Proximal femoral bionic nail was jointly developed on the basis of the original patent of “triangle stable structure” by Academican Zhang Yingze and the theory of “leverage-fulcrum reconstruction” proposed by Professor Zhang Dianying. It indicate for Low and extended subtrochanteric fractures, Ipsilateral trochanteric fractures, proximal femoral multilateral fractures, and pathological fractures.
Double Medical Proximal Femoral Bionic Nail was jointly developed on the basis of the original patent of “triangle stable structure” by Academican Zhang Yingze and the theory of “leverage-fulcrum reconstruction” proposed by Professor Zhang Dianying.
"Leverage-fulcrum reconstruction" theory
The anatomy of the normal human hip joint is similar to a lever system. The fulcrum is located near the center of the femoral head, the lever arm of the medial compressive group is shorter, and the lever arm of the lateral tensile group is longer. Therefore, the hip joint can bear a greater weight and perform various actions.
The purpose of the operation is to establish a new lever system through the internal fixation system to replace the original lever system until the fracture is healed.
The postoperative stability of fracture depends on the type of fixation, and has no relationship with the types of the fracture.
The fulcrum reconstruction position of new internal fixation system is more closer to the anatomical and physiological fulcrum, the more stable the postoperative fracture will be.
Nails:
130° CCD angle provide more options for different anatomy
Medial-lateral angle of 5° allows insertion at the tip of the greater trochanter.
Lateral flat cut design for easier insertion and lower pressure on the lateral wall.
Smaller proximal diameter for protection of soft tissue.
Distal long groove cutting disperse stress to prevent fractures around the nail.
Anterior arch fits to the femoral anatomy
Large Compression Screw & Compression Screw
Unique combined compression locking screw: continuous pressurization to eliminate the "Z" effect.
The end of compression screw: fix the nail in the medial side of the medullary cavity to reduce the pressure of lateral wall.
Gear structure: controllable rotation during reducitno provides linear pressurization.
With 2 different CCD angles APFN could solve the fractures in the proximal femoral and femur shaft. One piece design spiral blade with bone cement hole facilitate the rehabilitation of bad bone customers.
With two different locking mechanism (standard and recon locking) UFN Universal Femoral Nail can help to solve the femoral shaft fractures as well as the Combined femoral shaft and neck fractures.
Anatomic design with two locking options in condylar area Distal Femoral Nail II facilitate distal femur's supracondylar, supra-diacondylar and diaphyseal femoral fractures.