Thoracolumbar sprains

1. High-Yield Summary

• Definition & Core Distinction: Thoracolumbar sprains involve mechanical injury, micro-tearing, or partial disruption of the osteoligamentous stabilizers (supraspinous, interspinous, and facet capsular ligaments) and the thoracolumbar fascia, frequently co-occurring with myofascial strain of the erector spinae and multifidus musculature.
• Biomechanical Vulnerability: The thoracolumbar junction (T10–L2) represents a high-stress transition zone between the rigid, rib-stabilized, coronal-facet thoracic spine and the flexible, lordotic, sagittal-facet lumbar spine, rendering it singularly vulnerable to acute rotational and flexion-distraction loading.
• Strict Non-Operative Natural History: Isolated sprains follow a self-limiting, benign trajectory, with greater than 85% to 90% of patients achieving complete functional recovery within 4 to 6 weeks under early active mobilization and non-opioid multimodal analgesia.
• Absolute Contraindication to Prolonged Bed Rest: Strict recumbency exceeding 48 hours is deleterious, accelerating paraspinal atrophy, bone mineral density deconditioning, and chronic pain disability.
• Critical Diagnostic Mandate: Clinicians must vigorously exclude red flags (fracture, epidural abscess, malignancy, cauda equina syndrome) and occult posterior ligamentous complex (PLC) failure through clustered clinical decision rules before assigning an uncomplicated soft-tissue diagnosis.

2. Anatomy

The thoracolumbar spine (T10–L2) and contiguous lumbar segments rely on an intricate osteoligamentous and muscular network to provide structural resistance against axial compression, rotational shear, and flexion-distraction vectors. A comprehensive understanding of this functional anatomy is crucial for localizing primary tissue pathology and differentiating benign ligamentous strain from segmental instability.

Osteoligamentous Architecture & The Posterior Ligamentous Complex

Stability across the thoracolumbar junction is governed by three anatomic columns (Denis classification) and the specialized posterior ligamentous complex (PLC):

• Supraspinous Ligament (SSL): A robust, cord-like fibrocollagenous band connecting the apices of the spinous processes from C7 to the sacrum. It provides the initial tensile restraint against forward hyperflexion.
• Interspinous Ligament (ISL): Thin, oblique membranous sheets connecting adjacent spinous processes. ISL fibers run ventrocranially to dorsocaudally, serving as secondary restraints against hyperflexion. Interspinous widening on radiography or edema on fluid-sensitive MRI indicates mechanical compromise.
• Ligamentum Flavum: Highly elastic collagenous arches bridging adjacent laminae from C2 to S1. Its high elastin content maintains tension across flexion-extension arcs and preserves the posterior boundary of the spinal canal.
• Facet Joint (Zygapophysial) Capsules: Fibrous envelopments of the superior and inferior articular facets that restrict excessive axial rotation, extension, and translational subluxation.

Myofascial Restraints & The Thoracolumbar Fascia

Dynamic spinal stabilization and muscular resistance are driven by the posterior paraspinal musculature and the multilayered thoracolumbar fascia (TLF):

• Erector Spinae Mass: Composed of the iliocostalis, longissimus, and spinalis muscles. These longitudinal columns act as the primary dynamic extensors and lateral benders of the vertebral column.
• Deep Multifidus & Rotatores: Short, oblique paraspinal stabilizers spanning 2 to 4 vertebral levels. The multifidus provides dynamic segmental stiffness and proprioceptive feedback, critical in preventing micro-instability.
• Thoracolumbar Fascia (TLF): A trilaminar retinacular structure encompassing the anterior, middle, and posterior layers. The posterior layer envelops the erector spinae and anchors to the latissimus dorsi and gluteus maximus, creating a continuous posterior kinetic tension band that transmits load between the upper torso and pelvis.

