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Screw fixation in the femoral head. Pull-out tests in cadavers
B F Iversen1, J Stürup, P Lyndrup
1Department of Orthopedics, Frederiksberg Hospital, Copenhagen, Denmark.
Acta Orthopaedica Scandinavica
|December 1, 1988
Abstract:
The aim of our study was to determine whether a subchondral or a capital position of the thread of the gliding screw provided the best fixation. A pull-out test was performed on pairs of femoral neck cadaver specimens. The capital position of the thread provided the best fixation in all the pairs. A correlation was found between bone mineral content of the femoral heads and the holding power of the screws in both positions.