Clinical, Biomechanical and Biomaterials Approach in the Case of Fracture Repair Using Different Systems Type Plate-Screw

Abstract

Many researchers perform different research in the area of ostheosznthesis metallic implants used in orthopedic surgery. The main goal of internal fixation is to achieve full operation until patient recovery. Although implants are intended to withstand until bone consolidation in some cases problems occur due to accelerate wear and corrosion processes. The aim of the present study was to determine the causes leading to adverse reactions of the surrounding tissues in case of three implants for osteosynthesis type plate-screw.

Fluoride Treatment and In Vitro Corrosion Behavior of Mg-Nd-Y-Zn-Zr Alloys Type

“…In order to manufacture a high-quality implant, the biocompatibility of the material and the matching of mechanical properties to bone must be taken into account. The main side effect of the metallic implants consist of metal ion emission due to corrosion phenomenon and inflammation at the implant site, or dangerous tissue reaction as cell apoptosis or necrosis can occur [1][2][3][4][5]. Another important limitation of the classical metallic implants for orthopedic surgery is the so-called "stress shielding" phenomenon, which is due to the metal high value of Young's modulus in comparison with that of human bone.…”

“…In order address these aspects, the researchers were focused, at the beginning, to the solutions such as different biocompatible coatings applied on the metallic materials surface [3][4][5][6][9][10][11] or to create different composite materials for orthopedic applications [7,8]. However, a new paradigm that appears in the last decade looks to be more suitable to solve some problems of the classic metallic implants used in orthopedic surgery.…”

Controlling the Degradation Rate of Biodegradable Mg–Zn-Mn Alloys for Orthopedic Applications by Electrophoretic Deposition of Hydroxyapatite Coating

“…The coating of implants aims to improve their corrosion resistance and to maintain the mechanical strength. However, the degradation rate must not be overlooked since a too rapid degradation of implants can have a potential risk of inflammation due to excessive hydrogen production and loss of mechanical integrity of implant prior to healing [12,13]. Therefore, in order to be an effective biodegradable implant for orthopaedic applications, the degradation rate of Mg alloys should be sufficient for the healing process and new tissue growth to take place, in order to provide a natural support before the structural integrity of the implant weakens [14][15][16][17].…”

Short Term Behaviour of Fixed-Loop Cortical Suspension System Used for Surgical Treatment of <i>Hallux valgus</i>

“…An important issue are the design of the orthopedic implants because are used different processing techniques of the metallic biomaterials in order to obtain various types of orthopedic implants like screws, plates, wires, pins, that could affect the metallic materials microstructure, mechanical properties and implant surface [16,18,19]. The processing techniques of metallic biomaterials and the excesive biomechanical loading are the main causes for metallic implant failure, as is mentioned in various studies [20][21][22][23]. Even various studies describe now the potential of biodegradable metals and metallic glass for orthopedic implants, we consider that the classical metallic biomaterials like titatinium and his alloys are still the best option available for trauma implants [24][25][26][27][28][29].…”