# K870271: S-Rom Poly-Dial Constrained Socket for Acet. Cup

- Pathway: 510(k) (Traditional)
- Applicant: Joint Medical Products Corp.
- Decided: Apr 20, 1987 after 88 days
- Product code: KWZ (Prosthesis, Hip, Constrained, Cemented Or Uncemented, Metal/Polymer)
- Device class: 2
- Regulation: 21 CFR 888.3310
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
24 later devices descend from it; 2 cite it directly.
0 of 25 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
- K142882: G7 Freedom and Offset Liners, Freedom Head, Size 32 (2015), 17 descendants of its own
- K182321: MobileLink Acetabular Cup System (2019), 8 descendants of its own
- K963206: S-Rom Hip System - Locking Plug (1996), 6 descendants of its own
- K231873: DePuy SUMMIT Porocoat Hip Prosthesis – MR Conditional, DePuy SUMMIT DuoFix Hip Prosthesis – MR Conditional, DePuy SUMMIT Cemented Hip Prosthesis – MR Conditional, DePuy SUMMIT FX Cemented Hip Prosthesis – MR Conditional, DePuy SUMMIT Basic Press-Fit Hip Prosthesis – MR Conditional (2024), 5 descendants of its own
- K192559: Acetabular Bone Screws (for MobileLink Acetabular Cup System) (2019), 4 descendants of its own

Source page: https://510kreport.com/device/K870271
Methodology: https://510kreport.com/methodology