Burst Fracture
Other Names
- Thoracolumbar Burst Fractures
- Thoracic Burst Fracture
- Lumbar Burst Fracture
- Vertebral burst fracture
- Spinal burst fracture
- Thoracolumbar burst fracture
- Thoracic burst fracture
- Lumbar burst fracture
- Compression burst fracture
- Axial load vertebral fracture
Background
- This page describes burst fractures of the thoracolumbar spine
History
- First described by Holdsworth in 1963[1]
- In 1983, Francis Denis introduced the three-column model[2]
- The increasing use of CT in the 1980s and 1990s allowed clinicians to better identify retropulsed fragments and canal compromise
- The development of modern classification systems, including the AO Spine Classification, refined the understanding of burst fractures[3]
Epidemiology
- 90% of spinal fractures occur within the thoracolumbar spine[4]
- As many as 60% are burst fractures[5]
- Specific data on burst fractures is limited
Introduction





General
- Burst fractures are spinal injuries characterized by failure of both the anterior and middle columns
- They occur in the spine following axial compression loads, often associated with flexion[9]
- They predominantly affect the thoracolumbar junction (T10-L2), where the relatively fixed thoracic spine transitions to the mobile lumbar spine.
Etiology
- Involves compression with axial load, typically with flexion
- High energy vertical impact loads cause vertebral failure
- Force through anterior and middle column with posterior force vector
- This causes retropulsion of bone into canal
- Majority occur at the thoracolumbar junction, a transition point from the kyphotic thorax to lordotic lumbar spine
- Stability of fracture is controversial
- Radiographic parameters are used to evaluate stability
- kyphotic angle, anterior vertebral height, posterior vertebral height, and canal compromise
- Presence/ absence of neurological symptoms
Three-Column Theory
- Denis: 3 column theory[10]
- Vertebral body can be divided into anterior, middle and posterior column
- Anterior column: anterior longitudinal ligament + anterior half of vertebral body/disc
- Middle column: posterior half of vertebral body/disc + posterior longitudinal ligament
- Posterior column: pedicles, lamina, facet joints, and posterior ligamentous structures
Anatomy of the Vertebral Body
- Primary weight bearing structure, transmits axial loads through the spine
- Composed of spongy bone that absorbs compressive forces and distributes load
- Thin outer layer of dense bone providing structural strength and resistance to deformation
- Intervertebral Discs allow load transmission and spinal mobility
Associated Neurological Injuries
- Spinal Cord Injury (SCI)/ Neurological Deficits
- Retropulsion of bony fragments into the canal can cause cord compression, especially in the thorax[2]
- Neurological deficit in 50-60% of thoracolumbar burst fractures[9]
- Can see complete, partial spinal cord injuries with complete loss of sensory, motor function in lower extremities
- Patients can also experience urinary, fecal incontinence, paraplegia
- Cauda Equina Syndrome
- Head Trauma
- Intracranial bleeding
Associated Spinal Structural Injuries
- Posterior ligamentous complex (PLC) injury
- Disruption of the supraspinous, interspinous, and ligamentum flavum structures contributes to instability[3]
- Laminar Fractures
- Ppresent in 95% of patients with cauda equina herniation
- Traumatic spinal Canal stenosis
- From retropulsed bone fragments
- Adjacent vertebral fractures
- High-energy mechanisms often result in multi-level spinal injuries.[13]
- Wedge compression fractures
- May occur at adjacent levels or represent part of a spectrum of axial load injuries.[14]
- Translational/rotational spinal injuries
- Severe trauma may produce combined injury patterns involving displacement and instability[13]
- Kyphotic deformity
- Loss of anterior column height can lead to progressive kyphosis, especially if untreated or unstable[11]
Other Associated Injuries
- Intra-abdominal injuries
- Common in high-energy mechanisms (e.g., MVC, falls), including solid organ injury.[2]
- Thoracic injuries
