Expandable Vertebral Body Replacement
Material defects – caused by tumours, fractures or infections – place great strain on the implants being inserted for reconstruction because of the need to resect weight‑bearing structures. The requirements for a stable structure for vertebral body replacement implants are adequate support for the cortical bone and reliable mechanics of the vertebral body replacement implant itself. With POSEIDON® ST the risk of subsidence is minimised by inferior and superior endplates that have the largest area possible, which also ensure the rotational stability of the implant.1 The reliable mechanics prevent dislocation of the implant caused by the decrease in stress in the endplates.
1An Ex Vivo Biomechanical Study Murat Pekmezci, MD, *Erik McDonald, BS, *Abbey Kennedy, MD, *Russell Dedini, MD, *Trigg McClellan, MD, *Christopher Ames, MD, † and Vedat Deviren, MD *, „Can A Novel Rectangular Footplate Provide Higher Resistance to Subsidence Than Circular Footplates?“, SPINE Volume 37, Number 19, pp E1177–E1181 ©2012, Lippincott Williams & Wilkins
Benefits:
- Big endplates made of ST (Structural Titanium)
- Slim base body with a diameter of only 16 mm
- Free choice of approach
- Easy to use
Product Specific Advantages:
Secure Construction
- Large overlapping heights between the base bodies
- Fixed connection between the endplates and the base body
- Locking of the expansion mechanism
- Narrow base body with a diameter of only 16 mm
Highly Modular Design
- Free choice of approach by attaching endplates in 30° increments
- Stepless distraction, heights of 18 – 89 mm
- Optimal reconstruction of the natural spinal anatomy
Sophisticated endplate Design
- Greatest possible bone–implant interface to support the cortical bone
- Teeth for high primary stability and secure prevention of dislocation
- Large selection of straight and angled endplates for individual restoration of the sagittal alignment
Open macroporous titanium Structure
- Resembles natural cancellous architecture
- Enables both growing-on and growing-in of bone
- *Only applies for the endplates of POSEIDON® ST
SIGNUS Modular Solution
- Can be optimally combined with the DIPLOMAT® or MONOPOLY™ screw-rod systems
- Additional application of bone graft material (e.g. KAINOS® +) possible
About SIGNUS
SIGNUS – the Sign for Spine: Passionate! Dynamic! Worldwide!
Innovative high-end implants made in Germany: For more than 25 years, SIGNUS has been the experienced specialist for comprehensive solutions in the surgical spine care sector. Founded in 1994 in Germany’s Lower Franconian city of Alzenau by Susanne and Uwe Siedler, our family-owned company currently has staff of approx. 80 at sites in Germany and Australia. SIGNUS offers the comprehensive product range of cervical spine to SIG sacroiliac joints, which are predominately manufactured at the nearby production site of ProConMedizintechnik. In addition to Europe (CE) and the USA (FDA), we sell our certified implants throughout the world on every continent. Target-oriented further development of the products in connection with the continuous exchange with the users as well as international further education and hospitalisation programs make SIGNUS a reliable global partner.
The entire SIGNUS Portfolio with detailed information and descriptions are available for you online at www.signus.com