## Introduction
In Posterior Lumbar Interbody Fusion (PLIF), the goal is to stabilize the motion segment and restore the natural architecture of the disc space. Choosing the correct **PLIF Cage** size is essential for indirect decompression of the nerves and the long-term health of the lumbar spine.
## Goals of Disc Space Restoration
1. **Disc Height:** Restoring height opens the neural foramen, relieving pressure on the nerve roots.
2. **Lumbar Lordosis:** Cages must be wedge-shaped (lordotic) to help maintain the natural “S-curve” of the spine.
3. **Endplate Coverage:** Maximizing the contact area reduces the risk of the cage sinking into the vertebral body.
## PLIF Sizing Parameters
Ortholyx PLIF cages come in a wide range of dimensions to accommodate varying patient sizes:
* **Height:** Ranges from 7mm to 14mm.
* **Length:** Typically 20mm to 32mm.
* **Width:** Standard 9mm to 11mm for posterior insertion.
* **Lordotic Angles:** 0掳, 4掳, and 8掳 options.
## Material Choice: PEEK with Tantalum Markers
Ortholyx PLIF cages are manufactured from **Medical Grade PEEK**, featuring integrated **Tantalum Markers**. These markers allow the surgeon to precisely see the position of the radiolucent cage on intraoperative fluoroscopy.
## Conclusion
Successful PLIF requires more than just hardware; it requires anatomical restoration. By utilizing the comprehensive sizing library of Ortholyx PLIF systems, surgeons can ensure a “perfect fit” for every spinal segment.