# K022520: U2 Acetabular Cup

- Pathway: 510(k) (Traditional)
- Applicant: United Orthopedic Corp.
- Decided: Feb 25, 2003 after 210 days
- Product code: LPH (Prosthesis, Hip, Semi-Constrained, Metal/Polymer, Porous Uncemented)
- Device class: 2
- Regulation: 21 CFR 888.3358
- 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 K994078 (2000). 1 ancestor in all.
14 later devices descend from it; 5 cite it directly.
0 of 16 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K994078: U1 Hip System, United Orthopedic Corp. (2000) Summary page 1.

## Most influential descendants
- K111546: U2 Hip System (2011), 13 descendants of its own
- K122185: U-Motion II Acetabular System (2013), 7 descendants of its own
- K163441: Locking Cage, Full XPE Cup (2017), 3 descendants of its own
- K132455: U-Motion II PS+ Cup (2013), 3 descendants of its own
- K122504: Femoral Heads, 2.5 and 7.5 MM Neck Length (2012), 3 descendants of its own

## Indications for use
This device is indicated in hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions: Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusio acetabuli, and painful hip dysplasia; Inflammatory degenerative joint disease such as rheumatoid arthritis; Correction of function 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 that are unmanageable using other techniques.

Source page: https://510kreport.com/device/K022520
Methodology: https://510kreport.com/methodology