LEANDER® Cervical vertebral body replacement

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The German family company Human Tech Spine is based in Baden Württemberg and develops, manufactures and sells high-quality and innovative spinal systems worldwide. Our traditional corporate group was founded in 1948 and is a reliable employer for around 500 employees. It has a production area of around 15,000 m², and our entire product portfolio is manufactured there. Our high-tech production facilities as well as the most advanced, environmentally friendly production and logistics processes guarantee high-quality and on-time production and delivery processes. The independent medical division...

The LEANDER® vertebral body replacement is an implant system that is suitable for long-term use in anterior stabilization of the cervical spine; it can replace one or more vertebral bodies in patients whose general skeletal growth has ceased. The system is intended for surgical treatment of tumorous, inflammatory and traumatic diseases as well as injuries of the cervical spine (C3 to C7) leading to instability in the area of anterior support or compression of neural structures that make sanitation of infections necessary. The LEANDER® system is intended for use with an additional ventral fixation...

Specific advantages of our products Cervical vertebral body replacement Four outstanding product properties 1 2 3 4 Pyramidal tooth profile for primary fixation to the bony structure of the vertebral body endplates Generous contact surface of the end plates Completely reversible Blasted and etched surfaces of the end plates designed to support direct growth of the bone onto the implant HumanTech Spine

Surgical technique Enabling access and removal of the vertebral body Insertion of the distraction pins I Insertion of the distraction pins II After access has been prepared, a partial or complete corpectomy is performed with the appropriate instruments, depending on the anatomy and the clinical picture. Careful preparation is necessary to ensure the insertion and correct positioning of the implant. The correct length of the distraction pins is determined from the X-ray image before insertion. The distraction pin is inserted from below into the tip of the pindriver until it is locked in place...

Surgical technique Placement of the vertebral body spreader and spreading of defect Determination of the implant size up to size 30 assembly of trial implant Determination of the implant size up to size 30 insertion of the trial implant The Retrival Body Retractor is applied from above to the protruding ends of the distraction pins. Then the defect is carefully expanded by turning the adjusting wheel counterclockwise (1) on the vertebral body spreader, thus showing the defect up to the posterior margin. With the help of the trial implants (Leander Trial), an implant size of up to 30 mm can be...

Surgical technique Determination of the implant larger than size 30 Determination of the end plate size – Installation of the trial implants for the end plates Determination of the end plate size The implant size to be selected for a size of 30 mm or greater can be determined under radiographic control with the aid of the measuring compass. To do this, the adjusting wheel on the side of the measuring compass must first be opened by turning it counterclockwise. The posterior arms of the compass are then pressed together manually and held. Now the measuring compass is positioned in the defect,...

Surgical technique Removal of the implant from the sterile packaging – removal of the outer blister from the transport box Removal of the implant from the sterile packaging – removal of the inner blister from the outer blister Removal of the implant from the sterile packaging removal of the skin insert from the inner blister The implants are provided in sterile packaging. In order to install the implant, the packaging of the implant body (VBR-C sterile) corresponding to the trial implant must be selected. Then the flap of the transport box that is closed with the label is opened and the blister...

Surgical technique Removal of the implant from the sterile packaging - removal of the implant from the skin insert Connection of the implant body with the insertion tool The inferior insert is detached from the skin insert (1) and the implant component is removed from the skin insert (2). In order to connect the implant body to the insertion instrument Leander Inserter, the bar of the insertion instrument must be positioned in the groove of the implant body. The insertion instrument is fixed to the implant body by screwing the inner part of the insertion instrument Tristan Inserter B clockwise...

Surgical technique Compression of the vertebral bodies Removal of the vertebral body spreader and distraction pins Subsequent installation of the insertion tool Final construction After inserting the implant in its final position, it must be ensured that the pyramidal teeth penetrate into the upper and lower surfaces of the adjacent vertebral bodies by compressing the adjacent vertebral bodies with the vertebral body spreader. The vertebral body spreader and the distraction pins are then removed. To do this, the pindriver is pushed onto the respective distraction pin as far as it will go. It...

Figure showing relationship between trial implant and implant (e.g. with a LEANDER VBR-C 22mm as an example) Leander Trial

LEANDER®-implant body Item no.

LEANDER®-end plates LEANDER®-plate screw Item no. HumanTech Spine

LEANDER® instruments trial implants Body / measuring compass Trial implant end plates