Yes, reherniation is more common after certain types of spine surgery. Microdiscectomy carries the highest documented reherniation rate among common spinal procedures, while fusion-based surgeries and total disc replacement tend to show lower rates at the treated level. In this article, we explore how surgical technique, anatomy, and patient factors all shape reherniation risk.
Reherniation is the recurrence of disc material pushing through the outer ring of the disc (the annulus fibrosus) at the same spinal level as a prior surgery. Studies estimate reherniation occurs in roughly 5 to 15 percent of patients following lumbar disc surgery, though rates vary significantly depending on the procedure performed, the size of the annular defect left behind, and individual patient characteristics. Most cases are identified within the first two years following the initial operation.
Reherniation is distinct from a new herniation at a different spinal level. When clinicians speak of reherniation risk, they are referring specifically to the same disc, the same level, and the same side: a recurrence rather than an unrelated new event. This distinction matters because management and prognosis differ from those of a first-time herniation.
Microdiscectomy carries a higher reherniation rate primarily because it removes only the herniated fragment while leaving the remainder of the disc intact. This approach preserves disc height and native spinal motion, which are genuine advantages, but the opening created in the annulus fibrosus does not reliably heal. That defect becomes a structural vulnerability through which residual nucleus pulposus material can escape again under the mechanical loads of daily activity.
Research has demonstrated a clear relationship between the size of the annular defect at the time of surgery and the likelihood of reherniation. Larger defects (those wider than six millimeters) are associated with reherniation rates roughly two to three times higher than smaller defects. Some spine centers now use annular closure devices such as Barricaid at the time of microdiscectomy to reduce this risk, and early clinical data suggest these devices lower reherniation rates meaningfully in high-risk patients.
Fusion surgeries, such as posterior lumbar interbody fusion (PLIF) or transforaminal lumbar interbody fusion (TLIF), carry a substantially lower risk of reherniation at the treated level because the disc space is filled with a cage and bone graft material rather than left in place. Once the disc is removed and the vertebrae are fused, there is no remaining disc material to reherniate. The trade-off is a more extensive procedure with longer recovery, adjacent segment stress over time, and permanent loss of motion at that level.
That said, fusion is not appropriate for every herniation patient. It is generally reserved for cases involving instability, deformity, recurrent herniation after prior surgery, or significant disc degeneration. A patient with a first-time simple herniation and an otherwise healthy disc is not typically a fusion candidate, even if fusion would eliminate reherniation risk at that level.
Compared to microdiscectomy, total disc replacement (TDR) offers a lower reherniation risk at the treated level while, unlike with fusion, preserving spinal motion. In TDR, the entire disc is removed and replaced with a prosthetic implant, eliminating the biological material that causes reherniation. Because no native nucleus material remains, the mechanism for recurrent herniation at the operated level is eliminated.
TDR is most commonly used in the cervical spine and less frequently in the lumbar spine for appropriately selected patients. Patient selection criteria are strict: TDR is generally not appropriate for patients with significant facet arthritis, osteoporosis, or spinal instability. For well-selected candidates, outcomes in terms of pain relief and function are comparable to fusion, with the added benefit of motion preservation and reduced adjacent-level stress over time.
Several patient and anatomical factors consistently predict higher reherniation rates across all surgical types. Body mass index is one of the strongest predictors. Patients with obesity experience greater axial loading on the disc and surrounding annular tissue, which elevates both early and late reherniation risk. Heavy manual labor and physically demanding occupations carry similar risk profiles, particularly when a patient returns to work before soft tissue healing is complete.
Age plays a nuanced role. Younger patients tend to have more hydrated, resilient disc material that generates higher intradiscal pressures, which increases the mechanical force acting on any annular defect left after surgery. Older patients with more desiccated discs may have lower acute reherniation risk but higher rates of ongoing disc degeneration and adjacent segment disease over time.
Annular defect size, as noted above, is among the most surgically modifiable risk factors. Smoking impairs disc healing and is associated with higher rates of recurrence. A history of prior ipsilateral discectomy at the same level substantially increases reherniation risk compared to a first operation, which is one reason fusion is more commonly recommended for recurrent cases.
Recurrent herniation should be treated surgically when it produces progressive neurological deficits, cauda equina syndrome (a dangerous condition that causes loss of bowel and bladder control and requires immediate medical attention), or severe and unrelenting pain that fails to respond to a structured course of conservative care. Most patients with reherniation, like most patients with a first herniation, improve meaningfully with physical therapy, targeted epidural steroid injections, anti-inflammatory medication, and activity modification over a period of several weeks.
The decision to reoperate is also shaped by the trajectory of symptoms, the duration since the prior surgery, and the degree of residual disc height. When a revision is performed after a failed microdiscectomy, the choice between repeat discectomy and fusion is individualized. Repeat discectomy is generally preferred when disc height is preserved and instability is absent. Fusion is favored when multiple prior surgeries have already been performed, when disc degeneration is advanced, or when instability is a contributing factor.
Not necessarily. Reherniation reflects the structural vulnerability of the remaining disc, not a technical error in most cases. Many patients with reherniation have excellent long-term outcomes with appropriate management.
Most often within the first year, with the highest concentration of cases in the first six months following discectomy. Risk does not disappear entirely after that window but decreases substantially over time.
Yes. A structured rehabilitation program that strengthens core stabilizers and teaches proper movement mechanics reduces mechanical stress on healing annular tissue and lowers reherniation risk in the postoperative period.
Yes. Lumbar discs bear significantly greater axial loads than cervical discs, and lumbar reherniation rates are generally higher than cervical rates following comparable procedures.
This is worth discussing with your surgeon. Clinical evidence supports annular closure in patients with defects wider than six millimeters, and several devices have received regulatory clearance for this indication. Not every surgeon offers this option, but it is a reasonable question to raise in high-risk cases.
Although discectomy and microdiscectomy surgery are generally very successful procedures, a hole is left in the outer wall of the disc. Patients with a large hole in the outer ring of the disc are more than twice as likely to experience reherniations after surgery. These reherniations often require additional surgery such as spinal fusion surgery. Barricaid is a bone-anchored device designed to reduce the likelihood of reherniation by closing the large hole often left in the spinal disc after discectomy. In a large-scale study, 95 percent of Barricaid patients did not undergo a reoperation due to reherniation in the 2-year study timeframe. This treatment is done immediately following the discectomy—during the same operation—and does not require any additional incisions or time in the hospital.
If you have any questions about the Barricaid treatment or how to get access to Barricaid, ask your doctor or contact us today.
For full benefit/risk information, please visit: https://www.barricaid.com/instructions.