4.5mm Locking Plate Reconstruction Specification
- Plates available holes are 10, 11, 12, 13, 14, 15 and 16.
- Plate has combi holes and round holes. Combi holes allow fixation with locking screws in the threaded section and cortex screws in the dynamic compression unit section for compression.
- The shaft holes accept 5 mm locking screws in the threaded portion or 4.5 mm cortical screws or 5 mm Locking cancellous screws in the compression portion.
- 4.5mm Locking Plate Reconstruction allow implant placement to address the individual fracture pattern.
- The symmetrical shape of the plate holes enables compression to be achieved in both directions.
- The hole spacing in the plate is regular. Plate positioning is thus not restricted by the presence of a mid-section. This is of particular advantage in comminuted or segmental fractures.
- Limited-contact surface reduces bone-to-plate contact and helps to preserve the periosteal blood supply.
- Choice of different lengths of plate eliminates the need to cut plates.
- Pre-contoured plate to match anatomical shape.
- Available in both Titanium and Stainless steel.
- locking plate increases construct stability, decreases risk of screw back-out and subsequent loss of reduction. It also reduces the need for precise anatomic plate contouring and minimizes the risk of stripped screw holes.
- A complete Instruments Set is available for 4.5 mm Locking Plate Reconstruction. General Instruments are available for this plate such as Plate Bending Press, Plate Holding Forceps, Plate Bending Pliers, Bone Holding Forceps, Bone Elevators, Bone Cutter, Bone Nibbler, Depth Gauge, Sleeve, Screw Driver, Trocar Sleeve etc.
4.5mm Locking Plate Reconstruction Uses
4.5mm Locking Plate Reconstruction is used to fix the Pelvic, Clavicle and Calcaneal fractures.
Advantages of using locking plate for 4.5mm Locking Plate Reconstruction
- 4.5mm Locking Plate Reconstruction is a locking plate so it does not have to precisely contact the underlying bone in all areas. When screws are tightened, they “lock” to the threaded screw holes of the plate, stabilizing the segments without pulling the bone to the plate. Locking screws make it impossible for screw insertion to alter the reduction. Non locking plate/screw systems require a precise adaptation of the plate to the underlying bone. Without this close contact, tightening of the screws will pull the bone segments toward the plate, resulting in loss of reduction and possibly the occlusal relationship
- Locking plate/screw systems do not disrupt the underlying cortical bone perfusion as much as conventional plates, which compress the plate to the cortical bone.
- Screws are unlikely to loosen from the plate. Similarly, if a bone graft is screwed to the plate, a locking head screw will not loosen during the phase of graft incorporation and healing. The possible advantage to this property of a locking plate/screw system is decreased risk of inflammatory complications due to hardware loosening.
- Locking plate/screw systems have been shown to provide more stable fixation than conventional non locking plate/screw systems.
Locking Screw Technology
The heads of the locking screws contain male threads while the holes in the plates contain female threads. This allows the screw head to be threaded into the 4.5mm Locking Plate Reconstruction hole, locking the screw into the plate. This technical innovation provides the ability to create a fixed angle construct while using familiar plating techniques.
Locking Plate Technology
By using locking screws in a bone plate, a fixed-angle construct is created. In osteopenic bone or fractures with multiple fragments, secure bone purchase with conventional screws may be compromised. Locking screws do not rely on bone/plate compression to resist patient load, but function similarly to multiple small angled blade plates. In osteopenic bone or comminuted fractures, the ability to lock screws into a fixed-angle construct is imperative.
By combining locking screw holes with compression screw slots in the shaft, the plate can be used as both a locking device and a fracture compression device. If compression is desired, it must be achieved first by inserting the standard screws in the compression screw slots before inserting any locking screws.
4.5mm Locking Plate Reconstruction Contraindications
Contraindications may be qualified or total, and need to be taken into consideration when evaluating the prognosis in each case. Alternative management techniques may need to be considered under the following conditions:
- Acute or chronic infections, either local or systemic.
- Local or systemic accurate or chronic inflammation.
- Serve muscular, nervous or vascular disease endangering the affected area.
- Defective bone structures, which would impede adequate anchoring of the implant.
- All associated diseases which could endanger the function and success of the implant.
Warnings and Precautionary for 4.5mm Locking Plate Reconstruction
Before using 4.5mm Locking Plate Reconstruction, the surgeon and ancillary staff should study the safety information in these instructions, as well as any product-specific information in the product description, surgical procedures and/or brochures.
Plates are made from medical grade materials and are designed, constructed and produced with utmost care. These quality assure best working results provided they are used in the proper manner. Therefore, the following instructions for use and safety recommendations must be observed.
Improper use of Plates can lead to damage to the tissue, premature wear, destruction of the instruments and injury to the operator, patients or other persons.
It is vital for the operating surgeon to take an active role in the medical management of their patients. The surgeon should thoroughly understand all aspects of the surgical procedure and instruments including their limitations. Care in appropriate selection and proper use of surgical instruments is the responsibility of the surgeon and the surgical team. Adequate surgical training should be completed before use of this plate.
Factors which could impair the success of the operation:
- Allergies to implanted materials.
- Localized bone tumours.
- Osteoporosis or osteomalacia.
- System disease and metabolic disturbances.
- Alcohol and drug abuse.
- Physical activities involving excessive shocks, whereby the implant is exposed to blows and/or excessive loading.
- Patients who are mentally unable to understand and comply with the doctor’s instructions.
- Poor general health.
Possible Adverse Effects
The following adverse effects are the most common resulting from implantation:
- Loosening of the 4.5mm Locking Plate Reconstruction, which may result from cyclic loading of the fixation site and/or tissue reaction of the implant.
- Early and late infection.
- Further bone fracture resulting from unusual stress or weakened bone substance.
- Temporary or chronic neural damage resulting from pressure or hematomata.
- Wound hematomas and delayed wound healing.
- Vascular disease including venal thrombosis, pulmonary embolism and cardiac arrest.
- Heterotopic ossification.
- Pain and discomfort due to presence of the Implants.
- Mechanical failure of the implant, including bending, loosening or breakage.
- Migration of implant resulting in injury.
Preoperative Planning for 4.5mm Locking Plate Reconstruction
The operating planning is carried out following a thorough clinical evaluation of the patient, Also, x-rays must be taken to allow a clear indication of the bony anatomy and associated deformities. At the time of the operation, the corresponding implantation instruments in addition to a complete set of 4.5mm Locking Plate Reconstruction must be available.
The clinician should discuss with the patient the possible risks and complications associated with the use of Implants. It is important to determine pre-operatively whether the patient is allergic to any of the implant materials. Also, the patient needs to be informed that the performance of the device cannot be guaranteed as complications can affect the life expectancy of the device.