Pieter U Dijkstra

Pieter U Dijkstra
University of Groningen | RUG · University Medical Center Groningen (UMCG)

PhD , Professor

About

516
Publications
220,913
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19,381
Citations
Additional affiliations
January 1987 - present
University of Groningen
Position
  • Researcher

Publications

Publications (516)
Article
Purpose: To describe perceptions and experiences of people who have undergone a major dysvascular lower limb amputation (LLA) regarding nutrition, and to identify perceived barriers and facilitators regarding nutritional intake. Methods: In this phenomenological qualitative study, individual, semi-structured, face-to-face, interviews were conduc...
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Several new systems for three-dimensional (3D) surface imaging of the face have become available to assess changes following orthognathic or facial surgery. Before they can be implemented in practice, their reliability and validity must be established. Our aim, therefore, was to study the intra- and inter-system reliability and validity of 3dMD (st...
Article
Objectives: Scleroderma is a heterogeneous chronic autoimmune disease affecting connective tissue, characterised by chronic inflammation and fibrosis, particularly affecting internal organs and skin. Orofacial involvement is common, leading to facial atrophy, mask-like appearance and difficulties in function that significantly impact patients' qua...
Article
Objective(s) To explore learning effects when applying the clinician‐graded electronic facial function scale (eFACE) and the Sunnybrook Facial Grading System (Sunnybrook). Methods Surgeons, facial rehabilitation therapists, and medical students were randomly allocated to the eFACE ( n = 7) or Sunnybrook ( n = 6) and graded 60 videos (Massachusetts...
Article
Purpose: To determine prevalence of musculoskeletal complaints (MSCs) in adults with major congenital upper limb differences (CoULD) compared to able-bodied controls, and to examine associations of MSCs and disability with various biopsychosocial factors. Materials and methods: Questionnaire-based cross-sectional study assessing MSCs, disability...
Preprint
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Introduction Several new systems of three-dimensional (3D) surface imaging of the face have become available to assess changes following orthognathic or facial surgery. Before they can be implemented into practice their reliability and validity must be established. Our aim was therefore to study 3dMD (stereophotogrammetry), Artec Eva and Artec Spac...
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Jaw motion tracking functionalities of cone beam computed tomography (CBCT)-scanners can visualize, record, and analyze movements of the mandible. In this explorative study, the validity of the 4D-Jaw Motion module (4D-JM) of the ProMax 3D Mid CBCT scanner (Planmeca, Helsinki, Finland) was tested in vitro. The validity of the 4D-JM was accepted if...
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Objective: Complex Regional Pain Syndrome type I (CRPS-I) is an often intractable regional pain syndrome, usually affecting limbs in which amputation may be a final resort. Not all patients are suited for amputation.This retrospective case series with explorative interviews aims to gain insight in the quality of life in those who have been denied...
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Background: Lisfranc and Chopart amputations are historically controversial procedures. To obtain evidence for the pros and cons we performed a systematic review to analyze wound healing, the need for re-amputation at a higher level, and ambulation after a Lisfranc or Chopart amputation. Methods: A literature search was performed in 4 databases...
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Increasingly, patients suffering from subjective tinnitus seek help from physical therapists. Numerous randomised controlled trials (RCTs) have investigated the effect of physical interventions commonly used in physical therapy practice on subjective tinnitus. This systematic review and meta-analysis aimed to analyse the effects of physical interve...
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Purpose: To systematically review literature on nutritional intake, nutritional status and nutritional interventions, and to study their association with short- and long-term clinical outcomes in people with a major dysvascular lower limb amputation. Methods: PubMed, Ovid, CINAHL, and The Cochrane Library were searched. Studies were included if...
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Objectives This study aims to assess whether different voxel sizes in cone-beam computed tomography (CBCT) affected surface area measurements of dehiscences and fenestrations in the mandibular anterior buccal region. Materials and methods Nineteen dry human mandibles were scanned with a surface scanner (SS). Wax was attached to the mandibles as...
