P.F.C. SIGMARecalls & reported problems across all models
Depuy (Ireland) · 487 models in the FDA device registry
Data updated Oct 18, 2026 from official FDA records · Editorial policy
- Adverse event reports
- 5,192
- Deaths reported
- 1
- Injuries reported
- 4,327
- Recalls
- 1
We found 487 models of P.F.C. SIGMA by Depuy (Ireland) in the FDA's device registry (GUDID). Together they are named in 5,192 adverse event reports in the FDA's MAUDE database, received between Oct 25, 2016 and Sep 30, 2026 — classified as 1 death, 4,327 injuries, 864 malfunctions.
The most frequently reported specific device problem is “Loss of or Failure to Bond” (467 reports).
1 FDA recall record name at least one of these models by its device identifier.
Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event. Widely used products collect more reports, so totals can't be used to compare products or estimate failure rates. Only reports that name a model's exact device identifier are counted. What reports can and can't tell you · How this data works
Reports received per month, all models
P.F.C. SIGMA recalls
FDA recall records that name at least one of these models by its device identifier, newest first. Each recall usually covers specific models or lots, so check the details.
- Jul 18, 2018Class IITerminated
This unit may be missing the screw/collet Assembly
Z-2949-2018 · Root cause: Employee error · Recall details · FDA record ↗
Most reported P.F.C. SIGMA problems
Device problems
- Adverse Event Without Identified Device or Use Problem2,779
- Loss of or Failure to Bond467
- Naturally Worn448
- Insufficient Device Problem Information309
- Break300
- Fracture219
- Appropriate Device Problem Term/Code Not Available95
- Device-Device Incompatibility90
Patient problems
- Pain1,645
- No Code Available1,374
- Unspecified Infection1,013
- Joint Laxity552
- No Clinical Signs, Symptoms or Conditions387
- No Consequences Or Impact To Patient375
- Insufficient Information364
- Appropriate Clinical Signs, Symptoms and Conditions Term/Code Not Available267
P.F.C. SIGMA models
487 models, 100 per page, most reported first. Each model has its own page with its reports, recalls and device details.
- P.F.C. SIGMA 96-0102Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing1 death319 reports
- P.F.C. SIGMA 96-0103Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing257 reports
- P.F.C. SIGMA 96-0781PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER236 reports
- P.F.C. SIGMA 96-0101Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing172 reports
- P.F.C. SIGMA 96-0784PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER164 reports
- P.F.C. SIGMA 1581-30-000PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER152 reports
- P.F.C. SIGMA 1581-25-000PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER133 reports
- P.F.C. SIGMA 1581-40-000PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER110 reports
- P.F.C. SIGMA 96-2141Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing102 reports
- P.F.C. SIGMA 96-2131Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing91 reports
- P.F.C. SIGMA 96-0783PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER82 reports
- P.F.C. SIGMA 96-2142Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing70 reports
- P.F.C. SIGMA 96-0100Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing62 reports
- P.F.C. SIGMA 1581-50-000PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER61 reports
- P.F.C. SIGMA 96-2151Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing60 reports
- P.F.C. SIGMA 96-0830Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing1 recall2 reports
- P.F.C. SIGMA 96-2041Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing51 reports
- P.F.C. SIGMA 96-0886Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing49 reports
- P.F.C. SIGMA 96-1045TEMPLATE49 reports
- P.F.C. SIGMA 96-1044TEMPLATE47 reports
- P.F.C. SIGMA 96-2132Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing46 reports
- P.F.C. SIGMA 96-2121Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing42 reports
- P.F.C. SIGMA 96-0888Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing40 reports
- P.F.C. SIGMA 96-2031Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing40 reports
- P.F.C. SIGMA 1581-20-000PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER39 reports
- P.F.C. SIGMA 86-6401PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER39 reports
- P.F.C. SIGMA 96-0866Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing36 reports
- P.F.C. SIGMA 96-2152Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing35 reports
- P.F.C. SIGMA 96-2051Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing33 reports
- P.F.C. SIGMA 96-0871Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing32 reports
- P.F.C. SIGMA 96-2042Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing32 reports
- P.F.C. SIGMA 96-0908Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing31 reports
- P.F.C. SIGMA 86-6402PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER30 reports
- P.F.C. SIGMA 96-2021Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing30 reports
- P.F.C. SIGMA 86-6023PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER29 reports
- P.F.C. SIGMA 96-1043TEMPLATE28 reports
- P.F.C. SIGMA 1581-23-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER26 reports
- P.F.C. SIGMA 86-6024PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER25 reports
- P.F.C. SIGMA 96-0906Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing25 reports
- P.F.C. SIGMA 96-2143Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing25 reports
- P.F.C. SIGMA 1581-22-010PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER23 reports
- P.F.C. SIGMA 96-2133Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing23 reports
