1
10
100
1,000
10,000
1.8 (405 lbs.)
1.6 (360 lbs.)
1.4 (315 lbs.)
1.2 (270 lbs.)
1.0 (225 lbs.)
0.8 (180 lbs.)
0.6 (135 lbs.)
0.4 (90 lbs.)
0.2 (45 lbs.)
0
100,000
TFN
Greater resistance to cut-out
The helical blade of the Titanium Trochanteric Fixation Nail
(TFN) System provides increased resistance to cut-out.
1
The innovative helical blade design was proven to provide
“superior resistance to migration and subsequent cut-out
failure.”
2
Fixation life curves: number of load cycles to cut-out at
varying loads.
When tested at a load of 1.2 kN, the lag screw cut-out
before 1,000 cycles whereas the helical blade cut-out after
10,000 cycles.
Biomechanical Features
1
M.B. Sommers, M. Bottlang, C. Roth, H. Hall, J.C. Krieg (2004) A laboratory
model to evaluate cutout resistance of implants for pertrochanteric fracture
fixation. Journal of Orthopaedic Trauma, Vol 18(6):361–368
2
lbid.
3
lbid.
L
o
a
d
[
k
N
(
lb
s)
]
Proximal femur fixation device cut-out
3
(Unstable pertrochanteric fracture using simulated cancellous bone)
IM Device
with Lag Screw
Cycles to cut-out
TFN –Titanium Trochanteric Fixation Nail System
Technique Guide
Synthes
3