- Rib fractures, pulmonary contusions, and pneumothorax frequently coexist with thoracic burst fractures[13]
- Pelvic fractures
- High-energy axial load and deceleration injuries can involve both the spine and pelvis[3]
- Long bone fractures
- Extremity injuries (e.g., femur, tibia) are commonly seen in polytrauma patients with burst fractures[11]
Risk Factors
Demographic and Lifestyle[15]
- Male sex: four times higher risk than females
- Increasing age: incidence increases with age
- Early menopause (<45 years) in women
- Tobacco Use Disorder
- Alcohol Use Disorder
Traumatic/Mechanical[9]
- Motor vehicle accidents (most common cause)
- Falls from height
- Sports-related injuries
- High-energy trauma
Anatomic
- Thoracolumbar junction location (T10-L2)
- Most vulnerable region due to transition zone between rigid thoracic and mobile lumbar spine
- Basivertebral foramen: creates structural weakness in posterior vertebral body
- Central and superior vertebral body regions: lowest trabecular bone quality adjacent to basivertebral foramen
Bone Health[16]
- Low bone mineral density (BMD)
- Prevalent vertebral fractures: strong predictor of subsequent fractures
- Prevalent nonvertebral fractures (in men)
- Densitometric Osteoporosis
Medication-Related[17]
- Current glucocorticoid use
- Past glucocorticoid use
- Recent discontinuation of anti-osteoporotic treatment, particularly denosumab
- Aromatase inhibitor use
Medical Comorbidities (Secondary Osteoporosis)
- Glucocorticoid-induced osteoporosis
- Non-malignant hemopathies
- Primary hyperparathyroidism
- Hypercorticism
- Anorexia nervosa
- Pregnancy and lactation-associated osteoporosis
Other
- Functional Status Risk Factors
- Walking aid use
- Iatrogenic Risk Factors
- Previous vertebroplasty procedure
Differential Diagnosis
Differential Diagnosis Back Pain
- Fractures
- Neurological
- Musculoskeletal
- Autoimmune
- Infectious
- Pediatric
Clinical Features


History
- It is important to characterize the mechanism of injury
- Most patients will present with acute back pain
- Characterize timing, onset of symptoms
- Was the patient ambulatory after the injury
- Are there any associated symptoms including
- Neurological: weakness, numbness, paresthesia
- Bowel or bladder dysfunction
- A comprehensive trauma examination should be performed
- Up to 50% of patients have associated injuries[9]
Physical Exam: Physical Exam Back
- Look for swelling or external signs of trauma
- Back bruising (sensitivity 6.9%, specificity 98.6%)[20]
- Palpation
- Range of motion is often limited
- Excessive range of motion should be avoided in the acute setting
- Strength
- Should document by myotome from L1 to S1
- Abductor hallucis (AbH) motor function (predictive of outcome)[21]
- Sensory testing
- Dermatomal sensory testing (light touch and pinprick)
- Sacral sensation (S4-S5 dermatomes - predictive of outcome)
- Perianal sensation
- Reflexes
- Deep tendon reflexes (patellar, Achilles)
- Ankle spasticity (predictive of outcome)
- Bulbocavernosus Reflex
- Anal wink reflex
- Sphincter Function
- Rectal tone on digital rectal examination
- Urethral sphincter function (assess for urinary retention)
Special Tests
- There are no widely accepted, evidenced based special tests to evaluate for Burst Fracture
Evaluation



Radiographs
- Consider: Standard Thoracic Spine Radiographs, Standard Lumbar Spine Radiographs
- Standard projections: Anteroposterior (AP) and lateral
- Consider "Swimmers Lateral" if upper thorax is obscured
- Diagnostic performance
- Sensitivity: 49-62% for thoracic spine fractures, 67-82% for lumbar spine fractures[25]
- Accuracy improves with observer experience
- Clinical significance of fractures missed on radiographs is uncertain
- Radiographic Findings
- Moderate to marked anterior wedging of the vertebral body
- Increased interpedicular distance (IPD): Present in 95% of burst fractures[26]
- Narrowing of the spinal canal from displaced vertebral body fragments
- Posterior vertebral body line disruption
- AP: widening of pedicals, deformity in coronal plane
- Lateral: retropulsion into canal, kyphosis
- Limitations of Plain Radiography[27]
