MAUDE Adverse Event Report: SMITH & NEPHEW ORTHOPAEDICS AG SL-PLUS MIA DETACHABLE RASP 5; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, CEMENTED

Catalog Number 75002694

Device Problems Break (1069); Fracture (1260)

Patient Problems Injury (2348); Hip Fracture (2349)

Event Date 05/11/2020

Event Type  Injury  

Event Description

It was reported that a patient stated that during the fall the conus of the sl-plus stem in situ broke.

Manufacturer Narrative

Results of investigation: it was reported that an unknown sl plus stem broke in situ.An x-ray confirmed that the neck of the stem was broken.Only x-rays but no further medical documents were received for investigation.There was no thorough medical assessment possible due to missing medical documentation.Based on the received x-rays it can be confirmed that the neck of the sl stem broke.As no part was returned for investigation, a visual inspection and a material analysis could not be conducted.The risk of a neck breakage is covered through our risk management files in severity and failure mode.The batch records as well as the complaint history could not be reviewed due to missing part and batch number.The ifu lit.Ed.12.23 ed.05/16 states implant fractures as a possible side effect.Due to the lack of further information, the root cause can not be determined after investigation.Should the device or any further information become available, this complaint will be reopened.To date, further actions are not deemed necessary.Smith and nephew will monitor this device for further similar issues.

Manufacturer Narrative

H3, h6: it was reported that an sl plus stem broke in situ.An x-ray confirmed that the neck of the stem was broken.Only x-rays but no further medical documents were received for investigation.There was no thorough medical assessment possible due to missing medical documentation.The stem and the ball head, used in treatment, were returned for investigation.It can be confirmed that the neck of the stem is broken.Furthermore, the stem shows significant signs of use and scratches, most likely from the revision surgery.It has to be noted, that the ball head is mounted using a sleeve, indicating that a ball head revision took place prior to the neck fracture.A material assessment was conducted.It showed that about three quarters of the fracture show fatigue striations, indicating that the crack propagated by fatigue.The residual fracture is covered by dimples, characteristic of ductile overload.From a material prospective, no deviations could be observed.Discolored spots were observed in the fracture surface as well as on the neck.This indicates the use of electric cutlery at least during the revision surgery.The production documentation and the material certificate were reviewed.There are no indications that the device failed to match specification at the time of manufacturing.No further complaint was reported for the batch in scope.The risk of a neck breakage is covered through our risk management files in severity and failure mode.The instructions for use lit.Ed.12.23 ed.05/16 states implant fractures as a possible side effect.The reported failure mode can be confirmed after investigation.The root cause is attributed to a known inherent risk.This investigation was reopened, as the device was returned for investigation.To date, further actions are not deemed necessary.Smith and nephew will monitor this device for further similar issues.The returned device will be retained.

• Brand Name: SL-PLUS MIA DETACHABLE RASP 5
• Type of Device: PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, CEMENTED
• Manufacturer (Section D): SMITH & NEPHEW ORTHOPAEDICS AG; schachenallee 29; aarau CH-50 00; SZ CH-5000
• MDR Report Key: 10136250
• MDR Text Key: 194604214
• Report Number: 9613369-2020-00097
• Device Sequence Number: 1
• Product Code: JDI
• UDI-Device Identifier: 07611996081060
• UDI-Public: 7611996081060
• Combination Product (y/n): N
• PMA/PMN Number: K123598
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative,consum
• Type of Report: Initial,Followup,Followup
• Report Date: 06/07/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Catalogue Number: 75002694
• Device Lot Number: 9301.11.306
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 03/11/2021
• Initial Date Manufacturer Received: 05/11/2020
• Initial Date FDA Received: 06/09/2020
• Supplement Dates Manufacturer Received: 11/06/2020; 05/25/2021
• Supplement Dates FDA Received: 11/20/2020; 06/07/2021
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Hospitalization; Required Intervention