Titanium Coating OLIF Fusion Cage

Product Overview

The Titanium Coating OLIF Fusion Cage is a next-generation interbody device engineered specifically for the Oblique Lateral Interbody Fusion (OLIF) approach. This anatomically contoured cage features a advanced titanium plasma spray coating on its superior and inferior surfaces, which promotes rapid bony ongrowth and enhances initial fixation. The large central graft window allows for generous bone graft packing, facilitating robust fusion across the disc space. Designed with a 6° lordotic angle and available in multiple footprints (widths 8–13 mm, lengths 45–60 mm), this cage restores disc height and sagittal alignment while providing immediate structural stability. The OLIF corridor offers a muscle-sparing, retroperitoneal approach that avoids major vessels and the psoas muscle, reducing postoperative morbidity. Combining the biological advantages of titanium coating with the clinical benefits of lateral lumbar fusion, this system represents a state-of-the-art solution for degenerative, deformative, and revision spinal conditions.

Indications for Use

The Titanium Coating OLIF Fusion Cage is indicated for the following clinical scenarios:

• Degenerative disc disease of the lumbar spine (L1–S1) with chronic low back pain unresponsive to conservative management.

• Grade I and II spondylolisthesis requiring interbody stabilization and indirect decompression of neural elements.

• Lumbar spinal stenosis where restoration of disc height and foraminal volume provides indirect nerve root decompression.

• Adjacent segment disease following previous fusion, where a lateral approach minimizes scarring and avoids previous instrumentation.

• Adult spinal deformity (scoliosis or sagittal imbalance) where lordosis restoration and anterior column support are critical.

• Recurrent disc herniation requiring discectomy and interbody fusion to prevent future re-rupture.

• Revision surgery for failed prior interbody fusion or pseudoarthrosis, where the lateral corridor avoids compromised anterior or posterior anatomy.

Key Advantages

Technical Specifications & Sizing

Size Range Overview

The Titanium Coating OLIF Fusion Cage is available in a comprehensive sizing matrix designed to accommodate the full spectrum of lumbar endplate dimensions encountered in adult patients.

Key Dimensional Parameters:

• Width: 8, 9, 10, 11, 13 mm (five width options)

• Length: 45, 50, 55, 60 mm (four length options)

• Height: 18 mm (fixed, providing consistent disc space distraction)

• Lordotic Angle: 6° (anatomical restoration of segmental lordosis)

• Material: PEEK with titanium plasma spray coating (surface-modified)

• Coating: Titanium (Ti) deposited via vacuum plasma spray technology for uniform coverage and strong adhesion to the substrate

Detailed Dimension Table

Note: Product code nomenclature follows the pattern where the final two digits indicate the width (88=8mm, 89=9mm, 80=10mm, 81=11mm, 83=13mm). The 60 mm length is available for widths 9, 10, and 11 mm but not for 8 mm or 13 mm. All cages are supplied sterile, single-use, and individually packaged.

Recommended Companion Instrument Set

The Titanium Coating OLIF Fusion Cage is supported by a comprehensive instrument set designed for the oblique lateral approach, including:

RFQ – Request for Quotation

Q1: What is the recommended graft material to use with this OLIF cage, and what volume does the graft window accommodate?
A: We recommend packing the central graft window with either autologous local bone harvested from the laminectomy or facetectomy, or with a bone substitute such as demineralized bone matrix (DBM), biphasic calcium phosphate, or recombinant bone morphogenetic protein (BMP) per surgeon preference. The graft window volume varies by cage size—for the most common 10×50 mm size, the window accommodates approximately 3.5–4.0 cc of graft material, providing an ample surface area for fusion mass development. We advise filling both the cage and the surrounding disc space after cage impaction for circumferential biological bridging.

Q2: Can this titanium-coated PEEK cage be used as a stand-alone device without posterior pedicle screw fixation?
A: The titanium coating does enhance initial friction and stability, and we have many surgeons who successfully use this cage in a stand-alone manner for single-level degenerative disc disease with intact posterior elements. However, for multi-level constructs, spondylolisthesis > Grade II, osteoporotic bone, or cases with significant deformity, we recommend supplemental posterior fixation to provide additional stability during the fusion maturation period. The final decision should always be based on the patient's bone quality, activity level, and the surgeon's clinical judgment.

Q3: What is the clinical advantage of titanium coating versus standard PEEK cages, and does the coating increase the risk of implant subsidence?
A: The titanium plasma spray coating provides two primary benefits: first, it promotes osseointegration through direct bone-on-growth, which helps lock the cage to the endplates over time. Second, it increases the coefficient of friction by approximately 30–40% compared to smooth PEEK, reducing micro-motion and minimizing the risk of cage migration. Far from increasing subsidence, the coating uniformly distributes axial loads and protects the endplates by creating a more stable interface. Our finite element analysis and in-vitro testing demonstrate that coated cages exhibit lower subsidence rates than their non-coated counterparts.

Q4: What is the recommended technique for sizing the cage intraoperatively, and how are the trials labeled?
A: We recommend sequential trialing starting with a size one step smaller than the preoperative templated measurement. The trial sizers are color-coded and clearly labeled with width, length, and height dimensions. Under fluoroscopic guidance, the trial is inserted to ensure proper endplate coverage—it should span the apophyseal ring without overhanging medially into the canal or laterally into the vessels. Once the appropriate footprint and lordosis are confirmed, the final sterile cage with the matching titanium-coated surface is prepared and gently impacted into position. The radiopaque markers on the cage facilitate post-implantation confirmation of position and alignment.

Q5: Is the OLIF cage compatible with intraoperative navigation and robotic systems?
A: Yes, the cage and its instruments are designed with navigation-compatible surfaces and tracking arrays, and we are actively integrating our system with major navigation platforms (including Medtronic Stealth, Brainlab, and Globus). For robotic systems, the cage dimensions and insertion trajectory are fully compatible with standard robotic planning software. We recommend contacting our technical support team for specific compatibility details tailored to your institution's technology stack.

Q6: What are the standard packaging configurations and shelf life for this fusion cage system?
A: Each cage is individually packaged in a sterile blister pack and is supplied sterile with a 5-year shelf life from the manufacturing date. The shelf life is validated under standard storage conditions (room temperature, dry environment). For high-volume centers, we also offer multi-unit sterile trays containing 5 cages of the same size to reduce packaging waste and streamline OR turnover. Non-sterile trial sizers and instrument sets are provided separately in durable carrying cases and can be autoclaved for reuse.