# K981201: Osteolock Acetabular Cup

- Pathway: 510(k) (Traditional)
- Applicant: Howmedica Corp.
- Decided: May 29, 1998 after 57 days
- Product code: LZO (Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Polymer, Cemented Or Non-Porous, Uncemented)
- Device class: 2
- Regulation: 21 CFR 888.3353
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K903362 (1990). 1 ancestor in all.
66 later devices descend from it; 1 cites it directly.
0 of 68 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K903362: Osteolock (TM) Acetabular Cup, Howmedica Corp. (1990) Summary page 1.

## Most influential descendants
- K993874: Bofor Revision Coup (2000), 65 descendants of its own
- K011719: Plus Cancellous Bone Screws (2001), 63 descendants of its own
- K123055: Smith & Nephew, Inc Screw and Plate System Instrumentation (2013), 33 descendants of its own
- K140814: Evos Mini-Fragment Plating System (2014), 32 descendants of its own
- K091069: Medacta Bone Screws - Evolis and Versafit (2009), 23 descendants of its own

## Indications for use
The Osteolock™ Acetabular Cup is intended to be used to replace the bearing portion of the acetabulum in primary or revision total hip arthroplasty. These components are designed to be press fit into the acetabulum. They do not achieve fixation by biological ingrowth.

Source page: https://510kreport.com/device/K981201
Methodology: https://510kreport.com/methodology