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Surgical Technique Occipito-Cervico-Thoracic System

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OASYS Surgical Technique System Overview The OASYS Occipito-Cervico-Thoracic System was developed to provide the surgeon with versatility for the treatment of pathologies of the occipitocervical junction, and the posterior cervical and upper thoracic spine. The modular system consists of hooks, polyaxial screws and rods as well as plates and bone screws. A variety of occiput plates and connectors complement the product line. Occipital Fixation Options — Midline Occiput Plate, Small — Midline Occiput Plate, Medium — Midline Occiput Plate, Large — Midline Occiput Plate, Large Long — Midline...

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Surgical Technique Table of Contents System Overview . . . . . . . . . . . . . . . . . . . . . 2 Implant Overview . . . . . . . . . . . . . . . . . . . . 4 Surgical Procedure . . . . . . . . . . . . . . . . . . . 11 Polyaxial Screw Placement . . . . . . . . . . . 11 Rod Placement . . . . . . . . . . . . . . . . . . . . 14 Blocker Insertion . . . . . . . . . . . . . . . . . . 16 Transverse Connection . . . . . . . . . . . . . 18 Offset & Rod to Rod Connectors . . . . . 20 Hook Placement . . . . . . . . . . . . . . . . . . . 21 Transition Rod . . . . . . . . . . . . . . . . . . . . 22...

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Surgical Technique Implant Overview Polyaxial Screws One of the key features of the Biased Angle Polyaxial Screw is the offset angle of the screw head, which allows for combined divergent screw angulation of 110° (or 55° in one direction). The high degree of angulation promotes screw placement at an optimal anatomic position, helping to simplify the surgical procedure by minimizing the need for rod contouring due to linear placement of the screw heads. There are five types of polyaxial screws available in the OASYS System. (See complete screw listing on page 35-37). The standard Biased...

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OASYS Surgical Technique The Non-Biased Angle Polyaxial Screws are available in diameters of 3.5mm, 4.0mm and 4.5mm. The 3.5mm and 4.0mm screws are 10 to 20mm in length in 2mm increments while the 4.5mm screws are 20 to 52mm in length in 4mm increments. The Non-Biased Angle Polyaxial Screws offer up to 30° of angulation in each direction or 60° conical. These screws can be used in instances where the surgeon does not need the angulation offered with the Biased Angle Screws. A combined color approach has been used to identify the screw type and diameter. The tulip heads of the Non-Biased...

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Surgical Technique Hooks A variety of laminar Hooks are available to better match the individual patient’s anatomy. Standard hooks are available in four throat heights: 3.5, 5.0, 6.5 and 8.0mm. Right and left offset hooks are also available for both right and left application. Part # Hook, Standard, 3.5mm Hook, Standard Short, 5.0mm Hook, Standard, 6.5mm Hook, Standard Tall, 8.0mm Hook, Offset Right Hook, Offset Left Hook, Standard Tall, 8.0mm Hook, Standard Short, 5.0mm Hook, Offset Right Rods A variety of Rod offerings are available to provide intraoperative solutions. For added...

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Surgical Technique Occipital Fixation The OASYS System offers a midline occiput plate option as well as bilateral occiput plates to better match individual patient anatomy. Part # Description 48551040 130° Occiput Plate 48551041L 130° Pre-contoured Occiput Plate, Left 48551041R 130° Pre-contoured Occiput Plate, Right 48551043L 100° Pre-contoured Occiput Plate, Left 48551043R 100° Pre-contoured Occiput Plate, Right Midline Occiput Plate, Small Midline Occiput Plate, Medium Midline Occiput Plate, Large Midline Occiput Plate, Large Long Midline Occiput Plate, Mini Midline...

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OASYS Surgical Technique Connectors Several types of Connectors are available in the OASYS System. Transverse Connector The Transverse Connector is designed for added torsional rigidity of a bilateral rod construct. The clip-on design features a very low profile and does not add significantly to the height of the construct. The transverse bar is available in 40, 60, and 80mm lengths. The bar of the transverse connector can be cut so that the length can be adjusted to better match individual patient anatomy. Part # Description Cross Connector Plate In cases where screws are...

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Surgical Technique Rod-to-Rod Connector The Rod-to-Rod Connector facilitates connection of the 3.5mm diameter rod to a spine construct using: 3.5, 4.5, 5.5, or 6.0mm diameter rods. Parallel Rod-to-Rod Connectors 3.5mm to 3.5mm Parallel Rod-to-Rod Connector 3.5mm to 4.5mm Parallel Rod-to-Rod Connector 3.5mm to 5.5mm Parallel Rod-to-Rod Connector 3.5mm to 6.0mm Parallel Rod-to-Rod Connector 3.5mm to 3.5mm Axial Connector 3.5mm to 4.5mm Axial Connector 3.5mm to 5.5mm Axial Connector 3.5mm to 6.0mm Axial Connector Axial Connector 48551084, 48551085, 48551086, 48551087 Saddle Connector The...

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Surgical Technique Transition Rod The OASYS Transition Rod provides an additional option for spanning the cervico-thoracic junction. Transition Rods are available to connect the following systems: • OASYS and Xia • OASYS and Xia 4.5 • OASYS and SR90D Transition Rods are offered in two different rod composition options, Titanium Alloy and Vitallium for added stiffness. Each rod is 600mm long. Refer to the Surgical Technique for Xia, Xia 4.5, and/or SR90D for instructions on usage of the larger diameter of the Transition Rod. Titanium Alloy 3.5mm-4.5mm Transition Rod Vitallium 3.5mm-4.5mm...

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Surgical Technique Surgical Procedure Preoperative Planning Use the appropriate imaging techniques to outline the patient’s osseous anatomy and to determine the proper size and type of instrumentation to be used. Identify the components to be used for the assembly. Keep in mind that changes to the final configuration may become necessary based on intraoperative findings. Patient Positioning and Exposure The patient is placed in the prone position with head and neck held securely in optimum alignment. A standard midline incision is performed at the appropriate levels. The exposure may be...

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OASYS®
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