- Qualitatively acceptable but quantitatively inadequate for treatment planning
- Underestimates vertebral body comminution compared to CT
- Cannot reliably assess: spinal canal, posterior ligamentous complex, disc, spinal cord
CT
- General[28]
- ACR Appropriateness Criteria recommend CT as the primary imaging modality
- Better evaluation of osseous pathology
- Sensitivity: 94-100% for identifying thoracolumbar spine fractures
- Superior to radiographs for evaluating bone anatomy, especially in polytrauma patients
- CT Findings in burst fractures
- Vertebral body: comminution, fragmentation, retropulsion, loss of height, saggital split
- Spinal canal space is measured in sagittal transverse
- Posterior element: lamina, spinous process, facet joint, interspinous widening[29]
- Kyphotic deformity
MRI
- Indications[30]
- Neurological deficit or suspected spinal cord injury
- Indeterminate PLC status on CT (single positive CT finding)
- May influence management in up to 25% of patients with thoracolumbar fractures
- CT findings suggesting soft tissue injury: Canal compromise >19%, Local kyphosis >14°
- Useful to evaluate
- Spinal Cord, thecal scal
- Soft tissue structures
- Posterior Ligament complex
- MRI findings in burst fractures
- Evaluate the posterior ligament complex (91% sensitivity, 100% specific)[31]
- Disc injuries including herniation, extrusion, annular tears, endplate disruption, widening
- Spinal canal and neural elements: cord (compression, contusion, hemorrhage), nerve root, epidural
- Bone marrow: indicates acute fractures (vertebral body), posterior element may indicate occult fracture
Classification
Denis Classification
- Type A
- Fracture of both end-plates
- Bone is retropulsed into the canal.
- Type B
- Fracture of the superior end-plate
- Common, occurs due to a combination of axial load with flexion.
- Type C
- Fracture of the inferior end-plate.
- Type D
- Burst rotation
- May be misdiagnosed as a fracture-dislocation
- Mechanism: axial load and rotation.
- Type E
- Burst lateral flexion
Thoracolumbar Injury Classification and Severity Score
- Injury morphology
- Compression (+1 point)
- Burst (+1)
- Rotation/translation (+3)
- Distraction (+4)
- Neurologic status
- Intact (+0 point)
- Nerve root (+2)
- Incomplete Spinal cord or conus medullaris injury (+3)
- Complete Spinal cord or conus medullaris injury (+2)
- Cauda equina syndrome (+3)
- Posterior ligamentous complex integrity
- Intact (+0 point)
- Suspected/indeterminate (+2 point)
- Disrupted (+3 point)
Management


Goals
- Management is somewhat controversial, especially without neurological benefit
- Treatment goals
- Stabilize the spine
- Prevent short, long-term deformity
- Prevent neurological decline
- Nonoperative advantages
- Avoid risks of surgical intervention
- Decreased costs
- Surgical advantages[34]
- Better correction of kyphotic deformity
- Greater initial stability
- Opportunity to perform direct or indirect decompression of neural elements
- Decreased requirements for external immobilization
- Earlier return to work
Nonoperative
- Indications
- Must be neurologically intact
- Intact posterior ligament complex
- Consider with kyphosis <30°, vertebral body lost <50% height
- 2- and 3-column injured Denis type A, B, and C thoracolumbar burst fractures with intact facet joints[35]
- Single-level closed burst fracture and no fracture dislocations or pedicle fractures[36]
- Conservative treatment consists of combination of:
- Limiting motion of the spine
- Postural reduction
- Bed rest
- Thoracolumbar Orthosis
- Functional rehabilitation
Operative
- Indiocations
- Neurological deficits
- Unstable fracture pattern including injury to posterior ligament complex, kyphosis
- Technique
- Posterior spinal fusion
- Anterior decompression, stabilization
- Posterior decompression, fusion
- Posterior corpectompy, ventral decompression
Rehab and Return to Play


Nonoperative Rehabilitation Protocol
- Phase 1: Acute (Weeks 0–2)
- Goals: Pain control, neuro monitoring, early mobilization
- Multimodal analgesia, ice
- Early mobilization (avoid bed rest >48–72 hrs)
- Log-roll for bed mobility
