RT @smalll_eu: SAVE THE DATE - SMALLL CONGRES 2025. 📅 27 en 28 november 2025. 📍 Rotterdam. @WouterSchallig.

RT @lenzetal: Kudos to @AndrewCPeters0n's excellent work with @KarenKrugerPhD and I. Foot and ankle coordinate systems are a real challenge….

Join millions who have switched to Grok.

RT @Marjoleinvdk: Very proud of our great @amsterdamumc team at #ESMAC2023! @ESMAC_society

RT @AnnemiekeBU: A large delegation from The Netherlands at #Esmac2023 @ESMAC_society !

RT @KarenKrugerPhD: @JJKrzak and I are guest editing a special issue of Gait & Posture on the topic of "Emerging Technologies and Analytica….

RT @amsterdamumc: Uniek in Nederland: onze 3D-bewegingsanalyse met slimme software! 🙌 Hierdoor zijn geen markers (kleine bolletjes die op d….

Yesterday, I had the honor to receive the Jury and Audience award for the best PhD-thesis 2022 in Human Movement Sciences from the @VvBN_nieuws. I am very proud and truly thankful to all the people involved in my research and in the allocation of this award.

RT @Marjoleinvdk: First successful tests with our new markerless setup! Great teamwork of @theiamarkerless, @Vicon, @ProCare and @amsterdam….

RT @sjoerdmb: We (@DieenJaap, Bernadette van Wijk and me) are looking for a PostDoc for the StepUP project, working on the neural and biome….

RT @AMSmovement: You are warmly invited for the #rehabilitation symposium 'From research to implementation' on January 19. Veranda | Amst….

Good start of the new year, with a paper accepted in @SkeletalRadiol. In this paper we describe the use of weight-bearing CT in individuals with cerebral palsy to assess their foot deformity. Great multi-disciplinary collaboration within @AMSmovement! .

All this work would not have been possible without my supervisors: prof. Jaap Harlaar, prof. Mario Maas (@mmaas_mariom), dr. Josien van den Noort and dr. Marjolein van der Krogt (@Marjoleinvdk). A great example of a multi-disciplinary research team embedded within @AMSmovement.

The thesis finalizes with a general discussion in which we reflect on the clinical application of multi-segment foot models, methodological considerations and the future directions of the field of foot and ankle biomechanics during gait.

In chapter 7 (, we present the Amsterdam Foot Model, which is a novel clinically-informed multi-segment foot model. It builds upon the existing foot models and is explicitly based on minimizing the measurement errors, which are shown to be reduced in AFM.

In chapter 6 (, the marker placement sensitivity is evaluated. For both models each segment is sensitive (>1°/mm) to misplacement of at least one marker. Using the midpoint between marker can improve the robustness of the models to inconsistent placement.

In chapter 5 (, soft tissue artifacts (STA) are quantified. Average marker displacements up to 9mm were found, leading to average errors up to 7° and maximum values of 12°. The markers that are most affected by STA should not be used as tracking markers.

Since we wanted to gain insight in the models measurement errors, a low-dose CT-scan protocol was developed in chapter 4 ( including 10 scans with a total radiation dose similar to 1.5 times the dose of a single clinical foot scan and similar precision.

In chapter 3 (, a kinematic comparison is performed of two of the most-frequently used multi-segment foot models: the Oxford and Rizzoli foot models. Differences were found in static and dynamic conditions and these differences did depend on the gait type.

In chapter 2 (, the output of a mono- and multi-segment musculoskeletal model are compared and differences are shown in ankle angle and muscle tendon complex lengths. These differences are even larger in children with foot deformities compared to controls.

Curious what my PhD-thesis was about? It can be downloaded here: The following provides a very, very brief description of the research we have conducted the last years. #FootBiomechanics.