How Many IDD Therapy Sessions Do You Need for Disc Herniation?

Most patients who ask this question have already been through the standard route: painkillers, rest, maybe a course of physiotherapy and they are still in pain.

When IDD Therapy is recommended, one of the first things they want to know is how long it takes, how many sessions are involved, and what they can realistically expect along the way.

This guide answers all of those questions directly, based on clinical protocols and the evidence behind them.

What the Standard IDD Therapy Protocol Looks Like

IDD Therapy is not a single-session fix. It is a structured, progressive treatment course designed to allow the disc to decompress gradually, rehydrate, and begin to heal over a sustained period of time.

The standard recommended protocol consists of 20 sessions delivered three to five times per week over a six to eight week period.

Each session lasts between 25 and 30 minutes and is typically preceded by soft tissue preparation such as targeted exercises, manual therapy, or FAR infrared heat applied to the affected spinal segment to improve local circulation before decompression begins.

For more complex or long-standing disc herniations, a longer protocol of 25 to 30 sessions is often clinically appropriate.

A 2024 review published in Cureus (PMC) found that the strongest patient outcomes were associated with 25 sessions structured as 20 core sessions over ten weeks followed by five maintenance sessions over the subsequent five months.

The 2024 to 2025 cohort study published in Scientific Archives used a 30-session protocol for all participants with MRI-confirmed disc bulges and herniations, reporting significant reductions in both pain scores and disability scores on completion.

Protocol Type	Sessions	Frequency	Duration
Standard	20 sessions	3 to 5 times per week	6 to 8 weeks
Extended (complex cases)	25 to 30 sessions	3 to 5 times per week	8 to 10 weeks
Maintenance phase	5 additional sessions	Weekly or fortnightly	Over 5 months
Session length	25 to 30 minutes each	Per visit	Per visit

At Charm Chiropractic in Broadstairs, the number of sessions recommended for each patient is determined following a thorough clinical assessment, with the severity of the disc condition, duration of symptoms, and response to previous treatment all factored into the plan.

Why IDD Therapy Requires Multiple Sessions, Not Just One or Two

Understanding why a full course of sessions is necessary requires a brief look at what is actually happening inside the disc during treatment.

A herniated or bulging disc has lost intradiscal pressure. The disc material has extended beyond its normal boundary, compressing the nearby nerve root and triggering the pain, numbness, and referred leg symptoms that characterise disc-related back pain and sciatica.

The disc is also typically dehydrated, having lost the fluid content that gives it height, shock absorption, and the ability to exchange nutrients.

IDD Therapy works by applying a precisely angled, oscillating distraction force to the specific vertebral segment causing the problem.

This creates a negative intradiscal pressure effectively a gentle vacuum effect which encourages disc material to retract away from the nerve and draws fluid, oxygen, and nutrients back into the disc to support cellular repair and regeneration.

This process cannot be completed in one or two sessions. With each treatment, disc height gradually increases, the herniated material progressively retracts, and the surrounding soft tissue begins to loosen and normalise.

The cumulative effect builds over the course of treatment. Clinical research from Physiopedia confirms that IDD therapy consists of a series of computer-directed sessions specifically designed for each patient, with the course structured to allow progressive disc recovery rather than a single intervention.

Attempting a shortened course for example, only eight sessions has been shown to produce results comparable only to standard physiotherapy, because the disc has not been given sufficient time to complete the decompression and rehydration process. The full protocol exists because the biology of disc healing requires it.

What Happens After Session 10: The Mid-Course Review

The treatment protocol is not simply a countdown of sessions to tick off. It is a monitored, progressive plan with structured review built in.

After the first ten sessions, your clinician reviews your progress across several clinical measures: pain levels, range of movement, neurological symptoms such as numbness or pins and needles in the leg, and overall functional ability.

This review determines whether the treatment parameters need adjusting, whether progression to a higher decompressive force is appropriate, or whether any aspect of the programme needs to be modified.

This mid-course review is a standard part of the IDD Therapy protocol. It ensures that treatment is not simply delivered by rote but is actively adapted to the individual patient's response at each stage. Some patients show rapid early progress, while others respond more gradually and the treatment plan is adjusted accordingly.

At Charm Chiropractic, IDD Therapy is always delivered alongside chiropractic care and rehabilitation, meaning the mid-course review also takes into account the patient's overall musculoskeletal presentation, not just the disc in isolation.

