# K031963: Conserve Plus Spiked Acetabular Shells and Conserve Total 56MM Femoral Head

- Pathway: 510(k) (Special)
- Applicant: Wrightmedicaltechnologyinc
- Decided: Oct 31, 2003 after 128 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.
118 later devices descend from it; 2 cite it directly.
0 of 119 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. The FDA summary names its predicate without a number.
- (no number) Metal TRANSCEND Articulation Monoblock Shell: named in the summary without a submission number
- (no number) Metal TRANSCEND Femoral Head (Larger Sizes): named in the summary without a submission number

## Most influential descendants
- K042037: M2A Magnum System (2004), 116 descendants of its own
- K053536: Durom Acetabular Component and Metasul LDH Large Diameter Heads (2006), 74 descendants of its own
- K071723: Zimmer Porolock Mis Stem (2008), 73 descendants of its own
- K123392: Avenir Muller Stem (2013), 41 descendants of its own
- K110400: Taperloc Complete Microplasty Stem (2011), 34 descendants of its own

## Indications for use
The CONSERVE® Plus Spiked Shells and CONSERVE® Total 56mm Femoral Head are indicated for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions: 1. non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusio acetabuli, and painful hip dysplasia; 2. inflammatory degenerative joint disease such as rheumatoid arthritis; 3. correction of functional deformity; and, 4. revision procedures where other treatments or devices have failed The CONSERVE® Plus Spiked Shells and CONSERVE® Total 56mm Femoral Head are intended for single patient use only.

Source page: https://510kreport.com/device/K031963
Methodology: https://510kreport.com/methodology