MAUDE Adverse Event Report: SMITH & NEPHEW, INC. CATALYSTEM COLLARED SO SZ 5; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/CERAMIC/POLYMER, CEMENTED OR NON-POROUS

Catalog Number	71314025
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Discomfort (2330); Unequal Limb Length (4534)
Date of Event	02/05/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that, following a tha performed on (b)(6) 2025 due to osteoarthritis, the patient started to experience a "spongy feeling" in the left hip after intense workouts, and leg length discrepancy that felt "longer on the left".These symptoms began on the same day that the surgery was performed.It is unknown how this event was treated.The patient outcome is unknown.No further complications were reported.
Additional Manufacturer Narrative
Internal complaint reference: (b)(4).This complaint was opened by smith+nephew to document a patient complication reported that includes reference to the use of a smith+nephew product without evidence about a specific product problem.The reported complication relates to known inherent procedural risks that are appropriately documented in our risk files.Smith+nephew will continue to monitor trends in accordance with our post-market surveillance process and take necessary action as required if anticipated severity and/or occurrence rates are exceeded.Smith+nephew has no reason to suspect that the product failed to meet any specifications at the time of manufacture.Based on our review of all currently available information, we are unable to confirm a relationship between the reported event and the device or identify a definitive root cause.However, as the use of our product cannot be excluded as a potential cause or contributory factor to the reported issue, we are submitting this report in accordance with applicable regulations.If additional investigative findings or information becomes available that alters the conclusions of this report, a follow-up report will be submitted as required.

• Brand Name: CATALYSTEM COLLARED SO SZ 5
• Common Device Name: PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/CERAMIC/POLYMER, CEMENTED OR NON-POROUS
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• Manufacturer (Section G): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• Manufacturer Contact: holly topping ; 1450 brooks rd.; memphis, TN 38116 ; 5123913905
• MDR Report Key: 24590400
• Report Number: 1020279-2026-00337
• Device Sequence Number: 9331453
• Product Code: LZO
• UDI-Device Identifier: 00885556891612
• UDI-Public: 885556891612
• Combination Product (Y/N): N
• Initial Reporter State: IL
• Initial Reporter Country: US
• PMA/510(K) Number: K250571
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 03/13/2026

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
• Operator of Device: Health Professional
• Device Catalogue Number: 71314025
• Device Lot Number: C2419695
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/17/2026
• Initial Report FDA Received Date: 03/13/2026
• Date Device Manufactured: 09/19/2024
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: 71335552, LOT 24FL00022; 71335752, LOT 24FM07629; 71343603, LOT 24KM08287
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Age: 57 YR
• Patient Sex: Female
• Patient Weight: 69 KG
• Patient Ethnicity: Non Hispanic
• Patient Race: White