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ALIF Spine Solution

Stand-Alone ALIF Cage Surgical System

A radiolucent PEEK interbody fusion cage with three titanium locking screws, designed to create a zero-profile anterior fixation construct.

Material: PEEK
Fixation: Three locking screws
Approach: Anterior extraperitoneal

Explore Surgical Workflow View Specifications

(186,171,145) Stand-alone ALIF PEEK cage implanted in the lumbar spine

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Preface and Indications

The stand-alone ALIF cage combines a radiolucent PEEK interbody body with three locking screws for anterior fixation and stability.

Stand-Alone ALIF Cage Design

The implant is a radiolucent interbody fusion cage designed to create a zero-profile construct. The cage fits completely within the disc space and incorporates three titanium locking screws.

Biomechanical Concept Designed as a stand-alone ALIF construct with fixation support from three locking screws.

PEEK Material PEEK provides a modulus of elasticity similar to cortical bone.

Anatomic Shape A convex cage profile is designed to match the anatomy of the intervertebral disc space.

Footprints and Angles Two footprints and multiple lordotic angles are available to accommodate anatomical requirements.

Conical Locking A one-step conical locking mechanism secures the screws to the cage.

Divergent Screws Three divergent locking screws form a fixed-angle construct for vertebral body fixation.

Cortical Thread Self-tapping cortical threads support a larger core diameter for fixation.

Load Transfer The locking screw arrangement is designed to provide stability near the vertebral body cortex.

ALIF cage and screws in the lumbar spine

Indications

Lumbar and lumbosacral pathologies that may require anterior segmental arthrodesis, including:

Localised symptomatic degenerative disc disease
Revision surgery for failed decompression syndrome
Pseudoarthrosis

Contraindications

Spinal fractures
Spinal tumor
Osteoporosis
Infection

Operative Workflow

Surgical Procedure

1

Access and Exposure

Determine the approximate implant size by comparing the X-ray template with a lateral radiograph of the patient's adjacent intervertebral discs. Establish surgical access by positioning and securing the appropriate retractor or channel system to provide a stable working corridor for implantation.

Retractor Setup

Position and secure the selected retractor or access channel to maintain the working corridor.

Patient Positioning

For an anterior approach to the lower lumbar levels, position the patient in a slight Trendelenburg position.

Anterior Access and Level Confirmation

Locate the correct operative disc level and incision location using a lateral fluoroscopic view while holding a straight metal instrument at the side of the patient. This helps align the incision and exposure for direct visualization of the disc space.

2

Cut the Anterior Window

Cut a rectangular window, corresponding to the width of the stand-alone ALIF cage, through the anterior longitudinal ligament and annulus fibrosus. A trial implant may be used as a template to indicate the window width. Retain as much of the anterolateral, lateral, and posterior annulus as possible to preserve segmental stability.

3

Prepare the Disc Space and Endplates

Excise disc material and remove the cartilaginous endplates to expose the underlying bony vertebral endplates. Adequate preparation supports vascular supply to the bone graft. Excessive clearance or aggressive rasping may weaken the endplate and contribute to spacer subsidence.

After endplate preparation, complete any additional required decompression procedures. The nucleus and inner annulus should be removed to reduce the risk of displaced disc material entering the spinal canal during spacer insertion and interfering with bone in-growth.

Prepared lumbar disc space and endplates

Preparation and Trial Implantation

Distraction, Trialing and Graft Packing

4

Distraction and Trial Implantation

Segment Distraction

Verify the spreader position using an intraoperative lateral X-ray. Distraction of the segment supports restoration of disc height, opening of the neural foramina, and initial stability of the stand-alone ALIF cage.

Trial Implant Selection

Select the trial implant corresponding to the stand-alone ALIF size determined during preoperative planning. Attach it to the trial handle and tighten the handle firmly to prevent loosening during trial insertion.

5

Pack the Implant with Bone Graft

Attach the stand-alone ALIF cage to the implant holder and place it in the appropriate packing block. Fill the cage until the graft material protrudes through the perforations to support contact with the vertebral endplates. Use the cancellous bone impactor to firmly pack the graft material into the cage cavities.

The implant holder must be firmly attached to the cage to avoid damage to the holder or implant.

