(b)(4).
Reported event was confirmed by review of surgical notes.
Patient underwent a revision due to significant pain.
No infection noted.
There was difficulty in breaking the cold weld attachment and separating the head from the trunnion.
There was blood loss of 1200 ml without transfusion.
Review of the device history records for reported components identified no deviations or anomalies that could contribute to the reported event.
A definitive root cause cannot be determined with the information provided.
If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.
Zimmer biomet will continue to monitor for trends.
(b)(4).
Concomitant medical products: m2a-magnum taper sleeve # item 139268 lot 585000.
Echo por fmrl nc stem # item 192012 lot 061550.
M2a-magnum mod hd sz 52mm, item # 157452, lot 814460.
Multiple mdr reports were filed for this event, please see associated reports: 0001825034-2018-10113, 0001825034-2018-10114.
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It was reported that the patient underwent revision surgery approximately seven years post initial surgery due to significant pain and failed conservative measures.
During the revision, it was noted there was abundant scar tissue requiring excision, and difficulty breaking the cold weld.
Attempts have been made and additional information on the reported event is unavailable.
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