summary Scales of the Short Form 12 (PCS and MCS) were administered. Their associations with health care use (high, low) were determined by means of logistic regression analysis, adjusted for sex and age. RESULTS: Seventy-eight of 145 patients (54%) returned the questionnaires; mean time-since-stroke was 80.3 months (SD10.2), age-at-stroke 61.7 years (SD13.8), and 46 (59%) were male. Physician contacts concerned mainly the general practitioner (58; 79.5%). Forty-one (52.6%) and 37 (47.4%) of the patients had a high use of physician and other health professionals visits, respectively. Worse PCS scores were associated with both high use of physician and other health professionals visits (OR .931; 95%CI .877-.987 and OR .941; 95%CI .891-.993, respectively), whereas the FAI, MCS, or LUNS were not related to health care use. CONCLUSIONS: Health care use after stroke is substantial and is related to physical aspects of health status, not to mental aspects, activities or unmet needs, suggesting a mismatch between patients' needs and care delivered.
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Visita a Consultorio Médico/tendencias , Evaluación de Procesos y Resultados en Atención de Salud , Derivación y Consulta/tendencias , Accidente Cerebrovascular/terapia , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Encuestas de Atención de la Salud , Estado de Salud , Humanos , Masculino , Salud Mental , Persona de Mediana Edad , Calidad de Vida , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/fisiopatología , Accidente Cerebrovascular/psicología , Factores de Tiempo , Resultado del TratamientoRESUMEN
BACKGROUND: Unmet needs are common after stroke. We aimed to translate the 22-item Longer-term Unmet Needs after Stroke (LUNS) Questionnaire and validate it in a Dutch stroke population. METHODS: The LUNS was translated and cross-culturally adapted according to international guidelines. After field testing, the Dutch version was administered twice to a hospital-based cohort 5-8 years after stroke. Participants were also asked to complete the Frenchay Activity Index (FAI) and Short Form (SF)-12. To explore acceptability, the response and completion rates as well as number of missing items were computed. For concurrent validity, the differences in health status (FAI, SF-12) between groups who did and did not report an unmet need were calculated per item. To determine the 14-day test-retest reliability, the percentage of agreement between the first and the second administration was calculated for each item. RESULTS: Seventy-eight of 145 patients (53.8%) returned the initial Dutch LUNS (average age 68.3 [standard deviation 14.0] years, 59.0% male); 66 of these patients (84.6%) fully completed it. Of all items, 3.3% were missing. Among completers, the median number of unmet needs was 3.5 (2.0-5.0; 1.0-14.0). For 15 of 22 items, there was a significant association with the FAI or SF-12 Mental or Physical Component Summary scales. The percentage of agreement ranged from 69.8% to 98.1% per item. CONCLUSIONS: Among the 53.8% who completed the survey, the LUNS was concluded to be feasible, reliable, and valid; two-thirds of its items were related to activities and quality of life. Its usefulness and acceptability when administered in routine practice require further study.
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Necesidades y Demandas de Servicios de Salud , Evaluación de Necesidades , Rehabilitación de Accidente Cerebrovascular/métodos , Accidente Cerebrovascular/terapia , Encuestas y Cuestionarios , Actividades Cotidianas , Anciano , Comprensión , Características Culturales , Estudios de Factibilidad , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Países Bajos , Satisfacción del Paciente , Psicometría , Calidad de Vida , Reproducibilidad de los Resultados , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/fisiopatología , Accidente Cerebrovascular/psicología , TraducciónRESUMEN
OBJECTIVE: To investigate the measurement properties of the Dutch version of the Michigan Hand Outcomes Questionnaire (MHQ) in patients with stroke. DESIGN: Validation study. SETTING: Outpatient rehabilitation clinic. PARTICIPANTS: Consecutive patients with stroke (N=51; mean age, 60±11y; 16 women [31%]). INTERVENTIONS: Patients were asked to complete the MHQ (57 items) and Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36). Additional assessments included the Barthel Index and performance tests for hand function (Action Research Arm Test, Nine Hole Peg Test, Frenchay Arm Test, Motricity Index). MAIN OUTCOME MEASURES: Associations between the MHQ and other outcome measures were determined using Spearman correlation coefficients and the internal consistency of the MHQ using Cronbach α. Floor or ceiling effects were present if >15% of the patients scored minimal or maximal scores, respectively. Test-retest reliability was established by the intraclass correlation coefficient. RESULTS: The mean MHQ total score was 70.0±22.4, with Cronbach α being .97. The MHQ total score correlated significantly with the physical component summary of the SF-36, the Barthel Index, and all hand function performance tests (P<.01). The MHQ total score showed no floor or ceiling effects. The test-retest intraclass correlation coefficient was .97. CONCLUSIONS: This study provides preliminary evidence that the MHQ is an internally consistent, valid, and reliable hand function questionnaire in outpatients after stroke, although these results need to be further confirmed.
