# K173776: BIOLOX delta Option and Extra-long Heads

- Pathway: 510(k) (Traditional)
- Applicant: Microport Orthopedics, Inc.
- Decided: Jul 6, 2018 after 206 days
- Product code: LZO (Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Polymer, Cemented Or Non-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: 2 generations back to K072656 (2008). 2 ancestors in all.
2 later devices descend from it; 2 cite it directly.
0 of 5 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K130376: Dynasty Acetabular System with Ceramic, Wrightmedicaltechnologyinc (2013) Summary page 4.
- K072656: Dynasty Ceramic Femoral Head, Wrightmedicaltechnologyinc (2008) Summary page 4.

## Most influential descendants
- K240046: Ethylene Oxide Sterilization Supplier Change for MPO Hips (2024), 0 descendants of its own
- K240452: Ceramic Femoral Head (2024), 0 descendants of its own

## Indications for use
MicroPort total hip systems are intended for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions: 1. non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusio acetabuli, and painful hip dysplasia; 2. inflammatory degenerative joint disease such as rheumatoid arthritis; 3. correction of functional deformity; and, 4. revision procedures where other treatments or devices have failed.

Source page: https://510kreport.com/device/K173776
Methodology: https://510kreport.com/methodology