A Modified Posterior Approach Preserves Femoral Head Oxgenation During Hip Resurfacing
Steffen RT, De Smet KA, Murray DW, Gill HS 2010 Mar 22
Nuffield Department of Orthopaedics, Rheumatology and
Musculoskeletal Sciences, University of Oxford, Nuffield
Orthopaedic Centre, Oxford, UK.
In 11 patients, the oxygenation was measured in the superolateral quadrant of the femoral head during resurfacing with a modified posterior approach, designed to preserve the blood supply, using a gas-sensitive electrode. These were compared with measures from 10 patients in whom the standard posterior approach was used. The modified
approach patients maintained a significantly (P < .005) higher amount of relative oxygenation after the approach,
78% (standard deviation [SD], 45%) vs 38% (SD, 26%), and acetabular component implantation, 74% (SD, 56%) vs 20% (SD, 28%). The modified posterior approach, unlike the standard extended approach, does not significantly compromise the blood supply to the head; and we recommend this approach be considered for hip resurfacing.