Concomitant part/lot number: 508-00-004,lot a000007 was incorrect on the initial mdr.Should be: 508-00-004,lot 39465l13.Manufacturer narrative: the reason for this revision surgery was reported as the patient was a little short and needed to have a thicker poly.The length of in vivo service was almost 5 years.The healthcare professional indicated there was no delay in surgery and another suitable device was available for use.The revision surgery was completed as intended.Initial or prolonged hospitalization was required.The device was disposed of at the hospital and not made available to (b)(4) for examination.A review of the device history records showed no non-conforming material reports associated with this product.A review of the product complaint report history showed there have been 133 prior complaints reported against this part; summary of investigations: 1 fit, 1 locking mechanism damaged, 1 contaminants in blister/pouch, 1 broke/cracked/damaged, 1 surface finish, 1 revision surgery, 1 device failed, 56 dislocation, 1 wear/excessive wear, 6 pain, 31 infection, 9 trauma, 17 stability/poor joint, 1 fixation/poor implant to bone, 2 malpositioned, 2 dislocation, 1 other.This is the third complaint against this lot.The revision surgery is the result of the patient being a little short and needed to have a thicker poly.No other conditions relating to this event could be determined with confidence.There are no indications of a product or process issue affecting implant safety or effectiveness.
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