# K052086: Encore Reverse Shoulder Prosthesis Humeral Stem Adapter

- Pathway: 510(k) (Special)
- Applicant: Encore Medical, Inc.
- Decided: Aug 31, 2005 after 29 days
- Product code: PHX (Shoulder Prosthesis, Reverse Configuration)
- Device class: 2
- Regulation: 21 CFR 888.3660
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K041066 (2005). 2 ancestors in all.
201 later devices descend from it; 2 cite it directly.
1 of 204 devices in its family (counting itself) has a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K041066: Encore Reverse Shoulder Prosthesis, Encore Medical L.P. (2005) Summary page 1.
- K051075: Encore Reverse Shoulder Prosthesis, Encore Medical L.P. (2005) Summary page 1.

## Most influential descendants
- K063569: Equinoxe Reverse Shoulder System (2007), 190 descendants of its own
- K073688: Equinoxe Reverse Shoulder System Fracture Humeral Adapter Tray and Locking Screw (2008), 177 descendants of its own
- K080642: Comprehensive Reverse Shoulder (2008), 172 descendants of its own
- K110599: Aequalis Ascend Modular Reverse Shoulder System (2011), 108 descendants of its own
- K112615: Aequalis Ascend Modular Reverse Shoulder System (2011), 97 descendants of its own

## Indications for use
The Encore Reverse Shoulder Prosthesis (RSP) is intended for use in patients with a grossly rotator cuff deficient shoulder joint with severe arthropathy or a previously failed joint replacement with a grossly rotator cuff deficient shoulder joint. The patient's joint must be anatomically and structurally suited to receive the selected implant(s), and a functional deltoid muscle is necessary to use the device. The glenoid baseplate is intended for cementless application with the addition of screws for fixation. The humeral stem is intended for cemented use only. During primary surgery, after the humerus is prepared for the RSP humeral stem, if the glenoid bone stock appears "insufficient' to bear the load of the glenoid baseplate, a RSP humeral stem adapter can be used to convert the RSP humeral stem to a hemiarthroplasty prosthesis. During revision surgery of an RSP, if the glenoid bone stock appears to be "insufficient" to bear the load of the glenoid baseplate device; a RSP Humeral Stem Adapter is used to convert the RSP device to a hemiarthroplasty prosthesis.

Source page: https://510kreport.com/device/K052086
Methodology: https://510kreport.com/methodology