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Purpose: (1) To determine the prevalence of musculoskeletal complaints (MSCs) in the non-affected bodily structures in individuals with brachial plexus injury (BPI) and (2) to analyse factors associated with MSCs and disability. Methods: Survey among individuals with BPI and a control group. Multivariable logistic and linear regression analyses...
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Applying the right torque to osteosynthesis screws is important for undisturbed bone healing. This study aimed to compare test–retest and intra-individual reliabilities of the torque applied to 1.5 mm and 2.0 mm osteosynthesis screws by residents and oral and maxillofacial surgeons (OMF-surgeons), to define the reference torque intervals, and to co...
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Measurement properties of the Working Alliance Inventory (WAI) and its various translations and adaptations for specific target groups have been investigated for over 30 years. No systematic review analyzing studies on measurement properties of the WAI has been conducted to date. COnsensus-based Standards for the selection of health Measurements IN...
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The first (VT1) and second ventilator (VT2) (anaerobic) thresholds are used to individually prescribe exercise training programs. The purpose of this research was to analyze inter- and intraobserver reliabilities of determining VT1 and VT2 in subjects with lower limb amputation (LLA) and able-bodied (AB) subjects during a peak exercise test on the...
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Introduction Dance can reduce motor symptoms in persons with Parkinson’s disease (PD). However, the effect on psychosocial wellbeing, including self-esteem and quality of life is less clear. Methods Forty-nine persons with PD (Hoehn and Yahr stage 1–4) participated in weekly dance classes for a consecutive period of 22 weeks, 36 participants compl...
Article
The aim of this study was to perform a systematic review of the literature on the temporomandibular joint (TMJ) prosthesis as a treatment option after mandibular condyle fracture. Three databases were searched (PubMed, Embase, Cochrane Library) and 2670 unique papers were identified. A total of 337 studies were included (121 case reports, 89 case s...
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Background For decades, facial fat grafting is used in clinical practice for volume restoration. The main challenge of this technique is the variable volume retention. Over the past years, studies reported the addition of supplements to augment the fat graft to increase volume retention. Objectives The aim of this systematic review was to investiga...
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Background For decades, facial fat grafting is used in clinical practice for volume restoration. The main challenge of this technique is the variable volume retention. Over the past years, studies reported the addition of supplements to augment the fat graft to increase volume retention. Objectives The aim of this systematic review was to investig...
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Objectives To analyze differences in variation of orthodontic diagnostic measurements on lateral cephalograms reconstructed from ultra low dose-low dose (ULD-LD) cone beam computed tomography (CBCT) scans (RLC) as compared to variation of measurements on standard lateral cephalograms (SLC), and to determine if it is justifiable to replace a traditi...
Article
Background: In previous studies, noncontact 3D scanners were found to be the most reliable in measuring volume of the residual limb after a transtibial amputation (TTA). Meanwhile newly developed noncontact scanners became available to measure residual limb volume after TTA but should be tested for clinical usability and reliability. Objective:...
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Introduction Various forms of videoconferenced collaborations exist in oncology care. In regional oncology networks, multidisciplinary teams (MDTs) are essential in coordinating care in their region. There is no recent overview of the benefits and drawbacks of videoconferenced collaborations in oncology care networks. This scoping review presents a...
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Background: Pain and disability are important components of the assessment of hand problems, but it is unknown how physician estimates compare to patient self-reports. Objective: To analyse differences between patient-reported and physician-estimated pain and disability in patients with hand or wrist disorders and to analyse factors influencing...
Article
Purpose: Many patients with coronary artery disease (CAD) do not achieve the recommended physical activity (PA) levels during and after cardiac rehabilitation (CR). The aim of this study was to analyze moderate to vigorous physical activity (MVPA) levels and the differences between perceived (self-reported) and measured (activity monitor) MVPA in...
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Background Obesity is common in persons with a lower limb amputation, an amputation can also lead to further weight gain. Data regarding the prevalence of obesity in the Dutch population with a lower limb amputation are lacking. Furthermore, the impact of obesity on skin problems of the residual limb and the need of prosthetic repairs is unknown. T...
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Abstract Background To evaluate cycling participation and identify barriers and facilitators related to cycling participation in people with a lower limb amputation (LLA) in the Netherlands. Methods A questionnaire was sent to adults with a LLA between March and August 2019 to obtain information regarding prosthesis, individual’s characteristics, a...
