Additive technologies for complete recovery of joint function in revision endoprosthesis surgery (experimental trial)

Тихилов, Р. М.; Konev, V. A.; Shubnyakov, I. I.; Денисов, А. О.; Mikhailova, Polina; Билык, С. С.; Коваленко, А. Н.; Starchik, D. A.

doi:10.17116/hirurgia201905152

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…Hexagonal bipyramid was chosen for an elementary cell of the lattice endoprosthesis [7,10]. Such geometry allows containing a sufficient amount of bone material, which potentially can improve bone tissue growth [13,22,23]. During the usage of the implant, bending and compression is experienced.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, studies are being carried out all over the world to obtain various network structures using selective laser melting methods and their bio and mechanical properties. However, interest does not subside because of good usage potential in biomedicine [12][13][14][15]. Patient-based medicine became more widespread with the growth of technical abilities in computational mechanics and computed tomography scan quality [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Design and Optimization Lattice Endoprosthesis for Long Bones: Manufacturing and Clinical Experiment

Bolshakov

Raginov

Egorov³

et al. 2020

Materials

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The article is devoted to the construction of lattice endoprosthesis for a long bone. Clinically, the main idea is to design a construction with the ability to improve bone growth. The article presents the algorithm for such a design. The construction should be produced by additive manufacturing. Such an approach allows using not only metallic materials but also ceramics and polymers. The algorithm is based on the influence function as a method to describe the elementary cell geometry. The elementary cell can be described by a number of parameters. The influence function maps the parameters to local stress in construction. Changing the parameters influences the stress distribution in the endoprosthesis. In the paper, a bipyramid was used as an elementary cell. Numerical studies were performed using the finite element method. As a result, manufacturing construction is described. Some problems for different orientations of growth are given. The clinical test was done and histological results were presented.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Optimization Lattice Endoprosthesis for Long Bones: Manufacturing and Clinical Experiment

Bolshakov

Raginov

Egorov³

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…It has been shown [17][18][19] that implants interact with bone tissue and that the structure and the microstructure of the implant influence the quality of this interaction. Additive manufacturing allows the generation of solid irregular or lattice geometry [20,21], but on the other hand, local microporosity decreases fatigue resistance. Classical post-processing, such as tempering, allows the counteraction of the negative sides of the technology [22,23].…”

Section: Introductionmentioning

confidence: 99%

Structural Design Method for Constructions: Simulation, Manufacturing and Experiment

et al. 2021

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The development of additive manufacturing technology leads to new concepts for design implants and prostheses. The necessity of such approaches is fueled by patient-oriented medicine. Such a concept involves a new way of understanding material and includes complex structural geometry, lattice constructions, and metamaterials. This leads to new design concepts. In the article, the structural design method is presented. The general approach is based on the separation of the micro- and macro-mechanical parameters. For this purpose, the investigated region as a complex of the basic cells was considered. Each basic cell can be described by a parameters vector. An initializing vector was introduced to control the changes in the parameters vector. Changing the parameters vector according to the stress-strain state and the initializing vector leads to changes in the basic cells and consequently to changes in the microarchitecture. A medium with a spheroidal pore was considered as a basic cell. Porosity and ellipticity were used for the parameters vector. The initializing vector was initialized and depended on maximum von Mises stress. A sample was designed according to the proposed method. Then, solid and structurally designed samples were produced by additive manufacturing technology. The samples were scanned by computer tomography and then tested by structural loads. The results and analyses were presented.

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Treatment of Pelvic Ring Injury with 3D Printed Patient-Specific Implant: Case Report

Solod

Lazarev

Петровский

et al. 2020

Traumatology and Orthopedics of Russia

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Rationale. The development of 3D printing technology allows the manufacture of individual implants to treat the patients with diseases and consequences of musculoskeletal system injuries. However, the use of additive technologies in the patients with multiple trauma in the acute period is limited. The purpose of study was to demonstrate the possibility of using individual implants for the definitive fixation of the anterior pelvic ring in a patient with multiple trauma.Patient concerns. A 22-year-old patient was admitted after an injury as a result of a fall from the 5th floor. The treatment was carried out in accordance with the ATLS protocol. Diagnosis: multiple trauma; closed chest, pelvis and limbs injuries; fracture of the left 2nd to 5th ribs; pelvic bones fracture AO/ OTA: 61-C1.3a; fracture of both bones of the left lower leg AO/OTA: 42-B3b; 2nd degree shock.Interventions. An emergency external fixation of the pelvis and lower leg bones was performed. An individual implant for pubic bone fixation was made using 3D printing. On the 8th day, the definitive fixation of the pelvic and left lower leg bones was performed. The patient is activated on the 1st day after the surgery.Outcomes. The early postoperative period was uneventful. The functional result on the Majeed scale in 6 months by remote filling out the questionnaire was 84 points. Lessons. The custom-made implants make it possible the successful fixation of the anterior pelvic ring. The use of 3D printing technologies for the osteosynthesis of pelvic fractures is promising, although requires further study.

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Additive technologies for complete recovery of joint function in revision endoprosthesis surgery (experimental trial)

Cited by 3 publications

References 12 publications

Design and Optimization Lattice Endoprosthesis for Long Bones: Manufacturing and Clinical Experiment

Design and Optimization Lattice Endoprosthesis for Long Bones: Manufacturing and Clinical Experiment

Structural Design Method for Constructions: Simulation, Manufacturing and Experiment

Treatment of Pelvic Ring Injury with 3D Printed Patient-Specific Implant: Case Report

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