Transtibial (TT) amputations, or below-knee amputations, are among the most frequently performed major limb removals. To replace the missing limb, numerous prosthetic devices were developed. A study of the state-of-the-art in TT prostheses shows that none of the commercially available devices are capable of mimicking an able-bodied ankle-foot complex. Still on a research level, some powered prosthetic devices have the potential to improve amputee walking experience, but still need heavy and bulky actuators to provide the necessary power of propulsion. With the AMP-Foot 2.0, the authors propose a new concept for an energy efficient, powered transtibial prosthesis. Its design enables the use of a low power actuator which stores energy in springs during the complete stance phase that can be released at push-off. Thanks to this, the size and weight of the actuator can be decreased considerably while the ankle still provides the full power necessary for forward propulsion. A prototype of the AMP-Foot 2.0 has been built and experiments with a transfemural amputee were conducted. The captured data is presented and analyzed throughout this paper.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1109/TNSRE.2013.2282416 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
In vitro evaluation of antimicrobial photodynamic therapy with photosensitizers and calcium hydroxide on bond strength, chemical composition, and sealing of glass-fiber posts to root dentin.
Lasers Med Sci
January 2025
Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
Investigate the impact of antimicrobial photodynamic therapy (aPDT) using different photosensitizers (PSs) such as indocyanine green (IG), curcumin (CC), and methylene blue (MB), with or without intracanal application of calcium hydroxide (CH), on the push-out bond strength of glass-fiber posts (GFPs) to intraradicular dentin, the chemical composition of the root substrate, and the sealing of the adhesive interface across different thirds of intraradicular dentin. A total of 112 bovine teeth underwent biomechanical preparation and were divided into eight experimental groups (n = 14 each): Negative control with deionized water; positive control with deionized water + CH; IG group with indocyanine green and infrared laser; IG + CH group; CC group with curcumin and blue LED; CC + CH group; MB group with methylene blue and red laser; and MB + CH group. The push-out bond strength was measured using a universal testing machine (n = 8), and scanning electron microscopy characterized the fracture patterns.
View Article and Find Full Text PDFBiomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures.
Acta Orthop Traumatol Turc
December 2024
Department of Orthopaedics and Traumatology, Izmir Katip Celebi University, Ataturk Training and Research Hospital, Izmir, Türkiye.
Objective: The aim of this study was to evaluate whether the locking femoral neck plate (LFNP) can be an alternative fixation method to the cannulated screws with a medial buttress plate. For this purpose, we compared biomechanically the LFNP and cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures.
Methods: A vertical fracture model was created at an 80-degree angle to the femoral neck in 28 synthetic bone models.
Arthroscopic-assisted total wrist arthrodesis: surgical design and clinical outcomes.
J Plast Surg Hand Surg
January 2025
Department of Hand Surgery, Huashan Hospital Fudan University Shanghai, China; Department of Hand and Upper Extremity Surgery, Shanghai Jing'an District Central Hospital, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; NHC Key Laboratory of Hand Reconstruction, Fudan University, Shanghai, China.
Introduction: This study presents an innovative arthroscopy-assisted total wrist arthrodesis technique utilising three hollow screws, aimed at improving clinical outcomes for patients with severe wrist arthritis.
Materials And Methods: The technique involved the placement of three hollow screws to facilitate wrist bone fusion. Between August 2019 and August 2023, four patients diagnosed with severe wrist arthritis underwent the arthroscopy-assisted procedure.
Interrupted versus uninterrupted anticoagulation for cardiac rhythm management device insertion.
Cochrane Database Syst Rev
January 2025
Department of Pharmacy Practice, University of Connecticut, Storrs, CT 06269, USA.
Background: Guideline-recommended strategies to interrupt chronic anticoagulation with warfarin or direct oral anticoagulants (DOAC) during the perioperative period of cardiac implantable electronic device (CIED) surgery differ worldwide. There is uncertainty concerning the benefits and harms of interrupted and uninterrupted anticoagulation in patients undergoing CIED surgery.
Objectives: To assess the benefits and harms of interrupted anticoagulation (IAC) with either warfarin or DOAC in the perioperative period of CIED surgery versus uninterrupted anticoagulation (UAC), with or without heparin bridging, during an equivalent time frame, for CIED surgery.
Comparative Study between Two Adjacent Implants Supported Crowns and One Implant Supported Cantilever Fixed Dental Prosthesis: An Study.
J Contemp Dent Pract
October 2024
Department of Crown and Bridge, Faculty of Dentistry, Al-Azhar University, Cairo, Egypt.
Aim: To assess hard as well as soft peri-implant tissues within cases having two lost adjacent anterior teeth treated through placing either two implants with two separate crowns or only an implant along with a crown with a cantilever, and evaluating the effect of polyetheretherketone (PEEK) restoration on cantilever design up to 18 months after functional loading.
Materials And Methods: Twenty-seven participants (15 males and 12 females; mean age, 38.6 years; range 20-50 years) with missing two adjacent anterior teeth were treated with implant system (Flotecno implant system, Italy).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!