Devices › Prosthesis, hip, semi-constrained (metal uncemented acetabular component)
Device brand name · Hip acetabular cup
Unknown Depuy Acetabular Cup: medical device reports filed with FDA
413 reports name it, 2005–2017. Manufacturer given most often on reports: Depuy Orthopaedics. Product code KWA.
- 413
- device reports naming the brand
- 0% of all MAUDE reports · about 20 a year
- 0
- reports, 12 months to August 2026
- 0 in the 12 months before
- 0.2%
- classified as malfunction
- 3.4% across the product code
- 0%
- classified as death, as reported
- 0 reports · not verified by FDA
FDA's MAUDE database holds 413 reports that name the brand "Unknown Depuy Acetabular Cup" (hip acetabular cup), received between October 2005 and November 2017; the manufacturer given most often on reports is Depuy Orthopaedics. Spellings of one product vary from report to report.
0 reports arrived in the 12 months to August 2026, and none in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are injury (99.8%) and malfunction (0.2%); across all prosthesis, hip, semi-constrained (metal uncemented acetabular component) reports (product code KWA) death is recorded in 0.3% and malfunction in 3.4%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are malposition of device (25.4%), insufficient device problem information (21.3%) and loss of osseointegration (21.1%). The patient problems coded most often are pain, osteolysis and surgical procedure, repeated. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Reports by month, five years
No report naming Unknown Depuy Acetabular Cup was received in the five years to August 2026; the latest was received in November 2017.
By year received
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 138,213 reports carrying product code KWA. Event type is the filer's classification and is not verified by FDA.
Device problems coded
| Device problem (FDA code) | Reports | Share | Share across product code |
|---|---|---|---|
| Malposition of device | 105 | 25.4% | 1.4% |
| Insufficient device problem information | 88 | 21.3% | 52% |
| Loss of osseointegration | 87 | 21.1% | 5.1% |
| Device dislodged or dislocated | 41 | 9.9% | 5.2% |
| Disassembly | 33 | 8% | 0.3% |
| Explanted | 21 | 5.1% | 0.4% |
| Loose or intermittent connection | 15 | 3.6% | 1.2% |
| Migration or expulsion of device | 13 | 3.1% | 1% |
| Implant, removal of | 12 | 2.9% | 1.2% |
| Metal shedding debris | 10 | 2.4% | 7.6% |
| Replace | 10 | 2.4% | 0.1% |
| Loose | 7 | 1.7% | 0.7% |
| Loss of or failure to bond | 6 | 1.5% | 1.2% |
| Naturally worn | 6 | 1.5% | 6.7% |
| Noise, audible | 5 | 1.2% | 3.2% |
| Breakthe device broke | 4 | 1% | 0.5% |
| Dislocated | 3 | 0.7% | 0.2% |
| Other (for use when an appropriate device code cannot be identified) | 3 | 0.7% | 0.2% |
| Component(s), worn | 2 | 0.5% | 0.1% |
| Component(s), broken | 1 | 0.2% | 0% |
FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.
Patient problems coded
| Patient problem (FDA code) | Reports | Share |
|---|---|---|
| Painpain, site not specified | 105 | 25.4% |
| Osteolysis | 35 | 8.5% |
| Surgical procedure, repeated | 13 | 3.1% |
| Foreign body reaction | 9 | 2.2% |
| Bone fracture(s) | 8 | 1.9% |
| Surgical procedure | 8 | 1.9% |
| Host-tissue reaction | 7 | 1.7% |
| Discomfortdiscomfort | 6 | 1.5% |
| Falla fall | 4 | 1% |
| Cyst(s) | 3 | 0.7% |
| Inflammationinflammation | 3 | 0.7% |
| Loss of range of motion | 3 | 0.7% |
| Injurya physical injury | 2 | 0.5% |
| Necrosisdeath of tissue | 2 | 0.5% |
| Weakness | 2 | 0.5% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Unknown Depuy Acetabular Cup | Product code KWA | All MAUDE reports |
|---|---|---|---|
| Reports | 413 | 138,213 | 26,136,888 |
| Share of that pool | — | 0.3% | 0% |
| Classified as death, per 1,000 reports | 0 | 3 | 9 |
| Classified as injury | 99.8% | 94.3% | 36.2% |
| Classified as malfunction | 0.2% | 3.4% | 62.3% |
| Filed by the manufacturer | 100% | 99.2% | 94.9% |
Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Other brands with product code KWA
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Pinnacle Mtl Ins Neut36idx52od | 3,720 | 13 | 0.1% |
| Pinnacle Mtl Ins Neut36idx54od | 2,874 | 11 | 0.1% |
| Asr Acetabular Cups 52 | 2,428 | 2 | 0.1% |
| Asr Uni Femoral Impl Size 46 | 2,500 | 2 | 0.1% |
| Asr Acetabular Cups 54 | 2,350 | 0 | 0.4% |
| Asr Uni Femoral Impl Size 47 | 2,423 | 0 | 0.4% |
| Asr Acetabular Cups 56 | 2,206 | 0 | 0.4% |
| Asr Uni Femoral Impl Size 49 | 2,278 | 0 | 0.4% |
| Asr Acetabular Cups 50 | 2,056 | 0 | 0.1% |
| Asr Uni Femoral Impl Size 45 | 2,119 | 0 | 0.1% |
| Pinnacle Mtl Ins Neut36idx50od | 2,066 | 9 | 0% |
| Unknown Hip Acetabular Liners | 4,814 | 260 | 0.2% |
| Durom Acetabular Component | 2,071 | 0 | 0.1% |
| Unknown Hip Acetabular Cup | 3,215 | 106 | 0.4% |
| Unknown Depuy Asr Acetabular Cup | 1,933 | 0 | 0.2% |
Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."
Questions about Unknown Depuy Acetabular Cup reports
How many FDA reports name Unknown Depuy Acetabular Cup?
413 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.
What kinds of events are reported?
injury (99.8%) and malfunction (0.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
malposition of device (25.4%), insufficient device problem information (21.3%), loss of osseointegration (21.1%), device dislodged or dislocated (9.9%) and disassembly (8%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Unknown Depuy Acetabular Cup was at fault?
No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."
How do I report a problem with a medical device?
Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.
Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.
Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.