- TLSO optional (6–12 weeks if used)
- Serial neuro exams, monitor radicular symptoms
- Phase 2: Early Rehab (Weeks 2–6)
- Goals: Improve mobility, initiate core stability
- Progressive ambulation, ADLs as tolerated
- Avoid lifting >5–10 lbs, bending/twisting
- Gentle ROM, isometric core, LE strengthening
- Posture + breathing work
- Wean TLSO as tolerated
- Phase 3: Intermediate (Weeks 6–12)
- Goals: Restore strength, endurance
- Gradual return to activities, lift 10–20 lbs
- Low-impact cardio (walk, bike)
- Core strengthening, dynamic stabilization
- Proprioception + flexibility
- Discontinue brace when pain-free
- Phase 4: Advanced (Weeks 12–24)
- Goals: Return to full function
- Return to work/sport progression
- Resistance training + functional movements
- Plyometrics if appropriate
- Criteria: Pain-free, Full/near-full ROM, Strength ≥80–90% baseline, No functional compensation
Burst Fracture Rehab Program PDFs
- AAOS Back Pain Rehab PDF
- Mayo Clinic Low Back Pain Exercises PDF
- Exercises for Back Pain after Spinal Fractures PDF
- Spine Fractures Patient Handout PDF
Return to Play
- Prerequisites
- Pain-free at rest and with activity
- Normal neurological exam
- Full strength (baseline/contralateral)
- Full, pain-free ROM
- Radiographic stability
- Completed rehab progression
- Timeline
- Nonoperative: Non-contact (8–12 weeks), Contact (3–6 months)
- Operative: Contact (6–12+ months, longer with fusion)
- Sport Risk: Low (3–6 months), Moderate (6–9 months), High (≥9–12 months)
- Progression
- Phase 1: sport specific, drills, agility, conditioning, no contact (12-16 weeks)
- Phase 2: non contact practice, team drills, simulated play (16-20 weeks)
- Phase 3: limited, controlled contact, protective equipment required (20-24 weeks)
- Phase 3: full return to play (24+ weeks)
Prognosis and Complications
Prognosis
- Neurological intact patients
- Most patients do well if neurologically intact initially, regardless of treatment modality[37]
- Nonoperative: most investigators have found rare or no neurologic deterioration in initially neurologically intact patients[38]
- No significant differences in outcomes at 2-year follow-up between surgical and nonsurgical groups[37]
- Patients with neurological deficits
- Factors predicting failure of non surgical management[41]
- Greater initial kyphosis (8° vs 3° in successful nonoperative cases)
- Higher canal stenosis (52% vs 37%)
- Higher load-sharing classification scores (6.9 vs 5.8)
- Greater vertebral body fragmentation
Complications
- Neurological deterioation
- Includes neuropathies and myelopathies
- Incidence: 0-3% in most modern series of nonoperatively treated patients[42]
- Development of radicular pain with mobilization occurs in approximately 6% of patients[43]
- Risk factors: greater canal stenosis, posterior ligament complex disruption, specific fracture patterns.
- Progressive Kyphosis
- More common with nonoperative treatment
- Average kyphosis progression is modest (4-5° loss of correction in nonoperative group)
- Chronic Pain
- Occurs in both operative and nonoperative groups
- Long-term studies suggest nonoperatively treated patients may have less chronic pain[11]
- Pain limiting mobilization is the most common reason for failure of nonoperative management (25% of cases)
- Structural
- Kyphosis
- Scoliosis
- Loss of normal lumbar lordosis
- Typical surgical complications
- Overall complication rates are higher in surgical groups (21/41 vs 6/38 in pooled analysis)
See Also
Internal
External
- Sports Medicine Review Back Pain: https://www.sportsmedreview.com/by-joint/back/
References
- ↑ Holdsworth F. Fractures, dislocations and fracture-dislocations of the spine. J Bone Joint Surg Br 1963;45:6 - 20.
- ↑ 2.0 2.1 2.2 Denis, Francis. “The Three Column Spine and Its Significance in the Classification of Acute Thoracolumbar Spinal Injuries.” Spine, vol. 8, no. 8, 1983, pp. 817–31.
- ↑ 3.0 3.1 3.2 Vaccaro, Alexander R., et al. “A New Classification of Thoracolumbar Injuries: The Importance of Injury Morphology, the Integrity of the Posterior Ligamentous Complex, and Neurologic Status.” Spine, vol. 30, no. 20, 2005, pp. 2325–33.
