scholarly journals 3D Printed Acetabular Components for Complex Revision Arthroplasty

2021 ◽  
Author(s):  
Angela Yao ◽  
Daniel Mark George ◽  
Vijai Ranawat ◽  
Chris John Wilson
Keyword(s):  
Revision Arthroplasty ◽  
3D Printed ◽  
Acetabular Components

scholarly journals 3D Printed Acetabular Cups for Total Hip Arthroplasty: A Review Article

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 729 ◽  
Author(s):  
Dall’Ava ◽  
Hothi ◽  
Di Laura ◽  
Henckel ◽  
Hart
Keyword(s):  
3D Printing ◽  
Total Hip Arthroplasty ◽  
Clinical Outcomes ◽  
Hip Arthroplasty ◽  
Three Dimensional ◽  
Total Hip ◽  
3D Printed ◽  
Key Variables ◽  
End Use ◽  
Acetabular Components

Three-dimensional (3D) printed titanium orthopaedic implants have recently revolutionized the treatment of massive bone defects in the pelvis, and we are on the verge of a change from conventional to 3D printed manufacture for the mass production of millions of off-the-shelf (non-personalized) implants. The process of 3D printing has many adjustable variables, which taken together with the possible variation in designs that can be printed, has created even more possible variables in the final product that must be understood if we are to predict the performance and safety of 3D printed implants. We critically reviewed the clinical use of 3D printing in orthopaedics, focusing on cementless acetabular components used in total hip arthroplasty. We defined the clinical and engineering rationale of 3D printed acetabular cups, summarized the key variables involved in the manufacturing process that influence the properties of the final parts, together with the main limitations of this technology, and created a classification according to end-use application to help explain the controversial and topical issues. Whilst early clinical outcomes related to 3D printed cups have been promising, in-depth robust investigations are needed, partly because regulatory approval systems have not fully adapted to the change in technology. Analysis of both pristine and retrieved cups, together with long-term clinical outcomes, will help the transition to 3D printing to be managed safely.

Preliminary results of a 3D-printed acetabular component in the management of extensive defects

2017 ◽  
Vol 28 (3) ◽  
pp. 266-271 ◽  
Author(s):  
Mustafa Citak ◽  
Lilly Kochsiek ◽  
Thorsten Gehrke ◽  
Carl Haasper ◽  
Eduardo M Suero ◽  
...  
Keyword(s):  
Bone Loss ◽  
Acetabular Component ◽  
Complication Rate ◽  
Primary Outcome Measure ◽  
Patient Specific ◽  
Component Technique ◽  
Revision Tha ◽  
3D Printed ◽  
Acetabular Defects ◽  
Acetabular Components

Introduction: The treatment of extensive bone loss and massive acetabular defects can be compounded by several challenges and pitfalls. The survivorship following acetabular revision with extensive bone loss is still unsatisfactory. The goal of the present study was to analyse the outcomes of 3D-printed patient-specific acetabular components in the management of extensive acetabular defects and combined pelvic discontinuity (PD). Methods: 9 patients underwent revision THA using 3D-printed custom acetabular components to reconstruct extensive acetabular defects. The Paprosky classifications were determined in all patients. The primary outcome measure was the implant-associated failure rate. Results: 1 out of 9 patients suffered an implant-associated complication (11%). The overall implant-associated survival rate was 89%. The overall complication rate was 56%. Conclusions: The patient-specific acetabular component technique shows promise for the treatment of patients with severe acetabular defects in revision THA. Further research aimed at reducing costs and improving the complication rate are warranted.

How do 3D-printed primary uncemented acetabular components compare with established uncemented acetabular cups? The experience of the New Zealand National Joint Registry

2020 ◽  
pp. 112070002091823
Author(s):  
Michael C Wyatt ◽  
David C Kieser ◽  
Chris M A Frampton ◽  
Tim Woodfield ◽  
Gary J Hooper
Keyword(s):  
New Technology ◽  
Clinical Results ◽  
Deep Infection ◽  
Control Group ◽  
Infection Rates ◽  
Joint Registry ◽  
Kaplan Meier ◽  
3D Printed ◽  
Acetabular Components ◽  
Individual Implant

Background: 3D-printed or additive manufactured acetabular implants are an exciting new technology being used in hip surgery with increasing frequency especially in complex acetabular reconstructions. However, the performance of acetabular components produced by this method for primary THR is unknown. Methods: 41,272 uncemented cups in primary THR for OA were identified in the NZJR for the purposed of this study. There were 39,080 uncemented cups in the control group (15,798 Pinnacle cups, 12,724 Trident cups and 10,558 RM Pressfit cups) compared to 2192 3D-printed uncemented implants (1397 Delta TT cups, 640 Ti Por and 155 Polymax cups). All-cause revision rates and reasons for revision were examined. Kaplan-Meier survival analysis was performed. Results: 3D-printed cups were inserted into younger, fitter patients with a higher mean BMI compared to those in the control group ( p < 0.001). The overall all-cause revision rate for 3D-printed cups was not significantly different to the controls: 0.77/100 cys (95% CI 0.59–1) compared to 0.55/100 cys (95% CI 0.52–0.58) in the control group ( p = 0.058, Hazards ratio 1.29, 95% CI 0.992–1.678). There was no difference in aseptic cup loosening or deep infection rates between either group or indeed individual implant designs. Conclusions: 3D-printed uncemented cups provide reliable survivorship and clinical results in primary THR comparable to established designs manufactured by traditional means. The theoretical concerns of increased rates of fatigue failure or deep infection are unsubstantiated.

