DynaNail TTC Fusion Nail

DynaNail® TTC Fusion Nail - In Bone
DynaNail® TTC Fusion Nail
DynaNail® TTC Fusion Nail - In Bone
DynaNail® TTC Fusion Nail

DynaNail® TTC Fusion Nail

DynaNail Data

The DynaNail® TTC Fusion System is designed for use in tibiotalocalcaneal (TTC) fusion, or hindfoot fusion, procedures to address degenerative conditions, correct joint deformities and revise failed total ankle replacements or arthrodesis non-unions.

The DynaNail incorporates MedShape’s patented superelastic nickel titanium (NiTiNOL) technology that can respond and adapt to changes in the joints. Intra-operatively, the NiTiNOL Compressive Element is stretched into its activated state and fixed with screws. Post-surgery, the Compressive Element will maintain the target fusion bones in close apposition and under compression for up to 6 mm of bone resorption or settling, making the DynaNail the ultimate choice in internal compression nails.

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  • Documents
  • References

Dynanail Features

Maintained Compression Without External Fixation? Nailed It

The DynaNail® TTC Fusion System is the ONLY fusion approach that offers the compression performance of an external fixator inside an intramedullary nail.

  • Achieves 6 mm of post-operative compression PLUS 6 mm of intra-operative manual compression
  • Provides automatic dynamization upon weightbearing
  • Accompanied by the robust DynaFrame™ CF (Carbon Fiber) Deployment System
  • Available in multiple diameters and lengths – Offered in 220, 260 and 300 mm lengths for revision and bail out procedures

Demonstrated Elite Performance

The DynaNail can be indicated in hindfoot fusion procedures to treat high-risk patients with complex pathologies. This compression-sustaining fusion solution is also suitable with femoral head allografts and adjunctive fusion procedures such as triple arthrodesis.

Non-Unions from Prior Arthrodesis

Images Courtesy of:
Dan Latt, MD, Tucson, AZ

x-ray - arthrodesis non union

Large Bony Defects - Absent Talus

Images Courtesy of:
Tom SanGiovanni, MD, Coral Gables, FL

x-ray - large boney defects

Charcot Foot

Images Courtesy of:
Jeffrey Covell, MD, Danville, KY

x-ray - Diabetics-Smokers - Charcot Example.jpg

Failed Total Ankle Replacement

Images Courtesy of:
Mark Conklin, Golden, CO

x-ray - failed total ankle

The Proof Is In The Science

Maintained Active Compression

Benchtop testing shows that the DynaNail can maintain compression for up to 6 mm of bone resorption or settling, similar to an external fixator. In contrast, existing static IM nails, including other internal compression nails, lose 90% of their compression when just 1 mm of bone resorption occurs.1,2

Compression chart

Immediate Dynamization

Thanks to the axial compliance of its NiTiNOL Compressive Element, DynaNail is able to transfer almost 70% of forces to the bone during weight-bearing; whereas, static competitor nails are only able to transfer 20% of walking forces.3


DynaNail Animation


DynaNail TTC Patient Testimonial - Dave Backer


DynaNail TTC Patient Testimonial - David Johnston


DynaNail TTC Fusion Surgical Video with Dr. Steve Herbst

  1. Yakacki CM, et al. Expert Rev Med Devices, 2011. 8(2): 159-166
  2. Hsu, AR, Ellington JK, Adams, SB. Foot & Ankle Specialist, 2015. Oct; 8(5): 389-396.
  3. Anderson RT, Yakacki CM, et al. Journal of Mechanical Beavior Biomedicad Materials, 2016. Sept; 62:83-92.