Types of Orthopedic Bone Screw
Standard screws (cortex screws or cancellous Bone screws) are utilized with traditional plates.
With the LCP, four distinct kinds of the screw can be utilized:
- Standard cortex screw
- The standard cancellous bone screw
- Sell Self-tapping head screw
- Self-boring and self-tapping locking head screw
Standard sinks are suggested the accompanying circumstances at the point when a screw should be embedded at an edge to stay away from the joint entrance. To apply pressure, either as a loose screw for interfragmentary strength or for unconventional screw addition in the dynamic pressure half of the blend gap of the LCP to accomplish hub pressure.
As a decrease help to attract the break sections to the plate, for starter adjustment of the plate on the bone before the use of locking head screws (LHS).
Self-tapping LHS is utilized for biocritical inclusion when rakish soundness is required, particularly in osteoporotic bones.
Self-boring, self-tapping LHS are predominantly utilized noncortical in the diaphyseal fragment of bone in cases with high bone quality. They are additionally used when fixing periprosthetic fracture s.
Order of Bone screw addition
The request for bone screw inclusion relies upon the proposed capacity of the plate and ought to be chosen ideally during preoperative arranging. For the most part, the screw at the proximal finish of the plate is embedded first. The break is then decreased on the off chance that it has not as of now been done and the screw at the distal finish of the plate is next embedded. The nature of the fracture, the decrease is checked and, if agreeable, the rest of the screws are integrated by the preoperative arrangement.
On the off chance that both standard screw and LHS are utilized in the equivalent LCP IN prescribed to the standard screws. On the off chance that the plate has been at first deep down with LHS, and the ensuing addition of standard screws is required, the LHS must be loosened before the standard is embedded.
Since the inserts are embedded without the introduction of the bone or delicate tissue, it is critical to choose a situation for the plate that will abstain from harming any imperative structure, for example, a significant vessel or nerve during its addition.
Contingent upon the embed chose and the area and example of the break, it is frequently essential to form the plate.
This is particularly required when utilizing traditional plates, to maintain a strategic distance from MapReduction of the break. Since the break site isn’t uncovered in MIPO, plate forming using layouts is beyond the realm of imagination. The moulding along these lines should be done preoperatively, as a rule with the guide of plastic bone models or X-rays. The moulded plate is then sanitized for the activity.
Fine modifications of the plate shape might be done intraoperatively if vital. An option is to utilize unique anatomically preshaped plates if accessible.