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PEEK-OPTIMA™ HA Enhanced Polymer by Invibio Improves Interbody-fusion Outcomes

Published on 2017-01-19. Author : SpecialChem

THORNTON CLEVELEYS, UK -- Early clinical results presented by surgeons at the 2016 annual meeting of the North American Spine Society (NASS) demonstrate high fusion rates at 6 months and beneficial clinical outcomes, for patients in the majority of cases, when PEEK-OPTIMA™ HA Enhanced is used for interbody-fusion devices.

Interbody-fusion Outcomes

The implantable high-performance polymer, from Invibio Biomaterial Solutions, uniquely combines PEEK-OPTIMA, the principal PEEK-based biomaterial with over 15 years of proven history in clinical use, and hydroxyapatite (HA), a well-known osteoconductive material that enhances bone apposition, and is fully integrated.

Previous studies by Invibio have highlighted that enhancing bone apposition on all surfaces of an interbody-fusion device may offer better integration and improved potential for spinal fusion.

John Devine
John Devine
John Devine, Invibio Medical Business Director, said:
“The findings on first clinical cases for PEEK-OPTIMA HA Enhanced presented at the NASS 2016 annual meeting are demonstrating the Invibio goal of providing solutions that have the potential to improve clinical outcomes and advance bone apposition in interbody-fusion procedures. In addition, the results presented confirm that the partnerships we have forged with device manufacturers and surgeons are pioneering approaches that are leading to positive results for patients.”

Lumbar Spine Fusion with PEEK-OPTIMA HA Enhanced Device
  • During NASS, Timothy Bassett, MD, of SouthEastern Spine Specialists, Tuscaloosa, AL, presented his ‘Early Clinical Experience with a PEEK-OPTIMA HA Enhanced Device for Lumbar Fusion’. 
  • The 1-2 level TLIF (Transforaminal Lumbar Interbody Fusion) procedure utilized the EVOS HA Device, from Cutting Edge Spine, intended for use in skeletally mature patients with Degenerative Disc Disease (DDD) of the lumbar spine, plus autograft bone with posterior instrumentation. 
  • No biologics were used in this series of nine patients.

The clinical results were evaluated for pain on the Visual Analogue Scale (VAS), opiate usage, neurological function, re-operations and complications. Fusion results were evaluated using anteroposterior (AP) and lateral X-rays at six weeks and 12 weeks, and a CT scan at six months.

Solid Lumbar Fusion at 6 Months on CT Scan with the EVOS-HA Lumbar Interbody System from Cutting Edge Spine
Solid Lumbar Fusion at 6 Months on CT Scan with the EVOS-HA
Lumbar Interbody System from Cutting Edge Spine
Dr Bassett concluded:
“Very rapid visible bone fusion occurred in the interbody region in six weeks, according to plain radiographs, with correspondingly good clinical results including no neurologic consequences beyond 6 weeks, no implant migrations, no subsidence, and no pseudoarthroses. More importantly, 9/10 fusions were definitively solid on 6 month CT scan with autograft bone, despite some challenging patients. The one that didn’t show complete fusion was progressing to fusion and used one pack of tobacco daily, both pre- and post-operative, contributing to the fusion challenge."
Cervical Interbody Fusion: Promising Results Regarding Pain and Neurological Function
Brad Prybis, MD at Carrollton Orthopaedic Clinic, Carrollton, GA, assessed use of the Talos®-C (HA) Cervical Interbody Fusion Device, from Meditech Spine, in patients who underwent 2-3 level anterior cervical discectomy and fusion (ACDF). Clinical (pain and neurological function) and radiographic outcomes were assessed at six months post-operatively.

Arm pain was resolved in all 8 patients; in 5/8 patients neck pain was resolved and improved in 7/8 patients. Furthermore, all 8 patients demonstrated improved neurological function, with residual numbness in 3/8, and residual weakness in 1/8 patients. 17/17 levels were fused 6 months post-operatively.

Commenting on the findings, Dr Prybis said:
“The Talos-C (HA), a next-generation interbody-fusion device made from PEEK-OPTIMA HA Enhanced polymer, provided clinical and radiographic results as good as or better than traditional PEEK interbody devices, with consistently good outcomes at early timepoints we are looking forward to the results of further clinical studies.”

PEEK-OPTIMA HA Enhanced biomaterial offers all the clinical advantages of PEEK-OPTIMA Natural including a modulus similar to cortical bone, reduced stress shielding and artifact-free imaging that allows for clear fusion assessment. Developed by Invibio this innovative high performance polymer for spinal fusion implants eliminates the extra processing time and expense of alternative bone on-growth technologies, such as coatings. Implant devices made of the novel PEEK-OPTIMA HA Enhanced have already been cleared by regulatory bodies in both the US (FDA 510(k) clearance) and Europe (CE mark approval).

About Invibio

Invibio is a proven device partner and among the leading providers of biomaterials solutions. For 15 years, its revolutionary polymer materials, unsurpassed manufacturing support and deep medical device knowledge have helped device companies around the globe bring innovative products to market more rapidly.

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Source: Invibio Biomaterial Solutions
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