When Do Patients Start to Feel Better?

This is one of the most common questions during an IDD Therapy consultation, and the honest answer is that it varies between patients and between conditions.

Some patients notice a reduction in pain and leg symptoms within the first few sessions. For others, the early sessions involve an adjustment period where existing symptoms may temporarily fluctuate before they begin to settle.

This pattern is well documented and reflects the fact that spinal structures that have been compressed for months or years need time to adapt to the decompressive forces being applied.

By sessions eight to twelve, the majority of patients who will respond to IDD Therapy begin to experience meaningful improvement. Pain levels tend to reduce, the duration between sessions without pain begins to lengthen, and functional mobility often improves noticeably.

This is the stage at which disc rehydration and retraction are typically well underway.

The strongest improvements are usually seen as the course progresses into its latter stages.

Patients who complete the full recommended course consistently report better outcomes than those who stop partway through, which is why completing the protocol is emphasised at Charm Chiropractic from the outset.

Factors That Affect How Many Sessions You Will Need

While the standard protocol provides a clear framework, the exact number of sessions that are right for you depends on several factors specific to your condition.

Severity and Type of Disc Herniation

A contained disc bulge with mild nerve irritation typically responds faster than a large disc herniation with significant nerve root compression or radiculopathy causing leg weakness. The more advanced the disc pathology, the more sessions are generally needed to achieve meaningful retraction and symptom resolution.

Duration of Symptoms

How long you have been in pain matters. A disc herniation that has been present and symptomatic for two months behaves differently from one that has been causing problems for two years. Chronic conditions involve adaptive changes in the surrounding soft tissue, muscle patterns, and spinal biomechanics that take longer to unwind. Patients with longer symptom duration typically need the extended protocol rather than the standard 20-session course.

Level of Disc Involvement

Some patients present with pathology at a single disc level. Others have two or more disc levels affected simultaneously. Multi-level disc involvement generally requires more sessions to adequately address each affected segment, and the treatment parameters may differ between levels.

Response to Treatment

Progress is monitored throughout the course, and the number of sessions may be extended where a patient is showing positive but slower-than-typical response. It is clinically more effective to extend a course by five sessions for a patient who is improving than to stop at session 20 and allow the disc to regress before completing the healing process.

Previous Treatments and Overall Health

Patients who have had previous spinal surgery at the treatment level are generally not candidates for IDD Therapy, as the altered spinal anatomy makes the treatment less predictable.

Patients with significant osteoporosis, active inflammatory conditions, or certain neurological presentations also require careful assessment before a protocol is determined. These factors are all screened at the initial consultation at Charm Chiropractic.

The Role of Maintenance Sessions

Completing the core treatment course is not necessarily the end of the programme. For many patients, particularly those with degenerative disc disease alongside their herniation, a maintenance phase of five additional sessions spread over several months following the main course can help consolidate results and prevent regression.

Research published in Cureus in 2024 found that the combination of 20 core sessions followed by five maintenance sessions over five months produced the best overall patient outcomes among the protocols reviewed.

The maintenance sessions serve to reinforce disc height, maintain the decompression gains achieved during the core course, and provide a structured touchpoint at which any early signs of recurrence can be identified and addressed before they become significant.

This is not a sign that IDD Therapy has failed it is simply good clinical practice for managing a spinal condition that, without appropriate follow-up, carries a risk of recurrence.

Your clinician at Charm Chiropractic will advise whether a maintenance phase is appropriate based on your specific condition and response to the core course.

What a Typical IDD Therapy Session at Charm Chiropractic Looks Like

For patients who have never experienced IDD Therapy before, understanding what actually happens during a session can help manage expectations and reduce anxiety about the process.

Before the session: The affected spinal segment is prepared with targeted soft tissue work, manual therapy, or heat application to increase local circulation and allow the disc to respond more effectively to decompression.

During the session: The patient lies comfortably on the Accu-SPINA device. Harnesses are applied to anchor the pelvis and upper body, allowing the computerised system to apply a gentle, oscillating distraction force at the precise angle required to target the affected disc level.

Patients typically describe the sensation as a mild stretching or movement of the bed beneath them. Most find the session comfortable, with many reporting a feeling of relaxation during treatment. Each session lasts 25 to 30 minutes.

