Use cautionMedical device recall · FDA · Published May 17, 2024
Biomet RingLoc Hip Cup Recall: Risk of Joint Instability After Surgery
Biomet recalls RingLoc Bi-Polar Hip System Acetabular Cups with 41mm outer diameter that may cause joint instability requiring surgery. Affected units have specific lot numbers.
41 mm acetabular outer heads were potentially assembled with a 42 mm locking ring, may lead to joint instability leading requiring surgical intervention
Take action
Contact the company
📍Recalling firmBiomet, Inc.56 E Bell Dr · Warsaw, IN 46582-6989
“Biomet RingLoc Hip Cup Recall: Risk of Joint Instability After Surgery.” GovInfoNow, updated August 19, 2026. https://govinfonow.com/recall/55049-biomet-ringloc-hip-cup-recall-risk-of-joint-instability-after. Based on FDA recall #Z-2179-2024 (https://api.fda.gov/device/enforcement.json?search=recall_number:%22Z-2179-2024%22&limit=1).
The FDA announced on May 17, 2024, that Biomet, Inc. is recalling RingLoc Bi-Polar Hip System Acetabular Cups with a 41 mm outer diameter due to potential assembly errors. The hazard involves parts that may lead to joint instability requiring surgical intervention.
How to tell if you have it
Brand: Biomet
Product: RingLoc Bi-Polar Hip System Acetabular Cup, 41 mm Outer Diameter - Used in hip hemi-arthroplasty Item Number: 11-165206
UPC: 00880304001923
Lot Numbers: 66540443, 66601057, 66623486, 66635486
The hazard
According to the FDA, the 41 mm acetabular outer heads were potentially assembled with a 42 mm locking ring. This defect may lead to joint instability leading requiring surgical intervention.
Context
GovInfoNow's records show Biomet, Inc. has 28 other recalls on record since 2026-07-01. Other recent recalls of similar products include Howmedica TRIATHLON Hinge Insert Recall (2026-07-30), Howmedica OMNIFIT Series I Acetabular Insert Recall (2026-07-30), and U2 Total Knee System recall (2026-05-20).
How to tell if you have this one
Check if your hip implant has a 41mm outer diameter and the specific lot numbers listed in the recall: 66540443, 66601057, 66623486, or 66635486.
Brand
Biomet
Product
RingLoc Bi-Polar Hip System Acetabular Cup, 41 mm Outer Diameter - Used in hip hemi-arthroplasty Item Number: 11-165206
Category
Medical device
Based on the official FDA remedy
What to do — step by step
Check Your Implant Details
Look for the lot numbers listed in the recall: 66540443, 66601057, 66623486, or 66635486.
Where it went and when
Where it was distributed
Distributed nationwide and abroad; the notice names 6 states.
Named in the notice
Covered by “nationwide”
Not listed
FDA distribution: “Worldwide - US Nationwide distribution in the states of AZ, CA, NJ, PA, TX, VA and the country of Chile.” States read from FDA’s own wording; “not listed” means the notice does not name it.
Named in the notice: Arizona, California, New Jersey, Pennsylvania, Texas, Virginia.
Recall timeline
FDA published this recall 47 days after the firm started it.
1Firm started the recall
2FDA classified it Class II
3Published in FDA’s Enforcement Report
Dates from the agency record only; steps without a date are left out.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Official source: FDA Recall #Z-2179-2024 (May 17, 2024) — FDA publishes no per-recall page; this is the official machine-readable enforcement record. Search FDA recalls for Z-2179-2024 to see it in context.
Plain-language summary written by qwen3:4b on August 19, 2026, from the official record above. Not reviewed by a person — if it conflicts with the FDA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official FDA recall data; we don’t issue, amend or administer recalls.