A new technology using a customized 3D printed fixator to assist fracture reduction and fixation: Technical note

2021 ◽  
Author(s):  
Jianghong Wu ◽  
Panyu Zhou ◽  
Yuntong Zhang ◽  
Liang Xiao ◽  
Lei Li ◽  
...  
Keyword(s):  
New Technology ◽  
Technical Note ◽  
Fracture Reduction ◽  
Fracture Reduction And Fixation ◽  
3D Printed

One-step reconstruction with a 3D-printed, custom-made prosthesis after total en bloc sacrectomy: a technical note

2016 ◽  
Vol 26 (7) ◽  
pp. 1902-1909 ◽  
Author(s):  
Ran Wei ◽  
Wei Guo ◽  
Tao Ji ◽  
Yidan Zhang ◽  
Haijie Liang
Keyword(s):  
Technical Note ◽  
En Bloc ◽  
Custom Made ◽  
One Step ◽  
3D Printed

Orthopaedic surgery

2021 ◽  
pp. 597-698
Keyword(s):  
Fracture Healing ◽  
Bone Healing ◽  
Orthopaedic Surgery ◽  
Fracture Reduction ◽  
Fracture Reduction And Fixation ◽  
Reduction Techniques ◽  
Careful Handling ◽  
Tunnel Syndrome ◽  
Primary Bone ◽  
Secondary Bone Healing

This chapter examines orthopaedic surgery. It begins by detailing the examination of a joint and of the limbs and trunk. The chapter then discusses fracture healing and the reduction and fixation of fractures. Fracture healing occurs as either primary or secondary bone union. Primary bone healing does not produce callus, while secondary bone healing does. Modern fracture reduction and treatment centres around four key principles: fracture reduction and fixation to restore anatomical relationships; stability by fixation or splintage as the personality of the fracture and the injury dictates; preservation of the blood supply to the soft tissue and bone by careful handling and gentle reduction techniques; and early and safe mobilization of the part and patient. Finally, the chapter looks at the skeletal radiograph and considers injuries of the phalanges and metacarpals; wrist injuries; dislocations and fractures of the elbow, shoulders, ribs, pelvis, and neck; spinal injuries; bone tumours; osteoarthrosis (osteoarthritis); Paget’s disease (osteitis deformans); and carpal tunnel syndrome.

Application of a customized 3D printed reduction aid after external fixation of the femur and tibia: Technical note

2017 ◽  
Vol 13 (4) ◽  
pp. e1803 ◽  
Author(s):  
Mohamed Omar ◽  
Alexander-Nicolai Zeller ◽  
Nils-Claudius Gellrich ◽  
Majeed Rana ◽  
Christian Krettek ◽  
...  
Keyword(s):  
External Fixation ◽  
Technical Note ◽  
3D Printed

The use of an Ossis custom 3D-printed tri-flanged acetabular implant for major bone loss: minimum 2-year follow-up

2018 ◽  
Vol 28 (6) ◽  
pp. 668-674 ◽  
Author(s):  
David C Kieser ◽  
Ramez Ailabouni ◽  
Sandra C J Kieser ◽  
Michael C Wyatt ◽  
Paul C Armour ◽  
...  
Keyword(s):  
New Technology ◽  
Deep Infection ◽  
Harris Hip Score ◽  
Patient Specific ◽  
Outcome Analysis ◽  
Bone Contact ◽  
Functional Scores ◽  
3D Printed ◽  
Acetabular Implant

Introduction: Custom 3D-printed acetabular implants are a new technology used in hip surgery with ever-increasing frequency. They offer patient-specific implants to optimise filling of bone defects and implant-bone contact, without the need for excessive bone resection. Methods: This is a retrospective cohort study of 46 consecutive patients who underwent an Ossis unilateral custom 3D-printed acetabular implant. Clinical (Oxford Hip Score OHS-60), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Harris Hip Score (HHS) and radiological (restoration of biomechanical hip centre, osteointegration, wear, heterotrophic ossification) results were assessed. Results: Patient mean age was 68 years and follow-up was 38 months (minimum 24 months). 10 patients were excluded from the outcome analysis; 2 patients died, 1 required revision for deep infection and 7 were lost to follow-up. Of the 36 patients included, 21 had severe osteolysis. 7 were revised for infection, 3 for tumoural defects, 3 for metallosis, 1 for dysplasia and 1 for trauma (Paprosky 2a [n=6], 2b [n=2], 2c [n=5], 3a [n=6], 3b [n=11], pelvic dissociation [n=6]). OHS significantly improved postoperatively (16-8-48.4 p=0.027). Postoperative functional scores were good (WOMAC 98; HHS 79). The biomechanical hip centre was restored in all patients. 1 patient had early implant migration with subsequent stabilisation. 2 patients had radiographs concerning for failure of osteointegration. 1 patient had recurrent dislocations. Conclusions: The mid-term results of the Ossis custom 3D-printed tri-flanged acetabular implant for the management of severe acetabular defects are encouraging. The improvement in functional scores and radiographic outcomes are comparable to similar designs. In addition, no cases have required revision for aseptic loosening.

