# K210308: EMPOWR Porous Femur with HAnano SurfaceTM

- Pathway: 510(k) (Traditional)
- Applicant: Encore Medical L.P.
- Decided: Mar 30, 2021 after 55 days
- Product code: MBH (Prosthesis, Knee, Patello/Femorotibial, Semi-Constrained, Uncemented, Porous, Coated, Polymer/Metal/Polymer)
- Device class: 2
- Regulation: 21 CFR 888.3565
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 10 generations back to K810258 (1981). 44 ancestors in all.
No later device cites it as a predicate yet.
0 of 45 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K171991: EMPOWR Porous Knee System, Encore Medical L.P. (2017) Summary page 4.

## Indications for use
The DJO EMPOWR POROUS FEMUR WITH HAnano Surface™ is indicated for use in total knee arthroplasty patients, receiving total joint replacement because of disability or suffering due to: degenerative, post-traumatic or rheumatoid arthritis; avascular necrosis of the femoral condyle; post-traumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectomy; moderate valgus, varus or flexion deformities; treatment of fractures that are unmanageable using other techniques. This device may also be indicated in the salvage of previously failed surgical attempts. The device is intended for uncemented applications. While knee replacements are not intended to withstand activity levels and loads of normal healthy bone, they are a means of restoring mobility and reducing pain for many patients.

Source page: https://510kreport.com/device/K210308
Methodology: https://510kreport.com/methodology