01Approach to the Critical Patient/attcp49

Immediate priorities

›Airway and neurological status

›Altered consciousness or agitation suggesting cord or vertebral artery injury

›GCS assessment

›Focal neurological deficits

›If neurological deficit on presentation, immediate spinal immobilization

›Hard cervical collar

›Spine board only if transport needed

›High-energy mechanism requiring trauma protocol

›MVC or fall from height

›Axial loading mechanism

›Stability and spinal clearance pathway

›Determine if high-energy or low-energy mechanism

›High-energy: treat as unstable until CT clears all cervical/thoracic levels

›Low-energy: isolated spinous process fracture likely stable

›Neurological exam completeness

›Motor strength bilateral upper and lower extremities

›Sensory level if deficit suspected

›Reflexes and Babinski

›Alarm feature screen

›Midline step-off or significant swelling

›Bilateral upper extremity symptoms

›Bowel or bladder dysfunction

Key clinical decision points

›Spinal instability assessment

›Isolated spinous process fracture not involving lamina

›Canadian C-Spine Rule classifies as clinically unimportant

›No evidence of instability

02History/hx64

Mechanism and presentation

›Classic mechanism

›Forceful flexion of the cervical spine against resistance

›Shoveling heavy material (original description)

›Golf swing, especially beginners

›Paddling, rowing, rock climbing

›Sudden onset acute pain

›Audible or palpable "pop" or "click"

