19 Harley St, London, W1G 9QJ, UK

Designing an anatomical contour titanium 3D-printed oblique lumbar interbody fusion cage with porous structure and embedded fixation screws for patients with osteoporosis – Lumbar Fusion

Day Case Lumbar Fusion Surgery

The article discusses the design of a three-dimensional printed lumbar interbody fusion (OLIF) cage with embedded screw fixation and a porous lattice structure. The study aimed to enhance bone ingrowth, reduce the risk of cage subsidence, and prevent the stress-shielding effect. The researchers used finite element analysis and weight topology optimization to optimize the structural design based on the anatomical contour morphology of patients with osteoporosis. The cage was fabricated using metal 3D printing and underwent mechanical resistance tests. The results showed improved stability and stress distribution with the embedded screw model compared to standalone cages or those fixed with a lateral plate. The OLIF cage also exhibited greater dynamic axial compression and compressive-shear strengths compared to the FDA standard. Overall, the study highlights the potential of integrating FE and WTO analysis in designing OLIF cages for improved stability and mechanical strength

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
The London Spine Unit : finest spinal hospital in UK

Published article

This study aimed to design an anatomical contour metal three-dimensional (3D)-printed oblique lateral lumbar interbody fusion (OLIF) cage with porous (lattices) structure and embedded screw fixation to enhance bone ingrowth to reduce the risk of cage subsidence and avoid the stress-shielding effect. Finite element (FE) analysis and weight topology optimization (WTO) were used to optimize the structural design of the OLIF cage based on the anatomical contour morphology of patients with…

Lumbar Fusion Surgery Expert. Best Spinal Surgeon UK
Int J Bioprint. 2023 Jun 13;9(5):772. doi: 10.18063/ijb.772. eCollection 2023.ABSTRACTThis study aimed to design an anatomical contour metal three-dimensional (3D)-printed oblique lateral lumbar interbody fusion (OLIF) cage with porous (lattices) structure and embedded screw fixation to enhance bone ingrowth to reduce the risk of cage subsidence and avoid the stress-shielding effect. Finite element (FE) analysis,

Int J Bioprint. 2023 Jun 13;9(5):772. doi: 10.18063/ijb.772. eCollection 2023.

ABSTRACT

This study aimed to design an anatomical contour metal three-dimensional (3D)-printed oblique lateral lumbar interbody fusion (OLIF) cage with porous (lattices) structure and embedded screw fixation to enhance bone ingrowth to reduce the risk of cage subsidence and avoid the stress-shielding effect. Finite element (FE) analysis and weight topology optimization (WTO) were used to optimize the structural design of the OLIF cage based on the anatomical contour morphology of patients with osteoporosis. Two oblique embedded fixation screws and lattice design with 65% porosity and average pore size of 750 μm were equipped with the cage structure. The cage was fabricated via metal 3D printing, and static/dynamic compression and compressive-shear tests were performed in accordance with the ASTM F2077-14 standard to evaluate its mechanical resistance. On FE analysis, the OLIF cage with embedded screw model had the most stability, lowest stress values on the endplate, and uniform stress distribution versus standalone cage and fixed with lateral plate under extension, lateral flexion, and rotation. The fatigue test showed that the stiffnesses/endurance limits (pass 5 million dynamic test) were 16,658 N/mm/6000 N for axial load and 19,643 N/mm/2700 N for compression shear. In conclusion, an OLIF cage with embedded fixation screws can be designed by integrating FE and WTO analysis based on the statistical results of endplate morphology. This improves the stability of the OLIF cage to decrease endplate destruction. The complex contour and lattice design of the OLIF cage need to be manufactured via metal 3D printing; the dynamic axial compression and compressive-shear strengths are greater than that of the U.S. Food and Drug Administration (FDA) standard.

PMID:37457946 | PMC:PMC10339428 | DOI:10.18063/ijb.772

The London Spine Unit : finest spinal hospital in UK

Read the original publication:

Designing an anatomical contour titanium 3D-printed oblique lumbar interbody fusion cage with porous structure and embedded fixation screws for patients with osteoporosis

Related Posts

0/5 (0 Reviews)

Trusindex Reviews

London Spine Unit Harley Street Hospital

A Focus on High Quality Specialised Care

We are a specialist Private Hospital based on Harley Street, London UK The Harley Street Hospital, Day Surgery Hospital

We provide exclusive health services for individuals seeking Advanced medical, non-surgical or minimally invasive treatments. We are covered by All Insurance Companies apart from AXA PPP

Our Medical Director and Lead Spinal Surgeon Mr Mo Akmal MD is a world renowned Spine Specialist Consultant with over 20 years of experience. He and his team have developed revolutionary techniques to perform all types of Spinal Surgery as a Day Case procedure without traditional General Anaesthetic.

We are constantly improving our techniques for treatment and improving facilities for our patients.

Book your Appointment Now 
Check out our Reviews 
Check out our Patient Videos 
Check our Mr Akmal’s Profile

 

What our patients say ...

Int J Bioprint. 2023 Jun 13;9(5):772. doi: 10.18063/ijb.772. eCollection 2023.ABSTRACTThis study aimed to design an anatomical contour metal three-dimensional (3D)-printed oblique lateral lumbar interbody fusion (OLIF) cage with porous (lattices) structure and embedded screw fixation to enhance bone ingrowth to reduce the risk of cage subsidence and avoid the stress-shielding effect. Finite element (FE) analysis

Revolutionary Keyhole surgical technique to vaporise bulging discs

Dr Mo Akmal Medical Director
Dr Mo Akmal MD - Lead Spinal Surgeon

Laser Disc Surgery can be performed under local anaesthetic at The Harley Street Hospital.

Initial Consultation

with Consultant Spine Surgeon
£ 250
  • No Waiting Times
  • Top NHS affiliated Consultant
  • Includes Clinical Review and Report
  • Multidisciplinary discussion
  • Review of Previous Scans and Reports

Follow up Consultation

any appointment after initial consultation
£ 180
  • Top NHS affiliated Consultant
  • Includes Clinical Review and Report
  • Multidisciplinary discussion

High Resolution MRI Scan

any Single Region (3.0 Tesla)
£ 600
  • No waiting times
  • Includes Full Radiologist Report
  • Open or Closed MRI scan types
  • Copy of Scan on CD

Website Offer

Pre-Booked Online
£1130
£ 800
  • Initial Consultation
  • MRI Scan (Single Region)
  • Follow Up consultation
  • Same Day One Stop Visit
  • Full Medical and MRI scan Report
  • Copy of scan on CD
Popular

If you have any emergency Doctor’s need, simply call our 24 hour emergency

Your personal case manager will ensure that you receive the best possible care.

Call Now 

+44 844 589 2020
+44 203 973 8810