The Posterior Cervical Laminoplasty System is a comprehensive internal fixation solution for cervical laminoplasty procedures. Manufactured from pure titanium and titanium alloy, it effectively expands the cervical spinal canal volume, providing full decompression of the spinal cord and nerve roots.
Four plate configurations — Open Door Plate, Hinge Plate, Bone Graft Plate, and Bridge Plate — accommodate diverse surgical techniques and anatomical requirements.
The Open Door Plate features a 2-hole design with 5 mm or 7 mm side opening thickness and lengths from 8 mm to 18 mm. Self-tapping screws in 2.6 mm and 3.0 mm diameters, with lengths from 5 mm to 11 mm, ensure secure fixation and effectively prevent re-closure after laminoplasty, reducing the risk of restenosis.
Cervical spinal stenosis with multi-level compression.
4
Cervical disc herniation with central or paracentral compression.
5
Multi-level cervical spondylosis suitable for laminoplasty.
6
Posterior decompression requiring stability and re-closure prevention.
7
Cervical canal enlargement with preservation of motion segments.
Posterior Cervical Laminoplasty System
The Posterior Cervical Laminoplasty System offers a range of distinct clinical benefits that enhance surgical outcomes and patient recovery.
Open Door Plate-3
Open Door Plate-4
Bone Graft Plate-3
Long-term Outdoor Adventure
Long-term Outdoor Adventure
Emergency Backup Power
Long-term Outdoor Adventure
Effective Canal Volume Expansion – The system provides significant expansion of the cervical spinal canal volume, fully relieving spinal cord and nerve root compression symptoms. The laminoplasty technique preserves the posterior elements while effectively increasing the canal cross-sectional area, providing immediate and sustained decompression.
Prevention of Re-Closure – The laminoplasty plate system effectively prevents re-closure after laminoplasty, ensuring maintained canal expansion and reducing the risk of restenosis. The robust plate design provides stable fixation of the opened lamina, maintaining the desired canal diameter throughout the fusion and remodeling process.
Comprehensive Plate Options – The system includes four distinct plate configurations: Open Door Plate (2-hole design, length 8–18 mm, side opening thickness 5 mm or 7 mm), Hinge Plate, Bone Graft Plate (2-hole design, length 8–18 mm), and Bridge Plate (various length and width configurations). This versatility allows surgeons to select the optimal plate for each specific surgical requirement.
Flexible Material Options – Manufactured from pure titanium and titanium alloy, the plates offer excellent biocompatibility, corrosion resistance, and MRI compatibility. The pure titanium construction provides optimal bone-implant interface characteristics, while the titanium alloy options provide enhanced mechanical strength for demanding applications.
Secure Fixation with Self-Tapping Screws – The system includes self-tapping screws in 2.6 mm and 3.0 mm diameters, with lengths ranging from 5 mm to 11 mm. The self-tapping design simplifies placement and enhances screw purchase in the cancellous bone of the cervical lamina. The screw design ensures secure fixation while minimizing the risk of screw loosening or pullout.
Sterile and Non-Sterile Configurations – Available in both sterile and non-sterile configurations, with product codes indicating sterile options (suffix "S"). This flexibility allows hospitals to choose according to their sterilization protocols and inventory preferences, simplifying OR logistics and reducing the risk of contamination.
Optimized Surgical Technique – The system is supported by a comprehensive instrument set including trial molds, curettes, plate holders, and drill bits, facilitating precise and efficient implantation. The intuitive instrumentation reduces surgical time and improves the reproducibility of successful outcomes.
Technical Specifications & Sizing
Size Range Overview
The Posterior Cervical Laminoplasty System offers four plate configurations with comprehensive sizing options to accommodate diverse surgical requirements and patient anatomies.
Detailed Dimension Tables
Open Door Plate (2-Hole Design)
Length (mm)
Side Opening Thickness (mm)
10 × 7
7
12 × 7
7
14 × 7
7
16 × 7
7
8 × 5
5
10 × 5
5
12 × 5
5
14 × 5
5
16 × 5
5
18 × 5
5
Hinge Plate
Configuration
Product Code
2 Hole
20370023
Bone Graft Plate (2-Hole Design)
Length (mm)
8
10
12
14
16
18
Bridge Plate
L (mm)
L1 (mm)
Height (mm)
34
12
15.5
34
14
16.5
36
12
15.5
36
14
16.5
34
16
17.5
34
18
18
36
16
17.5
36
18
18
Self-Tapping Screws
Diameter (mm)
Length (mm)
2.6
5
2.6
7
2.6
9
2.6
11
3.0
5
3.0
7
3.0
9
3.0
11
Additional Plate Options (Open Door Plate-3 and Bone Graft Plate-3)
Plate Type
Configuration
Length (mm)
Side Opening/Height
Open Door Plate-3
2 Hole
8 × 5
5 mm
Open Door Plate-3
2 Hole
10 × 5
5 mm
Open Door Plate-3
2 Hole
12 × 5
5 mm
Open Door Plate-3
2 Hole
14 × 5
5 mm
Open Door Plate-3
2 Hole
16 × 5
5 mm
Open Door Plate-3
2 Hole
18 × 5
5 mm
Open Door Plate-3
2 Hole
10 × 7
7 mm
Open Door Plate-3
2 Hole
12 × 7
7 mm
Open Door Plate-3
2 Hole
14 × 7
7 mm
Open Door Plate-3
2 Hole
16 × 7
7 mm
Bone Graft Plate-3
2 Hole
8
–
Bone Graft Plate-3
2 Hole
10
–
Bone Graft Plate-3
2 Hole
12
–
Bone Graft Plate-3
2 Hole
14
–
Bone Graft Plate-3
2 Hole
16
–
Bone Graft Plate-3
2 Hole
18
–
Note: All plates and screws are available in non-sterile and sterile configurations (suffix "S" for sterile). The Open Door Plate-3 and Bone Graft Plate-3 are additional product families with similar specifications, designed to provide expanded inventory options for high-volume surgical centers.
