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All Suture Biceps Tenodesis Has Greater Biomechanical Strength Than Metal Button Fixation.
Arthrosc Sports Med Rehabil
December 2024
Department of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland, U.S.A.
Purpose: To evaluate the maximal load to failure, cyclic displacement, stiffness, and modes of failure of onlay subpectoral biceps tenodesis with an intramedullary unicortical metal button (MB) versus an inlay, all-suture Caspari-Weber (CW) technique.
Methods: Sixteen matched paired human cadaveric proximal humeri were randomly allocated for subpectoral BT with either CW or MB using a high-strength suture (N = 16; 8 male, 8 female, mean age = 82.5 years, range 62-99 years).
Application of 3D-printed porous prosthesis for the reconstruction of infectious bone defect with concomitant severe soft tissue lesion: a case series of 13 cases.
BMC Musculoskelet Disord
December 2024
Department of Orthopedics, Peking University Third Hospital, No.49, North Garden Rd, HaiDian District, Beijing, 100191, China.
Background: Treating infectious bone defects combined with large soft-tissue lesions poses significant clinical challenges. Herein, we introduced a modified two-stage treatment approach involving the implantation of 3D-printed prostheses and flap repair to treat large segmental infectious tibial bone defects.
Method: We conducted a retrospective study of 13 patients treated at our center between April 2018 and March 2022 for tibial infections owing to posttraumatic infection and chronic osteomyelitis combined with soft tissue defects.
Focused ion beam (FIB) prepared microtextured microneedle array capable of delivering drugs through punctured skin.
Sci Rep
December 2024
School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.
Microtextured microneedles are tiny needle-like structures with micron-scale microtextures, and the drugs stored in the microtextures can be released after entering the skin to achieve the effect of precise drug delivery. In this study, the skin substitution model of Ogden's hyperelastic model and the microneedle array and microtexture models with different geometrical parameters were selected to simulate and analyse the flow of the microtexture microneedle arrays penetrating the skin by the finite-element method, and the length of the microneedles was determined to be 200 μm, the width 160 μm, and the value of the gaps was determined to be 420 μm. A four-pronged cone was chosen as the shape of microneedles, and a rectangle was chosen as the shape of the drug-carrying microneedle.
View Article and Find Full Text PDFContinuous-Context, User-Independent, Real-Time Intent Recognition for Powered Lower-Limb Prostheses.
J Biomech Eng
February 2025
Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 813 Ferst Drive NW, Atlanta, GA 30332; Institute for Robotics and Intelligent Machines, Georgia Institute of Technology, 813 Ferst Drive NW, Atlanta, GA 30332.
Community ambulation is essential for maintaining a healthy lifestyle, but it poses significant challenges for individuals with limb loss due to complex task demands. In wearable robotics, particularly powered prostheses, there is a critical need to accurately estimate environmental context, such as walking speed and slope, to offer intuitive and seamless assistance during varied ambulation tasks. We developed a user-independent and multicontext, intent recognition system that was deployed in real-time on an Open Source Leg (OSL).
View Article and Find Full Text PDFPseudoaneurysms of lower limb of orthopaedic traumatological origin: a literature review and our experience of 18 cases.
Eur J Trauma Emerg Surg
December 2024
Department of Orthopaedics and Trauma, Ganga Medical Centre and Hospitals Pvt. Ltd, 313, Mettupalayam Road, Coimbatore, 641043, India.
Introduction And Aims: Arterial pseudoaneurysm is a rare yet potentially life-threatening complication that can arise as a late sequelae of penetrating injuries or orthopaedic procedures. We aim at sharing our institutional experience of managing 18 cases of lower limb arterial pseudoaneurysms in orthopaedic practice and to provide technical tips for emergency management of severe bleeding. A comprehensive literature review resulting from fractures and orthopaedic surgeries is also presented.
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