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Evaluación de la Discapacidad , Mano/fisiopatología , Destreza Motora/fisiología , Accidente Cerebrovascular/fisiopatología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Encuestas y CuestionariosRESUMEN
BACKGROUND: Knowledge on long-term participation is scarce for patients with paid employment at the time of stroke. OBJECTIVE: Describe the characteristics and the course of participation (paid employment and overall participation) in patients who did and did not remain in paid employment. METHODS: Patients with paid employment at the time of stroke completed questions on work up to 30 months after starting rehabilitation, and the Utrecht Scale for Evaluation of Rehabilitation-Participation (USER-P, Frequency, Restrictions and Satisfaction scales) up to 24 months. Baseline characteristics of patients with and without paid employment at 30 months were compared using Fisher's Exact Tests and Mann-Whitney U Tests. USER-P scores over time were analysed using Linear Mixed Models. RESULTS: Of the 170 included patients (median age 54.2 interquartile range 11.2 years; 40% women) 50.6% reported paid employment at 30 months. Those returning to work reported at baseline more working hours, better quality of life and communication, were more often self-employed and in an office job. The USER-P scores did not change statistically significantly over time. CONCLUSION: About half of the stroke patients remained in paid employment. Optimizing interventions for returning to work and achieving meaningful participation outside of employment seem desirable.
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Rehabilitación de Accidente Cerebrovascular , Accidente Cerebrovascular , Femenino , Humanos , Masculino , Empleo , Calidad de Vida , Accidente Cerebrovascular/complicaciones , Sobrevivientes , Persona de Mediana EdadRESUMEN
Objective: To systematically describe the use and outcomes of Patient-Reported Outcomes Measurement Information System (PROMIS) measures in clinical studies in populations with stroke. Data Sources: A systematic search on the use of PROMIS measures in clinical stroke studies in 9 electronic databases. Study Selection: Studies had to be original, reporting on outcome data using PROMIS measures in populations with stroke (ischemic and/or hemorrhagic), from January 1st, 2007. Initially, 174 unique studies met the inclusion criteria. In 2 steps, titles, abstracts and full-text articles were screened for eligibility (2 authors independently). Data Extraction: From the selected articles, study characteristics, type of PROMIS measures, and its outcomes were extracted by 2 authors independently. The authors discussed their views to achieve consensus. A third author was consulted if necessary. Data Synthesis: In total, 27 studies (24,366 patients) were included, predominantly from the United States (22); most study populations were hospital-based (20); the number of patients ranged from 30-3283. In general, patients had no or mild symptoms (median modified Rankin scale 1). Two different generic PROMIS measures were reported (PROMIS Global Health, PROMIS 29) and 9 PROMIS measures focusing on specific domains (sleep, pain, physical functioning, self-efficacy, satisfaction with social roles, depression, anxiety, cognition, fatigue). These match the International Classification of Functioning, Disability, and Health (ICF) domains mentioned in the Core Set for Stroke. The measures were administered 1-55 months after stroke. Outcome data are provided. Pooling of data was not achieved because of a large variety in study characteristics (inclusion criteria, follow-up moments, data processing). Conclusions: The PROMIS measures in this review could be relevant from a patient's perspective, covering ICF core set domains for patients with stroke. The large variety in study characteristics hampers comparisons across populations. Many different outcome measures are used to report results of stroke rehabilitation studies.