Neurologic Innervation & Danger Zones

The thoracolumbar junction possesses a unique neurovascular anatomy that frequently confounds diagnostic evaluation:

• Dorsal Ramus Innervation: Each thoracic and lumbar spinal nerve divides into ventral and dorsal rami upon exiting the intervertebral foramen. The dorsal ramus bifurcates into a medial branch (supplying the facet joints and multifidus) and a lateral branch (supplying the iliocostalis and cutaneous structures).
• Thoracolumbar Junction Dorsal Rami (T11–L1) & Superior Cluneal Nerves: The lateral branches of the posterior rami of T11, T12, and L1 course obliquely inferolaterally through the erector spinae, cross over the posterior iliac crest through osteofibrous tunnels (7–8 cm lateral to the midline), and provide cutaneous sensation to the superior buttock and groin. Mechanical traction or irritation here produces referred pain to the iliac crest and groin (Maigne syndrome), masquerading as lumbosacral disc disease or hip pathology.
• Conus Medullaris & Cauda Equina Danger Zone: The spinal cord terminates as the conus medullaris at the L1–L2 level in the mature adult. High-energy injuries or massive hematomas at this junction risk catastrophic conus medullaris syndrome, presenting with mixed upper and lower motor neuron signs, symmetric perianal sensory loss, and early sphincter paralysis.

3. Pathogenesis

Thoracolumbar sprains result from acute tensile overload, eccentric deceleration, or rotational shear that exceeds the physiologic elastic limit of the spinal ligaments and myofascial units. The mechanical vulnerability of this segment is governed by clear kinematic and structural factors:

Biomechanical Transition Zone

The thoracolumbar junction (T10–L2) marks the confluence of two radically distinct kinematic regimes. The thoracic spine is intrinsically rigid due to the coronal orientation of its facet joints (which resist flexion and anterior translation while permitting limited axial rotation) and the external mechanical cage provided by the rib cage and sternum. Conversely, the lumbar spine is highly mobile, lordotic, and features sagittal facet joints designed to permit substantial flexion-extension arcs while severely constraining axial rotation.

At the transitional junction—most prominently at T12–L1—the facet morphology shifts abruptly from coronal to sagittal. During sudden trunk flexion combined with twisting or awkward lifting, rotational vectors are transferred directly through the transitional junction without the stabilizing splint of the ribs, concentrating intense tensile and shear forces into the posterior ligamentous structures and paraspinal origins.

Cellular and Tissue Failure Cascades

Acute tissue injury progresses through well-defined physiological stages:

• Micro-Disruption & Fibrillar Failure: Tensile loading beyond yield strength leads to collagen cross-link disruption within the supraspinous and interspinous ligaments, accompanied by microvascular bleeding and interstitial edema.
• Pro-Inflammatory Mediator Cascade: Mast cell degranulation and macrophage infiltration trigger the rapid release of substance P, calcitonin gene-related peptide (CGRP), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α). These mediators sensitize high-threshold A-delta and C mechano-nociceptors within the ligamentous insertions and facet capsules.
• Reflex Paraspinal Muscle Spasm: Nociceptive afferent volleys stimulate the alpha-motor neuron pool in the ventral horn, inducing an involuntary, sustained contraction of the surrounding erector spinae and multifidus muscles. While initially functioning as an adaptive biologic splint to prevent excessive motion, prolonged sustained spasm causes intramuscular ischemia, lactic acidosis, and severe secondary mechanical pain.

4. Natural History

Understanding the epidemiology and natural progression of thoracolumbar sprains is fundamental for reassuring patients, preventing overtreatment, and recognizing early indicators of chronification.

Epidemiology & Demographics

Acute soft-tissue spinal sprains and muscular strains represent the single most common cause of back-related physician visits globally, accounting for up to 70% to 80% of all acute non-specific spine evaluations. The peak incidence occurs between 20 and 50 years of age, coinciding with peak employment and athletic involvement. Risk factors include heavy manual lifting, repetitive twisting, sudden unconditioned exertion, whole-body vibration, poor baseline physical conditioning, and smoking.

Prognosis & Functional Recovery Timeline

The natural course of uncomplicated thoracolumbar sprains is overwhelmingly favorable:

• Acute Phase (0–2 Weeks): Maximal pain and muscle spasm typically peak within the first 48 to 72 hours. With proper early mobilization, 50% to 60% of functional limitation resolves within the first 14 days.
• Subacute Resolution (2–6 Weeks): Greater than 85% to 90% of patients achieve complete symptom resolution, normal range of motion, and successful return to light-to-moderate occupational duties within 4 to 6 weeks.
• Chronic Transition (Greater Than 12 Weeks): Approximately 5% to 10% of patients fail to recover within typical biological healing windows, transitioning into subacute or chronic low back pain syndromes.

