MAUDE Adverse Event Report: ORTHOFIX SRL TRUE LOK PLUS SHORT QUICK ADJUST STRUT

Model Number 1

Device Problem Mechanical Problem (1384)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 04/30/2021

Event Type  Injury  

Manufacturer Narrative

Analysis of historical records: orthofix srl checked the internal records related to the controls made on the device code 50-10170 batch b1503515 before the market release.No anomalies have been found.The original lot, manufactured in 2020, was comprised of 50 devices.All of them have already been distributed to the market.Technical evaluation: the involved device has not been returned to orthofix srl yet.The technical evaluation will be performed as soon as the device is received.Medical evaluation: the information made available on the case was sent to our medical evaluator.A preliminary medical evaluation was performed and will be finalized once the results of the investigation are available.As soon as the results of the investigation are available, orthofix srl will provide a follow up report.Orthofix srl continues monitoring the devices on the market.(b)(4).

Event Description

The information provided by local distributor indicates: (b)(6).Date of initial surgery: (b)(6) 2021.Body part to which device was applied: tibia.Surgery description: fracture treatment.Patient's information: (b)(6), male problem observed during: clinical use on patient/intraoperative.Type of problem: device functional problem.Event description: construct struts broke during the construction of the frame, all struts where still loose with no tension applied when they dismantled.Two stud ball joints pulled out of the socket.The male side of the struts came undone.Patient would have received a stack frame with 6 hex struts on the one ring block and 4 rapid adjust struts on the second ring block.The frame then had to be changed from a 4 rapid adjust strut ring block to a 6 hex strut ring block.Male side came undone.50% of the frame was already with hex struts but due to failure of the rapid adjust stuts the fram had to be converted to 100% hex frame.The complaint report form also indicated: the device failure had no adverse effects on patient.The initial surgery was not completed with the device.A replacement device was not immediately available to complete surgery: frame configuration had to change from 6 hex struts and 4 rapid adjust struts to 12 hex struts.The event led to a delay in the duration of the surgical procedure: 60 minutes.An additional surgery was not required.A medical intervention was not required.Copies of the operative reports are not available.Copies of the x-ray images are not available.Patient current health conditions: unknown, waiting to hear.Manufacturer ref: (b)(4).Distributor ref: n/a.

Event Description

The information provided by local distributor indicates: hospital name: (b)(6).Surgeon name: dr.(b)(6).Date of initial surgery: (b)(6) 2021.Body part to which device was applied: tibia.Surgery description: fracture treatment.Patient's information: 49 year-old, male.Problem observed during: clinical use on patient/intraoperative.Type of problem: device functional problem.Event description: construct struts broke during the construction of the frame, all struts where still loose with no tension applied when they dismantled.Two stud ball joints pulled out of the socket.The male side of the struts came undone.Patient would have received a stack frame with 6 hex struts on the one ring block and 4 rapid adjust struts on the second ring block.The frame then had to be changed from a 4 rapid adjust strut ring block to a 6 hex strut ring block.Male side came undone.50% of the frame was already with hex struts but due to failure of the rapid adjust stuts the fram had to be converted to 100% hex frame.The complaint report form also indicated: - the device failure had no adverse effects on patient.- the initial surgery was not completed with the device.- a replacement device was not immediately available to complete surgery: frame configuration had to change from 6 hex struts and 4 rapid adjust struts to 12 hex struts.- the event led to a delay in the duration of the surgical procedure: 60 minutes.- an additional surgery was not required.- a medical intervention was not required.- copies of the operative reports are not available.- copies of the x-ray images are not available.- patient current health conditions: unknown, waiting to hear.Manufacturer ref: (b)(4).Distributor ref: n/a.

Manufacturer Narrative

Analysis of historical records: orthofix srl checked the internal records related to the controls made on the device code 50-10170 batch b1503515 before the market release.No anomalies have been found.The original lot, manufactured in 2020, was comprised of 50 devices.All of them have already been distributed to the market.Technical evaluation: the returned devices, received on june 15th 2021 were examined by orthofix srl quality engineering department.The visual check evidenced that the true lok plus ball stud of the returned devices is disassembled from the main body.In one of the two struts the surface of the sphere is damaged (probably due to the rubbing of the sphere when it goes out of its seat).In the other strut the sphere was not returned.After careful analysis of the event description and visual inspection of the returned sample, orthofix have categorized this event as a case of ball stud disassembling.This failure mode has been thoroughly investigated and the results of the investigation are presented below.On the samples used for the investigation, the test of the axial tension and the simulation of application were performed.While the axial tension test did not show any anomalies, the simulation of application replicated the notified failure: the failure mode is compatible with the connection of a fixed length strut (i.E.A strut with a locked acute adjustment bolt) to a fully rigid frame (e.G.Parallel rings rigidly connected to each other), with the above mentioned strut not completely resting on the ring and without holding the position of the strut counter-bolt.Final comments: the results of the technical evaluation confirmed that the returned struts were originally conforming to orthofix specifications.Based on the results of the technical investigation, orthofix can conclude that the failure that occurred is not device related.Orthofix srl continues monitoring the products on the market.Please kindly refer also to mfr report number 9680825-2021-00048 follow up 1.

• Brand Name: TRUE LOK PLUS SHORT QUICK ADJUST STRUT
• Type of Device: TRUE LOK PLUS SHORT QUICK ADJUST STRUT
• Manufacturer (Section D): ORTHOFIX SRL; via delle nazioni, 9; bussolengo, verona, 37012 ; IT 37012
• MDR Report Key: 11907216
• MDR Text Key: 266924692
• Report Number: 9680825-2021-00047
• Device Sequence Number: 1
• Product Code: KTT
• UDI-Device Identifier: 18054242510161
• UDI-Public: (01)18054242510161(11)200618(10)B1503515
• Combination Product (y/n): N
• PMA/PMN Number: K170650
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: distributor,foreign
• Type of Report: Initial,Followup
• Report Date: 07/13/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 05/31/2021
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Model Number: 1
• Device Catalogue Number: 50-10170
• Device Lot Number: B1503515
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 06/15/2021
• Date Manufacturer Received: 06/17/2021
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention
• Patient Age: 49 YR