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WRIGHTS LANE SYNTHES USA PRODUCTS LLC 8MM TI STRAIGHT RADIAL STEM 28MM-STERILE; PROSTHESIS, ELBOW, HEMI-RADIAL,
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| Model Number 04.402.008S |
| Device Problem
Detachment of Device or Device Component (2907)
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| Patient Problems
Osteolysis (2377); No Code Available (3191)
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Event Type
Injury
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Manufacturer Narrative
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Complainant part is not expected to be returned for manufacturer review/investigation.(b)(4).The investigation could not be completed; no conclusion could be drawn at the time of filing this report.A review of the device history records has been requested.Device was used for treatment, not diagnosis.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
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Event Description
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It was reported that on (b)(6) 2017, the patient underwent a revision surgery of the radial head arthroplasty due to loosening which caused osteolysis surrounding the radial head implant, and was implanted with a monoblock implant, made by acumed.The patient¿s prior surgical incision was incised, and full-thickness flaps were developed at the level of the muscular fascia, an incision was made along the mid-lateral line of the joint utilizing the prior surgical interval.A careful and a limited release of the extensor muscular insertion through the lateral epicondyle and supracondylar ridge was performed in a manner to permit subsequent repair.The joint capsule was identified and incised.The patient¿s annular ligament was divided.The underlying implant was then visualized.Careful soft tissue dissection was performed more distally, identifying the posterior interosseous nerve, which was then carefully dissected free from the surrounding soft tissue.At this point, the radial head was removed from the stem, which found to be grossly loose within the intramedullary canal.The implant was then removed, evaluated and found that there was a significant cortical thinning and remodeling proximally around the implant.Careful soft tissue dissection was performed somewhat more distally back to the level, at which the patient¿s bone appeared to be more intact.There were some small fracture lines through the thinning portion of the proximal cortex.A revision cut of the bone was then performed in order to reset it to an appropriate length for a monoblock implant, which was a longer stem implant.A trial implant was reduced and found it to allow for full unrestricted forearm motion with appropriate radio capitellar contact, and no evidence of impingement.A final implant was then selected and impacted down into an appropriate position and found to seat securely.On (b)(6) 2016, the patient had a fall from a ladder and sustained a left elbow fracture dislocation with a comminuted partial articular radial head fracture.The patient also had evidence of significant instability, evidence of an anterior coronoid fracture of the ulna.On (b)(6) 2016, the patient underwent left radial head arthroplasty, open reduction and internal fixation (orif) of coronoid fracture of the ulna, open ligament repair of the lateral ulnar collateral ligaments utilizing a synthes radial head prosthesis.On (b)(6) 2017, during office visit, the patient reported that he was concerned about the appearance of his elbow as he noticed a small prominence in the area of the radial head.It was found out upon review of systems that there was positive for joint swelling, joint pain, muscle aches, stiffness and muscle cramps.From (b)(6) 2017, the patient complained of some difficulties with regaining motion, some swelling and continued to have a little bit of radial discomfort note at the dorsal aspect of the arm.Radiography revealed some osteopenia developing within the lateral column of the distal humerus.There was also some heterotopic bone around the radial head arthroplasty and diaphyseal junction.From (b)(6) 2017, the patient had some residual flexion contracture.Computed tomography (ct) scan revealed several tiny osteophytic densities at multiple levels around the joint space, which had an appearance suggestive of chronic osteophytes or tiny fracture fragments.Some streak artifact was also evident from the radial head prosthesis.The patient also had several cysts within the bone and signs of osteoarthritis within the joint.On (b)(6) 2017, the patient underwent a left elbow contracture release (anterior and posterior) and left elbow joint debridement with removal of posterior osteophytes utilizing a synthes 3.5mm cannulated screw.On (b)(6) 2017, the patient had residual discomfort along the lateral aspect of the elbow.X-ray revealed evidence of surrounding osteolysis and loosening of the proximal radius.Degenerative changes within the ulnar joint with some joint space narrowing and some osteophyte