S4® Spinal System

Modular Spinal System

Trusted Experience
The unique slim profile technology of S4® blends the experience of more than ten years of clinical application and continuously updated technologies, making it a reliable posterior spinal fixation system for a vast range of indications. Since the official launch of the S4® Spinal System, the system has been used for more than 100.000 surgical procedures worldwide.


Modular Versatility 

The S4 is based on Aesculap’s proven and versatile platform technologies that are especially designed for the requirements and needs in spinal surgery. As a result, the system is individually configurable and adaptable to a comprehensive range of pathologies and approach techniques, giving you the benefit to work with one system. 


Cutting-Edge Dimensions 

The outstanding slim profile technology allows for an implant diameter of only 10.5 mm and a lean instrument design for true MIS skin incisions and effective instrument manipulation in tight anatomical spaces. 


Lean Surgical Workflow 

The contents of the individual implant and instrument modules are defined in a way that an intuitive and streamlined instrumentation can be supported throughout the whole hospital workflow.


  • Comprehensive modular spinal system with modules covering a broad range of indications and approaches.
  • Connectivity to the S4® Cervical System
  • Fracture Reduction Instrumentation (FRI) allows for correction of spinal deformities caused by trauma.
  • Reposition of severe Spondylolisthesis with the Spondylolisthesis Reduction
    Instrumentation (SRI) possible.
  • Fenestrated screws to achieve improved anchorage and stability within the bone,
    allowing to respond to a reduced bone quality.



  • Mono- and polyaxial pedicle screws in a variety of diameters and designs (solid,
    cannulated and fenestrated)
  • Rods in different designs for MIS and open approach
  • Connectors, including cross connectors and rod-to-rod connectors
  • Hooks


Instrument Modules

  • Fracture Reduction Instrumentation (FRI)
  • Spondylolisthesis Reduction Instrumentation (SRI)
  • Instruments for minimally invasive surgery (MIS)
  • Instruments for cement application


Intended Use
The S4 Spinal System implants are used for dorsal monosegmental and multisegmental
stabilization of the lumbar and thoracic spine.