›Immediate midline posterior neck or upper back pain

›Repetitive overuse variant

›Insidious onset over days to weeks

›Progressive posterior neck and interscapular pain

›Training load increase or technique change

›Pain characteristics

›Location

›Midline posterior neck at C7 or T1 level most common

›Upper thoracic involvement to T3

›Aggravating factors

›Neck flexion

›Shoulder elevation or abduction

›Resisted arm movements

›Associated symptoms

›Paraspinal muscle spasm

›Interscapular radiation

›Headache at occiput

Alarm features

›Red flag symptoms

›Neurological deficits

03Physical Exam/exam66

Vitals and general

›Initial assessment

›Level of consciousness and orientation

›GCS if any alteration

›Agitation or combativeness

›Gait and station if ambulatory

›Antalgic posture

›Upper extremity guarding

›Vital signs

›Tachycardia suggesting pain severity or shock

›Hypertension from pain response

Spine and neck exam

›Posterior midline palpation

›Focal spinous process tenderness

›Hallmark finding at C6, C7, or T1 to T3

›Step-off or crepitus suggesting displacement

›Paraspinal tenderness

›Trapezius spasm

›Rhomboid and levator scapulae involvement

›Absence of anterior midline tenderness

›Favors isolated posterior element injury

›Anterior tenderness suggests anterior column involvement

›Cervical range of motion

›Flexion most restricted and painful

›Stretches posterior ligamentous complex and attached muscles

›Quantify limitation

›Extension, lateral rotation, and lateral flexion

›Less restricted in isolated spinous process fracture

04Differential Diagnosis/ddx50

Life threats and serious mimics

›Unstable cervical injuries

›Facet fracture or dislocation

›ICD-10 S12.40XA

›Radiculopathy or myelopathy features

›Requires CT and often MRI for characterization

›Vertebral body compression fracture

›ICD-10 S12.000A

›Anterior column involvement

›Kyphotic deformity

›Ligamentous disruption without bony injury

›Normal plain films

›MRI required for diagnosis

›Instability risk highest

›Vascular injury

›Vertebral artery dissection

›Posterior neck pain with dizziness or diplopia

›Stroke risk

›CT angiography of neck vessels for diagnosis

›Carotid artery dissection

›Anterior neck pain with Horner syndrome

›Ipsilateral headache

Common and clinically relevant mimics

›Soft tissue and musculoskeletal

›Cervical strain or sprain

›ICD-10 S13.4XXA

›No fracture on imaging

›Diffuse muscle tenderness

05Laboratory Tests/lt30

Routine labs

›Standard evaluation

›Labs generally not indicated for isolated clay shoveler's fracture

›No infection, thrombosis, or metabolic emergency

›Clinical and imaging diagnosis

›Complete blood count when concern for pathologic fracture

›Anemia of malignancy

›Leukocytosis from infection or malignancy

›Comprehensive metabolic panel when pathologic fracture suspected

›Hypercalcemia from bone metastasis or myeloma

›Renal function for contrast CT or NSAID use

Bone and metabolic markers

›Pathologic fracture workup

›Erythrocyte sedimentation rate and CRP

›Elevation suggests infectious, inflammatory, or malignant process

›Nonspecific but useful screening

›Serum protein electrophoresis

›Multiple myeloma screening

›Monoclonal protein band identification

›Alkaline phosphatase and calcium

›Bone metastasis marker

›Hypercalcemia of malignancy

›Bone health assessment when osteoporosis suspected

›Serum 25-hydroxyvitamin D

›Target > 50 nmol/l for bone health

›Deficiency correction improves healing

›Calcium and parathyroid hormone

›Secondary hyperparathyroidism assessment

06Diagnostic Tests/dt88

Scoring Systems

›Cervical spine imaging decision rules

›Canadian C-Spine Rule

›Applied to alert, stable, trauma patients

›High-risk factors mandating imaging

›Age 65 or older

›Dangerous mechanism

›Paresthesias in extremities

›Clinically unimportant injury classification

›Isolated spinous process fracture not involving lamina

›Canadian C-Spine Rule classifies this as low-risk

›ACEP Level B recommendation for rule use in alert stable adults

›NEXUS criteria

›Midline cervical spine tenderness

›Focal neurological deficit

›Altered level of alertness

›Intoxication

›Distracting injury

›All five criteria absent allows clinical clearance

›Surgical decision scoring

›SLIC Subaxial Injury Classification System

›Morphology component: 0 to 4 points

›Disco-ligamentous complex: 0 to 2 points

›Neurological status: 0 to 4 points

›Isolated spinous process fracture typically scores 1 to 2 total

›Score 4 or less supports nonoperative management

›Score above 5 suggests surgical consideration

MRI

›MRI cervical and thoracic spine indications

›Primary indications

›Any neurological deficit unexplained by CT

›Radiographically occult injury with high clinical suspicion

›Adolescent with soft-tissue avulsion equivalent

›Ligamentous injury detection

›T2 hyperintensity posterior ligamentous complex

›Interspinous ligament disruption

›Facet capsule injury

›Cord and soft tissue evaluation

›Cord edema or contusion

›Disc herniation with cord compression

›Epidural hematoma

›MRI technical considerations

›Protocol

›T1, T2, and STIR sequences

›Sagittal and axial planes minimum

›Contraindications

›Non-MRI compatible implants

›Unstable patient requiring monitoring equipment

›Sensitivity for soft tissue injury

›Superior to CT for disc and ligament pathology

›Required when neurological deterioration occurs

CT

›CT cervical and thoracic spine

›Gold standard for bony injury characterization

›Sensitivity 98 to 100% for clinically significant cervical injuries

›Lateral plain film sensitivity approximately 36%

›CT recommended when imaging clinically indicated

›Indications

›High-energy mechanism with positive clinical screen

›Neurological deficit present

›Plain film inadequate or positive

›Cervicothoracic junction poorly visualized on plain films

›CT findings in clay shoveler's fracture

›Avulsed spinous process fragment

›No laminar or facet fracture in isolated cases

›Displacement quantification

›Associated edema in paraspinal soft tissues

›Protocol considerations

›Without contrast for bony injury

›With contrast CT angiography if vertebral artery injury suspected

›Thin-cut reconstructions for cervicothoracic junction

›Plain radiography

›Initial imaging in selected stable low-energy presentations

›Lateral cervical spine may show ghost sign

›Double spinous process shadow from displaced avulsion fragment

›Anteroposterior view for spinous process alignment

›Limitations

›Cervicothoracic junction (C7-T1) frequently obscured

›Swimmer's view or CT required for this region

›Low overall sensitivity mandates CT if any uncertainty

Ultrasound

›Point-of-care ultrasound

›Limited role for clay shoveler's fracture diagnosis

›Not a standard diagnostic tool for spinal injuries

›May show paraspinal soft tissue swelling

›Cannot characterize bony fracture details

›Adjunct uses in trauma context

›FAST exam for associated abdominal injury in high-energy mechanism

›Pneumothorax assessment after significant trauma

›Not recommended as primary diagnostic modality

›CT remains gold standard for fracture characterization

›Operator dependent and bony anatomy obscures views

07Disposition/dispo44

Discharge criteria

›Criteria for emergency department discharge

›Neurological exam intact

›Full strength bilateral upper and lower extremities

›Normal sensation and reflexes

›No Babinski or Hoffmann signs

›Imaging confirmation

›CT or radiograph confirms isolated spinous process fracture

›No laminar, facet, or vertebral body fracture

›No evidence of instability

›Pain control achievable

›Adequate analgesia with oral medications

›Patient can tolerate discharge with home medications

›Reliable follow-up arranged

›Orthopedic or spine surgery clinic within 1 to 2 weeks

›Clear return precautions provided

Orthotic management

›Immobilization decision

›Rigid cervical orthosis for comfort

›Philadelphia or hard collar acceptable

›Typically worn for 4 to 6 weeks

›American College of Surgeons Best Practices Guidelines support nonoperative management with immobilization