Psychosocial Modifiers (“Yellow Flags”)

Progression from acute soft-tissue injury to chronic disabling pain is rarely mediated by structural pathology alone; rather, it is heavily influenced by psychosocial indicators:

• Fear-Avoidance Beliefs: Catastrophizing pain sensations and avoiding ordinary physical activity based on the misconception that pain equates to structural damage.
• Psychological Distress: Pre-existing anxiety, clinical depression, or high personal stress.
• Occupational Factors: Job dissatisfaction, adversarial worker’s compensation claims, pending personal injury litigation, or lack of modified work options.

5. Clinical Presentation

The clinical presentation of an acute thoracolumbar sprain requires systematic history taking and rigorous physical examination to differentiate benign soft-tissue strain from occult neurovascular compromise or fracture.

History & Symptom Stratification

Patients typically describe an acute, identifiable inciting event—such as lifting a heavy load from a flexed and rotated position, a sudden slip-and-catch mechanism, or sports-related deceleration. Key subjective characteristics include:

• Pain Localization: Axial, localized pain across the lower thoracic or upper lumbar paraspinal musculature and midline spinous processes. Pain may radiate laterally across the flank or inferiorly toward the iliac crests and buttocks, but it does NOT follow a discrete dermatomal pattern below the knee.
• Aggravating and Alleviating Factors: Pain is intensely exacerbated by trunk forward flexion, rotational maneuvers, coughing, or transitioning from sitting to standing. It is partially relieved by resting supine with hips and knees flexed (unloading the psoas and paraspinal tension).
• Absence of True Neurologic Symptoms: True radicular shooting paresthesias, subjective lower extremity muscle weakness, or loss of bowel and bladder control are absent in uncomplicated sprains.

Red Flag Screening: A targeted medical review must assess for high-risk clinical indicators that mandate immediate structural imaging:

• Trauma consistent with patient age (e.g., fall from standing height in an osteoporotic individual, motor vehicle collision or fall from height in a young adult).
• Age older than 50 years or younger than 18 years.
• History of malignancy, unexplained weight loss, night sweats, or unremitting non-mechanical nocturnal pain.
• Systemic fever, chills, concurrent bacterial infection, intravenous drug use, or recent epidural catheterization.
• Chronic systemic corticosteroid therapy or known severe osteoporosis.
• Saddle or perianal anesthesia, new urinary retention, overflow incontinence, or fecal incontinence (Cauda Equina Syndrome).

Physical Examination & Provocative Maneuvers

A rigorous examination assesses gait, alignment, palpation, active mobility, and provocative neural testing:

• Inspection & Posture: Antalgic, guarded gait. The patient frequently stands with a flattened lumbar lordosis or a protective list (sciatic scoliosis), driven by unilateral paraspinal muscle contracture.
• Palpation: Acute focal tenderness along the paraspinal muscular columns (erector spinae) and over the interspinous ligaments. The clinician must run a thumb firmly down the midline spinous processes; any palpable step-off, distinct interspinous diastasis (gap), or severe focal bony prominence raises immediate concern for fracture-dislocation or rupture of the posterior ligamentous complex.
• Active Range of Motion (ROM): Forward flexion is universally guarded and limited by paraspinal spasm. Extension and lateral bending to the contralateral side stretch the injured fibers and reproduce local pain.
• Straight Leg Raise (SLR) Test: Passive elevation of the straight lower extremity with the patient supine (30° to 70°). In isolated sprains, this test is NEGATIVE for radicular pain radiating below the knee (though hamstring tightness and posterior thigh stretching are common). Positive SLR demonstrates a sensitivity of 91% and specificity of 26% for true disc herniation with radiculopathy.
• Crossed Straight Leg Raise (Well-Leg SLR) Test: Elevation of the asymptomatic contralateral lower extremity. Highly specific (88% specificity, 29% sensitivity) for nerve root compression; strictly negative in isolated sprains.
• Prone Instability Test: The patient lies prone with the trunk on the examining table and feet resting on the floor. Posterior-to-anterior (PA) springing pressure is applied to individual spinous processes, eliciting pain. The patient then lifts both feet off the floor (contracting the paraspinals), and pressure is reapplied. Significant reduction of pain during muscular contraction suggests dynamic mechanical instability rather than simple myofascial sprain.
• Thoracolumbar Junction Skin Roll / Pinch Test (Maigne Test): Firmly pinching and rolling the skin fold overlying the posterior iliac crest and paraspinal gutter at T11–L1. Elicitation of sharp cutaneous hyperesthesia reproduces referred symptoms from dorsal ramus entrapment (Maigne syndrome).
• Comprehensive Neurologic Examination: Systematic assessment of lower extremity motor power (L2 hip flexion, L3 knee extension, L4 ankle dorsiflexion, L5 great toe extension, S1 plantarflexion), sensory dermatomes (L1–S4), and deep tendon reflexes (patellar L4, Achilles S1). In an uncomplicated thoracolumbar sprain, the motor, sensory, and reflex examinations are completely normal.

