4WEB®

Patient Specific Implants

Ortho Solutions is the exclusive distributor in the UK for 4WEB®patient specific orthopaedic devices. These devices are only available for sale by Ortho Solutions in the UK.

 

The advent of 3D printing ushers in an era of even more customizable patient specific implants with seemily limitless size, shape, and material options, thus opening a new frontier for reconstructuve efforts in patients previously relegated to complex limb salvage or amputation

Kamran S. Hamid et al – Salvage of Severe Foot and Ankle Trauma With a 3D Printed Scaffold – Foot & Ankle International 1-7 2016

 

Treating patients with significant bone loss can be an exacting challenge. The recent introduction of additive manufacturing techniques, into the production of medical devices has opened up the possibility of designing and manufacturing implants which closely match a patient’s anatomy.

The patient specific 4WEB®implants can be used in either Trauma, Tumour, Limb Reconstruction or Fusion applications.

 

 

Truss structure combines strength with even load distribution through the cage and apposing bone.

The cage is fabricated from medical grade Titanium alloy using Electron Beam Welding. A proven orthopaedic implant material.

Open architecture ensures that up to 75% of the cage can be filled with bone graft material.

More than 6,000 4Web® cages implanted.

 

Patient Specific Implant Service

 

 

Ordering Process

Only 6 steps and short lead time

The ordering process for a Patient Specific Implant is straightforward and has 6 main steps. OrthoSolutions will supply the custom device to the hospital 5 weeks from the sign off of the design by the prescribing surgeon and the receipt of the purchase order.

1

1

Scan - Send CT to OrthoSolutions.

2

2

Prescribe - Complete and return patient specific prescription.

3

3

Plan - Virtual web based planning session with 4WEB to design patient specific implant.

4

4

Approve - Clinician approval of proposed implant design and quotation. Raise purchase order.

5

5

Print - 3D Manufacture Patient Specific Implant and trials.
Ship to hospital.

6

6

Implant - Surgery with patient specific implants.

Case Study

Patient Specific Implants

Surgical Treatment of Avascular Necrosis of the Body of the Talus with a Patient Specific Additive Manufactured Implant.

Mr Mark Davies

BM FRCS (Tr & Orth)

Consultant Orthopaedic Foot and Ankle Surgeon – Sheffield, UK.

In the spring of 2016, a 57-year old male presented with a 9-month history of unremitting pain in his left ankle. All weight-bearing activity exacerbated his pain and for four months he had had interrupted sleep because of his symptoms. As a result of his pain, he had been declared unfit to work as his managerial role required him to walk over 5 miles per day.

There was no history of preceding injury to his ankle and direct questioning about his general health revealed him to be entirely fit and well with no risk factors for avascular necrosis of the talus. Examination revealed swollen hindfoot with stiffness and irritability within both the ankle and subtalar joints but good soft tissue integumen and normal neurovascular assessment. There was no significant deformity in the sagittal or coronal plane.

A number of treatment options were discussed with the patient and it was decided to proceed with excision of the body of the talus, customised interposition implant and fusion with a hindfoot nail.

At 30 months of follow-up, he is free from pain and back at work doing his original job and enjoys walking up to 12 miles at a time through the terrain of the Lake District.

Case Study – Surgical Treatment of Avascular Necrosis of the Body of the Talus with a Patient Specific Additive Manufactured Implant.

 

 

Preoperative CT scan showing fragmentation of the body of the talus and AP standing radiograph

Plain AP aradiographs of the left ankle showing the loss of height within the body of the talus and degeneration of the ankle and subtalar joints.

Virtual model of 4WEB patient specific cage design prior to manufacture.

Definitive 4WEB patient specific cage prior to surgery.

4WEB cage filled with autograft and prior to implantation perioperatively

Standing AP radiograph at 18 months post surgery. The construct has clearly dynamised as evidenced by the broken calcaneal screw but all other features suggest that the implant has incorporated.

Standing lateral radiographs at 18 months post surgery. The construct has clearly dynamised as evidenced by the broken calcaneal screw but all other features suggest that the implant has incorporated.