# K172833: E-XPE Acetabular Components and U-Motion II Acetabular Cup

- Pathway: 510(k) (Traditional)
- Applicant: United Orthopedic Corporation
- Decided: Jun 12, 2018 after 266 days
- Product code: OQI (Hip, Semi-Constrained, Cemented, Metal/Ceramic/Polymer + Additive, Porous Uncemented)
- Device class: 2
- Regulation: 21 CFR 888.3353
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 12 generations back to K810258 (1981). 218 ancestors in all.
2 later devices descend from it; 1 cites it directly.
0 of 220 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K122185: U-Motion II Acetabular System, United Orthopedic Corp. (2013) Summary page 5.
- K111481: Corin Trinity Acetabular System Ecima Liners, Corin USA (2012) Summary page 5.
- K130365: X-Alt Highly Cross Linked VE Acetabular Liner, Encore Medical L.P. (2013) Summary page 5.
- K163441: Locking Cage, Full XPE Cup, United Orthopedic Corporation (2017) Summary page 5.
- K050262: U2 Acetabular Component, United Orthopedic Corp. (2005) Summary page 5.
- K111546: U2 Hip System, United Orthopedic Corp. (2011) Summary page 5.

## Most influential descendants
- K221149: U-Motion II Acetabular System-Extension line (2023), 1 descendant of its own
- K253948: Momentum Acetabular Cup System (2026), 0 descendants of its own

## Indications for use
For E-XPE Cup Liner and U-Motion II Acetabular Cup The device is used for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions: 1. Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis. 2. Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure. 3. Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results. 4. Correction of functional deformity. 5. Treatment of nonunion femoral neck and trochanteric fracture of the proximal femur with head involvement that is unmanageable using other techniques. This device is a single use implant and intended for cementless use only. For E-XPE Cemented Cup 1. Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, and painful hip dysplasia; 2. Inflammatory degenerative joint disease such as rheumatoid arthritis; 3. Correction of function deformity; 4. Revision procedures where other treatments or devices have failed; 5. Treatment of nonunion and femoral neck fractures of the proximal femur with head involvement that is unmanageable using other techniques. This device is a single use implant and intended for cemented use only.

Source page: https://510kreport.com/device/K172833
Methodology: https://510kreport.com/methodology