Bipolar revision arthroplasty for failed threaded acetabular components: radiographic evaluation of cup migration

2002 ◽  
Vol 7 (4) ◽  
pp. 467-471 ◽  
Author(s):  
Yoshio Takatori ◽  
Setsuo Ninomiya ◽  
Takashige Umeyama ◽  
Motoi Yamamoto ◽  
Toru Moro ◽  
...  
Keyword(s):  
Revision Arthroplasty ◽  
Radiographic Evaluation ◽  
Acetabular Components

scholarly journals 3D MODELLING AND PRINTING IN PRIMARY AND REVISION ARTHROPLASTY

2018 ◽  
Vol 25 (2) ◽  
pp. 21-29 ◽  
Author(s):  
N. V. Zagorodniy ◽  
G. A. Chragyan ◽  
O. A. Aleksanyan ◽  
S. V. Kagramanov ◽  
E. V. Polevoy
Keyword(s):  
Revision Arthroplasty ◽  
3D Modelling ◽  
Pelvic Bone ◽  
Type I ◽  
Biological Fixation ◽  
Surgical Interventions ◽  
Custom Made ◽  
Paprosky Classification ◽  
Acetabular Defects ◽  
Acetabular Components

Introduction. Acetabular arthroplasty in patients with the abnormal pelvic bone anatomy is a challenging task. In recent years the method of 3D modelling and printing of custom acetabular components is widely used at acetabular arthroplasty in patients with marked bone defects.Purpose of study: to evaluate the accuracy, convenience of the positioning and efficacy of the primary stabilization of custom acetabular components in patients with bone defects at primary and revision hip arthroplasty. Patients and methods. Eighteen surgical interventions using 3D modelling and printing, i.e. 12 for hip instability, 6 — for posttraumatic coxarthrosis were performed. The study included 9 women and 9 men with mean age 60.9±15.8 years. By Paprosky classification in 2 cases the defects corresponded to Type I, in1 case — Type IIA, in 4 cases — Type IIB (posttraumatic coxarthrosis), in 2 cases — Type IIIA, in 10 — Type IIIB out of them 2 cases with pelvic bone separation. Custom components were produced using the method of direct metal laser sintering (DMLS). The whole technologic process took from 4 to 8 weeks and was conducted jointly with the engineers. Results. Exact match of implant form and the defect was observed in 89.9% of cases. In 2 patients with pelvic bone separation additional correction of bone structures was required when placing the acetabular component. In radiograph from 2 to 8 months after surgery the constructions were stable.Conclusion. 3D technology for the custom-made acetabular components is a method of resolving the problem in patients with marked acetabular defects. It enables to plan the surgery, simplifies the choice for screws positioning avoiding their interference. The design features of the implant are three rigid flanges with screw holes that create additional contact with intact parts of the ischial, iliac and pubic bones. Screw fixation ensures initial rigid stability until the biological fixation is achieved.

3D Printed Models for Surgical Planning and Reconstructive Implant Design in Sphenoorbital Tumor Surgery

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Hassan Othman ◽  
Sam Evans ◽  
Daniel Morris ◽  
Saty Bhatia ◽  
Caroline Hayhurst
Keyword(s):  
Surgical Planning ◽  
Implant Design ◽  
Tumor Surgery ◽  
3D Printed

The Repair and Healing of Two Traumatic Ilial Body Fractures Adjacent to Cemented Total Hip Acetabular Components

1992 ◽  
Vol 05 (02) ◽  
pp. 85-89
Author(s):  
P. K. Shires ◽  
T. L. Dew
Keyword(s):  
Internal Fixation ◽  
Cancellous Bone ◽  
Surgical Techniques ◽  
Autogenous Bone ◽  
Cancellous Bone Graft ◽  
Standard Methods ◽  
Intravenous Antibiotics ◽  
Prophylactic Use ◽  
Acetabular Components ◽  
Autogenous Bone Grafts

SummaryThis report has documented the repair and healing of two ilial fractures in dogs which were compounded by the presence of a cemented acetabular prosthesis. While specific recommendations can not be made from such a small number of cases, the information presented herein suggests that such fractures will heal without complication if aseptic surgical techniques and standard methods of internal fixation are employed. The authors strongly recommend the prophylactic use of intravenous antibiotics and the placement of cancellous bone graft when the repair of such fractures is attempted.Two traumatic ilial fractures involving the cement/bone interface of acetabular prostheses were repaired using lag screws, cerclage wires, and autogenous bone grafts. The fractures healed and ambulatory function was regained.

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