Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: A total of consecutive patients with unstable trochanteric fractures of the femur were enrolled in the study. View PDF. Save to Library.
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INTERTAN provides significantly greater fracture compression and reduced femoral shortening than a helical blade cephalomedullary nail. The benefits of the TRIGEN INTERTAN system — lower risk of implant failure and non-union, reduced postoperative pain, faster time to fracture union, and a proven high return to pre-fracture status — can help you achieve better outcomes more efficiently.
Bone and Joint Outcome Whitepaper. Shortening of the femoral neck following peritrochanteric fracture. The aim of this study was to describe the results using this device for the treatment of stable and unstable intertrochanteric fractures.
Biomechanical evaluation of interlocking lag screw design in intramedullary nailing of unstable pertrochanteric fractures. J Orthop Trauma. Fixation and intraoperative compression of a peritrochanteric hip fracture year-old female, three-part peritrochanteric hip fracture.
Active linear compression helps unload the lateral wall and restore the proximal femur. This makes medial migration and the Z-effect nearly impossible. Rueger Johannes; Moore Chris. The trapezoidal shape of the nail places more material at the lateral side of the implant where tensile forces are typically the strongest.
In addition, the nail's trapezoidal profile also provides enhanced anatomical fit and added rotational stability in the proximal femoral metaphysis similar to that offered by conventional hip stems.
What is an Integrated Interlocking Screw configuration and how will it help my patients? The integrated interlocking screws of the INTERTAN system increase stability and resistance to both intra and post-operative fracture rotation about the implant by providing two points of fixation within the femoral neck and head. This directly reduces rotational instability and eliminates the possibility of implant failure due to Z-Effect.
The INTERTAN system incorporates aspects of both devices by providing both single and dual integrated lag screws for the treatment of most major fracture patterns. Z-Effect 6 is an unfortunate by-product of most intramedullary nails that utilize two screws placed up into the femoral neck and head. Typically, the superior screw is of smaller diameter than the inferior and bears a disproportionate amount of load during weight bearing.
Excessive varus forces placed on the smaller screw at the lateral cortex cause it to toggle and either back out or migrate through the femoral head into the acetabulum. The larger inferior screw is neither keyed in rotation nor locked in place, and it too will either back out or migrate medially. The resultant Z-Effect where the two screws move in opposite directions is one mode of failure for the conventional two screw reconstruction device. The INTERTAN nail turns that construct upside down and integrates the two screws so that they act as one device to bear all load, enact all compression and prevent excessive medial or lateral migration thus negating the Z-Effect.
The clothespin distal tip of the INTERTAN short nail reduces the overall cross-sectional stiffness of the implant to minimize the risk of iatrogenic fracture during insertion, to ease the actual process of nail insertion and to offer enhanced rotational stability within the proximal femoral canal.
This has the advantage of lessening point stresses about the distal tip of the nail and reducing the possibility of fracture due to a stress riser at that location.
I have been using a single screw IM device for the last 20 years and have yet to have one cut out. Do I have to use the integrated screws? Absolutely not. Our designing surgeons feel that rotational instability is a major contributing factor to that failure rate and propose the INTERTAN nail as the solution to this dilemma. The problem lies in the fact that even implants that are keyed to prevent rotation can still experience rotation of the fragments about the axis of the lag screw.
Placement of a secondary point of fixation into the femoral neck and head reduces the chances of rotation but adds the secondary concern of Z-Effect.
Watch video of head rotations with a conventional single lag screw device. Mechanical testing of the two screw construct was stopped at , cycles with no evidence of implant cut out, further reinforcing the INTERTAN nail philosophy. References 1. Functional recovery after fracture of the hip. J Bone Joint Surg A.
Hip fracture in seniors: A call for health system reform. Rueger J, Moore C. White Paper: Shortening of the Femoral Neck. White Paper Screw Comparison. Case Study: Textbook. Case Study: Young Patient. Surgical Video. Education and Evidence website.
Certain marks Reg. US Pat. All Trademarks acknowledged This information intended for U. Search Search site:. Why does the short nail have a clothespin distal tip? Watch video of head rotations with a conventional single lag screw device The INTERTAN nail solves that problem by integrating two screws so that they function as one unit to prevent rotation and excessive screw migration.
For additional questions, please contact your local sales representative. Want more information? Textbook Case Study- 83 YOF with a Peritrochanteric Hip Fracture Fixation and intraoperative compression of a peritrochanteric hip fracture year-old female, three-part peritrochanteric hip fracture. Case Study- 48 YOM with a Peritrochanteric Hip Fracture Cephalomedullary nailing and intraoperative compression of a peritrochanteric hip fracture year-old male, injured in a fall causing a two-part peritrochanteric hip fracture.
Trapezoidal nail shape Small proximal diameter of the nail Clothes pin distal tip Less rigid than conventional devices Reduces the incidence of anterior thigh pain Reduces chance for secondary femoral shaft fractures.
TRIGEN INTERTAN NAIL
INTERTAN provides significantly greater fracture compression and reduced femoral shortening than a helical blade cephalomedullary nail. The benefits of the TRIGEN INTERTAN system — lower risk of implant failure and non-union, reduced postoperative pain, faster time to fracture union, and a proven high return to pre-fracture status — can help you achieve better outcomes more efficiently. Bone and Joint Outcome Whitepaper. Shortening of the femoral neck following peritrochanteric fracture.
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