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BACKGROUND: Implementation of an eRehabilitation intervention named Fit After Stroke @Home (Fast@home) - including cognitive/physical exercise applications, activity-tracking, psycho-education - after stroke resulted in health-related improvements. This study investigated what worked and why in the implementation. METHODS: Implementation activities (information provision, integration of Fast@home, instruction and motivation) were performed for 14 months and evaluated, using the Medical Research Council framework for process evaluations which consists of three evaluation domains (implementation, mechanisms of impact and contextual factors). Implementation activities were evaluated by field notes/surveys/user data, it's mechanisms of impact by surveys and contextual factors by field notes/interviews among 11 professionals. Surveys were conducted among 51 professionals and 73 patients. User data (n = 165 patients) were extracted from the eRehabilitation applications. RESULTS: Implementation activities were executed as planned. Of the professionals trained to deliver the intervention (33 of 51), 25 (75.8%) delivered it. Of the 165 patients, 82 (49.7%) were registered for Fast@home, with 54 patient (65.8%) using it. Mechanisms of impact showed that professionals and patients were equally satisfied with implementation activities (median score 7.0 [IQR 6.0-7.75] versus 7.0 [6.0-7.5]), but patients were more satisfied with the intervention (8.0 [IQR 7.0-8.0] versus 5.5 [4.0-7.0]). Guidance by professionals was seen as most impactful for implementation by patients and support of clinical champions and time given for training by professionals. Professionals rated the integration of Fast@home as insufficient. Contextual factors (financial cutbacks and technical setbacks) hampered the implementation. CONCLUSION: Main improvements of the implementation of eRehabilitation are related to professionals' perceptions of the intervention, integration of eRehabilitation and contextual factors.Implication for rehabilitationTo increase the use of eRehabilitation by patients, patients should be supported by their healthcare professional in their first time use and during the rehabilitation process.To increase the use of eRehabilitation by healthcare professionals, healthcare professionals should be (1) supported by a clinical champion and (2) provided with sufficient time for learning to work and getting familiar with the eRehabilitation program.Integration of eRehabilitation in conventional stroke rehabilitation (optimal blended care) is an important challenge and a prerequisite for the implementation of eRehabilitation in the clinical setting.
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AIM: To describe the course of depressive symptoms during the first 12 months post-stroke and its association with unmet needs. METHODS: A prospective cohort study among stroke patients admitted to inpatient rehabilitation. Depressive symptoms were assessed 3, 6, and 12 months post-stroke using the Hospital Anxiety and Depression Scale, and categorized into three trajectories: no (all times <8), non-consistent (one or two times ≥8), or persistent (all times ≥8) depressive symptoms. Unmet needs were assessed using the Longer-Term Unmet Needs questionnaire. Multivariable logistic regression analyses were used to investigate the association between depressive symptoms and unmet needs. RESULTS: One hundred and fifty-one patients were included, of whom 95 (62.9%), 38 (25.2%), and 18 (11.9%) had no, non-consistent, or persistent depressive symptoms, respectively. Depressive symptoms three months post-stroke persisted in 43.9% and recurred in 19.5% of patients during the first 12 months post-stroke. Depressive symptoms were significantly associated with the occurrence and number of unmet needs (odds ratio 6.49; p = 0.003 and odds ratio 1.28; p = 0.005, respectively). CONCLUSIONS: Depressive symptoms three months post-stroke were likely to persist or recur during the first 12 months post-stroke. Depressive symptoms are associated with unmet needs. These results suggest that routine monitoring of depressive symptoms and unmet needs should be considered post-stroke.Implications for rehabilitationPatients with depressive symptoms three months post-stroke have a high risk of developing persistent or recurrent depressive symptoms during the first 12 months post-stroke.Unmet needs are associated with both non-consistent and persistent depressive symptoms post-stroke.These results suggest that health professionals should routinely screen for depressive symptoms and health care needs around three months post-stroke.In patients with depressive symptoms at three months post-stroke early treatment of depressive symptoms and addressing unmet needs should be considered and depressive symptoms should be routinely monitored during the first 12 months post-stroke.