Article
Importance: Understanding how the quality of life of adults (≥18 years) with peripheral facial palsy can be estimated using clinician measures of facial function and patient-reported variables might aid in counseling patients and in conducting research. Objectives: To analyze associations between clinician-graded facial function and patient-repo...
Article
Objective(s): To interpret change in quality-of-life scores in facial palsy patients by calculating the smallest detectable change (SDC) and minimal important change (MIC) for the Facial Disability Index (FDI), Facial Clinimetric Evaluation (FaCE) scale, and Synkinesis Assessment Questionnaire (SAQ). Materials and Methods: The SDC, for individuals...
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Titanium osteosynthesis is currently the gold standard in orthognathic surgery. Use of biodegradable osteosyntheses avoids removal of plates/screws in a second operation. This systematic review aimed to assess the efficacy and morbidity of biodegradable vs. titanium osteosyntheses in orthognathic surgery (PROSPERO CRD42018086477). Patients with syn...
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Purpose This study aimed to explore factors that influence participants’ perceptions of the therapeutic alliance with healthcare professionals; their participation in the alliance; and their commitment to treatment in a multidisciplinary pain rehabilitation setting. Materials and methods A qualitative research-design was used and 26 participants i...
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Objective: To assess satisfaction of prosthesis users with their prostheses, and the problems they experience with the residual limb, using a checklist, in order to evaluate potential benefits of checklist use and to summarize issues and problems with the prosthesis and/or residual limb presented by prosthesis users. Design: Cross-sectional stud...
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Background: Facial palsy rehabilitation therapy plays an essential role in treating facial palsy. Purpose: This study aimed to gain insight into therapists’ perceptions and attitudes toward facial palsy rehabilitation therapy and to examine whether therapists could be categorized into distinct groups based on these attitudes and perceptions. Method...
Preprint
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Background: A lower limb amputation can lead to weight gain and obesity. However, data regarding the prevalence of obesity in the Dutch population with a lower limb amputation are lacking. Furthermore, the impact of obesity on skin problems of the residual limb and the need of prosthetic repairs is unknown. The aim of this study was to determine th...
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Purpose In persons with a hip or knee flexion contracture ≥25°, fitting a prosthesis is said to be difficult. This systematic review aims to assess the evidence for fitting of a prosthesis in persons with a severe contracture (≥25°) after a lower limb amputation. Method PubMed, Embase, Scopus, CINAHL, and Orthotics & Prosthetics Virtual Library da...
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Introduction: The reorganisation of the structure of a Gastro-Intestinal Oncology Multidisciplinary Team Meeting (GIO-MDTM) in a tertiary centre with three care pathways is evaluated on added value. Methods: In a mixed method investigation, process indicators such as throughput times were analysed and stakeholders were interviewed regarding bene...
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Aim To perform a scoping literature review of associations between risk factors in early life and developmental coordination disorder (DCD). Method PubMed, Embase, CINAHL, PsycINFO, and Web of Science (January 1994–March 2019) were searched to identify studies on early risk factors and motor impairment or DCD. The effect of single and multiple ris...
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Purpose Patient-reported outcome measures are essential in the evaluation of facial palsy. Aim of this study was to translate and validate the Facial Disability Index (FDI) for use in the Netherlands. Methods The FDI was translated into Dutch according to a forward-backward method. Construct validity was assessed by formulating 22 hypotheses regar...
Article
Layperson assessments are becoming increasingly important in the evaluation of surgical procedures of the face, including smile reanimation. In this study, the authors set out to answer 3 questions: (1) are esthetic scores more dependent on the assessor or the person that is being assessed, (2) how does smile reanimation change esthetic scores, (3)...
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Purpose To analyse the number of, timing of, and reasons for early termination of interdisciplinary pain rehabilitation (IPR). Methods A multicentre study in two Dutch rehabilitation centres with a mixed method design. Quantitative part: retrospective patient file review of all IPR patients. Qualitative part: 20 semi-structured patient interviews...