- ↑ Esses SI, Botsford DJ, Kostuik JP. Evaluation of surgical treatment for burst fractures. Spine 1990;15:667- 73.
- ↑ Gertzbein SD: Scoliosis Research Society. Multicenter spine fracture study. Spine (Phila Pa 1976) 17:528–540, 1992
- ↑ Lee, Patrick, Tim B. Hunter, and Mihra Taljanovic. "Musculoskeletal colloquialisms: how did we come up with these names?." Radiographics 24.4 (2004): 1009-1027.
- ↑ Vaccaro, Alexander R., et al. "AOSpine thoracolumbar spine injury classification system: fracture description, neurological status, and key modifiers." Spine 38.23 (2013): 2028-2037.
- ↑ 8.0 8.1 Image courtesy of radiologyassistant.nl
- ↑ 9.0 9.1 9.2 9.3 Abudou, Minawaer, et al. "Surgical versus non‐surgical treatment for thoracolumbar burst fractures without neurological deficit." Cochrane Database of Systematic Reviews 6 (2013).
- ↑ Denis F. Spinal instability as defined by the three-column spine concept in acute spinal trauma. Clin Orthop 1984;189:65- 76.
- ↑ 11.0 11.1 11.2 11.3 Wood, Kirk B., et al. “Operative Compared with Nonoperative Treatment of a Thoracolumbar Burst Fracture without Neurological Deficit.” The Journal of Bone and Joint Surgery. American Volume, vol. 85, no. 5, 2003, pp. 773–81.
- ↑ Yan, Liang, et al. "Clinical case-series report of traumatic cauda equina herniation: a pathological phenomena occurring with thoracolumbar and lumbar burst fractures." Medicine 96.14 (2017): e6446.
- ↑ 13.0 13.1 13.2 Magerl, Friedrich, et al. “A Comprehensive Classification of Thoracic and Lumbar Injuries.” European Spine Journal, vol. 3, no. 4, 1994, pp. 184–201.
- ↑ Holdsworth, Frank. “Fractures, Dislocations, and Fracture-Dislocations of the Spine.” The Journal of Bone and Joint Surgery. British Volume, vol. 45, no. 1, 1963, pp. 6–20.
- ↑ van der Klift, Marjolein, et al. "Risk factors for incident vertebral fractures in men and women: the Rotterdam Study." Journal of Bone and Mineral Research 19.7 (2004): 1172-1180.
- ↑ van der Klift, Marjolein, et al. "Risk factors for incident vertebral fractures in men and women: the Rotterdam Study." Journal of Bone and Mineral Research 19.7 (2004): 1172-1180.
- ↑ Che, H., et al. "Vertebral fractures cascade: potential causes and risk factors." Osteoporosis International 30.3 (2019): 555-563.
- ↑ Almoallim, Hani, et al. "Approach to Musculoskeletal Examination." Skills in Rheumatology (2021): 17-65
- ↑ Ostelo, Raymond WJG. "Physiotherapy management of sciatica." Journal of physiotherapy 66.2 (2020): 83-88.
- ↑ 20.0 20.1 20.2 Hsu, Jeremy M., Tony Joseph, and Andrew M. Ellis. "Thoracolumbar fracture in blunt trauma patients: guidelines for diagnosis and imaging." Injury 34.6 (2003): 426-433.
- ↑ Dailey, Andrew T., et al. "Congress of neurological surgeons systematic review and evidence-based guidelines on the evaluation and treatment of patients with thoracolumbar spine trauma: classification of injury." Neurosurgery 84.1 (2019): E24-E27.
- ↑ Image courtesy of radiologymasterclass.uk
- ↑ An, Ki-Chan, Dae Hyun Park, and Yong-Wook Kwon. "Relationship between lamina fractures and dural tear in low lumbar burst fractures." Journal of the Korean Fracture Society 24.3 (2011): 256-261.
- ↑ Kohno, Motonori, et al. "Surgical intervention for osteoporotic vertebral burst fractures in middle-low lumbar spine with special reference to postoperative complications affecting surgical outcomes." Neurologia medico-chirurgica 59.3 (2019): 98-105.
