Publications by authors named "Gustaaf J Lankhorst"

Objective: Therapeutic footwear is often prescribed at considerable cost. Foot-care specialists normally assess the wear-and-tear of therapeutic footwear in order to monitor the adequacy of the prescribed footwear and to gain an indicator of its use. We developed a simple, rapid, easily applicable indicator of wear-and-tear of therapeutic footwear: the wear-and-tear scale.

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Objectives: An estimated 55-90% of patients with rheumatoid arthritis have foot problems. Therapeutic footwear is frequently prescribed as part of usual care, but data on its use and effect is incomplete. This study aimed to investigate the use and effects of therapeutic footwear.

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Background: Illness perceptions have been shown to predict patient activities. Therefore, studies of the effectiveness of a targeted illness-perception intervention on chronic nonspecific low back pain (CLBP) are needed.

Objective: The purpose of this study was to compare the effectiveness of treatment of illness perceptions against a waiting list for patients with CLBP.

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Objective: To determine the course of daily functioning in patients with multiple sclerosis in the 10 years after their definite diagnosis.

Methods: A long-term prospective follow-up study including an incidence cohort of 156 patients with multiple sclerosis. Participants were examined systematically, beginning immediately after definite diagnosis, then at the following time-points: 6 months, 1, 2, 3, 6 and 10 years.

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Objectives: To determine whether there is a relationship between self-reported fatigue and the energy cost of walking (ECw), and how self-reported fatigue and ECw relate to physical functioning in patients with multiple sclerosis (MS).

Design: Cross-sectional cohort study, using structural equation modeling.

Setting: Home environment and at a university medical center.

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Objective: The aim of this study was to identify treatment-specific predictors of the effectiveness of a method of evidence-based treatment: cognitive treatment of illness perceptions. This study focuses on what treatment works for whom, whereas most prognostic studies focusing on chronic non-specific low back pain rehabilitation aim to reduce the heterogeneity of the population of patients who are suitable for rehabilitation treatment in general.

Design: Three treatment-specific predictors were studied in patients with chronic non-specific low back pain receiving cognitive treatment of illness perceptions: a rational approach to problem-solving, discussion skills and verbal skills.

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Background: People with multiple sclerosis (MS) are less physically active than those without the disease. Understanding the modifiable factors that are related to physical inactivity is important for developing effective physical activity programs.

Objective: The objectives of this study were to determine levels of physical activity and to determine factors related to the physical activity behavior of adults with MS by use of the Physical Activity for People With a Disability (PAD) model.

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Objectives: To describe the functional course over 5 years in patients aged 45 to 85 years with late-onset sequelae of poliomyelitis (LOSP) and to explore the impact of age and comorbidity.

Design: Prospective cohort study with 5 measurements over 5 years.

Setting: University hospital.

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Objective: To predict functioning after 3 years in patients with recently diagnosed multiple sclerosis (MS).

Design: Inception cohort with 3 years of follow-up. At baseline, predictors were obtained from medical history taking, neurologic examination, and magnetic resonance imaging (MRI).

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Objective: To study the effect of comorbidity on the course of physical functioning in patients after stroke and with multiple sclerosis.

Subjects: Patients after a first-ever supratentorial stroke (n = 198), who had been admitted for inpatient rehabilitaion, and patients with recently diagnosed multiple sclerosis (n =146).

Design: Prospective, observational study over a period of 3 years.

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Objective: The aim of this study was to identify the principal determinants that are longitudinally associated with the performance of social roles in the first 3 years following a diagnosis of multiple sclerosis.

Design: Inception cohort with 5 measurements over 3 years.

Patients: A total of 156 patients recently diagnosed with multiple sclerosis.

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Objective: To select a questionnaire and walking capacity test based on comparison of clinimetric properties and mutual association to be used as "core" qualifiers for physical functioning in patients with late-onset sequelae of poliomyelitis.

Design: Repeated-measures at 3-week intervals.

Subjects: An unselected sample of 57 patients with late-onset sequelae of poliomyelitis from a prospective cohort study.

