For patients with cervical adjacent segment disease following a prior fusion, intra-annular fibrin injection offers a biologic disc repair path that does not require extending the fused construct. In this illustrative composite case, a retired Army helicopter crew chief reduced neck pain from 7/10 to 3/10, regained driving tolerance beyond one hour, and avoided revision multi-level cervical fusion. Individual outcomes vary.

This case fits within the broader clinical picture of adjacent segment disease — one of the most consistent reasons post-fusion patients seek a non-surgical alternative to revision surgery. It also connects to the patterns documented in our lumbar post-fusion fibrin case and our resources on failed back surgery syndrome.

What Is Cervical Adjacent Segment Disease and Why Does It Lead to Revision Surgery?

Adjacent segment disease is the accelerated degeneration of spinal discs immediately above or below a prior fusion. When one cervical segment is fused, the segments next to it absorb additional mechanical load — and over time, that increased stress drives annular tearing and disc breakdown. Revision surgery rates for adjacent segment disease can exceed 20% within ten years of the original fusion, and revision procedures extend the fused construct, compounding the same mechanical dynamic further.

In this illustrative pattern, the patient’s prior C5-C6 fusion resolved his original radiculopathy, but within four years he developed new progressive axial neck pain and stiffness at C4-C5 and C6-C7 — the segments immediately adjacent to the fused level. Imaging confirmed degenerative changes and annular compromise at both adjacent segments. The clinical team recommended revision multi-level cervical fusion. He declined.

What Were the Baseline Symptoms Before the Fibrin Procedure?

At presentation, the full symptom burden reflected years of progressive adjacent segment loading layered on top of a military service history that included thousands of flight hours with sustained whole-body vibration, heavy helmet load, and prolonged awkward neck postures.

• Neck pain (VAS-equivalent): 6–7/10 daily, peaks at 8/10
• Driving tolerance: 30 minutes maximum before pain forced a stop
• Continuous sleep: under 2 hours per stretch; unable to maintain neutral neck position
• Daily medications: NSAIDs, muscle relaxants, intermittent neuropathic agents
• Work status: medically retired; unable to sustain desk work
• Prior interventions: cervical fusion at C5-C6, multiple epidural steroid injections, 12+ months of physical therapy, chiropractic care, chronic pain management program — all without sustained relief

How Was the Pain Source Confirmed Before Treatment?

The diagnostic challenge was not identifying that cervical degeneration existed — imaging made that clear. The clinical question was whether the pain was driven primarily by discogenic pathology at C4-C5 and C6-C7, or by facet joints, myofascial structures, or hardware-related factors. That distinction is what determines whether biologic disc repair is the appropriate next step.

The diagnostic plan combined high-resolution cervical MRI with provocative cervical discography. Discography confirmed concordant pain reproduction at C4-C5 and C6-C7, with intact patterns at non-adjacent levels. MRI demonstrated annular tears and Modic-type endplate changes at the same two segments. With discogenic pain confirmed at both adjacent segments, intra-annular fibrin injection became a defensible biologic alternative to extending the fusion construct.

It is worth noting that prior cervical epidural steroid injections had failed to provide sustained relief — a finding consistent with the AAFP systematic review conclusion that epidural steroids are not effective for chronic axial cervical or low back pain in isolation. Physical therapy had plateaued. Neither of those outcomes was a failure of the patient’s effort; they were diagnostic signals pointing toward a discogenic source that those treatments are not designed to address.

For patients navigating similar decisions, our guide on how to evaluate spine repair options after surgery walks through the clinical framework used to assess whether biologic disc repair is appropriate after a prior fusion.

How Was the Fibrin Procedure Performed at This Level?

The procedure was performed as an outpatient intra-annular fibrin injection under fluoroscopic imaging guidance, with light sedation. An FDA-approved fibrin sealant was delivered through a thin catheter into the identified annular tears at C4-C5 and C6-C7. Total procedure time was approximately one hour. The patient was monitored briefly post-procedure and discharged the same day. No incisions were required.

The fibrin sealant used is FDA-approved as a sealant. Specific clinical applications, candidacy, and outcomes vary by patient.

What Did the Recovery Timeline Look Like?

Recovery followed a structured protocol designed to protect the treated discs while the biologic material integrated and healing progressed.

• Weeks 0–2: Reduced activity; no overhead lifting; no prolonged seated screen time; neutral cervical positioning during sleep
• Weeks 2–6: Gradual return to activities of daily living; isometric deep neck flexor work; scapular stabilization exercises
• Months 2–4: Progressive cervical and thoracic mobility work; postural retraining specific to seated and driving postures
• Months 4–12: Continued strengthening; monitoring for any change in symptom pattern at the fused or adjacent segments

What Outcomes Were Tracked at Follow-Up?

