The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing: A CADAVER STUDY

E. T. Davis; P. Gallie; K. Macgroarty; J. P. Waddell; E. Schemitsch

doi:10.1302/0301-620X.89B4.17893

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The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing

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The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing

Davis ET, Gallie P, Macgroarty K, Waddell JP, Schemitsch E. The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing. J Bone Joint Surg Br. 2007;89-B(4):557-560. doi:10.1302/0301-620X.89B4.17893

Davis, E. T., et al. “The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing.” The Journal of Bone & Joint Surgery British Volume, vol. 89-B, no. 4, 2007, pp. 557-560., https://doi.org/10.1302/0301-620X.89B4.17893

Davis, E. T., Gallie, P., Macgroarty, K., Waddell, J. P., & Schemitsch, E. (2007). The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing. The Journal of Bone & Joint Surgery British Volume, 89-B(4), 557-560. https://doi.org/10.1302/0301-620X.89B4.17893

Davis, E. T., Gallie, P., Macgroarty, K., Waddell, J. P. and Schemitsch, E. (2007) “The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing.” The Journal of Bone & Joint Surgery British Volume, 89-B(4), pp. 557-560. Available at: https://doi.org/10.1302/0301-620X.89B4.17893

Davis, E. T., P. Gallie, K. Macgroarty, J. P. Waddell, and E. Schemitsch. “The accuracy of image-free computer navigation in the placement of the femoral component of the Birmingham Hip Resurfacing.” The Journal of Bone & Joint Surgery British Volume 89-B, no. 4 (2007): 557-560. https://doi.org/10.1302/0301-620X.89B4.17893

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Abstract

A cadaver study using six pairs of lower limbs was conducted to investigate the accuracy of computer navigation and standard instrumentation for the placement of the Birmingham Hip Resurfacing femoral component. The aim was to place all the femoral components with a stem-shaft angle of 135°.

The mean stem-shaft angle obtained in the standard instrumentation group was 127.7° (120° to 132°), compared with 133.3° (131° to 139°) in the computer navigation group (p = 0.03). The scatter obtained with computer-assisted navigation was approximately half that found using the conventional jig.

Computer navigation was more accurate and more consistent in its placement of the femoral component than standard instrumentation. We suggest that image-free computer-assisted navigation may have an application in aligning the femoral component during hip resurfacing.

Correspondence should be sent to Mr E. T. Davis at The Royal Orthopaedic Hospital, Bristol Road South, Northfield, Birmingham B31 2AP, UK; e-mail: eddavis@doctors.org.uk

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