PediatrOS™ FlexTack™

Growth steering in patients with varus/valgus misalignments

Since their introduction in 2013, PediatrOS™ FlexTack™ Hemi-Epiphysiodesis Implants have enjoyed an unbroken track record of success in correcting varus and valgus misalignments, making it an alternative to implants approved for conventional applications.

The trapezoidal design of the PediatrOS™ FlexTack™ staple is closely aligned to the anatomy of the femur and tibia. Cannulated legs allow precise placement using Kirschner wires. The anatomically shaped PediatrOS™ FlexTack™ has a flexible middle zone that deforms under the forces of the growth plate while ensuring stable implant position and constant anchoring power. By adapting to ever-changing anatomic conditions, the implant helps gently and precisely correct alignment issues in paediatric and adolescent patients.

Properties / technical data

  • First flexible, anatomically shaped titanium implant designed to correct axis misalignment
  • Minimally invasive surgical technique keeps sedation time short
  • Short fluoroscopy times – 35%* reduction over plate systems
  • Parallel insertion of two 1.6 mm K-wires through cannulated implant legs allows precise placement
  • Trapezoidal design provides ideal biomechanical orientation
  • Allows immediate weight-bearing
  • Zigzagged leg shape and flexible, bending middle zone help prevent implant migration
  • PediatrOS™ FlexTack™ corrects misalignments; PediatrOS™ RigidTack™ corrects leg length differences
  • Material: TiAI6V4 ELI
  • Available in 3 sizes: 20 mm (blue), 25 mm (green), 30 mm (purple)

*Vogt, B. et al., (2015), “FlexTack™ for Temporary Hemiepiphysiodesis – Simplified implantation, reduced fluoroscopy and faster correction compared to eight-Plate™” DKOU 2015 PO25-791


Staple implant for bone growth guidance in children by means of temporary hemi-epiphysiodesis to correct axis misalignment

  • of the knee (genu varum/valgum, genu recurvatum/antecurvatum)
  • of the hip (varus)
  • of the ankle (varus/valgus, plantar flexion)
  • of the elbow (varus/valgus)
  • of the wrist (varus/valgus)

Case studies

Click here for various case studies related to the PediatrOS™ FlexTack™. If you have any questions regarding individual treatment strategies or would like more information, please contact Customer Service.

Media library

Click here for current information on the PediatrOS™ FlexTack™. Please do not hesitate to contact Customer Service for additional information.


Click here for current literature on the PediatrOS™ FlexTack™ and RigidTack™.

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