Dynamic hip screw versus DHS blade: A biomechanical comparison of the fixation achieved by each implant in bone

F. O'Neill; F. Condon; T. McGloughlin; B. Lenehan; J. C. Coffey; M. Walsh

doi:10.1302/0301-620X.93B5.25539

Dynamic hip screw versus DHS blade: A biomechanical comparison of the fixation achieved by each implant in bone

F. O'Neill, F. Condon, T. McGloughlin, B. Lenehan, J. C. Coffey, M. Walsh

Research output: Contribution to journal › Article › peer-review

Abstract

We biomechanically investigated whether the standard dynamic hip screw (DHS) or the DHS blade achieves better fixation in bone with regard to resistance to pushout, pullout and torsional stability. The experiments were undertaken in an artificial bone substrate in the form of polyurethane foam blocks with predefined mechanical properties. Pushout tests were also repeated in cadaveric femoral heads. The results showed that the DHS blade outperformed the DHS with regard to the two most important characteristics of implant fixation, namely resistance to pushout and rotational stability. We concluded that the DHS blade was the superior implant in this study.

Original language	English
Pages (from-to)	616-621
Number of pages	6
Journal	Journal of Bone and Joint Surgery - Series B
Volume	93 B
Issue number	5
DOIs	https://doi.org/10.1302/0301-620X.93B5.25539
Publication status	Published - May 2011

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abstract = "We biomechanically investigated whether the standard dynamic hip screw (DHS) or the DHS blade achieves better fixation in bone with regard to resistance to pushout, pullout and torsional stability. The experiments were undertaken in an artificial bone substrate in the form of polyurethane foam blocks with predefined mechanical properties. Pushout tests were also repeated in cadaveric femoral heads. The results showed that the DHS blade outperformed the DHS with regard to the two most important characteristics of implant fixation, namely resistance to pushout and rotational stability. We concluded that the DHS blade was the superior implant in this study.",

author = "F. O'Neill and F. Condon and T. McGloughlin and B. Lenehan and Coffey, {J. C.} and M. Walsh",

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AU - Lenehan, B.

AU - Coffey, J. C.

AU - Walsh, M.

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AB - We biomechanically investigated whether the standard dynamic hip screw (DHS) or the DHS blade achieves better fixation in bone with regard to resistance to pushout, pullout and torsional stability. The experiments were undertaken in an artificial bone substrate in the form of polyurethane foam blocks with predefined mechanical properties. Pushout tests were also repeated in cadaveric femoral heads. The results showed that the DHS blade outperformed the DHS with regard to the two most important characteristics of implant fixation, namely resistance to pushout and rotational stability. We concluded that the DHS blade was the superior implant in this study.

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Dynamic hip screw versus DHS blade: A biomechanical comparison of the fixation achieved by each implant in bone

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