Minuteman Interspinous Spacer: A Minimally Invasive Solution for Spinal Stenosis and Instability
- Dr John Hong
- Mar 3
- 3 min read
Updated: Mar 10
By John K. Hong, M.D. | 2/25/2025
Chronic low back pain, spinal stenosis, and degenerative spinal conditions can severely impact quality of life. While conservative treatments like physical therapy, medications, and injections help many patients, some continue to experience debilitating pain and functional limitations. The Minuteman Interspinous Spacer offers a minimally invasive alternative to traditional fusion surgery, providing stabilization and relief for patients with spinal stenosis and instability.What is the Minuteman Interspinous Spacer?
The Minuteman Interspinous Spacer, developed by Spinal Simplicity, is a posteriorly implanted, minimally invasive spinal fusion device. It is designed to stabilize the spine by anchoring between the spinous processes, reducing excessive motion and decompressing neural structures. Unlike traditional spinal fusion, the Minuteman procedure requires a small incision, minimal tissue disruption, and can be performed in an outpatient setting.
The device is made of titanium alloy and includes a lateral plate with fixation screws that secure the implant in place, promoting spinal stability and eventual fusion through bone growth.
Clinical Indications
The Minuteman Spacer is primarily indicated for patients with:
Lumbar spinal stenosis – narrowing of the spinal canal leading to nerve compression and pain.
Degenerative disc disease – progressive disc degeneration causing instability and back pain.
Spondylolisthesis (Grade I or II) – forward slippage of a vertebra that contributes to spinal instability.
Failed conservative treatment – patients who have not found relief with physical therapy, medications, or injections.
Adjacent segment disease (ASD) – patients who have had prior spinal fusion and are experiencing degeneration at adjacent levels.
The Procedure
The Minuteman procedure is performed through a lateral approach, typically under local anesthesia with sedation. The steps include:
Small incision – A small incision is made in the flank area.
Muscle dilation – Unlike open surgery, no major muscle detachment is needed.
Device placement – The spacer is inserted between the spinous processes and secured with screws.
Closure – The incision is closed with minimal suturing.
The entire procedure can be completed in under an hour and is usually done on an outpatient basis.
Benefits of the Minuteman Spacer
Minimally invasive – Smaller incision, less blood loss, and reduced risk of complications.
Faster recovery – Many patients resume light activities within a few days.
Preservation of anatomy – Avoids major disruption of muscles and ligaments.
Reduced hospital stay – Can be performed in an outpatient setting, reducing overall costs.
Pain relief and improved function – Stabilizes the spine while alleviating nerve compression.
Potential Risks and Considerations
As with any medical procedure, there are risks, including:
Infection
Device migration or loosening
Failure to achieve fusion
Persistent pain or recurrence of symptoms
However, patient selection is crucial in determining the success of the procedure. Proper preoperative imaging and evaluation by an experienced spine physician help optimize outcomes.
Who is a Candidate for the Minuteman Spacer?
The ideal candidate is someone experiencing chronic back pain and instability due to spinal stenosis, spondylolisthesis, or degenerative disc disease, but who wishes to avoid traditional fusion surgery. Patients should have failed conservative treatments and not have severe osteoporosis or other contraindications that may prevent proper device fixation.
Conclusion
The Minuteman Interspinous Spacer represents an exciting advancement in minimally invasive spine care. It offers a less disruptive, faster-recovery alternative for patients with lumbar spinal stenosis and instability who are not responding to conservative treatments. If you or someone you know is struggling with persistent back pain, consult with a spine specialist to see if the Minuteman Spacer is a viable option.
For more information or to schedule a consultation, contact our clinic today at (435) 714-7180. Parkview has offices in Park City and Salt Lake City to conveniently serve you!