Among the outcomes tracked in this illustrative pattern at 6-month and 12-month follow-up intervals — individual outcomes vary and these figures represent a composite presentation, not a guaranteed result:

• Neck pain reduced from 7/10 to 3/10 at 6 months
• Driving tolerance increased from 30 minutes to 60+ minutes
• Daily pain medication (NSAIDs, muscle relaxants) discontinued at 6 months
• Returned to part-time desk work at month 4
• Sleep continuity improved; able to maintain neutral neck position for 4+ hours
• Revision multi-level cervical fusion avoided

For context, among the most-tracked outcomes in the broader fibrin procedure registry — covering over 7,000 procedures with long-term follow-up — the reported success rate is 83%, and 70% patient satisfaction was recorded at 2+ year follow-up. Individual outcomes vary. These are population-level figures, not personal guarantees.

For patients who have already undergone spinal surgery and are weighing their next step, our resources on evaluating regenerative spine care after failed surgery and FAQ: regenerative spine care after prior surgery provide additional clinical context.

Is This Approach Available to Veterans Through the VA?

Under the Mission Act, intra-annular fibrin injection may be a covered VA benefit when the VA cannot provide timely or appropriate care. VA coverage is determined case-by-case under Mission Act criteria by the VA, not by Valor Spine. Valor coordinates the referral process directly with VA referral coordinators — the patient does not have to navigate the paperwork alone.

For veterans whose VA facility has recommended revision fusion or whose conservative care through the VA has stalled, a clinical evaluation is the only way to know for certain whether the fibrin procedure is a viable alternative. The Valor team handles VA coordination directly so that a paperwork barrier does not become the reason a veteran stays in pain.

65.6% of veterans report pain in the past 3 months, according to VA and VHA epidemiology data. Chronic cervical pain following military service — particularly for crew chiefs, pilots, and other occupations with sustained postural loading — is a recognized and undertreated burden.

Who Is a Candidate for Biologic Disc Repair After a Prior Cervical Fusion?

Candidacy for intra-annular fibrin injection after a prior cervical fusion depends on whether the pain source is confirmed as discogenic at the adjacent segments. The clinical evaluation required to answer that question includes imaging review, symptom history, and in many cases provocative discography. A clinical evaluation is the only way to know for certain.

Patients who have not found sustained relief from physical therapy, cervical epidural steroid injections, or other conservative interventions — and who have been told revision fusion is the next step — are the profile that most consistently presents for evaluation. That does not mean every such patient is a candidate; it means the evaluation is worth having.

For a broader comparison of where biologic disc repair sits relative to other non-surgical options, see our guide on how to evaluate non-surgical disc repair when surgery has failed.

Frequently Asked Questions

What is cervical adjacent segment disease?

Cervical adjacent segment disease is accelerated degeneration of the discs directly above or below a prior cervical fusion. The fused segment transfers mechanical load to neighboring levels, which can drive annular tearing and disc breakdown over time. It is a recognized consequence of rigid cervical fixation, with revision surgery rates that can exceed 20% within ten years of the original procedure.

Can intra-annular fibrin injection be performed on a patient who already had a cervical fusion?

For patients with confirmed discogenic pain at levels adjacent to a prior fusion — where the fused segment itself is intact — biologic disc repair at the adjacent levels is a documented approach. Candidacy depends on the specific anatomy, the nature of the annular tears, and clinical evaluation findings. A clinical evaluation is the only way to know for certain.

How is the pain source confirmed before the fibrin procedure?

High-resolution MRI and provocative cervical discography are the primary diagnostic tools. Discography confirms whether pain reproduction is concordant at the suspected disc levels. This distinction — discogenic versus facet, myofascial, or hardware-related pain — is what determines whether biologic disc repair is the appropriate treatment approach.

What does the recovery period look like after the fibrin procedure in the cervical spine?

The immediate post-procedure period involves activity reduction, neutral cervical positioning, and avoidance of overhead lifting and prolonged screen time. Progressive rehabilitation — including deep neck flexor work, scapular stabilization, and postural retraining — begins in weeks two through six and continues through month twelve. The full recovery arc typically spans six to twelve months, with measurable symptom improvement tracked at follow-up intervals.

Does the VA cover this procedure for veterans with adjacent segment disease?

The procedure may be a covered VA benefit under the Mission Act when the VA cannot provide timely or appropriate care. Coverage is determined case-by-case by the VA. Valor Spine works directly with VA referral coordinators and handles the paperwork on the patient’s behalf. VA coverage is not guaranteed; the VA makes that determination based on the individual case.

What happens if cervical adjacent segment disease is left untreated?

Progressive adjacent segment disease typically leads to worsening axial neck pain, reduced range of motion, and in some cases, new radicular symptoms as the disc continues to degenerate. Revision fusion is often the surgical recommendation at that stage. For patients who are not ready to accept revision surgery, a clinical evaluation to determine discogenic candidacy is the appropriate next step before the degeneration advances further.

This content is for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. It is not a substitute for evaluation by a qualified physician. Treatment decisions depend on your individual medical history and clinical findings. Schedule a consultation to discuss whether the procedure is right for you.

The fibrin sealant used in the procedure is FDA-approved as a sealant. Specific clinical applications, candidacy, and outcomes vary by patient.

VA coverage is determined case-by-case under Mission Act criteria by the VA, not by Valor Spine. Valor coordinates the referral process; the VA makes coverage decisions.