Fracture of the posterior medial tubercle of the talus: a case report and review of the literature

Isolated fracture of the posterior medial tubercle of the talus is a rare injury. To our knowledge the fracture has only been described by five different authors. We diagnosed lately a fracture after a direct trauma. Non-operative treatment with custom made insoles and counselling lead to a acceptable outcome

Clinical Applicability of an Existing Proportionality Scheme in Three-Segment Kinetic Foot Models

An important methodological challenge in multi-segment kinetic foot models is to partition the total ground reaction force across different foot segments. Several studies applied a proportionality scheme based on the combination of a pressure- and force platform. A recent study highlighted distinct errors in the partitioning of shear forces when using this proportionality scheme. To date, the impact of this shear force partitioning error analysis on joint moment calculations using inverse dynamic calculations in pathological gait is not known. Hence, the goal of this study was to investigate the clinical applicability of an existing proportionality scheme by extending the shear force partitioning error analysis towards joint moment calculations. Both healthy (n = 10) and pathological gait (n = 10) was assessed using (I) an adjacent force plate method and (II) the estimation method based on an existing proportionality scheme. A correction factor matrix was developed to compensate for the shear force partitioning errors in the estimation method. Extending the shear force partitioning error analysis towards joint moments using inverse dynamic calculations, did not reveal significant differences when comparing corrected joint moments with the estimated joint moments in both healthy and pathological gait.status: publishe

Clinical Applicability of an Existing Proportionality Scheme in Three-Segment Kinetic Foot Models (vol 75, pg 871, 2019)

This article was updated to correct Giovanni A. Matricali's name.status: publishe

Preliminary Evidence That Taping Does Not Optimize Joint Coupling of the Foot and Ankle Joints in Patients with Chronic Ankle Instability

Background: Foot–ankle motion is affected by chronic ankle instability (CAI) in terms of altered kinematics. This study focuses on multisegmental foot–ankle motion and joint coupling in barefoot and taped CAI patients during the three subphases of stance at running. Methods: Foot segmental motion data of 12 controls and 15 CAI participants during running with a heel strike pattern were collected through gait analysis. CAI participants performed running trials in three conditions: barefoot running, and running with high-dye and low-dye taping. Dependent variables were the range of motion (RoM) occurring at the different inter-segment angles as well as the cross-correlation coefficients between predetermined segments. Results: There were no significant RoM differences for barefoot running between CAI patients and controls. In taped conditions, the first two subphases only showed RoM changes at the midfoot without apparent RoM reduction compared to the barefoot CAI condition. In the last subphase there was limited RoM reduction at the mid- and rearfoot. Cross-correlation coefficients highlighted a tendency towards weaker joint coupling in the barefoot CAI condition compared to the controls. Joint coupling within the taped CAI conditions did not show optimization compared to the barefoot CAI condition. Conclusions: RoM was not significantly changed for barefoot running between CAI patients and controls. In taped conditions, there was no distinct tendency towards lower mean RoM values due to the mechanical restraints of taping. Joint coupling in CAI patients was not optimized by taping

Quantifying clinical misinterpretations associated to one-segment kinetic foot modelling in both a healthy and patient population

BACKGROUND: Rigid foot modelling approaches are still widely used to assess ankle joint kinetics in clinical biomechanical research. Yet, studies on healthy subjects using multi-segment kinetic foot models indicated that one-segment kinetic foot models tend to overestimate ankle joint kinetic data. Our aim was to compare ankle joint kinetics computed with a one-segment versus a multi-segment kinetic foot model in both asymptomatic and pathological gait. We also assessed whether differences between models can lead to different interpretations in clinical decision-making. METHODS: A two-factor repeated measure analysis of variance was performed to investigate differences in ankle joint kinetics, with the first factor being group effect (control vs. patients) and second factor being foot model effect (one-segment vs. multi-segment). Minimal detectable change was calculated to assess the clinical relevance of the observed differences in ankle joint kinetics. FINDINGS: Ankle joint peak kinematic, angular velocity and kinetic variables were all significantly overestimated (P < 0.05) when computed with the one-segment kinetic foot model. Kinetic differences in peak plantarflexion angular velocity and peak power generation were higher than their MDC-values. INTERPRETATION: Ankle joint kinetics are significantly overestimated when computed with a rigid foot modelling approach in both asymptomatic and pathological gait. This overestimation leads to clinical misinterpretations as MDC-values were less than the observed overestimation. In future studies, it is of clinical relevance to assess ankle joint kinetics with a multi-segment foot modelling approach.status: publishe

Comparison of foot segmental mobility and coupling during gait between patients with diabetes mellitus with and without neuropathy and adults without diabetes

Reduction in foot mobility has been identified as a key factor of altered foot biomechanics in individuals with diabetes mellitus. This study aimed at comparing in vivo segmental foot kinematics and coupling in patients with diabetes with and without neuropathy to control adults.publisher: Elsevier articletitle: Comparison of foot segmental mobility and coupling during gait between patients with diabetes mellitus with and without neuropathy and adults without diabetes journaltitle: Clinical Biomechanics articlelink: http://dx.doi.org/10.1016/j.clinbiomech.2013.06.008 content_type: article copyright: Copyright © 2013 Elsevier Ltd. All rights reserved.status: publishe

Negative determinants of diabetic foot ulcer healing: a 6 month follow-up of a large multicentre cohort

status: publishe