6. Imaging and Diagnostic Studies

Routine radiographic imaging is NOT indicated for acute thoracolumbar sprains during the initial 4 to 6 weeks of clinical presentation in the absence of red flags. Unnecessary early imaging leads to heightened patient anxiety, incidental labeling of benign degenerative findings, and unnecessary interventions without improving functional clinical outcomes.

Plain Radiography

When red flags are identified (significant trauma, age older than 50 years, prolonged steroid therapy, or suspected structural instability), plain radiographs represent the primary screening modality:

• Standard Views: Dedicated anteroposterior (AP) and lateral projections centered on the thoracolumbar junction (T10–L2).
• Radiographic Metrics:
  • Vertebral body height: Height loss exceeding 20% to 25% of anterior vertebral body height indicates a compression fracture.
  • Interspinous distance: On AP radiographs, widening of the interspinous gap greater than 20% compared to adjacent superior and inferior levels indicates severe rupture of the posterior ligamentous complex.
  • Interpedicular distance: Widening of the interpedicular distance on AP view reflects sagittal burst splitting of the posterior vertebral body wall.
  • Sagittal Cobb angle: Focal kyphotic angulation greater than 15° to 20° across the damaged segment suggests structural instability.

Advanced Cross-Sectional Imaging

Advanced cross-sectional studies are strictly reserved for distinct diagnostic indications:

• Computed Tomography (CT): The gold standard for characterizing bony architecture, occult facet fractures, lamina fractures, or pars interarticularis defects. Required immediately if high-energy trauma or inconclusive plain radiographs accompany severe focal midline tenderness.
• Magnetic Resonance Imaging (MRI): The definitive modality of choice for visualizing soft-tissue, neural, and ligamentous structures. Indicated when there are progressive neurologic deficits, suspicion of spinal infection (discitis/osteomyelitis), epidural hematoma/abscess, or clinical suspicion of cauda equina syndrome. On fluid-sensitive sequences (T2 STIR), high signal intensity within the interspinous and supraspinous ligaments definitively confirms rupture or grade III disruption of the posterior ligamentous complex.

7. Classification

Soft-tissue thoracolumbar sprains and ligamentous injuries are categorized clinically by the anatomical extent of tissue failure, and structurally according to established spine trauma criteria to distinguish isolated soft-tissue disruption from surgical instability.

Clinical Severity Grading of Thoracolumbar Ligamentous Sprains

Differential Diagnosis Matrix

8. Treatment

The management of uncomplicated thoracolumbar sprains is overwhelmingly conservative, non-invasive, and rooted in early functional reactivation. Routine surgical management has no indication in isolated soft-tissue sprains.

Medical & Nonoperative Management

Clinical practice guidelines from the American College of Physicians (ACP) establish a clear tiered protocol prioritizing nonpharmacologic interventions followed by targeted, non-opioid medications:

• First-Line Nonpharmacologic Therapies:
  • Early Active Mobilization: Patients must be explicitly instructed to maintain light daily activities and walking as tolerated. Bed rest exceeding 48 hours is strictly contraindicated as it produces muscle deconditioning, joint stiffness, and delayed recovery.
  • Superficial Heat Therapy: Application of continuous low-level topical heat wraps provides moderate Level I evidence for significant acute pain reduction and functional disability improvement.
  • Manual Therapy & Spinal Manipulation: Light soft-tissue mobilization and spinal manipulation performed by trained therapists demonstrate small-to-moderate short-term improvements in pain and mobility.
• First-Line Pharmacologic Modalities:
  • Oral Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): Ibuprofen (400–800 mg TID with meals), Naproxen (250–500 mg BID), or Meloxicam (7.5–15 mg daily) represent the primary medical therapy, reducing inflammatory mediator output and secondary pain. Use the lowest effective dose for a brief 7- to 14-day duration, screening for renal, cardiovascular, and gastrointestinal risks (co-prescribing a proton pump inhibitor in patients older than 65 years).
  • Skeletal Muscle Relaxants (Non-Benzodiazepine): Cyclobenzaprine (5–10 mg TID as needed) or Tizanidine (2–4 mg TID) may be added as an adjunctive short-term agent (3 to 7 days) if severe paraspinal muscle contracture impairs sleep or initial mobilization. Patients must be cautioned regarding significant central sedation.
• Therapies Lacking Clinical Efficacy (Not Recommended):
  • Acetaminophen: Multiple large-scale randomized trials demonstrate that acetaminophen is no more effective than placebo for acute low back pain and soft-tissue sprain recovery.
  • Systemic Corticosteroids: Oral or intramuscular steroids (e.g., prednisone dose packs) lack demonstrated efficacy in soft-tissue sprains and carry substantial adverse effects.
  • Opioid Analgesics: Strictly discouraged for acute soft-tissue sprains due to high potential for physical dependence, hyperalgesia, constipation, and lack of functional superiority over NSAIDs.
• Active Physical Therapy & Core Re-education: Initiated 2 to 3 weeks post-injury as acute spasms subside. Emphasizes active extension-oriented exercises, dynamic core stability (transversus abdominis and lumbar multifidus recruitment), hip mobility, and ergonomic lifting instruction.