After the session: Cold therapy is typically applied for ten minutes to reduce any post-treatment soreness. Patients are advised to avoid heavy lifting or prolonged sitting on the same day, and hydration is encouraged to support disc rehydration.

There is no recovery time. Patients can return to normal daily activities, including work, on the same day as treatment, which means the six to ten week course does not require extended time off or disruption to everyday life.

IDD Therapy for Disc Herniation in Broadstairs and Thanet

Charm Chiropractic is one of the few clinics in the Broadstairs and Thanet area offering IDD Therapy delivered using the Accu-SPINA system alongside full chiropractic care, shockwave therapy, and acupuncture. Patients from Margate, Ramsgate, Canterbury, and across Kent attend the clinic at the Kent Innovation Centre, Thanet Reach Business Park, Westwood, Broadstairs CT10 2QQ.

If you have been diagnosed with a herniated disc, bulging disc, or disc-related sciatica and have not found lasting relief from other treatments, IDD Therapy offers a structured, non-surgical pathway to recovery that addresses the mechanical cause of your pain rather than managing symptoms alone. Our blog also covers related topics including how IDD Therapy relieves pressure on spinal discs and the clinical differences between IDD Therapy and shockwave therapy for back pain both of which may be useful reading before your consultation.

To find out whether IDD Therapy is appropriate for your specific condition and to discuss the number of sessions likely to be needed, book an assessment at Charm Chiropractic. The clinical picture determines the protocol not a standard price list.

Frequently Asked Questions About IDD Therapy Sessions for Disc Herniation

How many IDD therapy sessions do I need for a herniated disc?

Most patients with a herniated disc complete between 20 and 30 sessions of IDD Therapy. The standard protocol involves 20 sessions delivered three to five times per week over six to eight weeks.

More complex or long-standing herniations may require the extended 25 to 30 session protocol. The exact number is determined at your initial clinical assessment based on the severity of your condition, the disc level or levels affected, and your symptom history.

Will I notice any improvement after the first few sessions?

Some patients experience early relief within the first three to five sessions. For others, the first several sessions involve an adjustment period before symptoms begin to settle and improve.

Meaningful progress is most commonly reported between sessions eight and twelve, with the strongest improvements occurring as the full course progresses. Early variation in symptoms is normal and does not indicate the treatment is not working.

What happens if I only do half the sessions?

Research comparing partial IDD Therapy courses to full protocols consistently shows that abbreviated treatment produces inferior results. A study noted in a 2024 PMC review found that even 32% of the recommended protocol produced results only equal to standard physiotherapy, rather than the meaningful disc-level improvement seen in patients who completed the full course.

Stopping early risks leaving the disc in a partially decompressed state before healing has consolidated, increasing the chance of symptom recurrence.

Can I go back to work during the IDD Therapy course?

Yes. There is no recovery time between sessions, and patients typically return to normal daily activities on the same day. The only restrictions are avoiding heavy manual lifting and prolonged static postures on treatment days.

The three to five sessions per week schedule is designed to fit around a working week, with Charm Chiropractic offering morning and afternoon appointment slots across Monday to Friday.

Is IDD therapy suitable if I have had back pain for years?

Yes, though long-standing disc conditions generally require the extended protocol rather than the standard 20-session course. Chronic disc herniations involve secondary changes in surrounding soft tissue and spinal biomechanics that take longer to address.

A thorough clinical assessment at Charm Chiropractic will determine whether IDD Therapy is appropriate for your specific history and what protocol is likely to be most effective.

Do I need an MRI before starting IDD therapy?

An MRI is not always mandatory before beginning IDD Therapy, but it is strongly recommended for patients with suspected disc herniation. MRI imaging confirms the diagnosis, identifies the specific disc level or levels affected, and rules out contraindications such as spinal instability, tumour, or fracture. If you do not have recent imaging,

Charm Chiropractic can advise you on how to access this before or alongside starting treatment.

What happens after I finish the IDD therapy course?

Following the core treatment course, your clinician will assess your progress and discuss whether a maintenance phase of additional sessions over the following months is appropriate. You will also be given specific rehabilitation exercises and lifestyle guidance to support the results of treatment and reduce the risk of recurrence.

For patients with degenerative disc disease alongside their herniation, periodic maintenance sessions are often recommended as part of a long-term spinal health strategy.