Model Number N/A |
Device Problems
Mechanical Problem (1384); Device Dislodged or Dislocated (2923); Unintended Movement (3026)
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Patient Problem
Joint Dislocation (2374)
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Event Type
Injury
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Manufacturer Narrative
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(b)(4).Initial report.Report source, foreign - event occurred in (b)(6).The location of the medical device is currently unknown.The investigation is currently underway.Once the investigation has concluded, a follow-up mdr will be submitted.
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Event Description
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Title: bearing separation from the lateral wall of the tibial component is a risk of anterior dislocation of the mobile-bearing in oxford unicompartmental knee arthroplasty.Authors: takafumi hiranaka, yoshihito suda, tomoyuki kamenaga, takaaki fujishiro, motoki koide, akira saitoh, atsuki tanaka, akihiko arimoto, koji okamoto.On 24-jan-2022, a journal article was retrieved from the journal of arthroplasty (2022) that reported a study from (b)(6) that looked at whether bearing separation from the lateral wall of the tibial component is a risk of anterior dislocation of the mobile-bearing in oxford unicompartmental knee arthroplasty.The study retrospectively analysed twelve-one dislocations in twelve patients which included the incidence of separation, the direction and the recurrence of the dislocations, and their causes.The study reported that five of the twelve patients had separation.Of the total of 21 dislocations, 11 occurred in cases of separation (52%).Seven out of 11 anterior dislocations were found to have separation, whereas nine out of 13 posterior dislocations occurred without separation (p = 0.0237).Three out of five patients with separation had a recurrence of dislocation, and eventually, two underwent revision to fixed-bearing uka.Case seven: it was reported that a (b)(6) female patient experienced three dislocations which all occurred while she was standing up from a chair: revised bearing to +1 thickness; two closed reductions.
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Manufacturer Narrative
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(b)(4).This final report is being submitted to relay additional information.Complaint summary: product has not been returned for evaluation.The item and lot number have not been provided.X-rays or medical notes have not been provided.The investigation has been limited to the information provided.A historical search could not be performed as the item and lot number have not been provided.This device is used for treatment.Not enough information has been provided to determine if all implants are compatible.A dhr review or a review of recalls could not be performed as the item and lot number have not been provided.The likely condition of the device when it left zimmer biomet could not be determined as the item and lot number has not been provided.The root cause of the reported event cannot be determined with the information provided.No corrective action required at this time as the root cause of the reported event has not been determined.
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Event Description
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Title: bearing separation from the lateral wall of the tibial component is a risk of anterior dislocation of the mobile-bearing in oxford unicompartmental knee arthroplasty.Authors: takafumi hiranaka, yoshihito suda, tomoyuki kamenaga, takaaki fujishiro, motoki koide, akira saitoh, atsuki tanaka, akihiko arimoto, koji okamoto.On 24-jan-2022, a journal article was retrieved from the journal of arthroplasty (2022) that reported a study from japan that looked at whether bearing separation from the lateral wall of the tibial component is a risk of anterior dislocation of the mobile-bearing in oxford unicompartmental knee arthroplasty.The study retrospectively analysed twelve-one dislocations in twelve patients which included the incidence of separation, the direction and the recurrence of the dislocations, and their causes.The study reported that five of the twelve patients had separation.Of the total of 21 dislocations, 11 occurred in cases of separation (52%).Seven out of 11 anterior dislocations were found to have separation, whereas nine out of 13 posterior dislocations occurred without separation (p = 0.0237).Three out of five patients with separation had a recurrence of dislocation, and eventually, two underwent revision to fixed bearing uka.Case seven: it was reported that a 78-year-old female patient experienced three dislocations which all occurred while she was standing up from a chair: ¿ revised bearing to +1 thickness ¿ two closed reductions.
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Search Alerts/Recalls
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