6
Synthes
TFN – Titanium Trochanteric Fixation Nail System
Technique Guide
In 1958, the AO formulated four basic principles, which have
become the guidelines for internal fixation.
8,9
Those prin -
ciples, as applied to the Titanium Trochanteric Fixation Nail
System, are:
Anatomic reduction
The Titanium Trochanteric Fixation Nail allows controlled
dynamic collapse and interfragmentary compression while
maintaining rotational control of the medial segment.
Stable fixation
The Trochanteric Fixation Nail System provides improved re-
sistance to varus collapse and rotational control of the medial
fracture segment versus single screw fixation (i.e., lag screws).
This results in superior life-to-cut-out versus single screw
fixation.
Preservation of blood supply
The instruments and implants in the Trochanteric Fixation
Nail System permit a more percutaneous technique and less
tissue stripping than current treatment methods. An in-
tramedullary approach shows decreased blood loss versus
plate fixation of subtrochanteric fractures.
10,11
Use of the
11.0 mm helical blade results in reduced bone removal com-
pared to a hip screw.
Early, active mobilization
The shortened moment arm associated with an intra -
medullary approach permits early mobilization. In conjunc-
tion with AO principles, the Trochanteric Fixation Nail System
creates an environment for bone healing and rapid rehabili-
tation. For stable fractures, early postoperative weightbear-
ing is possible.
AO Principles
8
M.E. Müller, M. Allgöwer, R. Schneider, and H. Willenegger (1991), Manual of
Internal Fixation, 3rd Edition. Berlin: Springer
9
Rüedi TP, Buckley RE, Moran CG (2007) AO Principles of Fracture Management.
2nd expanded ed. 2002. Stuttgart, New York: Thieme
10
M. Baumgaertner, S. Curtin, D. Lindskog (1998). Intramedullary Versus
Extramedullary Fixation for the Treatment of Intertrochanteric Hip Fractures.
Clinical Orthopaedics and Related Research, 348, 87–94
11
D. Hardy, P. Descamps, P. Krallis, et al (1998). Use of an Intramedullary Hip-Screw
Compared with a Compression Hip-Screw with a Plate for Intertrochanteric
Femoral Fractures. The Journal of Bone and Joint Surgery, 80-A(5), 618–630
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