Orthopedic plates are not all used the same way. 

Depending on the type of fracture, bone stability, and the surgical objective, they can play three main roles: compression, neutralization, or bridging.

🔹 1. Compression function

Principle:

• The plate directly brings the bone fragments together, creating a compressive force at the fracture.
• Compression promotes primary healing by bone‑to‑bone contact.

Indications:

• Simple, transverse fractures.
• Situations where direct contact between fragments is possible.

Load sharing:

• The plate transfers little load; the bone bears most of the forces, the animal’s weight.
• Requires a sufficiently strong bone and a stable fracture to bear the load and allow healing.

Illustration :

🔹 2. Neutralization function

Principle:

• The plate does not bring fragments together with a compressive effect.
• It protects the screws and the fracture site from mechanical forces (bending, torsion, traction).
• It neutralizes constraints generated by movements or muscles.

Indications:

• Long oblique fractures where compression by the screw alone is not enough.
• When the veterinarian wants to protect the reduction already obtained.

Load sharing:

• The load is shared between the bone and the plate.
• The bone bears part of the forces, but the plate takes over in case of significant stresses.

Illustration :

🔹 3. Bridging function

Principle:

• The plate serves as a bridge between multiple or comminuted fragments.
• The fracture is not manipulated, which preserves vascularization and fragile bone fragments.

Indications:

• Comminuted or multiple fractures
• Fragile bones.
• Anatomical realignment required without compression

Load sharing:

• The plate bears most of the load, as the fragile or fragmented bone cannot bear the forces.
• Additional implants may be necessary to distribute the load (second plate or pin)

Illustration :

🔹 4. Comparative summary of functions