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To determine prospectively gross and fine motor development of children <2 years of age, who undergo LTX. In this prospective study, children aged <2 years who undergo LTX were tested using the motor scale of the Bayley Scales of infant and toddler development, 3rd edition Dutch version. Testing was done during screening pre‐ and post‐LTX: at the t...
Article
Objective: To assess long-term outcomes of amputation in patients with long-standing therapy-resistant complex regional pain syndrome type I (CRPS-I). Design: Partly cross-sectional, partly longitudinal study. Subjects: Patients' who had amputation of a limb due to long-standing, therapy-resistant CRPS-I, at the University Medical Centre Groni...
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Purpose: The aim of this study is to systematically review and critically assess the methodological quality of literature regarding prevalence, characteristics and factors influencing pain, other than phantom limb pain (PLP) in persons with lower limb amputation (LLA). Materials and methods: A systematic review was performed (PROSPERO CRD4201913801...
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Background To prescribe early trismus therapy, prognostic factors influencing the restricted mouth opening should be identified first. Our aim is to present an overview of these factors in patients with head and neck cancer. Methods PubMed, Cochrane, EMBASE, and CINAHL were searched using terms related to head and neck cancer and mouth opening. Ri...
Article
In Reply Lin and Sol refer to some limitations in our study. First we fully agree that the study, as every study, has its limitations.¹ They assume that facial palsy may influence socioeconomic status and therefore health-related quality of life (HRQoL). We performed additional univariate analyses to explore this assumption. We found no significant...
Article
Objective: To investigate the prosthetic and service satisfaction in cycling and non-cycling adults with a lower limb amputation in Thailand and to analyze factors associated with satisfaction. Materials and Methods: Orthotics and Prosthetics Users’ Survey questionnaire was given to 424 adults with uni or bilateral lower limb amputation in five pub...
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Little is known about facial function assessments of inexperienced observers in facial palsy. In this observational study learning curve was examined of two inexperienced observers assessing facial function of 100 patients using the Sunnybrook Facial Grading System. Interobserver agreement gradually improved over time, stabilizing after approximate...
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Background Special feet connected to a prosthesis, prosthetic sports feet, enable athletes with a lower limb amputation to run. The selection of a prosthetic sports feet is usually based on body weight and preferred sports performance. The selection of a prosthetic sport feet is also based on clinicians who likely have limited experience due to a s...
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Importance Knowledge of factors associated with health-related quality of life in patients with facial palsy may aid in better interpreting outcomes of research and treatment. Objective To identify factors associated with health-related quality of life in patients with facial palsy. Design, Setting, and Participants The inclusion period for parti...
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Three-dimensional stereophotogrammetry is not much used in assessing facial palsy and a comprehensive understanding of sources of variation in these measurements is lacking. The present study assessed intra- and interobserver reliability of a novel three-dimensional stereophotogrammetry measurement of facial asymmetry and examined sources of variat...
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Purpose: Existing physical activity interventions do not reach a considerable proportion of physically disabled people. This study assessed feasibility and short-term effects of Activity Coach+, a community-based intervention especially targeting this hard-to-reach population. Methods: Feasibility was determined by reach, dropouts, and compliance w...
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The aim of this study is to determine the 15 most important daily activities according to persons with lower limb amputation (LLA) and healthcare professionals. Persons with LLA (n = 125) and healthcare professionals (n = 44) filled in a questionnaire. Participants had to select 10 items out of a list of 40 items on the domains activity and/or part...
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Case presentation: A 61-year-old woman diagnosed with long standing, therapy resistant CRPS-1 fourteen years prior was referred to our center for assessment on her wish to have her limb amputated, due to recent worsening of the symptoms. A soft tissue lesion was detected on the affected limb and she was sent back to her primary hospital for further...
Article
Titanium osteosynthesis is currently the fixation system of choice in maxillofacial traumatology. Biodegradable osteosynthesis systems have the ability to degrade in the human body. The aim of this study was to conduct a systematic review, with meta- and trial sequential analyses, to assess the efficacy and morbidity of biodegradable versus titaniu...
