# K171934: Birmingham Hip (BH) Dual Mobility Insert

- Pathway: 510(k) (Traditional)
- Applicant: Smith & Nephew, Inc.
- Decided: Nov 30, 2017 after 155 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
Longest line of descent: 4 generations back to K991990 (1999). 5 ancestors in all.
9 later devices descend from it; 3 cite it directly.
0 of 15 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K110135: Polarcup Dual Mobility System, Smith & Nephew, Inc. (2011) Summary page 4.
- K070278: Polarcup Dual Mobility System, Plus Orthopedics AG (2007) Summary page 4.

## Most influential descendants
- K191002: OR3O Dual Mobility System (2019), 5 descendants of its own
- K220959: OR3O Dual Mobility System (2022), 3 descendants of its own
- K211176: Smith & Nephew Hip Systems (2022), 3 descendants of its own
- K232667: OR3O Dual Mobility Liners (2023), 1 descendant of its own
- K253948: Momentum Acetabular Cup System (2026), 0 descendants of its own

## Indications for use
The BIRMINGHAM HIP Dual Mobility Insert is intended for use in BIRMINGHAM HIP Resurfacing (BHR) System revision surgeries in cases where an acetabular cup is retained and the femoral component revised.

Source page: https://510kreport.com/device/K171934
Methodology: https://510kreport.com/methodology