scholarly journals Technical Note: Development of a 3D printed subresolution sandwich phantom for validation of brain SPECT analysis

2016 ◽  
Vol 43 (9) ◽  
pp. 5020-5027 ◽  
Author(s):  
Ian S. Negus ◽  
Robin B. Holmes ◽  
Kirsty C. Jordan ◽  
David A. Nash ◽  
Gareth C. Thorne ◽  
...  
Keyword(s):  
Technical Note ◽  
Brain Spect ◽  
3D Printed

scholarly journals The use of custom 3D printed stereotactic frames for laser interstitial thermal ablation: technical note

2016 ◽  
Vol 41 (4) ◽  
pp. E3 ◽  
Author(s):  
Nicholas J. Brandmeir ◽  
James McInerney ◽  
Brad E. Zacharia
Keyword(s):  
Brain Biopsy ◽  
Technical Note ◽  
Specific System ◽  
First Report ◽  
Wide Acceptance ◽  
Stereotactic Frame ◽  
3D Printed ◽  
Stereotactic Method ◽  
Interstitial Thermotherapy ◽  
Room Time

Over the last several years, laser interstitial thermotherapy (LITT) has gained wide acceptance for the treatment of a myriad of cranial lesions. A wide variety of techniques for placement of the laser fiber have been reported with a spectrum of perceived benefits and drawbacks. The authors present the first report of a customized 3D printed stereotactic frame for LITT. Approximately 1 week prior to surgery, 3–4 skull fiducials were placed after each of 5 patients received a local anesthetic as an outpatient. Radiographs with these fiducials were then used to create a trajectory to the lesion that would be treated with LITT. After the plan was completed, software was used to render a customized frame. On the day of surgery, the frame was attached to the implanted skull fiducials and the LITT catheter was placed. This procedure was carried out in 5 consecutive patients. In 2 patients, a needle biopsy was also performed. Intraoperative and postoperative imaging studies confirmed the accurate placement of the LITT catheter and the lesion created. Mean operating room time for all patients was 45 minutes but only 26 minutes when excluding the cases in which a biopsy was performed. To the best of the authors' knowledge, this is the first report of the use of a specific system, the STarFix microTargeting system, for use with LITT and brain biopsy. This system offers several advantages including fast operating times, extensive preoperative planning, no need for cranial fixation, and no need for frame or fiducial placement on the day of surgery. The accuracy of the system combined with these advantages may make this a preferred stereotactic method for LITT, especially in centers where LITT is performed in a diagnostic MRI suite.

scholarly journals Corrosion Testing of Additively Manufactured Metals and Biomedical Devices

2018 ◽  
Vol 1 (2) ◽  
pp. 81-84
Author(s):  
Dávid Miklós Kemény ◽  
Dóra Károly
Keyword(s):  
Additive Manufacturing ◽  
Human Life ◽  
New Technology ◽  
Chromium Alloy ◽  
Direct Metal Laser Sintering ◽  
Cobalt Chromium ◽  
Corrosion Properties ◽  
3D Printed ◽  
Biomedical Industry ◽  
Short Time

Abstract Additive manufacturing (AM) is becoming increasingly important, making it possible to produce a product in a short time, to specific individual requirements, and even in the presence of the customer. This research is related to direct metal laser sintering of additive manufacturing. This new technology is increasingly being used in more sectors, for example in biomedical industry, where a damaged product can potentially endanger human life. Corrosion tests were carried out during our research. Cyclic voltammetry curves and corrosion rates were determined with a potentiostat. Two typical biocompatible implant materials were compared, a cobalt chromium alloy (powder metallurgy) and a titanium alloy (3D printed). The results will help in specifying the corrosion properties of additively manufactured materials.

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