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Harmony 74016255Recalls & reported problems

Smith & Nephew, Inc. · STANDARD FLEXION SPACER BLOCK · Class 1

Data updated Oct 13, 2026 from official FDA records · Editorial policy

Adverse event reports
9
Deaths reported
0
Injuries reported
0
Recalls naming it
0

Summary

The FDA's MAUDE database contains 9 adverse event reports that list this exact device (DI 00885556746745), received between Feb 24, 2023 and Feb 7, 2025 — classified as 9 malfunctions.

The most frequently reported specific device problem is “Fracture” (9 reports).

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. How this data works · Data updated Oct 13, 2026.

Reports received per month

Nov 2023: 0 reportsDec 2023: 0 reportsJan 2024: 0 reportsFeb 2024: 0 reportsMar 2024: 1 reportsApr 2024: 0 reportsMay 2024: 2 reportsJun 2024: 0 reportsJul 2024: 0 reportsAug 2024: 0 reportsSep 2024: 0 reportsOct 2024: 1 reportsNov 2024: 0 reportsDec 2024: 0 reportsJan 2025: 0 reportsFeb 2025: 2 reportsMar 2025: 0 reportsApr 2025: 0 reportsMay 2025: 0 reportsJun 2025: 0 reportsJul 2025: 0 reportsAug 2025: 0 reportsSep 2025: 0 reportsOct 2025: 0 reportsNov 2025: 0 reportsDec 2025: 0 reportsJan 2026: 0 reportsFeb 2026: 0 reportsMar 2026: 0 reportsApr 2026: 0 reportsMay 2026: 0 reportsJun 2026: 0 reportsJul 2026: 0 reportsAug 2026: 0 reportsSep 2026: 0 reportsOct 2026: 0 reports2024202520262
Last 36 months. The most recent month may be incomplete.

Most reported problems

Device problems

  • Fracture9
  • Break2

Patient problems

  • No Clinical Signs, Symptoms or Conditions9

Recent adverse event reports

The 9 most recent of 9 reports, in the reporter's own words as published by the FDA.

  • MalfunctionFeb 7, 2025Fracture; Fracture

    IT WAS REPORTED THAT DURING SURGERY, THE CLIP OF ONE (1) STD FLEXION BLOCK BROKE. THE PROCEDURE WAS COMPLETED WITHOUT DELAY USING A S+N BACK-UP DEVICE. NO INJURY WAS REPORTED AS A CONSEQUENCE OF THIS ISSUE.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 21339940 ↗
  • MalfunctionFeb 5, 2025Break; Fracture; Break; Fracture

    IT WAS REPORTED THAT DURING SURGERY THE LEFT SIDE OF ONE (1) STD FLEXION BLOCK IS BROKEN. IT IS UNKNOWN HOW THE PROCEDURE WAS COMPLETED AND IF THERE WAS A SURGICAL DELAYED. NO PATIENT INJURIES WERE REPORTED.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 21317702 ↗
  • MalfunctionOct 10, 2024Fracture; Fracture

    IT WAS REPORTED THAT DURING A TKA SURGERY, ONE (1) STD FLEXION BLOCK FRACTURED AT THE BUMPER WHERE THE HANDLE CONNECTS. THE BROKEN PIECES THAT FELL INTO THE PATIENT WERE ALL RETRIEVED AND ACCOUNTED FOR USING A TONSIL INSTRUMENT. THE PROCEDURE RESUMED WITHOUT ANY DELAY, BY MOVING FORWARD WITHOUT PERFORMING THE FLEXION GAP ASSESSMENT. NO INJURY WAS REPORTED AS A CONSEQUENCE OF THIS ISSUE.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 20418283 ↗
  • MalfunctionMay 21, 2024Break; Fracture; Break; Fracture

    IT WAS REPORTED THAT, DURING TKA SURGERY, ONE (1) STD FLEXION BLOCK BROKE IN-OPERATIVELY. THE PROCEDURE WAS RESUMED, WITHOUT ANY DELAY, WITH A CHANGE IN SURGICAL TECHNIQUE. NOTHING WAS LEFT IN THE PATIENT AND NO PATIENT INJURIES HAVE BEEN REPORTED UP TO DATE.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 19359905 ↗
  • MalfunctionMay 20, 2024Fracture; Fracture

    IT WAS REPORTED THAT, DURING A TKA, ONE (1) STD FLEXION BLOCK BROKE UPON USING. NO OBJECTS FELL INTO THE PATIENT AND ALL PIECES WERE RECOVERED. THE PROCEDURE WAS RESUMED, WITHOUT ANY DELAY, USING A S+N BACK-UP DEVICE. PATIENT WAS NOT HARMED AS A CONSEQUENCE OF THIS PROBLEM.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 19353007 ↗
  • MalfunctionMar 15, 2024Fracture; Fracture

    IT WAS REPORTED THAT DURING A TKA SURGERY, THE END CAPTURE OF THE MEDIUM HEXDRIVER LEFT LIP ABOVE THE CONNECTION POINT OF THE STD FLEXION BLOCK WAS NOTICED TO BE SHEARED OFF. THE PROCEDURE WAS RESUMED, WITHOUT ANY DELAY, USING THE SAME DEVICE. PATIENT WAS NOT INJURED AS CONSEQUENCE OF THIS PROBLEM.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 18913898 ↗
  • MalfunctionMar 16, 2023Fracture; Fracture

    IT WAS REPORTED THAT, DURING TKA SURGERY, WHILE CHECKING THE FLEXION GAP, THE THIN PIECE OF PLASTIC, AT THE JUNCTION WHERE THE PUSH BUTTON ENTERS THE FLEXION GAP STICK, OF A STD FLEXION BLOCK BROKE. IT IS UNKNOWN HOW THE PROCEDURE WAS COMPLETED OR IF THERE WAS ANY DELAY. PATIENT WAS NOT INJURED AS CONSEQUENCE OF THIS PROBLEM.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 16558332 ↗
  • MalfunctionMar 16, 2023Fracture; Fracture

    IT WAS REPORTED THAT, DURING TKA SURGERY, WHILE CHECKING THE FLEXION GAP, THE THIN PIECE OF PLASTIC, AT THE JUNCTION WHERE THE PUSH BUTTON ENTERS THE FLEXION GAP STICK, OF A STD FLEXION BLOCK BROKE. IT IS UNKNOWN HOW THE PROCEDURE WAS COMPLETED OR IF THERE WAS ANY DELAY. PATIENT WAS NOT INJURED AS CONSEQUENCE OF THIS PROBLEM.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 16556614 ↗
  • MalfunctionFeb 24, 2023Fracture; Fracture

    IT WAS REPORTED THAT, DURING TKA SURGERY, WHILE CHECKING THE FLEXION GAP, THE THIN PIECE OF PLASTIC, AT THE JUNCTION WHERE THE PUSH BUTTON ENTERS THE FLEXION GAP STICK, OF A STD FLEXION BLOCK BROKE. THE PROCEDURE WAS RESUMED, AFTER A NON-SIGNIFICANT DELAY, USING THE SAME DEVICE. PATIENT WAS NOT INJURED AS CONSEQUENCE OF THIS PROBLEM.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 16439987 ↗

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