Which spine cage stays put? study compares expandable vs static implants

NCT ID NCT05536453

Completed Knowledge-focused Sponsor: Spine and Scoliosis Research Associates Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked back at 465 patients who had lumbar spine fusion surgery for degenerative disc disease. Researchers compared two types of implants (expandable cages and static cages) to see which ones were less likely to sink into the bone after surgery. The goal is to help surgeons choose the best device to reduce complications and improve patient outcomes.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Lumbar interbody fusion devices (expandable and static cages)
What this could lead to: If successful, this study could help surgeons choose better-designed spine implants that are less likely to sink into the bone after fusion surgery.
What could go wrong: This is a retrospective review of past surgeries, not a controlled trial, so results may be influenced by patient selection or surgeon technique. The findings may not apply to all patients or newer devices.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

intervertebral disk degenerative disorder lumbar disk degenerative disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

DEGENERATIVE DISC DISEASE (DDD)

Contacts and locations

Locations

Carolina NeuroSurgery & Spine Associates

Charlotte, North Carolina, 28204, United States
New York University Langone Health

New York, New York, 10016, United States
Rothman Orthopaedic Institute

Bensalem, Pennsylvania, 19020, United States
University of California San Francisco

San Francisco, California, 94143, United States

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