Jan Geertzen

Prof. Dr. Jan Geertzen

orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
7 July 2016 in Pediatric Rheumatology
Verified
Journal Article
Open access
PDF file
GBG. J. F. Joyce Bos
G. J. F. Joyce Bos
OLOtto T. H. M. Lelieveld
Otto T. H. M. Lelieveld
WAWineke Armbrust
Wineke Armbrust
PSPieter J. J. Sauer
Pieter J. J. Sauer
JGJan Geertzen
Jan Geertzen
PDPiet Dijkstra
Piet Dijkstra
To compare physical activity (PA) in children with juvenile idiopathic arthritis (JIA) with controls and to analyse the effect of disease specific factors on PA in children with JIA treated according to current treatment regimes. PA was measured with a 7-day activity diary and expressed as physical activity level (PAL). Moderate to vigorous physical activity (MVPA) (hours/day) and sedentary time (hours/day) was determined. In children with JIA, medication, the number of swollen and/or painful joints, disease activity, functional ability, pain and well-being was determined. Multivariate regression analysis was performed to analyze differences in PA between JIA and controls, adjusted for influences of age, gender, season, Body Mass Index (BMI) and to analyze predictors of PA in JIA patients. Seventy-six children with JIA (26 boys and 50 girls, mean ± SD age 10.0 ± 1.4 years) and 131 controls (49 boys and 82 girls, mean ± SD age 10.4 ± 1.2 years) participated in this study. Children with JIA had a significantly lower PAL (0.10, p = 0.01) corrected for age, BMI, gender and season. They spent less time in MVPA (0.41 h/day, p = 0.06) and had a significantly higher mean time spent in sedentary activities (0.59 h/day, p 0.02) compared to controls. The activity level of children with JIA was related to age, gender, season, feeling of well-being and pain. Children with JIA have a lower PAL, spent less time in MVPA and spent more time on sedentary activities compared to controls despite current medical treatment and PA encouragement. Data of the children with JIA are from the Rheumates@work study ISRCTN92733069 .

13 May 2019 in Disability and Rehabilitation
Verified
Journal Article
Open access
THTjitske Hielkema
Tjitske Hielkema
EHElisa G. Hamer
Elisa G. Hamer
ABAnke G. Boxum
Anke G. Boxum
SGSacha la Bastide-van Gemert
Sacha la Bastide-van Gemert
TDTineke Dirks
Tineke Dirks
LGL2M 0-2 Study Group
L2M 0-2 Study Group
Purpose: Evidence for efficacy of early intervention in infants at high risk of cerebral palsy (CP) is limited. We compared outcome of infants at very high risk of CP after receiving the family centered program COPing with and CAring for infants with special needs (COPCA) or typical infant physiotherapy. Materials and methods: Forty-three infants were randomly assigned before the corrected age of 9 months to 1 year of COPCA (n = 23) or typical infant physiotherapy (n = 20). Neuromotor development, cognition, and behavior was assessed until 21 months corrected age. Video-recorded physiotherapy sessions were quantitatively analyzed for further process analyses. Outcome was evaluated with nonparametric tests and linear mixed effect models. Results: During and after the interventions, infant outcome in both intervention groups was similar [primary outcome Infant Motor Profile: COPCA 82 (69–94), typical infant physiotherapy 81 (69–89); Hodges Lehman estimate of the difference 0 (confidence interval −5;4)]. Outcome was not associated with contents of intervention. Conclusions: One year of COPCA and 1 year of typical infant physiotherapy in infants at high risk of CP resulted in similar neurodevelopmental outcomes. It is conceivable that combinations of active ingredients from different approaches are needed for effective early intervention.

1 October 2015 in Prosthetics and Orthotics International
Verified
Journal Article
Closed access
JGJan Geertzen
Jan Geertzen
HLHarmen van der Linde
Harmen van der Linde
KRKitty Rosenbrand
Kitty Rosenbrand
MCMarcel Conradi
Marcel Conradi
JDJos Deckers
Jos Deckers
HVHarrie Voesten
Harrie Voesten
A structured, multidisciplinary approach in the rehabilitation process after amputation is needed that includes a greater focus on the involvement of both (para)medics and prosthetists. There is considerable variation in prosthetic prescription concerning the moment of initial prosthesis fitting and the use of replacement parts. To produce an evidence-based guideline for the amputation and prosthetics of the lower extremities. This guideline provides recommendations in support of daily practice and is based on the results of scientific research and further discussions focussed on establishing good medical practice. Part 2 focuses on rehabilitation process and prosthetics. Systematic literature design. Literature search in five databases and quality assessment on the basis of evidence-based guideline development. An evidence-based multidisciplinary guideline on amputation and prosthetics of the lower extremity. The best care (in general) for patients undergoing amputation of a lower extremity is presented and discussed. This part of the guideline provides recommendations for treatment and reintegration of patients undergoing amputation of a lower extremity and can be used to provide patient information. This guideline provides recommendations in support of daily practice and is based on the results of scientific research and further discussions focussed on establishing good medical practice.

13 May 2019 in Disability and Rehabilitation
Verified
Journal Article
Open access
THTjitske Hielkema
Tjitske Hielkema
EHElisa G. Hamer
Elisa G. Hamer
ABAnke G. Boxum
Anke G. Boxum
SGSacha la Bastide-van Gemert
Sacha la Bastide-van Gemert
TDTineke Dirks
Tineke Dirks
MHMijna Hadders-Algra
Mijna Hadders-Algra

8 June 2012 in BMC Musculoskeletal Disorders
Verified
Journal Article
Open access
PDF file
JNJaap J. Van Netten
Jaap J. Van Netten
PDPiet Dijkstra
Piet Dijkstra
JGJan Geertzen
Jan Geertzen
KPKlaas Postema
Klaas Postema
Despite potential benefits, some patients decide not to use their custom-made orthopaedic shoes (OS). Factors are known in the domains ‘usability’, ‘communication and service’, and ‘opinion of others’ that influence a patient’s decision to use OS. However, the interplay between these factors has never been investigated. The aim of this study was to explore the interplay between factors concerning OS, and the influences thereof on a patient’s decision to use OS.

1 October 2015 in Prosthetics and Orthotics International
Verified
Journal Article
Closed access
JGJan Geertzen
Jan Geertzen
HLHarmen van der Linde
Harmen van der Linde
KRKitty Rosenbrand
Kitty Rosenbrand
MCMarcel Conradi
Marcel Conradi
JDJos Deckers
Jos Deckers
HVHarrie Voesten
Harrie Voesten
Surgeons still use a range of criteria to determine whether amputation is indicated. In addition, there is considerable debate regarding immediate postoperative management, especially concerning the use of ‘immediate/delayed fitting’ versus conservative elastic bandaging. To produce an evidence-based guideline for the amputation and prosthetics of the lower extremities. This guideline provides recommendations in support of daily practice and is based on the results of scientific research and further discussions focussed on establishing good medical practice. Part 1 focuses on amputation surgery and postoperative management. Systematic literature design. Literature search in five databases. Quality assessment on the basis of evidence-based guideline development. An evidence-based multidisciplinary guideline on amputation and prosthetics of the lower extremity. The best care (in general) for patients undergoing amputation of a lower extremity is presented and discussed. This part of the guideline provides recommendations for diagnosis, referral, assessment, and undergoing amputation of a lower extremity and can be used to provide patient information. This guideline provides recommendations in support of daily practice and is based on the results of scientific research and further discussions focussed on establishing good medical practice.