On 7/25/2017 integra investigation completed.Manufacture date unknown.Method: failure analysis, device history evaluation.Results: failure analysis - evaluation was unable to conclusively verify customer complaint.The sterile field post got manipulated by untrained personal.The table fixation bolt and threads got messed up by welding nuts to the post.The whole field post need to get replaced and charged to the customer.Device history evaluation - is - a device modified by end user; is not - a suspected manufacturing defect; is- misuse by customer.Dhr could not be reviewed as device not marked with lot number.The most likely reason for no lot marking is device was manufactured in (b)(4) prior to 2003 which is prior to requirement for lot traceability.Conclusion: failure analysis to identify root cause determined device modified \ damaged by end user.
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