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Rehabilitación de Accidente Cerebrovascular , Accidente Cerebrovascular , Depresión/diagnóstico , Depresión/epidemiología , Depresión/etiología , Necesidades y Demandas de Servicios de Salud , Humanos , Estudios Prospectivos , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/epidemiología , Encuestas y CuestionariosRESUMEN
OBJECTIVE: Despite the increasing availability of eRehabilitation, its use remains limited. The aim of this study was to assess factors associated with willingness to use eRehabilitation. DESIGN: Cross-sectional survey. SUBJECTS: Stroke patients, informal caregivers, health-care professionals. METHODS: The survey included personal characteristics, willingness to use eRehabilitation (yes/no) and barri-ers/facilitators influencing this willingness (4-point scale). Barriers/facilitators were merged into factors. The association between these factors and willingness to use eRehabilitation was assessed using logistic regression analyses. RESULTS: Overall, 125 patients, 43 informal caregivers and 105 healthcare professionals participated in the study. Willingness to use eRehabilitation was positively influenced by perceived patient benefits (e.g. reduced travel time, increased motivation, better outcomes), among patients (odds ratio (OR) 2.68; 95% confidence interval (95% CI) 1.34-5.33), informal caregivers (OR 8.98; 95% CI 1.70-47.33) and healthcare professionals (OR 6.25; 95% CI 1.17-10.48). Insufficient knowledge decreased willingness to use eRehabilitation among pa-tients (OR 0.36, 95% CI 0.17-0.74). Limitations of the study include low response rates and possible response bias. CONCLUSION: Differences were found between patients/informal caregivers and healthcare professionals. Ho-wever, for both groups, perceived benefits of the use of eRehabilitation facilitated willingness to use eRehabili-tation. Further research is needed to determine the benefits of such programs, and inform all users about the potential benefits, and how to use eRehabilitation.
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Cuidadores/estadística & datos numéricos , Personal de Salud/estadística & datos numéricos , Pacientes/estadística & datos numéricos , Accidente Cerebrovascular/terapia , Telemedicina/métodos , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas y CuestionariosRESUMEN
BACKGROUND: Patients' expectations of the outcomes of rehabilitation may influence the outcomes and satisfaction with treatment. OBJECTIVES: For stroke patients in multidisciplinary rehabilitation, we aimed to explore patients' outcome expectations and their fulfilment as well as determinants. METHODS: The Stroke Cohort Outcomes of REhabilitation (SCORE) study included consecutive stroke patients admitted to an inpatient rehabilitation facility after hospitalisation. Outcome expectations were assessed at the start of rehabilitation (admission) by using the three-item Expectancy scale (sum score range 3-27) of the Credibility/Expectancy Questionnaire (CEQ). After rehabilitation, patients answered the same questions formulated in the past tense to assess fulfilment of expectations. Baseline patient characteristics were recorded and health-related quality of life (EQ-5D) was measured at baseline and after rehabilitation. The number of patients with expectations unfulfilled or fulfilled or exceeded was computed by subtracting the admission and discharge CEQ Expectancy scores. Multivariable regression analysis was used to determine the factors associated with outcome expectations and their fulfilment, estimating odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS: We included 165 patients (96 males [58.2%], mean (SD) age 60.2 years [12.7]) who completed the CEQ Expectancy instrument at admission (median score 21.6, interquartile range [IQR] 17.0-24.0); 79 completed it both at admission (median score 20.6, IQR 16.6-24.4) and follow-up (median score 20.0, IQR 16.4-22.8). For 40 (50.6%) patients, expectations of therapy were fulfilled or exceeded. No patient characteristic at admission was associated with baseline CEQ Expectancy score. Odds of expectation fulfilment were associated with low expectations at admission (OR 0.70, 95% CI 0.60-0.83) and improved EQ-5D score (OR 1.35, 95% CI 1.04-0.75). CONCLUSIONS: In half of the stroke patients in multidisciplinary rehabilitation, expectations were fulfilled or exceeded, most likely in patients with low expectations at admission and with improved health-related quality of life. More research into the role of health professionals regarding the measurement, shaping and management of outcome expectations is needed.