ALIF cage attached to implant holder and packing block

6

Screw Channel Preparation

Create the Pilot Hole

Hold the selected cage with the implant holder and prepare each vertebral body screw channel through the aiming device. The surgical technique recommends installing the middle screw first.

6.1 Awl Preparation

Insert the awl into the aiming device. Prepare the vertebral body for screw insertion by applying pressure to the awl handle with rotational movements while guiding the awl through the cage screw mounting hole.

Awl preparation through the ALIF aiming device

Close view of awl placement through the cage

6.2 Drill the Screw Channel

Remove the awl, select the drill bit with the appropriate length and specification, and advance it along the guide to create the screw hole.

Drilling the vertebral body screw channel

Close view of the drill bit through the ALIF cage

6.3 Tap the Screw Hole

Advance the tap through the cage screw mounting hole to prepare the thread. Establishing the screw channel before tapping facilitates subsequent screw implantation.

7 Pre-Loading

Screw Implantation

Connect the pre-loading wrench to the quick-release handle. Hold the vertebral body screw and advance it into the vertebral body along the prepared screw channel.

Close view of locking screw implantation

Completion

Final Tightening and Placement Verification

8

Screw Implantation — Final Tightening

After all screws are implanted, connect the final screwdriver to the quick-release handle and tighten the vertebral body screws one by one.

9

Verify Placement

Confirm the final implantation position with intraoperative X-ray imaging before completing the procedure.

Anterior view of final ALIF cage placement

Lateral view of final ALIF cage placement

Implant Specifications

Product Information

ALIF Stand-Alone PEEK Cage

Φ42 × 31 × 13 / 6°
Φ42 × 31 × 13 / 10°
Φ42 × 31 × 15 / 6°
Φ42 × 31 × 15 / 10°
Φ42 × 31 × 17 / 6°
Φ42 × 31 × 17 / 10°
Φ42 × 31 × 13 / 9°
Φ42 × 31 × 13 / 12°
Φ42 × 31 × 15 / 9°
Φ42 × 31 × 15 / 12°
Φ42 × 31 × 17 / 9°
Φ42 × 31 × 17 / 12°
Φ30 × 26 × 13 / 9°
Φ30 × 26 × 13 / 12°
Φ30 × 26 × 15 / 9°
Φ30 × 26 × 15 / 12°
Φ30 × 26 × 17 / 9°
Φ30 × 26 × 17 / 12°

ALIF Screw

Product	Specification
ALIF Screw	Φ5.0 × 24
ALIF Screw	Φ5.0 × 29
ALIF Screw	Φ5.0 × 34

Specifications are reproduced from the supplied ALIF Cage Surgical PDF.

Instrument Configuration

Instrument Information

ALIF PEEK Cage Instrument Set

Configuration List

No.	Description	Qty.
1	Cage Holder	1
2	Drill Guide	1
3	Tap	1
4	Tap	1
5	Tap	1
6	Drill Bit	1
7	Drill Bit	1
8	Drill Bit	1
9	Awl	1
10	Screwdriver universal	1
11	Screwdriver universal	1
12	Screwdriver (Straight)	1
13	Cage Trial	1
14	Cage Trial	1

The supplied PDF displays fourteen listed rows. Repeated descriptions are retained as shown in the original configuration table.

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Stand-Alone ALIF Cage Surgical System

Contents

Preface & Indications

Surgical Procedure

Product Information

Instrument Information

Preface and Indications

Stand-Alone ALIF Cage Design

Indications

Contraindications

Surgical Procedure

Access and Exposure

Retractor Setup

Patient Positioning

Anterior Access and Level Confirmation

Cut the Anterior Window

Prepare the Disc Space and Endplates

Distraction, Trialing and Graft Packing

Distraction and Trial Implantation

Segment Distraction

Trial Implant Selection

Pack the Implant with Bone Graft

Create the Pilot Hole

6.1 Awl Preparation

6.2 Drill the Screw Channel

6.3 Tap the Screw Hole

Screw Implantation

Final Tightening and Placement Verification

Screw Implantation — Final Tightening

Verify Placement

Product Information

ALIF Stand-Alone PEEK Cage

ALIF Screw

Instrument Information

Configuration List

Request ALIF Cage System Pricing