- P.F.C. SIGMA 1581-24-112PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER22 reports
- P.F.C. SIGMA 1581-23-010PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER21 reports
- P.F.C. SIGMA 1581-24-108PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER21 reports
- P.F.C. SIGMA 96-0881Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing21 reports
- P.F.C. SIGMA 96-2032Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing21 reports
- P.F.C. SIGMA 86-6029PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER20 reports
- P.F.C. SIGMA 96-0112Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing20 reports
- P.F.C. SIGMA 96-0861Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing20 reports
- P.F.C. SIGMA 96-2134Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing20 reports
- P.F.C. SIGMA 1581-22-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER19 reports
- P.F.C. SIGMA 96-0826Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing19 reports
- P.F.C. SIGMA 96-0880Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing19 reports
- P.F.C. SIGMA 1581-14-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER18 reports
- P.F.C. SIGMA 1581-24-010PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER18 reports
- P.F.C. SIGMA 96-0111Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing18 reports
- P.F.C. SIGMA 96-0868Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing18 reports
- P.F.C. SIGMA 96-0901Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing18 reports
- P.F.C. SIGMA 96-2122Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing18 reports
- P.F.C. SIGMA 1581-14-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER17 reports
- P.F.C. SIGMA 1581-14-010PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER17 reports
- P.F.C. SIGMA 95-1040Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing17 reports
- P.F.C. SIGMA 96-1048TEMPLATE17 reports
- P.F.C. SIGMA 96-2111Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing17 reports
- P.F.C. SIGMA 96-2153Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing17 reports
- P.F.C. SIGMA 96-2154Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing17 reports
- P.F.C. SIGMA 1581-23-112PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER16 reports
- P.F.C. SIGMA 86-6022PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER16 reports
- P.F.C. SIGMA 96-0841PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER16 reports
- P.F.C. SIGMA 96-2033Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing16 reports
- P.F.C. SIGMA 1581-13-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER15 reports
- P.F.C. SIGMA 1581-22-112PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER15 reports
- P.F.C. SIGMA 1581-23-108PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER15 reports
- P.F.C. SIGMA 1581-24-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER15 reports
- P.F.C. SIGMA 1581-25-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER15 reports
- P.F.C. SIGMA 96-0862Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing15 reports
- P.F.C. SIGMA 1581-14-108PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER14 reports
- P.F.C. SIGMA 1581-23-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER14 reports
- P.F.C. SIGMA 86-6025PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER14 reports
- P.F.C. SIGMA 96-0860Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing14 reports
- P.F.C. SIGMA 96-0911Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing14 reports
- P.F.C. SIGMA 96-1441TEMPLATE14 reports
- P.F.C. SIGMA 96-2022Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing14 reports
- P.F.C. SIGMA 1581-12-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER13 reports
- P.F.C. SIGMA 1581-13-010PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER13 reports
- P.F.C. SIGMA 1581-13-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER13 reports
- P.F.C. SIGMA 1581-22-108PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER13 reports
- P.F.C. SIGMA 1581-24-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER13 reports
- P.F.C. SIGMA 1581-25-108PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER13 reports
- P.F.C. SIGMA 95-1050Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing13 reports
- P.F.C. SIGMA 96-0110Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing13 reports
- P.F.C. SIGMA 96-0883Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing13 reports
- P.F.C. SIGMA 96-1886TEMPLATE13 reports
- P.F.C. SIGMA 96-2123Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing13 reports
- P.F.C. SIGMA 1581-12-110PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER12 reports
- P.F.C. SIGMA 1581-21-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER12 reports
- P.F.C. SIGMA 1581-22-008PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER12 reports
- P.F.C. SIGMA 96-0113Prosthesis, knee, patellofemorotibial, semi-constrained, metal/polymer, mobile bearing12 reports
- P.F.C. SIGMA 96-0846PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL/POLYMER12 reports
Recent P.F.C. SIGMA adverse event reports
The 15 most recent reports across all models, in the reporter's own words as published by the FDA.
InjurySep 30, 2026Adverse Event Without Identified Device or Use Problem
Patient problems: Unspecified Infection
MAUDE report 50950968 ↗InjurySep 29, 2026Adverse Event Without Identified Device or Use Problem
Patient problems: Unspecified Infection
MAUDE report 50934378 ↗InjurySep 29, 2026Off-Label Use
Patient problems: Unspecified Infection
MAUDE report 50934319 ↗InjuryAug 13, 2026Adverse Event Without Identified Device or Use Problem
It was reported that patient poly was revised for more stability.DOI- Unknown.DOR- (b)(6) 2026.Affected side- Right knee.