›Soft collar alternative

›Comfort use when hard collar poorly tolerated

›Does not provide structural support

›Instructions for use

›Wear during activities that aggravate pain

›May remove for sleep if comfortable

08Treatment/t77

Acute pain management

›First-line analgesics

›NSAIDs

›Ibuprofen 400 to 600 mg PO every 6 to 8 hours with food

›Maximum 2400 mg per day

›Avoid if renal impairment or peptic ulcer history

›Naproxen 500 mg PO every 12 hours

›Maximum 1000 mg per day

›Longer half-life useful for sustained coverage

›Diclofenac 50 mg PO every 8 hours

›Alternative NSAID option

›Diclofenac 1% gel topical application as adjunct

›Acetaminophen

›500 to 1000 mg PO every 6 to 8 hours

›Maximum 4000 mg per day

›Reduce to 2000 mg per day with liver disease or alcohol use

›Combination with NSAID for additive effect

›Class I recommendation for multimodal analgesia

›Adjunct analgesics

›Muscle relaxants for paraspinal spasm

›Cyclobenzaprine 5 to 10 mg PO three times daily

›Short-term use 3 to 7 days preferred

›Avoid in elderly due to anticholinergic effects

›Drowsiness and driving precautions

›Methocarbamol 750 to 1500 mg PO four times daily

›Fewer anticholinergic effects than cyclobenzaprine

›Maximum 8000 mg per day for first 48 hours

›Topical agents

›Diclofenac 1% gel applied to affected area four times daily

›Reduces systemic NSAID exposure

›Local anti-inflammatory effect

›Lidocaine 5% patch applied for 12 hours on and 12 hours off

›Dermal analgesia for localized tenderness

›Maximum 3 patches per application

›Short-term opioids for severe acute pain

›Oxycodone 5 mg PO every 4 to 6 hours as needed

›Use 3 days or fewer

›Constipation prophylaxis with senna

›Avoid prolonged opioid use

›Dependence risk

›Hinders rehabilitation

Physical and activity management

›Activity modification

›Avoid inciting activities immediately

›No shoveling, golf, or overhead lifting during healing

›Activity restriction for 4 to 6 weeks

›Ice application

›15 to 20 minutes every 2 to 4 hours for first 48 to 72 hours

›Ice pack over posterior neck or upper thoracic region

›Gradual return to normal daily activities

›Pain-guided activity progression

›Avoid aggravating postures

›Rehabilitation plan

›Physiotherapy initiation after acute pain phase

›Begin when pain controlled to allow engagement

›Cervical range of motion exercises

›Paraspinal and periscapular strengthening

›Return to sport timeline

›Typically 4 to 6 months for return to full sport participation

›Guided by symptom resolution and imaging follow-up

›Sports medicine or spine specialist guidance for competitive athletes

Cervical immobilization

›Orthotic prescription

›Rigid cervical collar for 4 to 6 weeks

›Philadelphia collar or Miami-J collar

›Comfort-based compliance accepted

›Collar weaning

›Gradual reduction based on pain

›Full discontinuation when pain-free with full range of motion

›Skin care under collar

›Daily inspection for pressure sores

›Padding over bony prominences

Surgical considerations

›Surgery not indicated for isolated clay shoveler's fracture

›No instability or neurological compromise

›ACEP Level C recommendation for conservative management

›Class I recommendation for nonoperative management in stable isolated fractures

›Rare exceptions

›Persistent nonunion causing chronic pain

›Symptomatic malunion limiting function

›Associated unstable injury requiring fixation

09Special Populations/sp76

Pregnancy

›Pregnancy-specific considerations

›Mechanism overlap

›Lifting, carrying, and postural strain during pregnancy

›Increased ligamentous laxity from relaxin

›Higher risk of musculoskeletal injury

›Imaging approach

›Plain radiograph with abdominal shielding when imaging required

›Fetal radiation dose from cervical spine series approximately 0.001 to 0.003 mGy