formation was also revealed.On (b)(6) 2017, the patient complained of tenderness around the lateral aspect, as well as internal grinding, and general achiness.Progressive loosening of the radial head arthroplasty implant was evident.Discomfort in the elbow continued to bother the patient.Radiography demonstrated loosening of the radial implant within the proximal radius with cortical remodeling.Also, there were some surrounding calcifications of the collateral ligaments of the elbow and within the surrounding soft tissues.On (b)(6) 2017, the patient noticed some recurrent worsening of his stiffness and had a little bit of numbness over the dorsal aspect of the first webspace and hand during his office visit.On (b)(6) 2017, the patient presented with complaints of numbness and paresthesias along the first dorsal webspace left side.On (b)(6) 2017, the patient had his clinic visit for follow-p of an electromyogram (emg) and reported that he had some dysfunction of the radial cutaneous sensory nerve.On (b)(6) 2018, during office visit, the patient complained of some mild bilateral carpal tunnel syndrome and a radial nerve cutaneous sensory abnormality that had not really improved over time.On (b)(6) 2018, the patient reported that he had noticed some increased clicking, occasional crepitus within the left elbow and occasional achiness from the elbow during his clinic visit.This complaint involves two (2) devices.This report is for one (1) 8mm ti straight radial stem 28mm-sterile.This report is 2 of 2 for (b)(4).
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Manufacturer Narrative
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Depuy synthes is submitting this report pursuant to the provisions of 21 cfr, part 803.This report may be based on information which depuy synthes has not been able to investigate or verify prior to the required reporting date.This report does not reflect a conclusion by fda, depuy synthes or its employees that the report constitutes an admission that the device, depuy synthes, or its employees caused or contributed to the potential event described in this report.Device was used for treatment, not diagnosis.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
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Manufacturer Narrative
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Depuy synthes is submitting this report pursuant to the provisions of 21 cfr, part 803.This report may be based on information which depuy synthes has not been able to investigate or verify prior to the required reporting date.This report does not reflect a conclusion by fda, depuy synthes or its employees that the report constitutes an admission that the device, depuy synthes, or its employees caused or contributed to the potential event described in this report.Device condition: visual inspection performed at customer quality on the device images provided showed no issues of stem loosening.Document/specification review: a device history review, was performed for the returned instrument¿s lot number, and no ncrs, no material record reviews or complaint-related issues were identified with the lot number which may have contributed to the complaint condition.Design and clinical risk management (dcrm) review: all products related to the depuy synthes radial head prosthesis system including the straight stem (part numbers: 04.402.006s-.010s) and cocr radial heads (part numbers: 09.402.018s-028s) is currently being recalled (recall# 555531) therefore all investigations related to these products are being investigated.Therefore, no further dcrm review is required at this time.Conclusion: no definitive root cause was able to be determined as the circumstances surrounding the event are unknown.During the investigation no unidentified product design/manufacturing issues or discrepancies were observed (based on the images) that may have contributed to the complaint condition.Since the radial head prosthesis system has been recalled and the complaint condition was investigated through those efforts, no further investigation is required.Device history lot.Manufacturing location: supplier - avalign / inspected, packaged and released by: monument.Release to warehouse date: 29-jul-2016.Expiration date: 30-jun-2021.Part number: 04.402.008s, 8mm ti straight radial stem 28mm ¿ sterile.Lot number: h027982 (sterile).This lot met all dimensional, visual, sterility and packaging criteria at the time of release with no issues documented during the inspection or release of the product that would contribute to this complaint condition.Component part(s) reviewed: part number: 21014, tialnbri16.00.Lot number: 6955294.Raw material receiving/putaway checklist met all inspection acceptance criteria.This lot met all dimensional, visual, sterility and packaging criteria with no issues documented during the inspection or release of the product that would contribute to this complaint condition.Device was used for treatment, not diagnosis.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
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