MAUDE Adverse Event Report: STRYKER GMBH LOCKING SCREW AXSOS 3 TI 4.0MM / L42MM; PLATE, FIXATION, BONE

Catalog Number 661042

Device Problem Loose or Intermittent Connection (1371)

Patient Problems Fall (1848); Pain (1994); Fracture, Arm (2351)

Event Date 02/07/2018

Event Type  Injury  

Manufacturer Narrative

Once the investigation has been completed any additional information will be reported in a supplemental report.

Event Description

It was reported that female patient born on (b)(6) fell down at home (b)(6) 2018.Arrived in hospital (b)(6) 2018 and it was noticed that she has right proximal humerus fracture.Patient smokes ½-1 packets of cigarettes per day, hypertension, dmii, hypercholesterolemia, primary hyperaldosteronism, palmoplanta pustulosis.Patient was operated (b)(6) 2018.Axsos 3 prox.Humerus plate with 4 holes was implanted.Proximally there were 7 locking screws implanted and distally 2 locking screws and 2 bone screws.The surgery went through smoothly.A 5.2 the patient felt a click on the shoulder and contacted the hospital.Patient was asked to follow the situation at home.Pain increased and 7.2 patient comes to first aid.New rtg image were taken 7.2 and 8.2 ct.The distal screws of the plate are loose, waiting for revision operation.Sales rep has asked the hospital to return the plate and screws to stryker for investigation.Product numbers are not available at this point.Items will be added to this pi once information received from hospital.

Manufacturer Narrative

The reported event that a proximal lateral humerus plate axsos 3 ti for right humerus 4 hole / l99mm and its axsos screws were alleged of ''component loosening" could not be confirmed, since the returned device is conforming to specifications and fully functional, and no other evidences such as x-rays were provided.More detailed information about the complaint event, such as the activity level of the patient, details about their bone quality, as well as x-rays must be available in order to determine the root cause of the complaint event.However, based on complaint history, some of the possible root causes are, but are not limited to: the given case presents a typical implant failure caused by a distally too short plate in a patient that may have advanced osteoporosis.(female born in (b)(6)) an important activity level of the patient before the necessary 8 weeks of bone/implant fixation.As a reminder, the patient heard the "click" merely 1 week after implantation.As per ifu: "[.] post-operative post-operative patient activity: these implants are neither intended to carry the full load of the patient acutely, nor intended to carry a significant portion of the load for extended periods of time.For this reason post-operative instructions and warnings to patients are extremely important.External immobilization (e.G.Bracing or casting) may be employed until x-rays or other procedures confirm adequate bone consolidation.[.]" poor bone quality / bone stock.The device inspection revealed the following: the screws are in general good condition, although some scratches on the torx of the screw were found, which is consistent with the normal usage of the screws, during insertion and/or removal.Concerning the thread, there were only found some damages in 1 of the returned screws: the locking screw has damages just below the locking thread of the screw¿s head, so it could not have compromised the locking mechanism (catalog#: 661040, lot #: j50483).The plate is generally in a good state.The threaded holes do not have any apparent damage that could have prevented the locking mechanism with the screws.Due to the nature of the complaint, a dimensional inspection was not considered necessary.The locking mechanism of both plate and screws was tested.The complainant implants were tested against samples and against each other.The conclusion of this inspection was that all the screws locked in all the plate holes, no issues were found in the locking mechanism, it works perfectly.A review of the device history for the reported lot did not indicate any abnormalities.No corrective actions are required at this time.A review of the labeling did not indicate any abnormalities.No indications of material, manufacturing or design related problems were found during the investigation.If any further information is provided, the investigation report will be updated.

Event Description

It was reported that female patient born on (b)(6) fell down at home (b)(6) 2018.Arrived in hospital (b)(6) 2018 and it was noticed that she has right proximal humerus fracture.Patient smokes ½-1 packets of cigarettes per day, hypertension, dmii, hypercholesterolemia, primary hyperaldosteronism, palmoplanta pustulosis.Patient was operated (b)(6) 2018.Axsos 3 prox.Humerus plate with 4 holes was implanted.Proximally there were 7 locking screws implanted and distally 2 locking screws and 2 bone screws.The surgery went through smoothly.On (b)(6) the patient felt a click on the shoulder and contacted the hospital.Patient was asked to follow the situation at home.Pain increased and (b)(6) patient comes to first aid.New rtg image were taken (b)(6) and (b)(6) ct.The distal screws of the plate are loose, waiting for revision operation.Sales rep has asked the hospital to return the plate and screws to stryker for investigation.Product numbers are not available at this point.Items will be added to this pi once information received from hospital.

• Brand Name: LOCKING SCREW AXSOS 3 TI 4.0MM / L42MM
• Type of Device: PLATE, FIXATION, BONE
• Manufacturer (Section D): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; CH 2545
• Manufacturer (Section G): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; CH 2545
• Manufacturer Contact: anna jusinski ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 7321881
• MDR Text Key: 101832761
• Report Number: 0008031020-2018-00159
• Device Sequence Number: 1
• Product Code: HRS
• Combination Product (y/n): N
• Reporter Country Code: FI
• PMA/PMN Number: K123964
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: health professional
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 05/23/2018

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 03/07/2018
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Lay User/Patient
• Device Catalogue Number: 661042
• Device Lot Number: J54389
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/17/2018
• Is the Reporter a Health Professional?: Yes
• Date Manufacturer Received: 05/01/2018
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 01/07/2016
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention