The interface of polyetheretherketone (PEEK) with carbon nanotubes (CNTs) and graphene is investigated using density functional theory molecular dynamics within the REAXFF-lg interatomic interaction framework. dependence PEEK adsorption energy on polymer chain length, temperature, starting configuration fully stretched conformation, nature substrate was investigated. Overall, between polymers y...

Cervical laminoplasty is a widely used technique to enlarge the spinal canal for spinal cord decompression. The two common methods are an open door laminoplasty and a midline splitting laminoplasty. Several devices and materials have been used as a spacer for maintaining or stabilizing the lamina in the open or split position, however, some are difficult to implant. Moreover, they are not desig...

Abstract In the present study, effects of sliding velocity sequences on friction and wear properties pure polyetheretherketone (PEEK) a PEEK hybrid composite were studied. It is demonstrated that tribological its show complex nature dependence in studied range. The coefficient independent previous histories. contrast, testing sequence exerts obvious impact at slow velocities. With respect to pe...

When anterior reduction fail in the surgical treatment of cervical bilateral facet fracture-dislocation with concomitant disc extrusion, it is necessary to perform a reduction using a posterior approach and then a third anterior procedure is often necessary to accomplish the anterior reconstruction. This presents difficulties for both patients and surgeons because of the need for frequent posit...

A large number of interspinous process devices (IPD) have been recently introduced to the lumbar spine market as an alternative to conventional decompressive surgery in managing symptomatic lumbar spinal pathology, especially in the older population. Despite the fact that they are composed of a wide range of different materials including titanium, polyetheretherketone, and elastomeric compounds...

Extensive maxillofacial defects resulting from trauma or oncologic resection present reconstructive challenges. Various autografts and alloplastic materials in conjunction with standard soft-tissue techniques have been used in the reconstruction of these types of defects. Polyetheretherketone (PEEK) is a semicrystalline polyaromatic linear polymer exhibiting an excellent combination of strength...

We reviewed the biological elements supporting the usefulness of a specifically designed particulate form of demineralized bone matrix (DBM) with spinal fusion, and report some limitations of its use described in the medical literature and in the interbody space using a cadaveric biomechanical model. A literature review and description of the techniques used to augment spinal fusion are present...

Bioactive coatings are in high demand to increase the functions of cells for numerous medical devices. The objective of this in vitro study was to characterize osteoblast (bone-forming cell) adhesion on several potential orthopedic polymeric materials (specifically, polyetheretherketone, ultra-high molecular weight polyethylene, and polytetrafluoroethylene) coated with either titanium or gold u...

BACKGROUND There is active debate amongst surgeons regarding best available method for cervical inter-body fusion. This study evaluates success of disc replacement with polyetheretherketone (PEEK) cage in patients operated for cervical radiculopathy or myelopathy. METHODS This case series was conducted between 2008 and 2012 during which 151 patients were treated with cervical inter-body fusio...

Several types of silicon fluidic coupler have been designed, fabricated, and tested to facilitate external connections to MEMS (microelectromechanical systems) fluidic devices. By using both bulk micromachining and DRIE (deep reactive ion-etching) techniques, couplers of different geometry have been produced for use with any standard MEMS fluidic port. In addition, couplers are easily modified ...