08/06/2004
AO Technical Commission Approved

USS Pedicle Screws

Dual-Opening Universal Spine System (USS)

The Dual-Opening USS is a stand-alone system designed to treat deformities in the thoracic, lumbar, and sacral spine using the technique of segmental translation. It incorporates the dual-opening features of the Small Stature USS system with screws and hooks applied to a 6.0 mm rod.

The new hook designs for pedicle, lamina (small, medium, and large), thoracic lamina, angled lamina, tall body lamina (small, medium, and large), and transverse process (left and right) are available for standard side loading and for front loading when using a transverse bar.

The screws feature the dual-opening design and a dual core thread design which includes two core diameters within each screw to improve bony purchase: a cortical thread at the screw bend, and a cancellous thread at the screw tip. The available screw diameters are 4.2, 5.2, 6.2, 7.0, 8.0, and 9.0 mm, with lengths from 25 mm to 80 mm.

Other new implants are collars (standard and grooved to match transverse bars), a 12-point nut, and new transverse bars in lengths of 15, 20, and 25 mm. All implants are offered in both Titanium and Stainless Steel. The Dual-Opening USS features several new instruments: Hook Holding Forceps, Rod Introduction Pliers (Persuader), Distraction Clip, Socket Wrench, Holding Sleeve for Socket Wrench, and Collar Positioner..


Rod Introduction Pliers (Persuader)

The improved Rod Introduction Pliers feature a sleeve holder that can be disassembled and has better cleaning properties.


Sleeve Positioner

The improved Sleeve Positioner features a sleeve holder that can be disassembled and has better cleaning properties.


Hook Positioner for USS Dual Opening Hooks

The new Hook Positioner for USS Dual Opening Hooks has improved the fit of both lamina and pedicle hooks.


Click'X: 5.5mm Screw

The screw is a line extension the existing Click'X screw range and fully compatible. It is available in lengths between 30mm and 65mm.

Clinical case

The Dual-Opening USS is a stand-alone system designed to treat deformities in the thoracic, lumbar, and sacral spine using the technique of segmental translation. It incorporates the dual-opening features of the Small Stature USS system with screws and hooks applied to a 6.0 mm rod.

The new hook designs for pedicle, lamina (small, medium, and large), thoracic lamina, angled lamina, tall body lamina (small, medium, and large), and transverse process (left and right) are available for standard side loading and for front loading when using a transverse bar.

16-year-old woman with progressive kyphoscoliosis (scoliotic double curve: preoperative thoracic 78 and lumbar 68; postoperative 38 and 30); posterior instrumentation with pedicle screws in L1 to L5 and pedicle, lamina and transverse process hooks in T2 to T10 after anterior release.

Hazards and labeling

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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"approved by AO Technical Commission" and "approved by AO Foundation"

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