Journal of Bone and Joint Surgery - British Volume, Vol 87-B, Issue 11,
1468-1474.
doi: 10.1302/0301-620X.87B11.16780
Copyright © 2005 by British Editorial Society of Bone and Joint Surgery
The effect of hip resurfacing on oxygen concentration in the femoral head
R. T. Steffen, MRCS, Clinical Research Fellow1;
S. R. Smith, DPhil, Post-Doctoral Research Scientist2;
J. P. G. Urban, PhD, Senior ARC Research Fellow2;
P. McLardy-Smith, FRCS, Consultant Orthopaedic Surgeon1;
D. J. Beard, DPhil, University Research Lecturer1;
H. S. Gill, DPhil, University Research Lecturer1; and
D. W. Murray, MD, FRCS(Orth), Professor of Orthopaedic Surgery1
1 Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK.
2 Department of Physiology, University of Oxford, Parks Road, Oxford OX1 3PT, UK.
Correspondence should be sent to Dr H. S. Gill; e-mail: richie.gill{at}ndos.ox.ac.uk
We inserted an electrode up the femoral neck into the femoral head of ten patients undergoing a metal-on-metal hip resurfacing arthroplasty through a posterior surgical approach and measured the oxygen concentration during the operation. In every patient the blood flow was compromised during surgery, but the extent varied. In three patients, the oxygen concentration was zero at the end of the procedure. The surgical approach caused a mean 60% drop (p < 0.005) in oxygen concentration while component insertion led to a further 20% drop (p < 0.04). The oxygen concentration did not improve significantly on wound closure. This study demonstrates that during hip resurfacing arthroplasty, patients experience some compromise to their femoral head blood supply and some have complete disruption.
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