Custom-made lateral femoral hemiarthroplasty for traumatic bone loss: A case report

Stuyts, Bart; Peersman, Geert; Thienpont, Emmanuel; Eeden, Elke Van den; Bracht, Hans Van Der

doi:10.1016/j.knee.2015.06.008

Cited by 5 publications

(8 citation statements)

References 23 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The situation with a coexisting shaft fracture at a distal femoral epiphyseal defect has not been described in the literature to date. Therefore, it required an innovative approach and an individual technical solution to this problem [ 68 , 69 , 70 ]. These actions allowed us, first of all, to shorten the time of immobilization and earlier commencement of rehabilitation to faster recovery of the flexion and extension movement functions in the knee joint.…”

Section: Discussionmentioning

confidence: 99%

Manufacturing Polymer Model of Anatomical Structures with Increased Accuracy Using CAx and AM Systems for Planning Orthopedic Procedures

et al. 2022

View full text Add to dashboard Cite

Currently, medicine uses typical industrial structure techniques, including reverse engineering, data processing, 3D-CAD modeling, 3D printing, and coordinate measurement techniques. Taking this into account, one can notice the applications of procedures used in the aviation or automotive industries based on the structure of Industry 4.0 in the planning of operations and the production of medical models with high geometric accuracy. The procedure presented in the publication shortens the processing time of tomographic data and increases the reconstruction accuracy within the hip and knee joints. The procedure allows for the partial removal of metallic artifacts from the diagnostic image. Additionally, numerical models of anatomical structures, implants, and bone cement were developed in more detail by averaging the values of local segmentation thresholds. Before the model manufacturing process, additional tests of the PLA material were conducted in terms of its strength and thermal properties. Their goal was to select the appropriate type of PLA material for manufacturing models of anatomical structures. The numerical models were divided into parts before being manufactured using the Fused Filament Fabrication technique. The use of the modifier made it possible to change the density, type of filling, number of counters, and the type of supporting structure. These treatments allowed us to reduce costs and production time and increase the accuracy of the printout. The accuracy of the manufactured model geometry was verified using the MCA-II measuring arm with the MMDx100 laser head and surface roughness using a 3D Talyscan 150 profilometer. Using the procedure, a decrease in geometric deviations and amplitude parameters of the surface roughness were noticed. The models based on the presented approach allowed for detailed and meticulous treatment planning.

show abstract

Section: Discussionmentioning

confidence: 99%

Manufacturing Polymer Model of Anatomical Structures with Increased Accuracy Using CAx and AM Systems for Planning Orthopedic Procedures

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Given the unique anatomy of each patient's tumor, a customized endoprosthesis allows each implant to be tailored to a patient's predicted defect following resection. Promising outcomes have previously been reported with customized unicondylar reconstruction in patients with traumatic condylar destruction, 14,15 but a paucity of data exists regarding use following oncologic resection. This option provides benefits both in young, active patients with high levels of activity, who may require more extensive revision surgeries in the future, as well as older patients with significant comorbidities, by shortening hospital stays and time to recovery.…”

Section: Discussionmentioning

confidence: 99%

“…While two cases of custom unicondylar hemiarthroplasty following resection have been reported in patients with traumatic bone loss, the use of this type of implant in tumor patients has not been well described in the literature. 14,15 The purpose of this study is to report on the outcomes of three consecutive patients who underwent custom unicondylar hemiarthroplasty following resection of tumor at the distal femur.…”

mentioning

confidence: 99%

Reconstruction with Custom Unicondylar Hemiarthroplasty following Tumor Resection: A Case Series and Review of the Literature

et al. 2019

View full text Add to dashboard Cite

AbstractFor patients with tumors of the distal femur, options for limb salvage include tumor resection followed by reconstruction. While reconstruction commonly involves a distal femoral replacement, careful selection of patients with tumor involvement limited to a single condyle may be candidates for reconstruction with distal femur hemiarthroplasty. In these procedures, resection spares considerably more native anatomy. Three consecutive patients who underwent resection and reconstruction at the distal femur with custom unicondylar hemiarthroplasty are presented in this case series at a mean follow-up of 45 months (range, 26–78). In two cases, prostheses were utilized as a secondary procedure after failure of initial reconstruction. In one case, the custom prosthesis was utilized as the primary method of reconstruction. Mean Musculoskeletal Tumor Society disease-specific scores were 26.7 (range, 25–28). All patients achieved a return to full weight bearing, activities of daily living, and functional range of motion. In appropriately selected patients with tumors of the distal femur, reconstruction with custom unicondylar hemiarthroplasty provides benefits including optimal function postoperatively via preservation of tumor-free bone and ligamentous structures. Additionally, maintenance of greater bone stock may confer benefits to patients with pathology at a high likelihood for recurrence and need for subsequent procedures.

show abstract

“…Great examples are metal and polymer scaffolds of complex structure, containing the patient’s own stem cells seeded inside the implant together with bioactive agents [ 1 , 2 , 3 , 4 , 5 ]. Other examples are implants and prostheses, customized to individual patient anatomy and physiology, often designed on the basis of precise topographic data obtained by means of computed tomography (CT) scans [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Ti6Al7Nb Alloy for the Manufacture of Biomechanical Functional Structures (BFS) for Custom-Made Bone Implants

et al. 2018

View full text Add to dashboard Cite

Unlike conventional manufacturing techniques, additive manufacturing (AM) can form objects of complex shape and geometry in an almost unrestricted manner. AM’s advantages include higher control of local process parameters and a possibility to use two or more various materials during manufacture. In this work, we applied one of AM technologies, selective laser melting, using Ti6Al7Nb alloy to produce biomedical functional structures (BFS) in the form of bone implants. Five types of BFS structures (A1, A2, A3, B, C) were manufactured for the research. The aim of this study was to investigate such technological aspects as architecture, manufacturing methods, process parameters, surface modification, and to compare them with such functional properties such as accuracy, mechanical, and biological in manufactured implants. Initial in vitro studies were performed using osteoblast cell line hFOB 1.19 (ATCC CRL-11372) (American Type Culture Collection). The results of the presented study confirm high applicative potential of AM to produce bone implants of high accuracy and geometric complexity, displaying desired mechanical properties. The experimental tests, as well as geometrical accuracy analysis, showed that the square shaped (A3) BFS structures were characterized by the lowest deviation range and smallestanisotropy of mechanical properties. Moreover, cell culture experiments performed in this study proved that the designed and obtained implant’s internal porosity (A3) enhances the growth of bone cells (osteoblasts) and can obtain predesigned biomechanical characteristics comparable to those of the bone tissue.

show abstract

Custom-made lateral femoral hemiarthroplasty for traumatic bone loss: A case report

Cited by 5 publications

References 23 publications

Manufacturing Polymer Model of Anatomical Structures with Increased Accuracy Using CAx and AM Systems for Planning Orthopedic Procedures

Manufacturing Polymer Model of Anatomical Structures with Increased Accuracy Using CAx and AM Systems for Planning Orthopedic Procedures

Reconstruction with Custom Unicondylar Hemiarthroplasty following Tumor Resection: A Case Series and Review of the Literature

Application of Ti6Al7Nb Alloy for the Manufacture of Biomechanical Functional Structures (BFS) for Custom-Made Bone Implants

Contact Info

Product

Resources

About