Innovative Animal Products offers a comprehensive line of veterinary orthopedic supplies and devices related to External Fracture Fixation, Internal Fracture Fixation, and Joint Stabilization.

The Original Interlocking Nail System™

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Video: Intro Why Interlocking Nail?, 1 minute

Original Interlocking Nail Introduction, 7 minutes

Technique of locating the most distal hole in the nail, 1 minute

Technique of using Bolts and Femur Fracture Example 1, 14 minutes

Technique Femur Fracture Example PART 2, 25 minutes

Technique Humeral Fracture Repair, 4 minutes

APEF Acrylic Pin External Fixation


Interlocking Nails are a refinement of the original Kuntscher Nail. An Interlocking Nail is basically an intramedullary pin secured in position by proximal and distal transfixing screws which engage the bone to the nail to provide axial bending and torsional stability. This procedure, in man, generally involves power reaming and insertion by closed technique on a distraction table under fluoroscopic control. The Dueland Interlocking Nail System (IN System), however, needs no extra specialized equipment.


In 1989, R. Tass Dueland, DVM (University of Wisconsin) and associates began investigations to apply this human fracture modality to veterinary orthopedics. These investigations consisted of both mechanical and clinical trials to define the nail and instrumentation requirements. This research provided encouraging clinical results and resulted in the development of the IN System.

In comminuted long bone fractures, the IN System is useful due to the mechanical advantage of medullary implantation (i.e. mechanical axis) and prevention of collapse of the fracture by the interlocking effect. Ancillary cerclage wires reduce periosteal stripping and minimize disturbance to blood supply compared to plating.

The IN System was developed specifically for the veterinary surgeon to provide a practical surgical procedure requiring minimal ancillary equipment.

* No power reaming required to insert the nail
* Precise screw hole targeting without fluoroscopy
* Compatible with AO cortical screws (no added screw inventory) or IN Solid Cross Locking Bolts

In man, fractures of the femur, tibia and humerus are routinely and successfully treated with Interlocking Nails (IN).

The advantages of this proven human fracture modality are now available for veterinary orthopedics.  It is fast, economical and strong.

The IN System is a complete set of surgical instrumentation for implanting interlocking nails in small or younger large animals. Innovative Animal, LLC, Minnesota, USA, specializes in orthopedic fracture fixation devices for small and younger large animals. We offer innovative products at an affordable price.

The Original Interlocking Nail Systems ™

The Model 11-6mm/8mm System is indicated for more extensive shaft fractures, allowing 2 screws to be used in minimal proximal and distal bone. The components of this particular option accommodate the 6mm diameter nail with a 2.7mm size hole and the 8mm diameter nail with a 3.5mm screw hole. Both the 6mm and 8mm nail have hole spacing of 11.1mm. Nails are available in 6 different lengths with either 3 or 4 holes.

The model 11-4.0mm/4.7mm is indicated for fracture cases of smaller animals. The components of this particular system accommodate the 4.0mm/4.7mm diameter nail with 2.0 mm size holes with an inter-hole spacing of 11.1mm. The 4.0mm/4.7mm nails are available in 7 different lengths with either 3 or 4 screw holes.

Ask about our lease program

We have a special rental program for those who want to use the Interlocking Nail System on a case by case basis. Please call 5O7-289-O761 for additional information. You will need to determin the nail size for the procedure, see Interlocking Nail Template link above to print a transparancy to size with x-ray. If you use our lease program and then decide to purchase an Interlocking Nail System, the price of the new system will be reduced.

Interlocking Nail Template

Interlocking Nail Procedures

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