Recommended Companion Instrument Set
The Posterior Cervical Laminoplasty System is supported by a dedicated instrument set for precise implantation:
Instrument Name
Description
Specification
Quantity
Trial Mold
For size confirmation
Type I: 8/10
1
Trial Mold
For size confirmation
Type I: 12/14
1
Trial Mold
For size confirmation
Type I: 16/18
1
Cervical Curette
For tissue preparation
210 mm
1
Plate Holder
For plate grasping and positioning
210 mm
1
Drill Bit
For pilot hole preparation
Φ1.5
2
Bone Holding Forceps
For tissue retraction and positioning
215 mm
1
Open Cone
For entry point preparation
Φ1.2
1
Screw Holder
For screw grasping and insertion
120 mm
1
Quick-Change Handle
For rapid instrument exchange
160 mm
2
Screwdriver
For screw insertion and tightening
160 mm
2
RFQ – Request for Quotation
Q1: What is the difference between the Open Door Plate, Hinge Plate, Bone Graft Plate, and Bridge Plate? A: The Open Door Plate is used to maintain the opened lamina in an elevated position, providing the primary canal expansion. It features a 2-hole design with side opening thickness options of 5 mm or 7 mm. The Hinge Plate serves as the contralateral hinge point, providing stability to the opposite side of the laminoplasty. The Bone Graft Plate is used for interpositional bone graft fixation, maintaining the canal expansion and promoting fusion. The Bridge Plate provides extended reconstruction options, with multiple length and width configurations for complex or multi-level procedures. The choice between these plates depends on the specific surgical technique and the anatomical requirements of the case.
Q2: How does the laminoplasty system prevent re-closure after surgery? A: The laminoplasty system uses plate fixation to maintain the opened lamina in its elevated position, effectively preventing re-closure and preserving the expanded canal volume. The rigid plate design provides stable fixation, resisting the natural tendency of the lamina to return to its original position. This is particularly important in the early postoperative period when the soft tissues are healing and the bone is remodeling. The prevention of re-closure significantly reduces the risk of restenosis and symptom recurrence, improving long-term clinical outcomes.
Q3: What are the recommended screw lengths for different cervical levels? A: The recommended screw length depends on the thickness of the cervical lamina at each level. In the mid-cervical region (C3–C6), the lamina is typically 5–7 mm thick, and screws of 5–9 mm length are generally appropriate. In the more caudal cervical levels (C7), where the lamina may be thicker, screws up to 11 mm may be required. We recommend using the trial molds (codes 90011501–90011503) intraoperatively to assess the appropriate plate size, and the self-tapping screws are available in 5 mm, 7 mm, 9 mm, and 11 mm lengths to accommodate this variation. Preoperative CT imaging can also assist in determining the appropriate screw length.
Q4: Are sterile-packaged options available for the plates and screws? A: Yes, both sterile and non-sterile configurations are available. Sterile configurations are indicated by the suffix "S" in the product code (e.g., GB4Z21S for sterile Open Door Plate-2). Sterile products are individually packaged and ready for immediate intraoperative use, simplifying OR preparation and reducing the risk of contamination. Non-sterile products require sterilization prior to use according to standard hospital protocols. Please specify your preference when placing an order.
Q5: What is the clinical advantage of pure titanium construction over other materials? A: Pure titanium offers several clinical advantages in cervical laminoplasty applications. First, it provides excellent biocompatibility with minimal tissue reaction, reducing the risk of inflammation or adhesion formation. Second, it is fully MRI-compatible, enabling clear postoperative imaging without artifacts that could obscure the surgical site. Third, the modulus of elasticity of pure titanium is closer to that of cortical bone than stainless steel, providing more physiological load transfer and reducing the risk of stress shielding. Finally, pure titanium has excellent corrosion resistance, maintaining its mechanical integrity throughout the healing and remodeling process.
Q6: What is the recommended surgical technique for using the trial molds? A: The trial molds (Type I: 8/10, 12/14, 16/18) are used intraoperatively to determine the appropriate plate size. The trial is placed in the laminoplasty opening, and the size that provides the best fit without excessive tension or compression is selected. The trial molds are color-coded for easy identification and come in three sizes covering all plate lengths (8–18 mm). After selecting the appropriate trial size, the corresponding plate is chosen, and the screws are placed through the plate holes into the lamina. The trial molds are reusable after proper cleaning and sterilization.
