Thoraco-lumbar pedicle screw A27 series

polyaxialmonoaxialcannulated

Product Overview
5.5 mm Dual Thread pedicle screws are developed for reliable fixation in thoracolumbar spinal procedures. The double-lead thread geometry optimizes purchase and insertion speed while maintaining resistance to back-out. Compatible with standard 5.5 mm rod systems and offered in multiple head and tip configurations to address various surgical indications.

Mono Axial Screw Dual Thread
Monoaxial screws serve as rigid anchors, commonly used in lumbar constructs and at thoracic apices in deformity correction. The fixed-shank design provides low profile and strong vertebral body control, facilitating derotation maneuvers.

Mono Axial Screw - Codes / Sizes

• Code No.: A2701 — Ø 4.5mm — Size: 20mm to 60mm (5mm variation)
• Code No.: A2701 — Ø 5.5mm — Size: 30mm to 70mm (5mm variation)
• Code No.: A2701 — Ø 6.5mm — Size: 30mm to 70mm (5mm variation)
• Code No.: A2701 — Ø 7.5mm — Size: 30mm to 100mm (5mm variation)

Poly Axial Screw Dual Thread
Polyaxial screws offer multi-directional head angulation, enabling trajectory freedom at anatomically constrained levels while allowing alignment of screw head to rod during closure. They are the most broadly used screw type across thoracic and lumbar levels.

Poly Axial Screw - Codes / Sizes

• Code No.: A2702 — Ø 4.5mm — Size: 20mm to 70mm (5mm variation)
• Code No.: A2702 — Ø 5.5mm — Size: 30mm to 70mm (5mm variation)
• Code No.: A2702 — Ø 6.5mm — Size: 30mm to 70mm (5mm variation)
• Code No.: A2702 — Ø 7.5mm — Size: 30mm to 100mm (5mm variation)

UNI Planar Screw Dual Thread
The UNI Planar design combines controlled vertebral body fixation with limited planar motion of the head to facilitate rod alignment while retaining rotational control—suitable for complex scoliotic corrections.

UNI Planar Screw - Codes / Sizes

• Code No.: A2744 — Ø 4.5mm — Size: 20mm to 60mm (5mm variation)
• Code No.: A2744 — Ø 5.5mm — Size: 30mm to 60mm (5mm variation)
• Code No.: A2744 — Ø 6.5mm — Size: 30mm to 60mm (5mm variation)

Mono Reduction Screw Dual Thread
Dual-lead thread enables rapid insertion and reliable anchorage. Reduction-specific geometry and color-coded sizing support intraoperative efficiency. Saddle locking block with serrated interface increases rod-to-screw contact and reduces cross-threading risk.

Mono Reduction Screw - Codes / Sizes

• Code No.: A2703 — Ø 4.5mm — Size: 18mm to 20mm; 20mm to 50mm (5mm variation)
• Code No.: A2703 — Ø 5.5mm — Size: 30mm to 60mm (5mm variation)
• Code No.: A2703 — Ø 6.5mm — Size: 30mm to 60mm (5mm variation)
• Code No.: A2703 — Ø 7.5mm — Size: 30mm to 60mm (5mm variation)

Poly Reduction / Cannulated / Fenestrated Options
Fenestrated and cannulated Dual Thread screws reduce implant mass and permit controlled PMMA delivery into the vertebral body. Cannulation allows cement injection through the screw; fenestrations direct cement at the distal tip. Thread profile features a finer upper thread to resist back-out and a coarser lower thread for pedicle purchase. Tips are optimized for self-tapping and self-centering insertion.

Fenestrated / Cannulated Dual Thread - Codes / Sizes

• Code No.: A2749 — Ø 5.5mm — Size: 25mm to 55mm (5mm variation)
• Code No.: A2749 — Ø 6.5mm — Size: 25mm to 55mm (5mm variation)
• Code No.: A2749 — Ø 7.5mm — Size: 25mm to 55mm (5mm variation)
• Code No.: A2750 — Ø 5.5mm — Size: 30mm to 55mm (5mm variation)
• Code No.: A2750 — Ø 6.5mm — Size: 30mm to 55mm (5mm variation)
• Code No.: A2750 — Ø 7.5mm — Size: 30mm to 55mm (5mm variation)

Features / Benefits

• Cephalad/caudal plane angulations — secure rod mating despite screw trajectory.
• Medial/lateral rigidity — enables vertebral body derotation and control similar to monoaxial anchors.

Applications

• Correction of deformities and treatment of trauma.
• Immobilization of spinal segments (T1–L5) to assist fusion by maintaining bony apposition.
• Multiple variants (monoaxial, polyaxial, uniplanar, reduction, cannulated, fenestrated) to match surgical technique and pathology.

Technical specifications

• Series: Dual Thread pedicle screw system compatible with 5.5 mm rod systems.
• Types available: Monoaxial, Polyaxial, Uni Planar, Mono Reduction, Poly Reduction, Cannulated/Fenestrated variants.
• Thread design: Double-lead/double-thread — finer upper thread to resist backing out, coarser lower thread for pedicle engagement.
• Screw tip: Self-tapping and self-centering (fenestrated variants permit PMMA delivery).
• Polyaxial maximum angulation: up to 50° for angular accommodation during rod placement.
• Color-coding: diameter/length color-coding for intraoperative identification.
• Available diameters and size ranges: Ø 4.5 mm, 5.5 mm, 6.5 mm, 7.5 mm with specified length ranges in 5 mm increments (see listings above).
• Instrumentation: dedicated instrument sets for deformity correction and standard spine procedures; compatible reduction and set-screw designs with saddle locking blocks and serrated threads.