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Pacientes Internos/psicología , Motivación , Aceptación de la Atención de Salud/psicología , Rehabilitación de Accidente Cerebrovascular/psicología , Accidente Cerebrovascular/psicología , Evaluación de la Discapacidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Grupo de Atención al Paciente , Calidad de Vida , Encuestas y Cuestionarios , Resultado del TratamientoRESUMEN
OBJECTIVE: The aim of the study was to ascertain the prevalence of depressive mood and its determinants in the chronic phase after stroke. DESIGN: Five hundred seventy-six consecutive patients were invited to participate 2 to 5 yrs after hospitalization for a first-ever stroke. Stroke characteristics at hospitalization were collected retrospectively from medical records. Patients and their caregivers completed questionnaires on depression (Hospital Anxiety and Depression Scale [HADS]), sociodemographic characteristics, healthcare usage, daily activities, quality of life, and caregiver strain. Patients with HADS depression scores of less than 8 were compared with patients with HADS depression scores of 8 or higher by means of univariate logistic regression analyses, adjusted for age, sex, and Barthel Index at discharge. RESULTS: Two hundred seven patients (36%) returned the questionnaires. After a mean follow-up of 36.3 mos, 67 patients (34%) had a HADS depression score of 8 or higher. Male sex and being born abroad was statistically significantly associated with a high HADS depression score, adjusted for age, sex and stroke severity (where appropriate). Depressed patients had higher anxiety levels, a more avoidant coping style, less daily activities, and a lower quality of life; their caregivers experienced a higher burden. CONCLUSIONS: In the chronic phase after stroke, a considerable proportion of patients has depressive symptoms. This seems to be related to sex, country of origin, anxiety, coping style, daily activities, quality of life, and caregivers' strain. Future research should focus on causal relationships and opportunities for treatment.
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Depresión/epidemiología , Accidente Cerebrovascular/psicología , Adaptación Psicológica , Ansiedad/epidemiología , Cuidadores/psicología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Países Bajos/epidemiología , Calidad de Vida , Factores Sexuales , Estrés Psicológico/epidemiología , Accidente Cerebrovascular/epidemiología , Encuestas y CuestionariosRESUMEN
Incorporating user requirements in the design of e-rehabilitation interventions facilitates their implementation. However, insight into requirements for e-rehabilitation after stroke is lacking. This study investigated which user requirements for stroke e-rehabilitation are important to stroke patients, informal caregivers, and health professionals. The methodology consisted of a survey study amongst stroke patients, informal caregivers, and health professionals (physicians, physical therapists and occupational therapists). The survey consisted of statements about requirements regarding accessibility, usability and content of a comprehensive stroke e-health intervention (4-point Likert scale, 1=unimportant/4=important). The mean with standard deviation was the metric used to determine the importance of requirements. Patients (N=125), informal caregivers (N=43), and health professionals (N=105) completed the survey. The mean score of user requirements regarding accessibility, usability and content for stroke e-rehabilitation was 3.1 for patients, 3.4 for informal caregivers and 3.4 for health professionals. Data showed that a large number of user requirements are important and should be incorporated into the design of stroke e-rehabilitation to facilitate their implementation.
