# K972791: Encore Linear Hip

- Pathway: 510(k) (Traditional)
- Applicant: Encore Orthopedics, Inc.
- Decided: Jan 12, 1998 after 168 days
- Product code: JDI (Prosthesis, Hip, Semi-Constrained, Metal/Polymer, Cemented)
- Device class: 2
- Regulation: 21 CFR 888.3350
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
7 later devices descend from it; 2 cite it directly.
0 of 8 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 no predicate by number.

## Most influential descendants
- K141327: Minima S System (2014), 5 descendants of its own
- K140975: Mastersl Femoral Stem (2014), 4 descendants of its own
- K143509: MasterSL femoral stem (2015), 3 descendants of its own
- K150855: H-MAX S Femoral Hip System (2015), 2 descendants of its own
- K160011: H-Max S stem (2016), 1 descendant of its own

## Indications for use
The indications for use of the total hip replacement prosthesis include: noninflammatory degenerative joint disease including osteoarthritis and avascular necrosis; rheumatoid arthritis; correction of functional deformity; revision procedures where other treatments or devices have failed; and treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement, which is unmanageable using other techniques. This stem is intended to be used with cement.

Source page: https://510kreport.com/device/K972791
Methodology: https://510kreport.com/methodology