Cancellous Screws – Orthopedic Bone Fixation Implants
Cancellous Screws are orthopedic fixation implants designed primarily for securing bone fragments in areas containing cancellous, or spongy, bone. Their relatively coarse/deep threads are designed to obtain purchase in cancellous bone and provide stable fixation. Cancellous screws are commonly used in fracture fixation and may be used with plates, washers or other orthopedic fixation constructs depending on the surgical application.
Cancellous screws are available in different diameters, lengths, thread configurations and materials to meet the requirements of different orthopedic procedures. Cannulated cancellous screws have a central channel that allows placement over a guidewire, which can facilitate accurate positioning during surgery.
Key Features of Cancellous Screws
- Designed for fixation in cancellous/spongy bone
- Coarse thread profile for bone purchase
- Available in full-thread and partially threaded configurations
- Available as cannulated and non-cannulated designs
- Different diameters and lengths available
- Compatible with selected orthopedic plates and fixation systems
- Available with different head and drive configurations
- Can be supplied with washers for appropriate applications
- Manufactured from implant-grade materials according to product specifications
Types of Cancellous Screws
1. Fully Threaded Cancellous Screws
Fully threaded cancellous screws provide threaded engagement along the intended threaded portion and are commonly used for fixation in metaphyseal bone.
2. Partially Threaded Cancellous Screws
Partially threaded screws can be used as lag screws when the threaded portion is positioned appropriately beyond the fracture plane, allowing compression between bone fragments.
3. Cannulated Cancellous Screws
Cannulated cancellous screws are inserted over guidewires, which can help surgeons establish and maintain the desired screw trajectory. Examples include 7.0 mm and 7.3 mm cannulated screws in certain femoral-neck fixation techniques.
4. Cancellous Screws with Washers
Washers can be used in selected situations to help prevent screw-head penetration into relatively thin or osteoporotic cortical bone. Their use depends on the specific fixation construct and surgical technique.
Applications of Cancellous Screws
Cancellous screws are used in various orthopedic trauma and fracture-fixation procedures, including applications involving:
- Ankle and malleolar fractures
- Proximal tibia fractures
- Femoral neck fixation
- Metaphyseal fractures
- Epiphyseal and periarticular fractures
- Fracture fragments requiring interfragmentary compression
- Orthopedic plate fixation
- Reconstructive orthopedic procedures
The exact implant size, thread length, position and fixation technique are selected by the orthopedic surgeon according to the patient's anatomy, fracture pattern and fixation requirements.
Benefits of Cancellous Screws
Strong Cancellous Bone Purchase: Coarse threads are designed to engage cancellous bone effectively.
Reliable Fixation: Appropriate screw selection can provide stable fixation of bone fragments.
Multiple Configurations: Full-thread, partially threaded, cannulated and non-cannulated options can be selected according to the procedure.
Accurate Placement: Cannulated designs can be inserted over guidewires to assist with positioning.
Versatile Orthopedic Application: Cancellous screws can be used in various fracture-fixation constructs.
Cancellous Screw Manufacturer & Supplier in India
Looking for a reliable Cancellous Screw Manufacturer and Supplier in India? High-quality cancellous bone screws are available in different sizes, thread lengths, head designs and material options for orthopedic fixation applications.
Product specifications such as diameter, length, thread type, material, cannulation and finish should be selected according to the applicable surgical system and technical requirements.
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