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OBJECTIVE: To describe practice variation in the structure of stroke rehabilitation in 4 specialized multidisciplinary rehabilitation centres in the Netherlands. DESIGN AND METHODS: A multidisciplinary expert group formulated a set of 23 elements concerning the structure of inpatient and outpatient stroke rehabilitation, categorized into 4 domains: admission-related (n = 7), treatment-related (n = 10), client involvement-related (n = 2), and facilities-related (n = 4). In a cross-sectional study in 4 rehabilitation centres data on the presence and content of these elements were abstracted from treatment programmes and protocols. In a structured expert meeting consensus was reached on the presence of practice variation per element. RESULTS: Practice variation was observed in 22 of the 23 structure elements. The element "strategies for patient involvement" appeared similar in all rehabilitation centres, whereas differences were found in the elements regarding admission, exclusion and discharge criteria, patient subgroups, care pathways, team meetings, clinical assessments, maximum time to admission, aftercare and return to work modules, health professionals, treatment facilities, and care-giver involvement. CONCLUSION: Practice variation was found in a wide range of aspects of the structure of stroke rehabilitation.
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Práctica Profesional/estadística & datos numéricos , Centros de Rehabilitación/organización & administración , Rehabilitación de Accidente Cerebrovascular , Cuidados Posteriores/organización & administración , Estudios Transversales , Hospitalización , Humanos , Países Bajos , Admisión del Paciente/normas , Grupo de Atención al Paciente/organización & administración , Alta del Paciente/normas , Calidad de la Atención de Salud , Centros de Rehabilitación/normasRESUMEN
OBJECTIVE: To present an isometric method for validation of a shoulder model simulation by means of experimentally obtained electromyography and addressing all muscles active around the shoulder joints. BACKGROUND: Analysis of muscle force distribution in the shoulder by means of electromyography during motion tasks is hampered by artificial and non-linear amplitude modulation and is often limited to downward directed external forces. This application of EMG is therefore inadequate and insufficient for the validation of shoulder model simulations. We suggest an isometric method including multi-directional forces to overcome these problems. METHODS: A force with constant magnitude is actively rotated stepwise in 20 directions perpendicular around the arm while kept in one position. The isometric muscle activation (EMG) is a function of the clockwise-rotated force angle, characterized by baseline activation, and a section of increased muscle activation characterized by baseline interception and direction and magnitude of maximum muscle activation. Comparison of the parameterized muscle activation with predicted muscle forces from model simulation illustrates the applicability for musculo-skeletal model validation. RESULTS: All recorded shoulder muscles were active over a section of force angles of at least 180 degrees. Some muscles demonstrated two activation sections. The estimated model sensitivity for the baseline interception was SD=5 degrees -10 degrees. The Principal Action was the most reliable parameter (SD=4 degrees ). A correlation of 0.778 was observed between model simulations and EMG recordings. CONCLUSIONS: The methodology addresses all shoulder muscles over a substantial section of planar force directions. This enables the comparison of experimentally determined direction of activation on- and offset and direction of maximum activation with equivalent muscle forces, predicted from model simulation.
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Algoritmos , Diagnóstico por Computador/métodos , Electromiografía/métodos , Contracción Isométrica/fisiología , Modelos Biológicos , Músculo Esquelético/fisiología , Articulación del Hombro/fisiología , Simulación por Computador , Humanos , Rango del Movimiento Articular/fisiología , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Estrés MecánicoRESUMEN
OBJECTIVE: To assess the reliability of force direction dependent EMG parameters in shoulder muscles for future clinical research. DESIGN: EMG measurements of shoulder muscles including the rotator cuff were performed during isometrical external loading in various directions covering 360 degrees in a plane perpendicular to the humeral axis. BACKGROUND: Relating EMG to force direction bypasses problems associated with the unknown position and velocity dependence of the EMG signal. For clinical application, information on the reliability of force direction dependent parameters is required. METHODS: The EMG of shoulder muscles of healthy subjects was related to force direction. The activation patterns obtained where parameterised after least squares function fitting, returning three force direction dependent parameters, i.e. two on- and offset directions of the activity peak and the direction of highest EMG activity also called principal action. Within-trial, inter-trial, inter-day and inter-subject variabilities were estimated. RESULTS: With a group size of n = 10, the 95% confidence interval for inter-day measurements was found to be about +/-5 degrees on a scale of 360 degrees for the principal action and just below +/-10 degrees for the intercepts. CONCLUSION: The method allows for intra-individual measurements on different days with sufficient accuracy so that shoulder muscle co-ordination of patients before and after interventions like surgery or physical therapy can be evaluated. RELEVANCE: Quantitative data on shoulder muscle function in vivo are required to assess the effectiveness of interventions on the shoulder.
