The Experts below are selected from a list of 18384 Experts worldwide ranked by ideXlab platform

Hiroshi Tsumura - One of the best experts on this subject based on the ideXlab platform.

  • Mechanical evaluation of hip cement spacer reinforcement with stainless steel Kirschner wires, titanium and carbon rods, and stainless steel mesh
    European Journal of Orthopaedic Surgery & Traumatology, 2015
    Co-Authors: Nobuhiro Kaku, Tomonori Tabata, Hiroshi Tsumura
    Abstract:

    Introduction In two-stage treatments for infections after total hip arthroplasty, antibiotic-loaded cement spacers help treat the infection by antibiotic elution and prevent contraction. However, such spacers are weak and may fracture while awaiting replacement, impairing functionality. We evaluated whether a Kirschner wire (K-wire) mounted into the spacer reinforced its strength along with the effects of the Reinforcing material, position, and intensity. Methods Spacers without Reinforcing Materials constituted the control group. As Reinforcing Materials, stainless steel K-wires (diameters 3 and 6 mm), titanium alloy and carbon fibers (diameter 3.175 mm), and stainless steel meshes (inner and outer diameters, 6 and 9 mm, respectively) were inserted into the spacer mold before filling with cement. The spacers complied with ISO 7206-4; a compressive load was applied using a testing machine with a velocity of 25.4 mm/min, and the maximum load was recorded. We used 1–3 K-wires positioned on the medial side, lateral side, neck only, and stem only and tested 3 specimens for each condition. Results The control group withstood the highest load. Stainless steel was the strongest material; 3-mm K-wires in the neck and lateral side withstood a higher load. The computed tomography (CT) imaging revealed a cavity between the K-wires and cement. When K-wires were inserted along the whole length, despite cement fractures, continuity was maintained because of the Reinforcing Materials. Conclusion It is difficult to improve the Reinforcing strength of spacers using K-wires; however, K-wires prevented dislocation of cement spacer fragments, which can help prevent contraction and facilitate spacer removal during replacement.

Nobuhiro Kaku - One of the best experts on this subject based on the ideXlab platform.

  • Mechanical evaluation of hip cement spacer reinforcement with stainless steel Kirschner wires, titanium and carbon rods, and stainless steel mesh
    European Journal of Orthopaedic Surgery & Traumatology, 2015
    Co-Authors: Nobuhiro Kaku, Tomonori Tabata, Hiroshi Tsumura
    Abstract:

    Introduction In two-stage treatments for infections after total hip arthroplasty, antibiotic-loaded cement spacers help treat the infection by antibiotic elution and prevent contraction. However, such spacers are weak and may fracture while awaiting replacement, impairing functionality. We evaluated whether a Kirschner wire (K-wire) mounted into the spacer reinforced its strength along with the effects of the Reinforcing material, position, and intensity. Methods Spacers without Reinforcing Materials constituted the control group. As Reinforcing Materials, stainless steel K-wires (diameters 3 and 6 mm), titanium alloy and carbon fibers (diameter 3.175 mm), and stainless steel meshes (inner and outer diameters, 6 and 9 mm, respectively) were inserted into the spacer mold before filling with cement. The spacers complied with ISO 7206-4; a compressive load was applied using a testing machine with a velocity of 25.4 mm/min, and the maximum load was recorded. We used 1–3 K-wires positioned on the medial side, lateral side, neck only, and stem only and tested 3 specimens for each condition. Results The control group withstood the highest load. Stainless steel was the strongest material; 3-mm K-wires in the neck and lateral side withstood a higher load. The computed tomography (CT) imaging revealed a cavity between the K-wires and cement. When K-wires were inserted along the whole length, despite cement fractures, continuity was maintained because of the Reinforcing Materials. Conclusion It is difficult to improve the Reinforcing strength of spacers using K-wires; however, K-wires prevented dislocation of cement spacer fragments, which can help prevent contraction and facilitate spacer removal during replacement.

Tomonori Tabata - One of the best experts on this subject based on the ideXlab platform.

