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Introduction: With the increased use of CTs in cases with trimalleolar ankle fractures, bone fragments between the posterior malleolus and the rest of the articular surface tibial plafond surface - described as intercalary fragments (ICFs) - can be recognized. The aim of this study was to determine the ICF size threshold for a significant change in the pressure distribution at the ankle joint, having a considerable impact on the remaining cartilage of the joint.
Design And Methods: Eight human cadaveric lower legs were used, and a posterior malleolus Bartonicek II fracture was created with sequential 2mm, 4mm, 6mm and 8mm ICFs.
Foot tissue stress in chronic ankle instability during the stance phase of cutting.
Med Biol Eng Comput
January 2025
Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
Lower limb biomechanics of chronic ankle instability (CAI) individuals has been widely investigated, but few have evaluated the internal foot mechanics in CAI. This study evaluated bone and soft tissue stress in CAI contrasted with copers and non-injured participants during a cutting task. Integrating scanned 3D foot shapes and free-form deformation, sixty-six personalized finite element foot models were developed.
View Article and Find Full Text PDFIntramuscular pH monitoring before and during exercise in individuals with intermittent claudication compared to healthy controls: A feasibility study.
Sci Prog
January 2025
Department of Trauma and Orthopaedics, NHS Grampian, Aberdeen, UK.
Objective: In this feasibility study, firstly, we aimed to assess whether intramuscular pH (IMpH) could be measured with a glass-tipped electrode. Secondly, we aimed to explore whether we could monitor changes in skeletal muscle pH before and throughout static (isometric) and after dynamic (treadmill) exercise, comparing individuals with intermittent claudication (IC) to a group of healthy controls.
Methods: Forty participants with IC (mean age ± SD) 68 ± 8) and 40 healthy volunteers (63 ± 10) were recruited.
DIAMACC: protocol of a prospective diagnostic accuracy study of the maximal systolic acceleration to detect peripheral arterial disease in patients with diabetes-related foot ulceration in the Netherlands.
BMJ Open
December 2024
Department of Vascular Surgery, Leids Universitair Medisch Centrum, Leiden, The Netherlands.
Introduction: Foot ulcers are one of the most serious complications of diabetes, leading to significant risks on amputation and mortality. Peripheral arterial disease (PAD) is an important factor for the development and the outcome of diabetic foot ulcers (DFU). Although prompt and accurate detection of PAD is critical to reduce complications, its diagnosis can be challenging with currently used bedside tests (such as ankle-brachial index and toe pressure) due to medial arterial calcification.
View Article and Find Full Text PDFBackground: The goal of this study was to examine the effects of spinal cord stimulation (SCS) on muscle activity during walking after lower-limb amputation. Amputation results in a loss of sensory feedback and alterations in gait biomechanics, including co-contractions of antagonist muscles about the knee and ankle, and reduced pelvic obliquity range-of-motion and pelvic drop. SCS can restore sensation in the missing limb, but its effects on muscle activation and gait biomechanics have not been studied in people with lower-limb amputation.
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