(b)(4).Concomitant medical products: unknown shell ¿ unknown part and lot.Unknown head ¿ unknown part and lot.Unknown liner ¿ unknown part and lot.Therapy date: unknown.Reported event was unable to be confirmed due to limited information received from the customer.Review of x-rays provided shows patient has dislocation of the right hip along with malpositioning, lucency of the acetabular component and extensive heterotopic ossification which appears to bridge the joint space with possible bony fusion.Device history record (dhr) review was unable to be performed as the lot number of the device involved in the event is unknown.Root cause was unable to be determined as the necessary information to adequately investigate the reported event was not 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.Multiple mdr reports were filed for this event, please see associated reports: 0001822565-2018-05035, 0001822565-2018-05036, 0001822565-2018-05037.
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