Results 61 to 70 of about 36,586 (235)

Investigation of dynamic hip plate screw systems in different lengths with finite element analysis

Heliyon
Objectives Dynamic systems aim to create an environment that encourages bone healing while minimizing stress shielding, which is a phenomenon where the bone loses density due to a lack of stress during the healing process.
J. Azarabadi
semanticscholar   +1 more source

Femoral neck system versus dynamic hip screw for fixation of femoral neck fracture in the adult: a meta-analysis.

JPMA. The Journal of the Pakistan Medical Association
Objective To determine the efficacy of femoral neck system compared to dynamic hip screws in treating femoral neck fractures. METHODS The systematic review was conducted from January to March 2023, and comprised literature search on PubMed, Embase ...
Qilong Jiang, Yong Cao, Xinwen Bai, Yuxin Deng, Yan Li   +4 more
semanticscholar   +1 more source

Lattice Structures for Bone Replacement: The Intersection of Bone Biomechanics, Lattice Design, and Additive Manufacturing

Advanced Materials Technologies, EarlyView.
This review outlines how understanding bone's biology, hierarchical architecture, and mechanical anisotropy informs the design of lattice structures that replicate bone morphology and mechanical behavior. Additive manufacturing enables the fabrication of orthopedic implants that incorporate such structures using a range of engineering materials ...
Stylianos Kechagias, Maxwell J. Munford, Frederik C.H. Masure, Richard J. van Arkel, Reece N Oosterbeek   +4 more
wiley   +1 more source

Unilateral Ankle‐Foot Exoneuromusculoskeleton with Balance‐Sensing Feedback for Self‐Help Telerehabilitation after Stroke

Advanced Robotics Research, EarlyView.
This study introduces a hybrid robot that integrates mechanical assistance by musculoskeletons (i.e., soft pneumatic muscle with rigid exoskeletal extensions), neuromuscular electrical stimulation, and vibrotactile feedback in a lightweight wearable mechatronic complex applicable to the paretic ankle–foot poststroke for gait restoration. The system can
Fuqiang Ye, Wei Rong, Waiming Li, Kwok‐Ting Wong, Man‐Kit Pang, Hon‐Wah Wai, Lilly Li, Zicong Hong, Song Guo, Zong‐Hao Ma, Yongping Zheng, Ming Zhang, Nicholas Chow, Jianing Zhang, Xiaoling Hu, Fei Chen, Waisang Poon   +16 more
wiley   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Dynamic hip system blade versus cannulated compression screw for the treatment of femoral neck fractures: A retrospective study

Acta Orthopaedica et Traumatologica Turcica, 2017
Objective: The aim of this study was to compare clinical outcomes of patients with femoral neck fractures treated with the dynamic hip system blade (DHS-BLADE) or cannulated compression screws.
Chao Chen, Li Yu, Xin Tang, Mo-zhen Liu, Li-zhong Sun, Changjian Liu, Zhen Zhang, Chang-zhou Li   +7 more
doaj   +1 more source

Design and biomechanical study of slide-poking external fixator for hip fracture

Journal of International Medical Research, 2020
Background Femoral head collapse and coxa vara lead to internal fixator failure in elderly patients with hip fracture. External fixator application is an optimal choice; however, the existing methods have many disadvantages.
Hua-Biao Chen, Hong-Bo Wu, Min Chen, Yu-Liang Huang   +3 more
doaj   +1 more source

Femoral Neck Fracture Treated with Dynamic Hip Screw System with De-rotation Screw Versus Cannulated Hip Screws

Journal of Chittagong Medical College Teachers' Association, 2022
Background: Fracture neck of femur has always presented a great challenge to orthopedic surgeons due to its nature of going into non-union and osteonecrosis of femoral head even with the best fixation method and adequate reduction. Treatment of fracture neck of femur varies according to patient’s age and fracture pattern.
Shantonu Kumar Saha, Hasina Momotaj Hira, Jabed Jahangir, Ajoy Deb, Mamun Mustafa, S Ripon Kumar Ghosh   +5 more
openaire   +1 more source

3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications

Advanced Robotics Research, EarlyView.
Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun, Jan Petrš, Omar Aloui, Dario Floreano   +3 more
wiley   +1 more source

Addressing Oxygen Embrittlement in Additively Manufactured Titanium via Cu‐Mediated Interstitial Site Engineering

Advanced Science, EarlyView.
A novel “Cu‐mediated interstitial site engineering” strategy is introduced to thermodynamically stabilize hexagonal oxygen (hex‐O) configurations in oxygen‐containing titanium alloys. The hex‐O configuration activates multiple slip systems and enhances dislocation pinning via long‐range repulsion.
Xiaobin Lin, Xudong Rong, Jiachen Xie, Xinru Wang, Jianteng Wang, Zhihang Xu, Dongdong Zhao, Shiwei Pan, Feng Qian, Longlong Ma, Gang Sha, Xiang Zhang, Chunsheng Shi, Chunnian He, Naiqin Zhao   +14 more
wiley   +1 more source