LnK Basic Spinal System was developed to address the modern demands of advanced surgical techniques. By evaluating the strengths and weaknesses of similar systems currently on the market, the Design Team has incorporated many of these strengths into the LnK Spinal System and avoided the weaknesses presented by other spinal hardware systems. The LnK Spinal System is a low profile, top-loading system. This low-profile system features an enhanced closure mechanism technology and an ergonomically designed instrumentation set. The system consists of titanium alloy Poly Axial Screws, Reduction Screws, and Mono Axial Screws in various sizes with high degree of versatility.
The LnK Lumbar Fixation System is indicated for the following:
- Spinal stenosis
- Failed previous fusion
- DDD (back pain of discogenic origin with degeneration of the disc as confirmed by patient history and radiographic studies)
The implants are intended to provide stabilization as an adjunct to fusion when used with autogenous bone graft or allograft following the reduction of fractures/dislocations or trauma in the spine.
Hooks and rods are also intended to provide stabilization to promote fusion following reduction of fracture/dislocation or trauma in the upper thoracic/lumbar (T1 –S1) spine.
LnK Specialty Pedicle Screw System
LnK Specialty screw system is designed for the surgeon who is searching the best solution to the spinal fusion for deformity, revision surgery. Lateral Connector, Iliac Screw and side click domino can be used for any environment of the patients.
1. Pedicle Identification
The Pedicle entry point depends on the intersection techniques. It involves drawing a line from the lateral aspect of the facet joint, which intersects a line that bisects the transverse process at a spot overlying the pedicle. However, because of the high variability in pedicle dimensions on each level of vertebra, intraoperative radiopraph is checked to determine the exact position of the entry in the anterior, posterior and lateral projection after inserting Guide Pins
2. Pedicle Preparation
After the determination of the pedicle entry point, the entry hole is prepared by Awl. A pathway is then opened up with a Pedicle Probe from a smaller to a larger sequentially. The Pedicle Probe is calibrated and marked with 1cm intervals to help determine proper screw length.
A ball-tipped Tester is utilized to palpate five distinct bony borders (floor and four walls).
3. Screw Insertion
With the pedicle pathway prepared and proper pedicle screw length and diameter determined, the screw is ready for insertion. Place the screw slowly while checking proper trajectory using fluoroscopic x-ray.
4. Rod Insertion
Cut the Rod to the appropriate length and bend the rod with a Rod Bender to fit the desired spinal contours.
A Rod Holder can be used for optimal rod insertion.
5. Set Screw Application
After the rod is loaded into the bottom of the pedicle screw head, the set screw may be seated onto the top of the screw head using the Set Screw Driver
When the rod is not fully seated into the head of the pedicle screw, the Final Locking Wrench is preferred for reduction.
The Anti Torque Locking Wrench is then rotated clockwise levering the rod inside of the pedicle screw head. If necessary, the Rod Pusher is used to hold the rod inside of pedicle screw head
6. Compression or Distraction
The compression or the distraction procedure may be performed if necessary. In that case, extra caution should be required when placing the set screws securely against the head of the pedicle screws.
In either maneuver, the set screw on one side of the segment should be tightened provisionally, while the set screw on the other side remains loosened.
The Compression or Distraction will occur against the provisionally tightened screws.
7. Final Tightening
The final tightening is performed with the Final Set Screw Driver and the Anti Torque device
The Anti Torque device is placed to a pedicle screw and a rod, Whiles the Set Final Driver is inserted through the sleeve of the Anti Torque device
If necessary, the Set Screw Driver may be used to remove a set screw after final tightening. Once a set screw has been removed, it should be discarded and replaced with the new one.
8. Transverse linkconnection Technique
After selection of Cross link that corresponds in proper size for the distance between rods, the Transverse link is applied to the rods and tightened with two tightening pedicle screws.
If the size of Transverse link doesn’t fit exactly, Compressor or Distractor can be used accordingly to adjust the distance between rods before final fixation