  • Mechanical evaluation of hip cement spacer reinforcement with stainless steel Kirschner wires, titanium and carbon rods, and stainless steel mesh
    European Journal of Orthopaedic Surgery & Traumatology, 2015
    Co-Authors: Nobuhiro Kaku, Tomonori Tabata, Hiroshi Tsumura
    Abstract:

    Introduction In two-stage treatments for infections after total hip arthroplasty, antibiotic-loaded cement spacers help treat the infection by antibiotic elution and prevent contraction. However, such spacers are weak and may fracture while awaiting replacement, impairing functionality. We evaluated whether a Kirschner wire (K-wire) mounted into the spacer reinforced its strength along with the effects of the Reinforcing material, position, and intensity. Methods Spacers without Reinforcing Materials constituted the control group. As Reinforcing Materials, stainless steel K-wires (diameters 3 and 6 mm), titanium alloy and carbon fibers (diameter 3.175 mm), and stainless steel meshes (inner and outer diameters, 6 and 9 mm, respectively) were inserted into the spacer mold before filling with cement. The spacers complied with ISO 7206-4; a compressive load was applied using a testing machine with a velocity of 25.4 mm/min, and the maximum load was recorded. We used 1–3 K-wires positioned on the medial side, lateral side, neck only, and stem only and tested 3 specimens for each condition. Results The control group withstood the highest load. Stainless steel was the strongest material; 3-mm K-wires in the neck and lateral side withstood a higher load. The computed tomography (CT) imaging revealed a cavity between the K-wires and cement. When K-wires were inserted along the whole length, despite cement fractures, continuity was maintained because of the Reinforcing Materials. Conclusion It is difficult to improve the Reinforcing strength of spacers using K-wires; however, K-wires prevented dislocation of cement spacer fragments, which can help prevent contraction and facilitate spacer removal during replacement.

Adriaan S. Luyt - One of the best experts on this subject based on the ideXlab platform.

  • adhesion strength study between plasma treated polyester fibres and a rubber matrix
    Applied Surface Science, 2005
    Co-Authors: H Krump, M Simor, Matej Jaššo, I. Hudec, Adriaan S. Luyt
    Abstract:

    In this work, the adhesion strength between poly(ethylene terephthalate) (PET) fibres and styrene-butadiene rubber (SBR) was studied. The effects of atmospheric plasma treatment, used to increase adhesion strength between PET fibres and the rubber matrix, were investigated and compared. It was confirmed that lubricants on the fibres caused a decrease in adhesion strength between the plasma treated Reinforcing PET fibres and the SBR rubber matrix. These lubricants can be removed by acetone. When washed and treated in plasma, a substantial improvement in adhesion strength was observed. No ageing in air before combination with the rubber matrix was observed. This confirmed that the plasma streamers caused the creation of a new, relatively stable chemical species on the polymer surface. It suggests that the surface modification of PET fibres by plasma treatment at atmospheric gas pressure is a suitable and technologically applicable method for the improvement of adhesion strength of polyester Reinforcing Materials to rubber.

H Krump - One of the best experts on this subject based on the ideXlab platform.

  • adhesion strength study between plasma treated polyester fibres and a rubber matrix
    Applied Surface Science, 2005
    Co-Authors: H Krump, M Simor, Matej Jaššo, I. Hudec, Adriaan S. Luyt
    Abstract:

    In this work, the adhesion strength between poly(ethylene terephthalate) (PET) fibres and styrene-butadiene rubber (SBR) was studied. The effects of atmospheric plasma treatment, used to increase adhesion strength between PET fibres and the rubber matrix, were investigated and compared. It was confirmed that lubricants on the fibres caused a decrease in adhesion strength between the plasma treated Reinforcing PET fibres and the SBR rubber matrix. These lubricants can be removed by acetone. When washed and treated in plasma, a substantial improvement in adhesion strength was observed. No ageing in air before combination with the rubber matrix was observed. This confirmed that the plasma streamers caused the creation of a new, relatively stable chemical species on the polymer surface. It suggests that the surface modification of PET fibres by plasma treatment at atmospheric gas pressure is a suitable and technologically applicable method for the improvement of adhesion strength of polyester Reinforcing Materials to rubber.