Operative Indications & Surgical Considerations

An isolated thoracolumbar sprain carries zero indication for surgical intervention. Surgery is strictly contemplated when diagnostic evaluation reveals an occult, unstable osteoligamentous injury that was initially misclassified as a simple sprain:

• Complete Posterior Ligamentous Complex Rupture (Grade III): In the presence of translational subluxation, focal kyphotic deformity greater than 20°, or concurrent unstable fracture patterns (TLICS score of 5 or greater).
• Acute Progressive Neurologic Deficit: New-onset motor paresis or cauda equina syndrome requiring immediate decompressive laminectomy and instrumented stabilization.

Indications & Contraindications Summary

9. Outcome

Clinical outcomes in uncomplicated thoracolumbar sprains are objectively measured using validated patient-reported outcome measures (PROMs), including the Oswestry Disability Index (ODI), the Roland-Morris Disability Questionnaire (RMDQ), and the Visual Analog Scale (VAS) for pain.

• Short-Term Recovery (0–4 Weeks): Over 70% to 80% of patients experience a minimum clinically important difference (MCID) of at least 30% to 50% improvement in pain (VAS score reduction ≥ 2 points) and functional disability within 2 to 4 weeks of protocolized conservative care.
• Return to Work & Athletic Activity:
  • Sedentary / Desk Occupations: Typically able to return within 2 to 5 days under ergonomic guidance.
  • Light-to-Moderate Physical Labor: Return to modified light duties within 1 to 2 weeks, advancing to unrestricted duty by 4 to 6 weeks.
  • Heavy Manual Labor / Collision Athletics: Full unrestricted clearance achieved once the patient demonstrates painless trunk range of motion, normal paraspinal endurance, and symmetric core strength (typically 6 to 8 weeks).
• Long-Term Prognosis & Recurrence Rates: While primary functional prognosis is excellent, recurrence rates for acute back strains range from 20% to 40% within 1 to 2 years, highlighting the essential necessity of structured trunk muscle strengthening, posture re-education, and ergonomic modification following acute symptom resolution.

10. Complications

Complications associated with thoracolumbar sprains fall into immediate mechanical consequences, medical adverse effects of pharmacological therapies, and chronic disabling sequelae:

11. Pearls and Pitfalls

• Master Pearl — The 60-Second Reassurance: The most potent therapeutic intervention in the acute setting is emphatic patient education regarding the benign, self-limiting biology of soft-tissue sprains. Reassuring patients that pain does not signify permanent structural damage reduces fear-avoidance behaviors and halves the risk of chronic disability.
• Master Pearl — Beware the Thoracolumbar Junction: Always palpate the T11–L1 region in patients presenting with isolated buttock, iliac crest, or groin pain. Entrapment of the cluneal nerve branches at the thoracolumbar junction (Maigne syndrome) is one of the most frequently missed causes of “pseudo-lumbosacral” pain.
• Critical Pitfall — Premature Advanced Imaging: Ordering an MRI during the initial 4 weeks in the absence of red flags invariably exposes asymptomatic degenerative disc bulges, annular tears, or facet arthritis, inducing catastrophic patient anxiety and predisposing to unnecessary invasive interventions.
• Critical Pitfall — The Prescription of Bed Rest: Advising patients to “rest in bed until the back stops hurting” is obsolete and clinically harmful. Strict bed rest beyond 48 hours leads to 1% to 1.5% loss of muscle strength per day, spinal deconditioning, and delayed functional recovery.
• Critical Pitfall — The Overlooked Midline Gap: Failing to perform a rigorous palpation of the midline spinous processes in trauma patients can lead to missing a high-grade tear of the posterior ligamentous complex, resulting in progressive post-traumatic kyphosis.