- ↑ Hassankhani, Alvand, et al. "ACR appropriateness criteria® acute spinal trauma: 2024 update." Journal of the American College of Radiology 22.5 (2025): S48-S66.
- ↑ Li, Yao, et al. "Correlation of interpedicular distance with radiographic parameters, neurologic deficit, and posterior structures injury in thoracolumbar burst fractures." World Neurosurgery 118 (2018): e72-e78.
- ↑ Izzo, Roberto, et al. "Imaging of thoracolumbar spine traumas." European journal of radiology 154 (2022): 110343.
- ↑ Dai, Li-Yang, et al. "Plain radiography versus computed tomography scans in the diagnosis and management of thoracolumbar burst fractures." Spine 33.16 (2008): E548-E552.
- ↑ Aly, Mohamed M., et al. "Multicenter external validation of the accuracy of computed tomography criteria for detecting thoracolumbar posterior ligamentous complex injury." Neurosurgery 96.6 (2025): 1236-1248.
- ↑ Raksin, P. B., et al. "Congress of neurological surgeons systematic review and evidence-based guidelines on the evaluation and treatment of patients with thoracolumbar spine trauma: prophylaxis and treatment of thromboembolic events." Neurosurgery 84.1 (2019): E39-E42.
- ↑ Pizones, Javier, et al. "Prospective analysis of magnetic resonance imaging accuracy in diagnosing traumatic injuries of the posterior ligamentous complex of the thoracolumbar spine." Spine 38.9 (2013): 745-751.
- ↑ Lee, Yohan, et al. "Percutaneous pedicle screw fixation in thoracolumbar fractures: comparison of results according to implant removal time." Clinics in Orthopedic Surgery 11.3 (2019): 291-296.
- ↑ Kim, Hyeun Sung, et al. "Acute burst fracture in Kummell’s disease with acute onset neurological deficit: a case report on role of spinal stability and technical notes on “pivot ligamentotaxis”." BMC surgery 19.1 (2019): 49.
- ↑ Dai, Li-Yang, et al. "A review of the management of thoracolumbar burst fractures." Surgical neurology 67.3 (2007): 221-231.
- ↑ Agus H, Kayali C, Arslantas M. Nonoperative treatment of burst type thoracolumbar vertebra fractures: clinical and radiological results of 29 patients. Eur Spine J 2005;14:536 - 40.
- ↑ Shen WJ, Liu TJ, Shen YS. Nonoperative treatment versus posterior fixation for thoracolumbar junction burst fractures without neurologic deficit. Spine 2001;26:1038- 45.
- ↑ 37.0 37.1 Sadiqi, Said, et al. "Functional Outcomes Between Surgical and Nonsurgical Treatment for Neurologically Intact Patients With Thoracolumbar Burst Fractures as Measured by the AO Spine PROST." Spine (2026): 10-1097.
- ↑ Cantor JB, Lebwohl NH, Garvey T, Eismont FJ. Nonoperative management of stable thoracolumbar burst fractures with early ambulation and bracing. Spine 1993;18:971- 6.
- ↑ Goulet, Julien, et al. "Morphological features of thoracolumbar burst fractures associated with neurological outcome in thoracolumbar traumatic spinal cord injury." European Spine Journal 29.10 (2020): 2505-2512.
- ↑ Kato, So, et al. "Does surgical intervention or timing of surgery have an effect on neurological recovery in the setting of a thoracolumbar burst fracture?." Journal of orthopaedic trauma 31 (2017): S38-S43.
- ↑ Hitchon, Patrick W., et al. "Nonoperative management in neurologically intact thoracolumbar burst fractures: clinical and radiographic outcomes." Spine 41.6 (2016): 483-489.
- ↑ Abudou, Minawaer, et al. "Surgical versus non‐surgical treatment for thoracolumbar burst fractures without neurological deficit." Cochrane Database of Systematic Reviews 6 (2013).
- ↑ Best, Shawn A., et al. "The neurologically intact patient with TLICS 4 or 5 burst fracture should be given a trial of nonoperative management." Medicine 103.46 (2024): e40304.
Created by:
John Kiel on 9 May 2020 22:15:47
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22 April 2026 18:50:15
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