Orthofix M6-C Artificial Cervical Disc Gebrauchsanweisung Seite 2

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The M6‑C™ Artificial Cervical Disc is an intervertebral disc prosthesis intended to permit motion of a functional spinal unit in the
cervical spine when the native disc is diseased.
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evIce escrIptIon
The M6‑C Artificial Cervical Disc is an intervertebral disc prosthesis designed to permit motion of a functional spinal unit in the
cervical spine when replacing a degenerated native disc. The device is comprised of ultra‑high molecular weight polyethylene
(UHMWPE) fiber wound in a specific pattern, with multiple redundant layers, creating a fiber matrix (artificial annulus). The fiber
is wound around a polycarbonate urethane polymer (PCU) core (artificial nucleus) and through the slots in two Ti6Al4V titanium
alloy inner endplates (see Figure 1). The core is situated between and in contact with the two inner endplates, but not affixed to
them. A PCU sheath surrounds the fiber matrix and is retained by two Ti6Al4V weld bands that are welded to the inner endplates.
Two Ti6Al4V outer endplates are also welded to the inner endplates. The exterior surfaces of the outer endplates include low
profile fins and are coated with titanium plasma spray (TPS).
Figure 1: Cross‑Section View of the M6‑C Artificial Cervical Disc
The M6‑C Artificial Cervical Disc is designed to maintain the natural behavior of a functional spinal unit by replicating the
biomechanical characteristics of the native disc. This design enables the M6‑C Artificial Cervical Disc to move in all six degrees
of freedom, with independent angular rotations (flexion‑extension, lateral bending and axial rotation) along with independent
translational motions (anterior‑posterior and lateral translations as well as axial compression). The device is intended to replicate
the physiological phenomenon of progressive resistance to motion in all six degrees of freedom. The sheath is designed to
minimize any tissue ingrowth as well as the migration of wear debris. The serrated fins provide acute fixation to the superior and
inferior vertebral bodies. The TPS coating increases the bone contact surface area.
The M6‑C Artificial Cervical Disc is currently offered in four different footprint sizes and two heights, as shown in Figure 2 and
Table 1.
Figure 2: M6‑C Artificial Cervical Disc Heights and Footprint Sizes
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