Designed by leading spine surgeons,
Easyspine^® features a simplified
surgical technique and adaptable implants
to accommodate various pathologies.

Unique, pre-assembled screws
- Pre-assembled locking components - no risk
  of dropping parts or cross threading
- Integrated multiaxial connections

A new standard: the LDR flattened rod
- Variable stiffnesses with a constant diameter
- Protection safety stops
- All rods compatible with all screws

Mechanical optimization
- Reliable locking (flat-on-flat connection)
- Final locking torque 30-50% below
  other systems’ requirements

Implant options for all pathologies
- Standard screw
- Alpha screw
- LP screw
- Pedicle hook
- Under laminar hook
- Lateral connector
- Cross connection
- Spacer

Sterility and traceability
- Sterile packaging

 
No assembly
screws and hooks

Pre-assembled locking
components

• No risk of cross threading set
  screws.
• No risk of dropping parts.

Integrated multiaxial joints

• Allows multiaxial range of motion.
• Adapts the screw to various
  pedicle trajectories.
• Directs the flattened part of the
  rod according to the desired
  lordotic curve.
• Allows for parallel distraction and
  compression.

Back to Top
 

 
A new standard:
the LDR flattened rod

Variable stiffnesses with
a constant diameter

Three rod heights with constant diameter (6mm) are available in order to obtain different construct rigidities, while using the same screws.

Protection safety stops

• The rod ends incorporate a
  2mm stop to avoid any
  unintentional over-shooting of
  the rod at the superior and
  inferior screw assembly.
• The rod stops helps to protect
  the articular facet joints by
  allowing the rod end to be
  completely contained within
  the screw head, reducing the
  incidence of facet joint
  impingement.

Compatible with all screws

• All implants (screws and hooks)
  are interchangeable with all rods,
  whatever the stiffness.
• Rod choice can be made
  intraoperatively, once the screws
  or hooks are implanted.
• Take advantage of the low profile
  of the slender rods for the easiest
  rod loading.

Rotation control

The flattened rod helps prevent any rotation of the rod in the screw head during distraction, compression and scoliosis correction, as well as after final lock.

Restoration of lordosis

The flattened rod allows a visual check of the proper lordotic position in the screw heads.

Back to Top
 

 
Mechanical
optimization

Reliable flat on flat
locking system

• Connection reliability is optimized
  by contact between two flat
  surfaces (flat rod matches
  flatfaced swivel joint), rather
  than the point or line contact of
  other systems.
• The final tightening torque is 30
  to 50% below the requirements
  of other systems, minimizing the
  stress imposed on the overall
  construct and the spine⁽¹⁾.
• Pre-assembled set screws enable
  the tighter, stronger set screw
  thread pitch of 0.5mm:
   - Compare to the 1.25mm set
     screw pitch of competitive
     systems.
   - Increases the surface contact
     between the threads to ensure
     better long term lock reliability.
 

(1) Ralph Edward Stanford, FRACS, PhD, Andreas Herman Loefler, FRACS, Philip Mark Stanford, DipAppSci, and William R. Walsh, PhD, Multiaxial Pedicle Screw Designs: Static and Dynamic Mechanical Testing, SPINE Volume 29, Number 4, pp 367-375 (2004).

Strong bony anchorage

• The Easyspine screw features
  a tapered core and constant
  outer thread diameter. Specially
  designed to:
  - Match anatomically tapered
    pedicles.
  - Maximize the diameter of the
    screw at the entry point of
    the pedicle (increasing the
    pullout strength).
  - Allow for height adjustments
    (stability is maintained by the
    outer threads at the screw’s
    base).

Notable mechanical tests

Mechanical tests by an independent laboratory highlighted the following factors:
• The Easyspine multiaxial
  connection was able to withstand
  an axial load of 1400 N (slippage
  resistance test).
• Easyspine’s maxiumum load
  without failure was in the better
  half of the competitors at 375 N
  (static multiaxial resistance test)⁽²⁾.
• All tests were performed using a
  locking torque 30 to 50% below
  ompetitive systems and the
  smallest diameter screw of any
  competitor tested.

(2) Guy R. Fogel, MD, Charles A. Reitman, MD, Weiqiang Liu, PhD, and Stephen I. Esses, MD. Physical Characteristics of Polyaxial-headed Pedicle Screws and Biomechanical Comparison of Load with their Failure. SPINE Volume 28, Number 5, pp 470-473 (2003).

Back to Top
 

 
Combine implants
to fit the pathology

Alpha screw

Standard screw

LP screw

Built-in offset
10mm of built-in offset
facilitates:
• Lateral screw placement.
• The staggering of pedicle
  screw locations.
• Rod insertion.

70° of motion
• Screw allows 20° of movement in a 360° range
• Duel connection design allows for 70° of total
  head motion due to the:
  - Polyaxial component: the screw head to screw shaft connection.
  - Multiaxial component: the screw head to rod connection.

 

Simplifies spondylolisthesis
reduction with minimal instrumentation.

Independent component locking

Each multiaxial component locks independently, allowing:
• Greater control over reduction
  maneuvers.
• Pre-assembly away from the  
  bone.

1. Independent locking of the screw head to the screw stem using the lock nut.

2. Independent locking of the rod in the screw head using the set screw.
 

Pedicle hook
• Multiaxial locking ball joint allows
  for 20° of angulation, 40° total.
• Designed for use in the thoracic
  region, T11 and superior.
• Right and left hook shapes
  available.

Under laminar hook

• Similar to the LP screw:
  - The duel connection
    design allows for 50° of
    total motion due to a
    polyaxial component
    (the head to hook connection)
    and the multiaxial component
    (the head to rod connection).
  - Hook allows 20° of movement
    in a 360° range
  - 10mm of built-in offset facilitates
    flexible hook placement.
• Designed for use in the lumbar
  region as an angled offset hook.
• Right and left hook shapes available.
 

Lateral connector

• Designed for use with the
  Alpha screw.
• Provides an adjustable offset
  distance of 13-24mm.
• Incorporates the same
  multiaxial connection used
  in the Standard screw.

Cross connection

Use in either compression or distraction.

Back to Top
 

Sterility
and traceability

LDR is the first spine company to
guarantee the absolute traceability
of its entire product range, due
to our sterile packaging and lot
numbering system.

Sterilization

All implants are double packaged
in one blister pack and one
vacuum packed plastic bag with
sterilization control stickers.

Absolute traceability

Each implant is absolutely traceable from the initial manufacturing step to final implantation.

Product quality assurance

Sterile packaging ensures the implant is delivered to the surgical field in its original condition.
 

Optimized management

• Sterile packaging of implants allows immediate usage
  without any additional time or money required for
  sterile processing.
• Easyrack™ “sterile implant distribution system” ensures
  a clean visual display and reliable management of implants
  in the operating room.

Instruments:
A compact system

• Designed by and for spine
  surgeons.
• Simple and functional
  instrumentation help assure
  a reproducible technique.
• Full compatibility between all
  screws and all rods provides the
  same surgical options of typical
  pedicle screw systems, yet
  require only a third of the
  inventory.

ES B 1 EN 04.2008 A