1
10
100
1,000
10,000
100,000
25°
20°
15°
10°
5°
0
TFN
TFN
80°
70°
60°
50°
40°
30°
20°
10°
0
1
10
100
1,000
10,000
100,000
4
Synthes
TFN – Titanium Trochanteric Fixation Nail System
Technique Guide
Biomechanical Features
Improved resistance to varus collapse
4
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
5
lbid.
Improved resistance to femoral head rotation
V
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s
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Cycles
V
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s
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ta
ti
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Varus rotation of femoral head at 1000 N
4
(Unstable pertrochanteric fracture using simulated cancellous bone)
Cycles
IM Device
with Lag Screw
IM Device
with Lag Screw
Rotation of femoral head around implant axis at 1000 N
5
(Unstable pertrochanteric fracture using simulated cancellous bone)