510(k) · Cleared
ClearedModification to: Xia Stainless Steel System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Stryker Spine · KWP Appliance, Fixation, Spinal Interlaminal
Cleared on Aug 18, 2005 as substantially equivalent to K012870 (Howmedica Osteonics Corp., 2001) and 1 other predicate after a 28-day review. Its family tree reaches back 1 generation to 2001.
- Decided
- Aug 18, 2005
- Review
- 28 days
- Class
- Class II
- Product code
- KWP
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 1 generation to K012870 (2001). 2 ancestors in all. No later device cites it as a predicate yet.
- Root · 1 generation backK012870 Xia Stainless Steel SystemHowmedica Osteonics Corp. · 2001
- This deviceK051973 Modification to: Xia Stainless Steel SystemStryker Spine · 2005
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K012870 | Xia Stainless Steel System | Howmedica Osteonics Corp. | 2001 | — |
| 0 (this device) | K051973 | Modification to: Xia Stainless Steel System | Stryker Spine | 2005 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2003 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in KWP? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
- Candidate predicates for a device like this, rankedin the report
- Recall history across each candidate’s familyin the report
What was it cleared against? (2)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K012870 | Xia Stainless Steel SystemSummary page 2…t of Teehnolollical Comparison: The subject components share the same intended use and basic design concepts as that of the predicate device: Xia Stainless Steel System (K012870 and K031090). Mechanical testing also demonstrated comparable mechanical properties to the predicate device.… | 2001 |
| * | K031090 | Modification to Xia Stainless Steel SystemSummary page 2…ollical Comparison: The subject components share the same intended use and basic design concepts as that of the predicate device: Xia Stainless Steel System (K012870 and K031090). Mechanical testing also demonstrated comparable mechanical properties to the predicate device.… | 2003 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- None of the 2 ancestors has a recall.
- 9 other devices also cite its predicate K012870.
How does its category compare?
All KWP devicesKWP Appliance, Fixation, Spinal Interlaminal: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · KWP
9in 2015
2026 to Oct 25, outlined.
Median 510(k) review, days · KWP
113in 2015
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KWP
2in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KWP
494in 2025
MAUDE reports naming product code KWP, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 14 | 96 | 2 | 210 |
| 2008 | 13 | 50 | 1 | 594 |
| 2009 | 12 | 89 | 23 | 682 |
| 2010 | 14 | 186 | 2 | 474 |
| 2011 | 12 | 67 | 6 | 792 |
| 2012 | 18 | 112 | 1 | 918 |
| 2013 | 12 | 99 | 3 | 1,090 |
| 2014 | 13 | 138 | 0 | 1,022 |
| 2015 | 9 | 113 | 1 | 1,348 |
| 2016 | 0 | — | 3 | 1,379 |
| 2017 | 0 | — | 0 | 864 |
| 2018 | 0 | — | 1 | 657 |
| 2019 | 0 | — | 2 | 518 |
| 2020 | 0 | — | 0 | 796 |
| 2021 | 0 | — | 0 | 525 |
| 2022 | 0 | — | 2 | 335 |
| 2023 | 0 | — | 0 | 332 |
| 2024 | 0 | — | 0 | 436 |
| 2025 | 0 | — | 0 | 494 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The Xia Stainless Steel System is intended for use in the noncervical spine. When used as a pedicle screw fixation system, the Xia Stainless Steel System is intended for patients: (a) having severe spondylolisthesis (Grades 3 and 4) at the fifth lumbar - first sacral (L5-S1) vertebral joint; (b) who are receiving fusions using autogenous bone graft only; (c) who are having the device fixed or attached to the lumbar and sacral spine; and (d) who are…
Read the full statement (229 words)
The Xia Stainless Steel System is intended for use in the noncervical spine. When used as a pedicle screw fixation system, the Xia Stainless Steel System is intended for patients: (a) having severe spondylolisthesis (Grades 3 and 4) at the fifth lumbar - first sacral (L5-S1) vertebral joint; (b) who are receiving fusions using autogenous bone graft only; (c) who are having the device fixed or attached to the lumbar and sacral spine; and (d) who are having the device removed after the development of a solid fusion mass.
When used as a pedicle screw fixation system, the Xia Stainless Steel System is also intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis).
When used as an anterior screw fixation system or a posterior hook and sacral/iliac screw fixation system, the Xia Stainless Steel System is indicated for patients with degenerative disc disease which is defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies, spondylolisthesis, fracture, spinal stenosis, spinal deformities such as scoliosis, kyphosis, lordosis, tumor, pseudoarthrosis or revision of failed fusion attempts.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K051973 · printed Nov 6, 2026
Cite this page
510(k) Report. “K051973: Modification to: Xia Stainless Steel System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K051973
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026