The difference between pressurized steel plate and locked steel plate Veterinary S.S Locking Screws:
1. The holes of the two are different:
(1) The pressurized steel plate is a pressurized hole for use.
(2) The locking steel plate is in the form of taper screw holes.
2. The hardness and toughness are different:
(1) The hardness and toughness of the pressurized steel plate are stronger than the latter, and the cost performance is high.
(2) The hardness and toughness of the locked steel plate are slightly weaker.
A locking plate is a fracture fixation device with locking threaded holes that become an (screw) angle fixation device when a screw with a threaded head is screwed in.
It can have locking and non-locking holes at the same time for different screws to be screwed in. Any steel plate that can be screwed into angle-fixed (stable) screws and bolts is essentially a locking steel plate.
The fixation of the steel plate does not rely on bone friction to achieve the connection, but completely relies on the interlocking structure of the steel plate itself.
A certain gap can be left between the plate and the surface of the bone, which eliminates the adverse effect of the plate and the bone under heavy pressure, and greatly improves the blood supply and the growth and recovery of the periosteum.
The main biomechanical difference from traditional plates is that the latter relies on friction at the bone-plate interface to complete the compression of the bone by the plate.
The locking screw is a self-tapping screw, which does not require tapping or bone drill. There is no pressure between the plate and the cortical bone, and no pressure is generated on the periosteum, thereby protecting the blood supply of the periosteum.
In terms of surgical technique, it can meet the requirements of minimally invasive operation, and can well protect the blood supply of the fractured part, so no bone grafting operation is required; the internal fixation bracket is elastically fixed, and in the presence of load, there is stress stimulation between the fracture fragments, This stimulation facilitates callus formation and facilitates fracture healing.
Locking the plate makes the combination of the bone and the plate firmer and makes the limb more stable after reduction.
Locking plates were first used in spine and maxillofacial surgery 20 years ago to stabilize fractures while reducing extensive dissection and damage to soft tissue.