# K871453: Zweymueller-SL Hip Prosthesis Stem

- Pathway: 510(k) (Traditional)
- Applicant: Allo Pro Corp.
- Decided: Jul 13, 1987 after 91 days
- Product code: KWA (Prosthesis, Hip, Semi-Constrained (Metal Uncemented Acetabular Component))
- Device class: 3
- Regulation: 21 CFR 888.3330
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
284 later devices descend from it; 1 cites it directly.
0 of 285 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
- K962101: Zweymueller SL Femoral Hip Stem (1996), 283 descendants of its own
- K030373: Alloclassic Zweymueller SL/SLL Femoral Stem (2003), 278 descendants of its own
- K042344: Excia Total Hip System (2005), 198 descendants of its own
- K060918: Excia Total Hip System 12/14 Trunnion with Ceramic Head (2006), 90 descendants of its own
- K060437: Excia Total Hip System with U-Cap (2006), 90 descendants of its own

Source page: https://510kreport.com/device/K871453
Methodology: https://510kreport.com/methodology