# K972893: Partnership Revision  Femoral Stems

- Pathway: 510(k) (Traditional)
- Applicant: Howmedica Corp.
- Decided: Nov 3, 1997 after 90 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 K921308 (1994). 4 ancestors in all.
153 later devices descend from it; 5 cite it directly.
0 of 158 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K944592: Precision Osteolock Femoral Component, Howmedica Corp. (1995) Summary page 1.
- K941141: Precision Ostelock  SP Femoral Component, Howmedica Corp. (1994) Summary page 1.
- K951671: Osteonics Restoration Monolithic II Slotted Hip Stem Series, Osteonics Corp. (1995) Summary page 1.
- K921308: HG Multilock Hip Prosthesis W/ TI-Nidium, Zimmer, Inc. (1994) Summary page 1.

## Cited in the summary but kept off the family tree
- K940307: Howmedica Straight Stem Femoral Component, Howmedica, Inc. (1995). Not matched in our reading of the summary (scans can blur digits), so it is kept off the family tree

## Most influential descendants
- K983404: Type 3 Femoral Components (1998), 102 descendants of its own
- K013106: 2 Piece Modular Hip Stem (2002), 101 descendants of its own
- K001449: Trident Acetabular Shells: PS (2000), 69 descendants of its own
- K013676: Trident Hemispherical Acetabular Shells (2001), 68 descendants of its own
- K081171: Tritanium Acetabular Shell System (2008), 61 descendants of its own

## Indications for use
The Partnership Revision Femoral Stems consist of a family of Titanium femoral stems with Titanium plasma spray coating that are intended to be used with Howmedica V40™ femoral heads, Howmedica Unipolar and Bipolar components, and Howmedica acetabular components in primary and revision total hip arthroplasty. These femoral stems are designed to be press fit into the proximal femur. They do not achieve fixation by biological ingrowth.

Source page: https://510kreport.com/device/K972893
Methodology: https://510kreport.com/methodology