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Surgical hip dislocation is commonly performed in orthopaedic surgery for several pathologies that often present risk of avascular necrosis (AVN) of femoral head. Observation of blood spilling out from a drill hole, performed in the head after dislocation, has been proposed as a predictive test for AVN. No data have been published about test reliability. Study's aim was to evaluate the correlation between 'bleeding sign' and AVN in surgical dislocation for elective disease and for acetabular fractures.

Can we predict femoral head vitality during surgical hip dislocation?