Prosthesis, hip, semi-constrained, metal/polymer, uncemented: medical device reports filed with FDA

4,172 reports carry this product code, 1992–2026; 18 brands with a page.

Read first · FDA's statement on these data

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product. openFDA, FDA

FDA adds: "Although MDRs are a valuable source of information, this passive surveillance system has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data. In addition, the incidence or prevalence of an event cannot be determined from this reporting system alone due to potential under-reporting of events and lack of information about frequency of device use." And: "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."

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

4,172
reports with this product code: 0% of all MAUDE reports; 51
reports, 12 months to August 2026: 53 in the 12 months before; 8%
classified as malfunction: 62.3% across all reports; 0.3%
classified as death, as reported: 0.9% across all reports

Product code LWJ is FDA's classification for "Prosthesis, hip, semi-constrained, metal/polymer, uncemented" (orthopedic panel), a class 2 device. 4,172 medical device reports carry this product code, 0% of the MAUDE database, from July 1992 to August 2026.

51 reports arrived in the 12 months to August 2026, close to the 53 of 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 (90.7%), malfunction (8%) and other (0.6%). 18 brand names with a page on this site carry this code; the brands table is 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."

Brands with this product code

Brand	Reports	Latest 12 months	Classified as death	Classified as malfunction
Profemur R Modular Femoral Neck	1,706	0	0.1%	0.2%
PROFEMUR Modular Femoral Neck	562	29	0.2%	1.9%
Trinity	125	60	0.1%	22.6%
Profemur R Cocr Neck	20	0	0.2%	0%
Srom Stm St 36+8l Nk 18x13x160	14	1	0%	1.7%
OMNI Hip System	7	5	0%	3%
Srom Stm St 36+8l Nk 20x15x165	7	0	0.9%	1.8%
Femoral Head	3	11	0%	2.3%
V40 Cocr Lfit Head 36mm/+5	3	0	0.2%	2.1%
V40 Cocr Lfit Head 36mm/0	3	0	0%	4.1%
Head	2	0	0%	0.7%
Novation	2	23	0.4%	8.1%
Summit Por Taper Sz5 Std Off	2	1	0.2%	3.4%
Summit Por Taper Sz7 Std Off	2	3	0%	2.1%
Bhr	1	0	0%	0.3%
Conserve R Total Head W/Bfh	1	0	0%	0.4%
Corail Amt Collar Size 11	1	2	0%	4.3%
Corail Amt Collar Size 12	1	2	0.3%	5.6%

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."

Manufacturers named

Manufacturer (as written on reports)	Reports	Share
Microport Orthopedics	1,373	32.9%
Wright Medical Technology	1,126	27%
Smith & Nephew Orthopaedics	129	3.1%
Stryker Orthopaedics Mahwah	41	1%
Zimmer	37	0.9%
Aesculap	35	0.8%
Stryker Orthopaedics Cork	22	0.5%
Howmedica Osteonics	21	0.5%
Encore Medical L P	16	0.4%
Depuy Orthopaedics	8	0.2%
Omnilife Science	8	0.2%
Depuy France Sas 3003895575	4	0.1%
Johnson & Johnson Medical Suzhou	4	0.1%
Zimmer Manufacturing	3	0.1%
Depuy International	2	0%

Reports by month, five years

FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

Event type and report source

Event type

Death0.3%13

Injury90.7%3,782

Malfunction8%332

Other0.6%24

Not given0.5%21

Who filed

Manufacturer report98%4,087

Voluntary report1.3%56

User facility report0%0

Distributor report0.4%17

Not given0.3%12

Grey bar: all 26,136,888 MAUDE reports.

Device problems coded

Device problem (FDA code)	Reports	Share
Breakthe device broke	875	21%
Insufficient device problem information	830	19.9%
Fracturea broken bone	321	7.7%
Device dislodged or dislocated	270	6.5%
Explanted	220	5.3%
Corrodedthe device corroded	139	3.3%
Loose or intermittent connection	121	2.9%
Loss of osseointegration	113	2.7%
Replace	75	1.8%
Component(s), broken	70	1.7%
Component(s), worn	61	1.5%
Metal shedding debris	61	1.5%
Naturally worn	59	1.4%
Loose	55	1.3%
Device slipped	41	1%
Dull, blunt	36	0.9%
Migration or expulsion of device	36	0.9%
Implant, removal of	33	0.8%
Osseointegration problem	31	0.7%
Device operates differently than expectedthe device behaved unexpectedly	28	0.7%

Questions about prosthesis, hip, semi-constrained, metal/polymer, uncemented reports

What is product code LWJ?

FDA's classification code for "Prosthesis, hip, semi-constrained, metal/polymer, uncemented", class 2, reviewed by the orthopedic panel. Every device report carries the product code of the device involved.

How many reports carry this code?

4,172 reports through August 2026, 51 of them in the latest 12 months.

Which brands appear most often?

Profemur R Modular Femoral Neck (1,706), PROFEMUR Modular Femoral Neck (562), Trinity (125), Profemur R Cocr Neck (20) and Srom Stm St 36+8l Nk 18x13x160 (14). Widely used products collect more reports because more people use them.

Can the brands table be used to rank the devices?

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." Brands differ in how many are in use, how long they have been sold and how reports are collected.

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. 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.