When affixing the head to the stem prior to implantation, the surgeon chose to use bone cement on the threads.Due to the bone cement setting up the surgical technician had difficulty threading the head onto the stem.The surgeon also attempted to thread the head down and due to amount of force being applied the head implant broke.The surgery was delayed for over 60 minutes while another head implant was obtained.There was no reported adverse event reported for the patient due to the surgical delay.
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