# K921277: Ranawat/Burstein Total Hip System

- Pathway: 510(k) (Traditional)
- Applicant: Biomet, Inc.
- Decided: Feb 16, 1994 after 701 days
- Product code: LPH (Prosthesis, Hip, Semi-Constrained, Metal/Polymer, Porous Uncemented)
- Device class: 2
- Regulation: 21 CFR 888.3358
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
139 later devices descend from it; 1 cites it directly.
0 of 140 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K050124: Porous Coated Acetabular Components (2005), 138 descendants of its own
- K070369: Regenerx Ringloc + Modular Acetabular Shells (2007), 137 descendants of its own
- K093235: Ringloc + Hybrid Acetabular System (2010), 65 descendants of its own
- K121874: G7 Acetabular System (2012), 53 descendants of its own
- K112802: Pipeline Total Hip System (2012), 53 descendants of its own

Source page: https://510kreport.com/device/K921277
Methodology: https://510kreport.com/methodology