MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA STEM: AMISTEM H HA COATED STD STEM SIZE 3; HIP CEMENTLESS STEM

Catalog Number 01.18.133

Device Problem Material Integrity Problem (2978)

Patient Problem Pain (1994)

Event Date 11/02/2023

Event Type  Injury  

Event Description

The patient came in reporting pain and the cause of the pain is unknown.About 10 years and 4 months after the primary surgery, the surgeon revised the medacta stem and head with a competitor stem and head and revised the medacta liner with a medacta liner.The surgery was completed successfully.

Manufacturer Narrative

Batch review performed on 10 november 2023: lot 131157: (b)(4) manufactured and released on 22-may-2013.Expiration date: 2018-apr-30.No anomalies found related to the problem.To date, (b)(4) of the same lot have been sold with no similar reported event during the period of review.Clinical evaluation performed by clinical affairs department: revision 10 years and 4 months after primary tha.From the radiographic images, radiolucent lines in zone 1 are visible.The position of the cup seems suboptimal.We cannot tell if this is the result of post-surgery migration or the surgeon's choice: in the latter case, no explanation for this decision was supplied.Signs of initial osteolysis are visible in zone 7 and 1.Aseptic loosening is a possible literature-described adverse event after primary cementless hip arthroplasties and causes are often unknown.The reason for this failure cannot be determined.Preliminary investigation performed by r&d project manager: looking at the image attached to the complaint it is visible that the stem is covered with patient blood.It seems that the whole ha coating on the stem body has been absorbed by the patient's bone.Absorption of ha from the stem body can indicate that metabolic activity was taking place and that, presumably, adequate bone contact was achieved at the time of surgery.Some signs of minor damage and scratches are present on the neck of the explanted stem, likely due to the revision surgery and not relevant to the reported issue.Based on the analysis completed and the information available, it is not possible to identify the root cause of the reported complaint.Additional involved implants: batch review performed on 10 november 2023 on ball heads: mectacer 01.29.204 biolox delta ceramic ball head 12/14 ø 32 size s -4 (k112115) lot.115751 lot 115751: (b)(4) manufactured and released on 25-jan-2012.Expiration date: 2016-dec-31.No anomalies found related to the problem.To date, all items of the same lot have been sold with no similar reported event during the period of review.Batch review performed on 10 november 2023 on liner: cc e cc light 01.26.3244hct flat pe hc liner ø 32 / e (k103352) lot.120079 lot 120079: (b)(4) manufactured and released on 15-mar-2012.Expiration date: 2017-jan-31.No anomalies found related to the problem.To date, (b)(4) of the same lot have been sold with no similar reported event during the period of review.

• Brand Name: STEM: AMISTEM H HA COATED STD STEM SIZE 3
• Type of Device: HIP CEMENTLESS STEM
• Manufacturer (Section D): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• Manufacturer (Section G): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• Manufacturer Contact: marco giannessi ; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• MDR Report Key: 18245836
• MDR Text Key: 329477881
• Report Number: 3005180920-2023-00928
• Device Sequence Number: 1
• Product Code: LZO
• UDI-Device Identifier: 07630030804090
• UDI-Public: 07630030804090
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: K093944
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Company Representative
• Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date: 12/01/2023

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 Expiration Date: 04/30/2018
• Device Catalogue Number: 01.18.133
• Device Lot Number: 131157
• Was Device Available for Evaluation?: No
• Initial Date Manufacturer Received: 11/03/2023
• Initial Date FDA Received: 12/01/2023
• Was Device Evaluated by Manufacturer?: No
• Date Device Manufactured: 05/22/2013
• 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