Category: Vertebral Body Replacement
The SYNFIX® LR System is a comprehensive set of implants and instruments designed for stand-alone anterior stabilization of the lumbar spine from L2 to S1.
The SYNFIX LR System is a standalone ALIF device that incorporates the benefits of an anterior plate and a radiolucent interbody spacer. The design creates a zero-profile construct and includes four locking screws that provide anterior fixation and stability.
The SYNFIX LR System is a standalone anterior interbody fusion device indicated for use in patients with degenerative disc disease (DDD) at one or two contiguous levels from L2 to S1. These DDD patients may also have up to Grade 1 spondylolisthesis at the involved level(s). The interior of the spacer component of the SYNFIX LR System can be packed with autograft.
DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies. These patients should be skeletally mature and have had six months of nonoperative treatment.
Use of the SYNFIX LR System is contraindicated when:
|Stand-alone ALIF implant||
Biomechanically equivalent to a spacer with pedicle screws1
PEEK spacer provides modulous of elasticity similar to cortical bone
Titanium plate with locking screws with 15 and 30mm lengths provide stable fixation
|Spacer and plate fit completely within the disc space|
The SYNFIX-LR is convex to match the anatomy of the disc space
Two footprints, two lordotic angles, and five heights are offered to accommodate individual patient anatomy
|Screw and plate fixation||
One-step conical locking mechanism eliminates need for blocking plate
Locking screws provide stability and load transfer near the cortex of the vertebral body
Four locking screws diverge to form a fixed-angle construct that creates a wedge of bone for fixation
Self-tapping cortical threads allow largest possible core diameter for maximum fixation
1C.M. Cain, P. Schleicher, R. Gerlach, R. Pflugmacher, F. Schotz M, F. Kandziora “A New Stand-Alone Anterior Lumbar Interbody Fusion Device Biomechanical Comparison with Established Fixation Techniques.” Spine. 2005 Dec 1; 30 (23)” 2631-6.