Down Biting Kerrison

Down Biting Kerrison

Down Biting Kerrison

The Down Biting Kerrison Rongeur is engineered to simplify reverse bone removal without compromising ergonomics or control. Its unique down-biting angle allows for precise “backward” bites without the need to contort your wrist, reposition around the patient, or press the horn into your palm. Available 8″ in both 40° and 90° configurations, this instrument is designed to maintain your natural hand position while providing direct access to posterior structures. Choose between thin or standard footplates, with bite widths ranging from 1mm to 4mm, to match your technique and exposure needs.

For added versatility, each model is available with or without an ejector, and is treated with our proprietary PVD (Black Coat) finish for enhanced durability, reduced glare, and smooth reprocessing. Precision-machined from surgical-grade materials, the Down Biting Kerrison is built to withstand the demands of complex spine procedures. For surgeons who demand comfort, accuracy, and control, especially in challenging angles, this is an instrument that earns its place in your primary tray.

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Description

Down Biting Kerrison

The Down Biting Kerrison Rongeur is purpose-built to solve a common ergonomic and functional challenge in spine surgery: the difficulty of taking reverse bites without awkward repositioning or hand fatigue. Traditional Kerrisons often require the surgeon to angle their wrist unnaturally or rotate their body around the patient to reach posterior structures, especially during decompressions. This down-biting design eliminates that need by naturally aligning with the anatomy, enabling smooth, efficient backward bites while maintaining a comfortable, neutral hand position.

In lumbar spine surgery, where exposure can be limited and the anatomy often requires working from multiple angles, especially around the lamina and facets—this Kerrison shines. Its ability to approach the bone from a reverse angle without the need to reposition the surgeon or compromise hand placement is particularly beneficial at deeper levels, such as L4–L5 or L5–S1, where traditional instruments may fall short. It allows for precise decompression around nerve roots and undercutting of facets with minimal disruption to surrounding tissues.

To accommodate varying preferences and surgical demands, the Down Biting Kerrison is available in both 40° and 90° angles, with a choice of thin or standard footplates. Bite widths range from 1mm to 4mm, providing the precision needed for fine bony work and the strength for more aggressive removal. Additionally, surgeons can choose models with or without an ejector, depending on preference for debris clearance during continuous use. Every detail is engineered to support speed, accuracy, and safety in high-stakes surgical environments.

Built from high-grade surgical materials and finished with our proprietary PVD (Black Coat) coating, this Kerrison offers superior durability, resistance to wear, and reduced glare under operating lights. The instrument’s balance, feel, and precision cutting action make it a natural extension of the surgeon’s hand. Trusted by spine specialists for its ergonomic design and unmatched utility, the Down Biting Kerrison is a must-have instrument for lumbar decompression and fusion procedures where control and efficiency matter most.

Additional information

Angle

40 degrees down, 90 degrees down

Style

Standard, Thin Footplate

Length

8"

Width

1mm, 2mm, 3mm, 4mm

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