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ROI®
The specifications of the ROI implant satisfy the
requirements of lumbar arthrodesis.
The radio-lucent open fusion system, including
the MC+® and ROI products provides a wide array of
intraoperative options and exclusive technical
characteristics.
Geometry
The open geometry of the ROI implant defines its
unique characteristics which enhance the quality of
bone graft.
Reliability
Independent testing completed by
several laboratories, including
Orthopaedic Research Laboratories,
confirms the reliability of the
ROI & MC+ implants as intervertebral
body replacement devices.
Stable and anatomic
Both the MC+® and the ROI designs
aim to facilitate the restoration of normal
anatomy and attainment of excellent primary
stability.
Graft and fusion
The quality and contact surface of the graft are
essential for the success of arthrodeses.
Radiolucency and safety
The use of PEEKOptima ®, an advanced polymeric
biomaterial with an extensive track record in fusion
applications is ideal for follow-up and control.
Sterility and traceability
Optimized management: sterile packaging of implants
allows immediate usage upon delivery, without any
additional processing. Daily management of implants
is therefore simplified. |
Geometry
The open geometry of the ROI implant defines its unique characteristics which enhance the
quality of bone graft.
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A vast, single grafting area and
single fusion mass
The role of the large implant-graft volume is to enable
vascularization from one vertebra to the other over the
largest possible grafting area.
The ROI concept with its opening and
peripheral load bearing surfaces favors grafting by
allowing the creation of a large single fusion mass.
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Restoration of lordosis
Restoration of desired lordosis is possible when placing
an implant with a lordosing design. The ROI implant
satisfies this requirement through a difference in
its antero-posterior height.
The ROI PVBR with its open
design and lordosis options facilitates the
intraoperative re-creation of normal anatomy.
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Reliability
Independent testing completed by several laboratories, including Orthopaedic Research Laboratories, confirms the
reliability of the ROI & MC+ implants as intervertebral body replacement devices.
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Mechanical testing
Testing of the ROI and MC+® implants was completed by
independent laboratories in accordance with ASTM F 2077
(Test Methods for Intervertebral Body Fusion Devices).
This testing confirms that the ROI and MC+ provide the
necessary mechanical properties to provide primary
stability and distribution of loads along the spine
segment. These mechanical properties and design of the
implants provide conditions necessary for fusion.
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ROI Static Axial Compression
Test |
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Average Maximum Load |
17014 N |
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Standard Deviation |
944 N |
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Range |
15685 – 18481 N |
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ROI Dynamic Compression Test |
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Frequency |
5 Hz |
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Load Cycle |
510 – 5100 N |
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Number of Cycles |
5,000,000 (without cracking or deformation) |
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ROI Dynamic Torsion Test |
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Frequency |
5 Hz |
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Moment Load Cycle |
+/- 2400 N-mm |
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Number of Cycles |
5,000,000 (without cracking or deformation) |
Independent testing of ROI and
MC+ implants was completed by Orthopaedic Research
Laboratories, CRITT-MDTS and LNE.
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Stable and Anatomic
Both the MC+® and the ROI designs aim to facilitate the restoration of normal anatomy and attainment
of excellent primary stability.
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A peripheral support area outside
the grafting area
and restoration of lordosis
• The ROI implant makes it possible to recreate a normal
anatomic intravertebral space while simultaneously
respecting the grafting area and resting as close as
possible to the peripheral border of the vertebral
end-plate.
Maximum contact surface for
optimal stability
• ROI implants are shaped with an opening allowing them
to be thicker without reducing the grafting surface.
Weight bearing of the ROI implant is therefore applied
on a wide, strong and intact bone surface (close to the
peripheral border of the vertebral end-plate).
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A concept aimed at stability
• As soon as MC+® and ROI PVBR are placed, the
serrated profile of the implants ensures their
self-retaining properties, until fusion is achieved.
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The ROI anterior and posterior
heights determine the desired lordosis. They are
available in three angulations (0°, 5°, 8°).

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Graft and Fusion
The quality and contact surface of the graft are essential for the success of arthrodeses.
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A vast grafting area and a single
fusion chamber
• The ROI concept favors grafting by creating a single
fusion chamber.
• ROI Implants are shaped with an opening allowing them to be
thicker without reducing the grafting surface.
• Free contact between the grafts within the open
implants allows a “one-and-only” fusion block. |

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The ROI PVBR enables
vascularization from one vertebra to the other over the
largest possible area.
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Radiolucency and Safety
The use of PEEKOptima ®, an advanced polymeric biomaterial with an extensive track record
in fusion applications is ideal for follow-up and control.
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Radiolucency and consistency
• The biocompatibility and mechanical qualities of
PEEK-Optima® are largely recognized in fusion applications.
• PEEK-Optima® has an elasticity close to that of bone so that
there is no graft weight-bearing problem. There is consequently,
a biomechanical consistency between two spine segments, the
fusion of which can be assessed radiographically.
Safety
• The MC+® and ROI PVBR are implanted according to a
reproducible operating technique.
• The serrated profile of the implant ensures their
self-retaining properties, until fusion takes place.
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Tantalum markers facilitate
intraoperative positioning
and follow-up of the PBVR.
ROI and MC+®
instrumentation was
designed by and for
spine surgeons. |
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Sterility and Traceability in a Compact System
Optimized management: sterile packaging of implants allows immediate usage upon delivery, without any additional
processing. Daily management of implants is therefore simplified.
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Sterilization
• All MC+® and ROI implants are delivered in double
blister pack sterile packaging, with sterilization control stickers.
Absolute traceability
• Each implant is absolutely traceable from the initial
manufacturing step to the final implantation.
Product quality assurance
• Sterile packaging ensures the implant is delivered to
the surgical field in its original condition.
Easypack®
• A new implant distribution system for the operating
room. This exclusive LDR Spine “sterile implant
distribution” system ensures the simple and reliable
management of implants in the operating room.
A single tray container
• ROI and MC+® instrumentation was designed by and for
spine surgeons. The result: simple and functional instrumentation. |

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