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Diagnóstico por Computador/métodos , Electromiografía/métodos , Contracción Isométrica/fisiología , Músculo Esquelético/fisiología , Examen Físico/métodos , Articulación del Hombro/fisiología , Adulto , Algoritmos , Medicina Clínica/métodos , Humanos , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Estrés MecánicoRESUMEN
This study identified which residual-limb quality factors are related to functional mobility 1 year after transtibial (TT) amputation. A group of 28 TT amputees were evaluated with respect to their functional mobility (Prosthesis Evaluation Questionnaire [PEQ], Locomotor Index, Timed Up and Go test). The general (Chakrabarty score) and bony (tibial length, relative fibular length) residual-limb quality factors were assessed. An increase in general residual-limb quality (Chakrabarty >60) was correlated with greater functional mobility in one of the outcome measures (PEQ). For bony residual-limb quality, a tibial length of 12-15 cm distal from the knee joint line was correlated with greater functional outcome for all three outcome measures and the relative fibular length was not correlated with functional mobility for any of the outcome measures. This study showed that specific aspects of residual-limb quality are related to increased functional mobility. The amputation technique and resulting residual-limb factors may be important for patients to achieve functional prosthetic use.
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Muñones de Amputación/fisiopatología , Amputación Quirúrgica/métodos , Miembros Artificiales/normas , Pierna/irrigación sanguínea , Actividad Motora/fisiología , Enfermedades Vasculares Periféricas/cirugía , Tibia/cirugía , Anciano , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Factores de TiempoRESUMEN
OBJECTIVE: The objective of this study is to verify the assumption that the three-dimensional (3-D) shoulder motions can be described by means of an interpolation of statically recorded postures and thus, support the application of non-invasive but static techniques for motion analysis of the shoulder. BACKGROUND: During shoulder motions the scapula moves underneath the skin. Recording of motions is only possible by means of invasive methods. An alternative for the recording is palpation of skeletal landmarks on the scapula and subsequent digitization. The method is non-invasive and relatively easy, but static. Motions are modelled by means of interpolation of the subsequent position recordings. Validity of this method, however, has never been demonstrated. METHODS: Seven subjects performed an alternating abduction-adduction motion of the arm in a plane 30 degrees forward rotated with respect to the frontal plane, at three sub-maximal frequencies: 0.04, 0.25 and 0.50 Hz. The humeral and scapular motions were recorded by means of a two-dimensional (2-D) X-ray video system. The motions of the humerus, the scapular spine and the glenoid ridge were defined by angles, and the sinusoidal motion curves were characterized by means of the offset, the amplitude and the phase of the motions. RESULTS: By means of Repeated Measurements Multi-Variate Analysis of Variance, a significant effect of arm motion on the phase and the amplitude of the scapular motion was found. However, the magnitude of the effects are negligibly small for the present applications at sub-maximal arm motion velocities. CONCLUSIONS: For normal arm motions in the vertical plane, the kinematics of the shoulder skeleton can be derived by the interpolation of statically recorded positions of the bones. RELEVANCE: The 3-D motions of the shoulder are the result of the kinematic constraints of the skeletal system and the coordinated muscle forces, and are only one of the few characteristics that can be quantified. The motions contain relevant information which is essential in the analysis of clinical disorders, e.g. sub-acromial disorders and glenohumeral subluxation, the evaluation of clinical interventions and physiotherapy, and in the analysis of ergonomic and biomechanical problems.