MAINTAINED COMPRESSION
WITHOUT EXTERNAL FIXATION? NAILED IT.
THE PROOF IS IN THE SCIENCE
Maintained Active Compression
1400
The DynaNail® TTC Fusion System is the ONLY
fusion approach that offers the compression
performance of an external fixator inside
an intramedullary nail.
ACHIEVE:
6 mm of post-operative
ACTIVE compression
1200
Tibial
Compression
Slot
device and my implant of choice for hindfoot
800
arthrodeses. No other hindfoot fusion device
600
allows for intra-operative compression and
VersaNail
400
accounts for post-operative bone resorption
®
Panta Nail by maintaining active compression. It’s
Phoenix ™ Nail amazing to ‘see’ the DynaNail at work!”
200
0
0
1
2
3
4
5
6
7
Titanium
Outer Body
Data represents loss of compression as a function of bone resorption in synthetic bone.
Until now, external fixators were the only devices capable of maintaining
compression during bone healing. Existing IM nails only provide
intra-operative compression and will lose 90% of their compression
when just 1 mm of bone resorption occurs.
Internal NiTiNOL
Compressive
Element
Slotted
Calcaneal
Screw Holes
• Maintains active
compression throughout
the healing process
As the proven tibiotalocalcaneal fusion
system, DynaNail may be indicated as YOUR
first choice to treat high-risk patients with
complex pathologies:
The DynaNail maintains up to 6 mm of post-operative compression in
response to bone resorption or settling, similar to an external fixator. 4,5
•
•
•
•
•
Immediate Dynamization
Finite Element Model
of Stresses During Weight-Bearing
WATCH THE COMPRESSIVE ELEMENT IN ACTION
6 Weeks Post-Surgery
100
Immediate Post-Surgery
– Samuel Adams, MD
Duke University, Durham, NC
Resorption (mm)
Featuring an innovative
internal superelastic NiTiNOL
Compressive Element
• Automatically adapts
and responds to bone
resorption or settling
TrueLok (External Fixator)
™
— PLUS —
6 mm of intra-operative
manual compression
“The DynaNail is an unrivaled orthopaedic
1000
Tibia
Device
83%
78%
80
67%
60
40
33%
17%
20
0
Pseudoelastic
Titanium
22%
>4 >4
4.00 4.00
3.75 3.75
3.50 3.50
3.25 3.25
3.00 3.00
2.75 2.75
2.50 2.50
2.25 2.25
2.00 2.00
1.75 1.75
1.50 1.50
1.25 1.25
1.00 1.00
< 1 < 1
CFRP
Intramedullary Nail Type
Static IM nails will stress shield the bone, transferring
less than 20% of forces during weight-bearing.
Compressive Element is fully stretched
and PA Screw is located distal in the
Nail Body slot indicating 6 mm of
post-operative compression available.
Compressive Element has fully
recovered, as indicated by the
proximal position of the PA
screw in the Nail Body slot. 3
Images courtesy of Dr. Thomas SanGiovanni, UHZ Sports Medicine Institute, Coral Gables, FL
Charcot Neuroarthropathy
Failed Total Ankle Replacements
Nonunions from Prior Arthrodesis
Diabetics and Smokers
Large Bony Defects
Unlike static intramedullary nails with
reported nonunion rates as high as 50%,
the DynaNail has proven clinical success. 1
• Kreulen C, Lian E, Giza E. Technique
for Use of Trabecular Metal Spacers
in Tibiotalocalcaneal Arthrodesis with
Large Bony Defects. Foot Ankle Int, 2017;
38(1): 96-106.
• Latt LD, Dupont KM, Smith KE. Revision
Tibiotalocalcaneal Arthrodesis with a
Pseudoelastic Intramedullary Nail - A Case
Study. Foot Ankle Spec; 2017; 10(1): 75-81.
• Hsu AR, Ellington JK, Adams SB, Jr.
Tibiotalocalcaneal Arthrodesis Using
a NiTiNOL Intramedullary Hindfoot Nail.
Foot Ankle Spec 2015; 8(5): 389-96.
The axial compliance of DynaNail’s Compressive Element
allows DynaNail to transfer almost 70% of forces across
the bone during weight-bearing. 5
DynaNail
Static Titanium Nail
4- Yakacki CM, Gall K, Dirschl DR, Pacaccio DJ. Pseudoelastic intramedullary nailing for tibio-talo-calcaneal
1- Data on File, MedShape, 2017.
arthrodesis. Expert Rev Med Devices 2011; 8(2): 159-66.
2- Kildow BJ, Gross CE, Adams SB, Parekh SG. Measurement of NiTiNOL Recovery Distance Using
Pseudoelastic Intramedullary Nail in Tibiotalocalcaneal Arthrodesis. Foot Ankle Spec 2016; 9(6): 494-499. 5- Anderson RT, Pacaccio DJ, Yakacki CM, Carpenter RD. Finite element analysis of a pseudoelastic
compression-generating intramedullary ankle arthrodesis nail. J Mech Beh Biomed Mat, 2016; 62: 83-92.
3- Hsu AR, Ellington JK, Adams SB, Jr. Tibiotalocalcaneal Arthrodesis Using a NiTiNOL Intramedullary
Hindfoot Nail. Foot Ankle Spec 2015; 8(5): 389-96.
• Kildow BJ, Gross CE, Adams SB, Parekh SG.
Measurement of NiTiNOL Recovery Distance
Using Pseudoelastic Intramedullary Nail in
Tibiotalocalcaneal Arthrodesis. Foot Ankle
Spec 2016; 9(6): 494-499.