›CT if plain film inadequate and clinical need clear

›MRI preferred if soft tissue injury or neurological deficit

›Medication safety

›Acetaminophen preferred analgesic in pregnancy

›Safe at standard doses throughout pregnancy

›NSAIDs generally avoided after 20 weeks

›Risk of premature ductus arteriosus closure

›Short-term use before 20 weeks with caution acceptable

›Muscle relaxants avoided

›Cyclobenzaprine safety data limited in pregnancy

›Opioids only for severe pain, shortest duration

›Fetal monitoring

›Viable gestation warrants obstetric consultation

›Electronic fetal monitoring after significant trauma

Geriatric

›Geriatric specific features

›Fracture risk profile

›Osteoporosis increases risk of fracture with low-energy mechanism

›DEXA scan referral for bone density assessment

›Vitamin D and calcium optimization

›Pathologic fracture vigilance

›Malignancy incidence increases with age

›Screen for constitutional symptoms

›Lower threshold for pathologic workup in low-energy fractures

›Medication management

›NSAIDs used with caution

›Renal impairment increases toxicity risk

›GI bleeding risk elevated

›PPI co-prescription when NSAIDs used

›Muscle relaxants generally avoided

›Anticholinergic effects in older adults

›Fall risk increased with cyclobenzaprine

›Beers Criteria lists cyclobenzaprine as potentially inappropriate

›Acetaminophen preferred first-line

›500 mg PO every 6 hours in frail older adults

›Reduce dose with low body weight

›Rehabilitation considerations

›Early physiotherapy reduces deconditioning

›Home safety assessment for fall prevention

›Compliance with orthosis may be challenging

Pediatrics

›Pediatric specific considerations

›Age-related injury pattern

›Adolescents more vulnerable to clay shoveler's injury

›Secondary ossification centers not yet fused

›Soft-tissue avulsion equivalent possible with normal radiographs

›MRI recommended when adolescent with suspected fracture and normal radiographs

›STIR sequence shows marrow edema and soft-tissue injury

›Growth plate injury assessment

›Activity context

›Competitive youth sports

›Baseball pitching and batting

›Wrestling and gymnastics

›Swimming and diving

›School sports return planning with coach and trainer involvement

›Analgesic dosing

›Acetaminophen weight-based

›15 mg per kg per dose PO every 4 to 6 hours

›Maximum 75 mg per kg per day

›Ibuprofen weight-based

›10 mg per kg per dose PO every 6 to 8 hours

›Maximum 40 mg per kg per day

›Avoid in children under 6 months

›Avoid muscle relaxants in children under 15 years

›Limited safety data

›Increased CNS sensitivity

›Growth and healing considerations

›Bone healing typically faster than adults

›Return to sport guided by orthopedic or pediatric sports medicine specialist

›Physical activity restriction communicated to parents and school

10Background/b80

Epidemiology

›Incidence and prevalence

›Uncommon but recognized cervical spine injury

›Represents a small fraction of cervical spine fractures seen in emergency medicine

›Underdiagnosed due to low radiograph sensitivity

›Population distribution

›Historically described in manual laborers

›Name derived from clay shoveling occupation

›Now predominantly seen in recreational athletes

›Golf most commonly reported sport association

›Young to middle-aged active adults

›Level distribution

›C7 most commonly affected

›Longest spinous process with greatest lever arm

›T1 second most common

›C6 and T2 to T3 also reported

›Morbidity and natural history

›Excellent prognosis for isolated fractures

›Complete resolution of symptoms typical within 4 to 6 months

›Return to full activity expected

›Complications rare

›Fibrous nonunion in minority of cases

›Persistent posterior neck pain if inadequately rested

›Chronic pain with repeated trauma and nonunion

Pathophysiology

›Injury mechanism

›Avulsion mechanism

›Forceful flexion of neck with simultaneous shoulder girdle movement

›Trapezius, rhomboids, and serratus posterior superior insert on spinous processes

›Sudden contraction under load avulses spinous process tip

›Anatomy of C7 vulnerability

›C7 spinous process longest and most prominent

›Attachment of ligamentum nuchae, trapezius, and rhomboid minor

›Greatest biomechanical stress during flexion-extension cycle

›Stress fracture variant

›Repetitive low-grade forces exceed bone remodeling capacity

›Progressive trabecular microfracture

›Insidious onset typical in overuse variant

›Fracture characteristics

›Fracture morphology

›Avulsion of spinous process tip

›Typically oblique or transverse fracture pattern

›Minimal to moderate displacement inferiorly

›Stability

›Anterior and middle columns intact

›Posterior ligamentous complex preserved in isolated cases

›Denis three-column model: posterior column only injury

›Healing biology

›Fibrous union common rather than bony union

›Symptoms resolve despite incomplete osseous healing

›Nonunion does not imply functional impairment

Therapeutic Considerations

›Conservative management rationale

›Mechanically stable injury

›No risk of spinal cord compression from isolated spinous process fracture

›Collar provides comfort not structural protection

›Activity restriction allows soft tissue healing

›Evidence base

›No randomized controlled trials; management by consensus and case series

›American College of Surgeons Best Practices Guidelines support nonoperative approach

