Patient was undergoing a revision of a revision (no depuy product) on (b)(6) 2020 ( (b)(6) hospital) all components were removed (non depuy) and an attune revision system was being utilised.The attune femoral construct required posterior augments on both the medial and lateral posterior condyles.When attempting to connect the lateral 8mm (size 9) posterior augment, this augment would not seat / connect correctly - it would initially seat but when an attempt was made to tighten this augment down using the torque driver, the augment would lift showing a gap of approximately 1mm.A number of attempts were made to seat this augment by releasing the screw, re seating the augment and re fastening the screw.None worked.As an alternative size 9 x 8mm posterior augment was available, this was opened and when attaching to the femur, seated correctly.I have requested the faulty augment be decontaminated and kept in order for this to be looked at.
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