6.5/7.3mm Cannulated Screw Instrument Set

6.5/7.3mm Cannulated Screw Instrument Set

The 6.5/7.3mm hollow screw instrument set is the primary tool specification for orthopedic internal fixation. Its core advantage lies in achieving an optimal balance between “sufficient fixation strength” and “broad anatomical adaptability,” specifically designed for treating fractures in weight-bearing areas of the lower extremities and certain upper extremities.

Advantages:

1. Perfect balance of strength and versatility

The 6.5/7.3mm diameter provides robust core mechanical strength, sufficient to stabilize fractures in areas such as the tibial plateau, ankle joint, and proximal humerus. Yet its size remains compact enough to accommodate complex anatomical structures like the olecranon process, distal radius, and posterior pelvic column, making it one of the most versatile screw sizes in the operating room.

2. Enabling Precise, Minimally Invasive Fixation

Hollow Design: All screws can be implanted along precisely pre-positioned K-wires, ensuring millimeter-accurate screw placement—critical for precise reduction and fixation of intra-articular fractures.

Minimally Invasive Placement: Under C-arm fluoroscopy guidance, the guidewire is percutaneously inserted through a small incision to complete screw fixation. This approach maximizes preservation of blood supply to the fracture fragments, aligning with modern principles of biologically sound fixation in orthopedics.

3. Delivering Reliable Compression and Stability

Partial-Thread Design (Common): When used as a tension screw, the threads grip only the distal bone fragment. During insertion, it applies continuous axial compression to the fracture line, forcing bone fragments into close contact and significantly promoting healing.

Full-Thread Design: Can function as a positioning screw, maintaining anatomical distance between bone fragments and preventing excessive compression. Ideal for stabilizing fractures such as the tibiofibular syndesmosis.

Technical Specifications

Clinical Applications

1,Ankle Fractures: Medial/lateral malleolar fractures, posterior malleolar fractures, combined tibia-fibula fixation.

2,Tibial Plateau Fractures: Fixation of plateau edge splinter fractures.

3,Pelvic and Acetabular Fractures: Fixation of fractures involving the anterior column, posterior column, ischial ramus, etc.

4,Elbow Fractures: Olecranon process fractures, radial head fractures.

5,Spiral Shaft Fractures: Used as tension screws in combination with plates.

Conclusion

In summary, the value of the 4.0/4.5mm hollow screw instrument set lies in its role as an “all-purpose” precision fixation tool. It achieves precise implantation through its hollow design, delivers reliable strength via its appropriate diameter, and ensures surgical safety and efficiency through its professional instrument set. This makes it an indispensable standard configuration for managing the vast majority of lower limb and pelvic traumatic fractures.