12. Controversy

Modern clinical discourse highlights key areas where evidence remains contested or clinical practice diverges:

Utility and Risk Profile of Skeletal Muscle Relaxants

While clinical practice guidelines support the short-term use of non-benzodiazepine skeletal muscle relaxants (e.g., cyclobenzaprine) for acute painful spasm, their clinical effect size is modest, and adverse central nervous system sedation occurs in up to 30% of patients. Ongoing debate centers on whether the modest symptomatic benefit outweighs the sedation risk, particularly in elderly populations vulnerable to falls and cognitive impairment.

Role of Lumbar Orthoses and Bracing in Acute Sprains

The use of flexible elastic lumbar binders or corsets remains controversial. Proponents argue that light corsets provide cutaneous warmth, kinesthetic proprioceptive biofeedback, and abdominal wall compression that unloads the posterior columns during acute ambulation. Opponents argue that routine bracing fosters psychological reliance, weakens dynamic paraspinal stabilizers, and delays natural active rehabilitation. Current consensus limits soft corsets to short-term intermittent use during unavoidable heavy occupational tasks in the initial 1 to 2 weeks only.

Optimal Diagnostic Timing for Refractory Symptoms

While consensus dictates withholding advanced imaging during the initial 4 to 6 weeks, opinions diverge on the exact investigation timeline for patients with persistent, non-improving axial pain without red flags at the 6- to 8-week mark. Clinicians must weigh the cost and incidental discovery rate of routine MRI against the risk of delaying the diagnosis of occult spondylolysis, early inflammatory spondyloarthropathy, or atypical facet arthropathy.

13. Evidence-Based Synthesis

Modern clinical decision-making is grounded in high-quality randomized controlled trials and prospective registry analyses, corroborated by seminal biomechanical and anatomical descriptions.

14. References

• Qaseem A, Wilt TJ, McLean RM et al. Noninvasive Treatments for Acute, Subacute, and Chronic Low Back Pain: A Clinical Practice Guideline From the American College of Physicians. Ann Intern Med. 2017. doi:10.7326/M16-2367 [Level I: Clinical Practice Guideline]
• Chou R, Deyo R, Friedly J et al. Systemic Pharmacologic Therapies for Low Back Pain: A Systematic Review for an American College of Physicians Clinical Practice Guideline. Ann Intern Med. 2017. doi:10.7326/M16-2458 [Level I: Systematic Review / Meta-Analysis]
• Chou R, Deyo R, Friedly J et al. Nonpharmacologic Therapies for Low Back Pain: A Systematic Review for an American College of Physicians Clinical Practice Guideline. Ann Intern Med. 2017. doi:10.7326/M16-2459 [Level I: Systematic Review / Meta-Analysis]
• Maselli F, Palladino M, Barbari V et al. The diagnostic value of Red Flags in thoracolumbar pain: a systematic review. Disabil Rehabil. 2022. doi:10.1080/09638288.2020.1804626 [Level I: Systematic Review & Diagnostic Meta-Analysis]
• Randhawa S, Garvin G, Roth M et al. Maigne Syndrome – A potentially treatable yet underdiagnosed cause of low back pain: A review. J Back Musculoskelet Rehabil. 2022. doi:10.3233/BMR-200297 [Level IV: Clinical Case Series / Cohort Study]

15. Master Class Pro-Tip

When evaluating severe lower back or upper gluteal pain following an acute lifting or twisting injury, never confine your physical examination to the lumbosacral junction. Systematically palpate the spinous processes and paraspinal gutters across the thoracolumbar transition zone (T10–L2). If unilateral digital pressure over the T11–L1 facet elicits sharp tenderness that reproduces referred discomfort across the posterior iliac crest, pinch and roll the skin overlying the crest (Maigne test). Recognizing thoracolumbar junction posterior ramus irritation prevents the clinician from ordering unwarranted lumbosacral MRIs or pursuing unproductive lumbar facet injections, directing therapy instead to localized thoracolumbar manual mobilization and targeted facet stabilization.

Master Class Surgical Pearl: Thoracolumbar Transition Assessment & The Maigne Phenomenon