02/12/2010
AO Technical Commission Approved

3.5 mm Low Profile Cortical Screw

When plates and screws are chosen for fracture treatment, soft tissue and/or tendon irritation is a potential clinical problem. Screw head prominence can be especially problematic in subcutaneous locations such as the clavicle, the olecranon, or the tibia; or when tendons pass over the implant as observed in the distal radius.

To address this issue, a 3.5 mm Low Profile Cortical Screw has been developed, which is compatible with all Synthes 3.5 mm plates. Design changes in the new screw consist of alterations to the head hight, screw head outer diameter, and geometry of the underside of the screw (Fig 1). These changes alter the location of the screws gaugeline, allowing the 3.5 mm Low Profile Cortical Screw to be seated lower in a given plate hole (Fig 2). The new screws are available in both stainless steel and titanium and have a T15 StarDrive or Hex Drive recess.

These changes alter the location of the screws gaugeline, allowing the 3.5 mm Low Profile Cortical Screw to be seated lower in a given plate hole. The new screws are available in both stainless steel and titanium and have a T15 StarDrive or Hex Drive recess.

Mechanical testing has shown that the 3.5 mm Low Profile Cortical Screw demonstrates failure torque, bending strength, and driving torque that are mechanically comparable to that of standard 3.5 mm cortex screws.

The 3.5 mm Low Profile Cortical Screw is intended for the fixation of fractures, osteotomies, and nonunions of the clavicle, scapula, humerus, olecranon, radius, ulna, pelvis, femur, tibia, fibula, and calcaneous.

The new screw is an additional treatment option for surgeons with concerns about soft tissue and/or tendon irritation when using plate and screw fixation. It also addresses the clinical need to prevent or minimize additional surgical procedures to remove implants that become too uncomfortable or pose a health risk for the patient.

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Due to varying countries’ legal and regulatory approval requirements, consult the appropriate local product labeling for approved intended use of the products described on this website. All devices on this website are approved by the AO Technical Commission. For logistical reasons, these devices may not be available in all countries worldwide at the date of publication. 


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