›Systematic review confirms benign natural history with conservative care

›Multimodal analgesia evidence

›NSAID and acetaminophen combination superior to monotherapy for musculoskeletal pain

›Short-term opioids appropriate for severe acute pain

›Muscle relaxants provide incremental benefit for spasm component

›Rehabilitation evidence

›Early mobilization

›Prolonged immobilization associated with stiffness and deconditioning

›Gradual active range of motion initiated after acute pain phase

›Physical therapy reduces chronic pain risk

›Return to sport criteria

›Pain-free range of motion required

›Full strength tested before contact or high-risk sport return

›Radiographic or CT healing confirmation appropriate before return to high-load activities

›Bone health optimization

›Vitamin D adequacy

›25-hydroxyvitamin D target above 50 nmol/l

›Supplementation 1000 to 2000 IU per day if deficient

›Calcium intake

›1000 to 1200 mg elemental calcium per day from diet and supplementation

›Bisphosphonate therapy for confirmed osteoporosis

›Alendronate 70 mg PO weekly as first-line in postmenopausal women

›Spine specialist guidance when fracture occurs in setting of osteoporosis

11Patient Discharge Instructions/pdi36

copy discharge instructions

›Clay Shoveler's Fracture home care instructions

›Diagnosis explanation

›A small chip of bone broke off the back of a neck vertebra

›This is a stable fracture; the spinal cord is not at risk

›Healing takes 4 to 6 weeks with rest and pain control

›Neck collar instructions

›Wear the hard collar as directed by your doctor

›Wear it during activities that increase pain

›You may remove it for bathing and sleep if comfortable

›Do not return to heavy lifting or sports while in collar

›Pain management at home

›Medications to take

›Ibuprofen or naproxen with food as directed

›Acetaminophen as directed for additional pain relief

›Muscle relaxant if prescribed: take with caution as it causes drowsiness

›Do not drive or operate machinery while taking muscle relaxants

›Ice application

›Ice pack to the back of the neck or upper back for 15 to 20 minutes

›Apply every 2 to 4 hours for the first 48 to 72 hours

›Wrap ice in a cloth to protect skin

›Activity restrictions

›Do not shovel, golf, paddle, or perform overhead lifting until cleared

›Avoid sudden head movements or heavy carrying

›Gradual return to light daily activities as pain allows

›Full return to sport is typically 4 to 6 months after injury

›Follow-up appointments

›Orthopedic or spine clinic within 1 to 2 weeks

12References/r31

Guidelines and key sources

›Clinical guidelines and decision rules

›Canadian C-Spine Rule

›Stiell IG et al. NEJM 2003; Canadian C-Spine Rule validation

›Classifies isolated spinous process fracture not involving lamina as clinically unimportant

›ACEP Level B recommendation for application in alert stable adult trauma patients

›NEXUS Criteria

›Hoffman JR et al. NEJM 2000

›National Emergency X-Radiography Utilization Study

›ACEP Level B recommendation

›SLIC Scoring System

›Vaccaro AR et al. Spine 2007; subaxial injury classification

›Isolated spinous process fracture typically scores 1 to 2

›Score 4 or less supports nonoperative management

›Key clinical references

›Clay shoveler's fracture epidemiology and management

›Torg JS et al. Clay shoveler's fracture case series and review

›Numerous sports medicine case reports confirm conservative management success

›American College of Surgeons Best Practices Guidelines

›Nonoperative management with immobilization for stable spinous process fractures

›Pediatric spine injuries

›Copley LA et al. Pediatric spine trauma review

›MRI for soft-tissue avulsion equivalent in adolescents

›Coding references

›ICD-10 coding for spinous process fracture

›S12.400A displaced fracture of fourth cervical vertebra spinous process initial encounter

›S12.401A nondisplaced fracture of fourth cervical vertebra spinous process initial encounter

›S12.690A displaced fracture of spinous process of seventh cervical vertebra initial encounter

Evidence & Review

Evidence & Review