Patient problems: Joint Laxity
MAUDE report 50242128 ↗InjuryAug 12, 2026Adverse Event Without Identified Device or Use Problem
Patient problems: Unspecified Infection
MAUDE report 50226536 ↗InjuryAug 11, 2026Adverse Event Without Identified Device or Use Problem
It was reported that patient was revised due to Knee pain. Possible infection.Activity Level - Yes.DOI: Unknown.DOR: Unknown .Affected Side: Left Knee.
Patient problems: Pain; Unspecified Infection
MAUDE report 50216234 ↗InjuryAug 11, 2026Adverse Event Without Identified Device or Use Problem
It was reported that patient was revised due to Knee pain. Possible infection.Activity Level - Yes.DOI: Unknown.DOR: Unknown.Affected Side: Left Knee.
Patient problems: Pain; Unspecified Infection
MAUDE report 50216229 ↗InjuryAug 7, 2026Adverse Event Without Identified Device or Use Problem
(b)(6) first report of retrievals for Statement of Work 10 for Q2 of 2026. (b)(6) is the research location, and not the facility of placement. A DePuy Synthes Implant was revised and reviewed for analysis. Reason for revision: Revision due to pain and stiffness.
Patient problems: Muscular Rigidity; Pain
MAUDE report 50180012 ↗InjuryAug 7, 2026Loss of or Failure to Bond
Thayer School of Engineering at Dartmouth first report of retrievals for Statement of Work 10 for Q2 of 2026. Dartmouth is the research location, and not the facility of placement.A DePuy Synthes Implant was revised and reviewed for analysis.Reason for revision: Revision due to unspecified loosening and instability. The non-articular surface of the cemented CC femoral component shows moderate cement remaining. The non-articular surface of the cemented tibial tray shows abundant cement remaining.
Patient problems: Joint Laxity
MAUDE report 50179757 ↗InjuryAug 7, 2026Loss of or Failure to Bond
Thayer School of Engineering at Dartmouth first report of retrievals for Statement of Work 10 for Q2 of 2026. Darthmouth is the research location, and not the facility of placement.A DePuy Synthes Implant was revised and reviewed for analysisReason for revision: Revision due to unspecified loosening and instability. The non-articular surface of the cemented CC femoral component shows moderate cement remaining.The non-articular surface of the cemented tibial tray shows abundant cement remaining
Patient problems: Joint Laxity
MAUDE report 50179181 ↗InjuryAug 7, 2026Appropriate Device Problem Term/Code Not Available
Thayer School of Engineering at Dartmouth first report of retrievals for Statement of Work 10 for Q2 of 2026. Dartmouth is the research location, and not the facility of placement.A DePuy Synthes Implant was revised and reviewed for analysis.Reason for revision: Revision due to instability. The non-articular surface of the fixed-bearing polyethylene tibial insert shows moderate yellowing.
Patient problems: Joint Laxity
MAUDE report 50174300 ↗InjuryAug 7, 2026Adverse Event Without Identified Device or Use Problem
Thayer School of Engineering at Dartmouth first report of retrievals for Statement of Work 10 for Q2 of 2026. (b)(6) is the research location, and not the facility of placement.A DePuy Synthes Implant was revised and reviewed for analysis.Reason for revision: Revision due to instability. The non-articular surface of the fixed-bearing polyethylene tibial insert shows moderate yellowing .
Patient problems: Joint Laxity
MAUDE report 50174154 ↗InjuryAug 7, 2026Adverse Event Without Identified Device or Use Problem
Patient problems: Muscular Rigidity; Pain
MAUDE report 50173024 ↗InjuryAug 7, 2026Adverse Event Without Identified Device or Use Problem
Thayer School of Engineering at Dartmouth first report of retrievals for Statement of Work 10 for Q2 of 2026. Dartmouth is the research location, and not the facility of placement.A DePuy Synthes Implant was revised and reviewed for analysis.Reason for revision: Revision due to pain and stiffness.
Patient problems: Muscular Rigidity; Pain
MAUDE report 50172954 ↗InjuryAug 6, 2026Adverse Event Without Identified Device or Use Problem
Patient problems: Joint Laxity; Pain
MAUDE report 50161947 ↗
Other Depuy (Ireland) products
All Depuy (Ireland) devices →Sources and updates
- Models: FDA GUDID, file dated Oct 13, 2026. Models are grouped by the brand name the manufacturer registered.
- Adverse event reports: FDA MAUDE, file dated Oct 14, 2026
- Recalls: FDA Medical Device Recalls, file dated Oct 16, 2026
- Page last rebuilt: Oct 18, 2026. Data downloaded through openFDA, which notes it is not validated for clinical or regulatory use.
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