Article
Objective: To report the rates of persons returning home within one year following dysvascular major amputation of the lower limb in the Netherlands, and to identify factors associated with returning home directly after hospital admission and after discharge to care facilities. Design: Retrospective cohort study. Patients: Dysvascular major am...
Article
Objective: As journal impact factors (IFs) can be artificially inflated by excessive journal self-citation practices, research quality evaluation based solely on IF ranking may be manipulated and, therefore, ethically challenged. This study aimed to analyze the longitudinal development of journal self-citation rates (SCRs) and IFs in dental literat...
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Purpose To compare the effects of two stretching devices, the TheraBite® Jaw Motion Rehabilitation System™ and the Dynasplint Trismus System®, on maximal mouth opening in head and neck cancer patients. Methods Patients were randomly assigned to one of two exercise groups: the TheraBite® Jaw Motion Rehabilitation System™ group or the Dynasplint Tri...
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Objectives Given the difficulties in diagnosing and treating head-and-neck cancer, care is centralised in the Netherlands in eight head-and-neck cancer centres and six satellite regional hospitals as preferred partners. A requirement is that all patients of the partner should be discussed in a multidisciplinary team meeting (MDT) with the head-and-...
Article
Background: Historically, mortality rates after major lower limb amputation (LLA) have been very high. However, there are inconsistencies regarding the risk factors. Reamputation rate after major LLA is largely unknown. The aim of this study is to report the 30 days and 1 year mortality and 1 year reamputation rates after major LLA and to identify...
Article
Background: The L-Dex U400 is a recently developed measurement device to aid in the clinical assessment of unilateral lymphedema. Until now, little is known about variation in measurement results of the L-Dex U400. The aim of this study was to determine variation in measurement results in determining extracellular fluid of the arm with the L-Dex U4...
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Aim To investigate cycling participation and barriers, and facilitators in adults with a lower limb amputation in Thailand. Method Questionnaires were given to 424 adults with uni/bilateral lower limb amputation from midfoot to hip disarticulation level at five public hospitals in Bangkok and prosthetic mobile units in Thailand. Participant charac...
Article
Objectives: To assess the diagnostic accuracy of two smartphone cephalometric analysis apps compared with Viewbox software. Materials and methods: Pretreatment digital lateral cephalograms of 50 consecutive orthodontic patients (20 males, 30 females; mean age, 19.1 years; SD, 11.7) were traced twice using two apps (ie, CephNinja and OneCeph), wi...
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Study design: Cross-sectional study. Objective: The aim of this study was to study the personal and societal impact of low back pain (LBP) in patients admitted to a multidisciplinary spine center. Summary of background data: The socioeconomic burden of LBP is very high. A minority of patients visit secondary or tertiary care because of severe...
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Purpose It is presumed that adequate reduction of a fracture of the mandible favors bone healing and diminishes the risk of complications. In this retrospective study, we compared the accuracy of fracture alignment and complication rate of mandibular fractures reduced without or with aid of a repositioning forceps. Methods Retrospective analysis o...
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To determine physical activity (PA), aerobic fitness, muscle strength, health‐related quality of life (HRQOL), fatigue, and participation in children after liver transplantation. Children, 6‐12 years, at least one year after liver transplantation, participated in this cross‐sectional study. Measurements: Time spent in moderate to vigorous PA (MVPA)...
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Aim: To explore perceptions and preferences of children, parents, and physical therapists regarding the therapeutic alliance in pediatric physical therapy in a rehabilitation setting. Methods: Qualitative phenomenological analysis of interviews with children (n = 10), their parents (n = 10), and physical therapists (n = 10). Results: Three themes w...
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Objective To systematically review the literature on the metabolic costs of activities of daily living (ADL) in persons with a lower limb amputation (LLA). Data sources A literature search was undertaken in the Pubmed, Embase, CINAHL, CENTRAL, and PsycINFO databases using keywords and synonyms for LLA, metabolic costs, and ADL. The last search was...
Data
Frequencies of the reported outcome variables. HR heart rate; PCI physiological cost index; %HRR % heart rate reserve; RER respiratory exchange ratio; RR respiratory rate; BP blood pressure; METs metabolic equivalent of task; RQ respiratory quotient; EEI energy expenditure index. (DOCX)