A modified footplate for the Kerrison rongeur
Name
A Modified Footplate for the Kerrison Rongeur v2.pdf
Size
202.16 KB
Format
Adobe PDF
Checksum (MD5)
10e59389bd7cdb02a60da21e56739329
Author(s)
Mitha, Alim P.
Ahmad, Mohamed S.
Cohen, Sarah J.
Lieberman, Janet S.
Udengaard, Martin R.
Slocum, Alexander H.
Coumans, Jean-Valery C. E.
Date Issued
March 2010
Journal
Journal of Medical Devices
Publisher
American Society of Mechanical Engineers
Citation
Mitha, Alim P. et al. “A Modified Footplate for the Kerrison Rongeur.” Journal of Medical Devices 4.1 (2010): 014502.
Version
Author's final manuscript
Abstract
Use of the Kerrison rongeur for bone removal in spinal surgery is associated with dural tears and cerebrospinal fluid (CSF) leaks. We report a modification of the Kerrison rongeur footplate designed to reduce the risk of dural tears. A novel footplate was designed by incorporating the following parameters: (1) tapering the footplate to deflect soft tissue downward during positioning of the rongeur underneath the bone, and (2) making the footplate longer and wider than the cutting element to prevent soft tissue from entering into the cutting surface. Stereolithography models of the modified footplate were made and tested in a cadaver. A stainless steel modified footplate was then incorporated into an existing Kerrison rongeur as a working prototype, and tested in 20 laminectomy cases to clinically validate its design. The modified footplate prevented soft tissue from entering the cutting surface of the Kerrison rongeur in the manner intended by its design. No dural tears or CSF leaks were encountered in any instance. Potential soft tissue compression caused by an increase in footplate dimensions was not a significant issue in the rongeur size tested. This modification, however, might not be practical in rongeurs larger than 3 mm. The risk of dural tears and cerebrospinal fluid leaks in spinal surgery may be reduced by this footplate modification of the Kerrison rongeur. Soft tissue compression may limit the incorporation of this modification to rongeurs of 3 mm or smaller. The promising results warrant further tests with a wider range of sizes.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/1.4000594