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Study Design: An observational prospective cohort study.

Objectives: To determine the reliability of nonorganic sign-testing in patients with chronic low back pain (CLBP), and to identify determinants of diagnostic disagreement.

Summary Of Background Data: For the assessment of behavioral responses to examination, Waddell et al published "the Waddell score" in 1980.

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Objective: To investigate areas of consensus and disagreement among Dutch physiatrists concerning prescription of therapeutic footwear for the neuropathic foot and to develop a research agenda.

Study Design And Setting: Forty participants were physiatrists and experts in the field of orthopedic shoe techniques. Four postal Delphi rounds were followed by a final plenary session.

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Objectives: To describe the course of gross motor function over 2 years in children with cerebral palsy (CP) aged 9 to 15 years, and to investigate its relationship with impairments and age.

Design: Prospective cohort study.

Setting: Rehabilitation department of a university medical center in the Netherlands.

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We performed a cross-sectional study of 160 adult patients with severe cerebral palsy to study the relationship between radiographic hip disorders (migration and deformity of the femoral head), on the one hand, and complications such as handling problems, seating problems, decubitus ulcers, fractures and contractures, on the other hand. Both migration and deformity were positively related to the need for a special seat in the wheelchair and adduction contractures of the hip. We conclude that migration and deformity of the femoral head, if possible, should be prevented in patients with severe cerebral palsy.

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Objective: To describe the activities and participation of children with cerebral palsy and to examine the relationship with personal factors and disease characteristics.

Design: Cross-sectional study.

Setting: Department of Rehabilitation Medicine of a University Medical Center in The Netherlands.

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This study reviews the instruments used for the clinical assessment of spasticity in children with cerebral palsy, and evaluates their compliance with the concept of spasticity, defined as a velocity-dependent increase in muscle tone to passive stretch. Searches were performed in Medline, Embase, and Cinahl, including the keywords 'spasticity', 'child', and 'cerebral palsy', to identify articles in which a clinical method to measure spasticity was reported. Thirteen clinical spasticity assessment instruments were identified and evaluated using predetermined criteria.

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Objective: To develop a hierarchical scale that measures activity limitations in walking in patients with lower-extremity disorders who live at home.

Design: Cross-sectional study.

Setting: Orthopedic workshops and outpatient clinics of secondary and tertiary care centers.

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Objective: When comparing outcomes of the Functional Independence Measure (FIM ) between patient groups, item characteristics of the FIM should be consistent across groups. The purpose of this study was to compare item difficulty of the FIM in 3 patient groups with neurological disorders.

Subjects: Patients with stroke (n=295), multiple sclerosis (n=150), and traumatic brain injury (n=88).

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Objective: To improve a self-administered questionnaire that includes 42 dichotomous items and measures activity limitations in rising and sitting down (R&S) in patients with lower-extremity disorders who live at home.

Design: Cross-sectional study.

Setting: Outpatient clinics of secondary and tertiary care centers.

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Objectives: To review systematically studies of late-onset polio sequelae on the course of functional status and muscle strength over time and to identify prognostic factors of change.

Data Sources: We conducted a computerized literature search up to July 2004 in MEDLINE, EMBASE, CINAHL, Web of Science, PsychInfo, and the Cochrane controlled trial register using the key words: postpolio, postpoliomyelitis, postpoliomyelitis syndrome, post poliomyelitis muscular atrophy, and poliomyelitis.

Study Selection: Reports were selected by 1 reviewer if the study involved subjects with a history of poliomyelitis, the outcome measures described functional status or muscle strength, and follow-up was for at least 6 months.

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Clinimetrics in rehabilitation medicine, i.e. the field of developing, evaluating and applying measurement instruments, has undergone considerable progress.

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Objective: To measure the effect of botulinum toxin type A (BTX-A) treatment in children with cerebral palsy with regard to individual goals concerning functional abilities, using goal attainment scaling.

Design: A single-blind randomized multiple baseline/treatment phase design across subjects.

Setting: The paediatric department of a rehabilitation centre.

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