Sacro-Occipital Technique (SOT)

What it is

Sacro-Occipital Technique was developed in the 1920s by Major Bertrand DeJarnette, a chiropractor and osteopath who observed that the sacrum and the occiput move in a coordinated, rhythmic pattern tied to the circulation of cerebrospinal fluid (CSF), the fluid that bathes and protects the brain and spinal cord. SOT holds that mechanical distortion of the sacropelvic complex disrupts this rhythm and, over time, produces compensatory changes that travel up the spine to the cranium. The goal of SOT care is to identify which category of sacropelvic distortion is present and to apply the specific procedures that restore the normal relationship between the pelvic foundation and the cranial base.

The technique organizes patients into three clinical categories based on the pattern of ligamentous and neurological involvement. Category I represents early-stage sacroiliac ligament weakness in which the pelvis is not yet causing arm or leg symptoms. Category II involves more advanced sacroiliac distortion with a positive weight-bearing test and possible sciatic referral. Category III describes a sacropelvic pattern that is directly compressing or distorting lumbar disc tissue, producing nerve root signs. Each category carries its own blocking protocol, in which the clinician places firm wedge-shaped pads under the pelvis at precise anatomical locations and allows gravity and respiratory motion to gently reposition the sacrum, reducing stress on the surrounding ligaments and neural tissues.

What to expect

A first SOT visit at begins with a thorough history and orthopedic examination designed to classify the patient's current sacropelvic pattern. examines leg-length inequality, sacroiliac (SI) joint stress tests, the patient's ability to bear weight, and indicators of lumbar disc involvement. This assessment determines the blocking configuration that will be used. The patient then lies in a specific position, usually prone (face down), while padded blocks are placed under the pelvis. The patient rests in this position for several minutes while breathing normally, allowing the sacrum to remodel its position through the gentlest possible mechanical input. No thrust is applied during the blocking phase.

Once the pelvic category has been addressed may perform a chiropractic adjustment (spinal manipulation) at the lumbar, thoracic, or cervical spine to address any secondary fixations that have developed as a result of the pelvic distortion. Cranial procedures, which involve light, sustained contacts along the bones of the skull, are sometimes added when the patient's presentation calls for them. Most SOT sessions last between 20 and 40 minutes. Soreness in the sacroiliac region is possible after early visits, particularly in Category II patients, and typically resolves within 24 to 48 hours. Patients are often instructed to avoid prolonged sitting immediately after care to allow the corrective position to stabilize.

Key benefits

• SOT blocking procedures reduce mechanical loading on the sacroiliac ligaments through gravity-assisted repositioning rather than thrust, making the approach accessible to patients for whom high-velocity adjustment is contraindicated. ^[4]
• By restoring pelvic symmetry, SOT addresses a foundational mechanical factor in Low Back Pain that is often overlooked when care focuses solely on lumbar segments.
• Category II and Category III protocols target the sacropelvic distortions most closely associated with Sciatica and lumbar disc involvement, directing treatment to the structural source rather than only managing pain signals. ^[4]
• Research examining chiropractic care for spinal conditions shows a trend toward incorporating outcome measures that capture neurological as well as musculoskeletal change, consistent with SOT's dual focus on structural alignment and cerebrospinal fluid dynamics. ^[7]
• The rhythmic, low-force nature of SOT procedures makes it a practical complement to for patients who require graduated mechanical unloading across multiple treatment visits.
• Because SOT addresses the craniosacral axis from foundation to apex, it provides a framework for understanding how pelvic distortion contributes to cervical and cranial symptoms, which supports integrated care planning. ^[5]

Who benefits most

SOT is most clinically relevant for patients presenting with sacroiliac joint dysfunction, chronic low back pain, or recurrent Hip Pain that has not responded fully to other spinal procedures. Patients who fit the Category II or III classification, meaning those who have a positive SI stress test or frank nerve root signs, are often the strongest candidates because the blocking protocol is designed specifically for those patterns. Patients with osteoporosis, recent spinal fracture, or certain inflammatory joint conditions may require modified blocking positions, and a thorough pre-care evaluation helps identify those individuals.

Older adults and patients who are deconditioned or post-surgical tend to appreciate SOT's position-based approach because it achieves mechanical change without a thrust. Pregnant patients in their second and third trimesters represent another population in which SOT's gentle pelvic procedures are commonly applied, as the technique can be adapted to side-lying positioning. Patients who have already undergone care may find that SOT and upper-cervical procedures address complementary ends of the same functional axis, and integrates both approaches when clinical findings support it.

How it connects to chiropractic

SOT sits within a broader body of chiropractic evidence that examines how spinal and pelvic mechanics influence neurological function. Studies using neurophysiological outcome measures have documented that chiropractic adjustment produces changes in cortical sensorimotor processing and sensorimotor integration, indicating that mechanical inputs to the spine have consequences that extend well beyond local tissue effects. ^[5] SOT's theoretical framework, which traces dysfunction from the sacrum through the cerebrospinal fluid pathway to the cranium, aligns with this evidence that the spine functions as a neurological relay, not merely a structural scaffold.

Clinical research on chiropractic care for lumbar spine conditions consistently identifies disc herniation and sacroiliac involvement as the two most common anatomical targets in practice surveys, and Category III SOT directly addresses both. ^[4] Surveys of chiropractors managing patients with lumbar disc herniation show that technique selection, patient characteristics, and the severity of neurological signs all influence the treatment approach, which is precisely the kind of case-by-case classification that SOT formalizes through its three-category system. Evidence also supports multimodal chiropractic care, including the use of positioning, soft-tissue work, and adjustment together, for patients with complex spinal presentations, a pattern that mirrors how SOT integrates blocking, cranial work, and conventional adjustment within a single session. ^[3]

The publication record for chiropractic research has grown considerably over the past two decades, with randomized controlled trials and systematic reviews now representing a larger share of the literature than in earlier periods. ^[7] This expanding evidence base increasingly validates the clinical reasoning behind technique-specific approaches like SOT, particularly for sacropelvic and lower-extremity complaints. X-ray utilization in chiropractic practice varies widely, and decisions about imaging in SOT care follow the same clinical reasoning applied to any spinal technique, using films when they are likely to change management rather than as a routine step. ^[6] Dosing and frequency of care are also evidence-informed considerations, with research suggesting that spinal manipulative therapy produces dose-dependent outcomes in certain patient populations, a principle that applies directly to how SOT category protocols are sequenced across a course of care. ^[8]

For patients at whose presentation involves both a sacropelvic component and a discogenic (disc-related) component, SOT Category III blocking can be paired with that address axial decompression, giving the clinician a graduated mechanical strategy. Patients whose sciatica-pattern symptoms arise from sacropelvic distortion rather than purely from disc compression often show a different trajectory of improvement, and the SOT category framework helps distinguish those patterns clinically. draws on 28 years of clinical experience and his Life University training to apply SOT findings within a complete examination that may also include Diversified Technique procedures when segmental fixations require direct adjustment. For a detailed look at what care planning looks like at this practice, visit .

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