Temporal Bone Fracture: Otologic Emergency Management

The temporal bone occupies the lateral skull base; five regions: squamous (lateral wall), petrous (pyramidal mass containing inner ear and facial canal), mastoid (post-auricular, aerated), tympanic (ear canal wall), styloid (inferior process). The most critical region is the petrous part — inner ear (cochlea, vestibule, semicircular canals), facial canal, sigmoid sinus, jugular vein, internal carotid artery.

Mechanism: high-energy head trauma — motor vehicle accidents (commonest, 50-60%), falls (from height), blows (objects, assault), sport injuries, gunshot wounds (penetrating — extensive bone destruction). Sufficient kinetic energy to fracture skull base required.

Classical classification — longitudinal (commonest, 70-80%): line runs along the long axis of the temporal bone. Mechanism — lateral blow to temporal/parietal. Otic capsule usually spared (spares the capsule), conductive HL common (ossicular or canal injury), sensorineural rare (10%), facial injury 10-20%.

Transverse (10-20%): line perpendicular to the temporal bone (anteroposterior). Mechanism — frontal or occipital impact. Traverses otic capsule — sensorineural HL common (70-90% cochlear injury), vertigo + nystagmus common (vestibular injury), facial nerve injury frequent (40-50%).

Mixed (5-10%): features of both longitudinal and transverse. Usually more severe trauma + multiple fracture lines.

Modern classification — otic capsule sparing (OCS) vs otic capsule violating (OCV): more clinically meaningful. OCV cases have 5× more sensorineural HL, 6× more facial injury, 6× more CSF leaks.

Trauma severity: mild (simple fracture, function preserved), moderate (partial loss, may need surgery), severe (complete loss, multiple complications, intracranial injury). GCS correlation — lower GCS associated with more severe temporal bone pathology.

Associated injuries — head trauma context: intracranial haemorrhage (subdural, epidural, intracerebral), pneumocephalus, skull base fracture (raccoon eyes — anterior; Battle sign — posterior, mastoid ecchymosis), cervical spine fracture, polytrauma — pelvis, extremity. Trauma priority: ATLS protocol, life-threatening injuries first. Related service: our otology and hearing centre.

Initial assessment: ATLS (Advanced Trauma Life Support) protocol — A (airway), B (breathing), C (circulation), D (disability — neurology), E (exposure). Life-threatening injuries first. Cervical spine protection + immobilisation (head trauma associated 5-10%).

Otologic examination: after stabilisation. Pinna inspection (laceration, haematoma, perichondritis risk), ear canal (bleeding, CSF, visible bone fragment), tympanic membrane (perforation, haemotympanum — blood in middle ear), Battle sign (mastoid ecchymosis — posterior skull base fracture), raccoon eyes (periorbital ecchymosis — anterior skull base).

Otorrhagia (ear canal bleeding): common. Most due to canal skin laceration or tympanic membrane perforation — simple. But heavy, persistent bleeding or mixed with CSF suggests deeper injury (middle/inner ear, sigmoid sinus, jugular vein).

CSF otorrhoea: clear or blood-stained fluid from the ear. "Halo sign" — bloody fluid on tissue with dry brown centre + clear outer ring (CSF) — bedside test. Beta-2 transferrin assay is the most specific (fluid sample).

Hearing assessment: bedside Rinne-Weber, formal audiometry (when patient cooperates; acute phase formal audiometry difficult). Rinne — conductive loss side bone > air; Weber — sensorineural side lateralises to better ear.

Facial nerve examination: critical — immediate complete paralysis requires urgent surgical decision. Frontal + orbital + buccal + cervical regions (House-Brackmann I-VI). Immediate vs delayed: immediate (at time of trauma) suggests nerve transection or crush — surgical option; delayed (hours-days after) suggests oedema or vascular compromise — usually self-resolves.

Vertigo + nystagmus: spontaneous vertigo (sensation of imbalance) + nystagmus examination. Spontaneous nystagmus beats away from the lesion side — indicates injured vestibular apparatus. Vertigo usually resolves with central compensation over weeks-months.

Imaging: high-resolution temporal bone CT — gold standard. Thin slice (0.5-1 mm), axial + coronal reconstruction. Assessed: fracture pattern (longitudinal/transverse/mixed), otic capsule integrity, ossicular chain (malleus, incus, stapes) integrity, facial canal (widening, fragment), inner ear, sigmoid sinus, jugular bulb, internal carotid, skull base, sinuses.

MRI indications: CSF leak source localisation (T2-weighted), inner ear soft tissue (vestibular and cochlear architecture), facial nerve involvement (FIESTA or CISS sequence), intracranial structures (haematoma, contusion), meningocele/encephalocele.

Other tests: ENoG (electroneurography) — facial nerve function assessment (in immediate complete paralysis with >90% degeneration → surgical indication); audiometry (after stabilisation — pure tone + speech); vestibular tests (if vertigo persists — VNG/ENG, vHIT, calorics).

Most temporal bone fractures are managed conservatively. Surgery is reserved for specific indications — emergency facial paralysis, persistent CSF leak, ossicular damage (late), intracranial pathology.

General supportive care: pain control (paracetamol, ibuprofen — opioid for severe), antiemetic (for vertigo + nausea — meclizine, ondansetron), antibiotic (only for open wound, severe laceration, or CSF otorrhoea + perforation — prophylaxis controversial; not routine; meningitis risk low), aspiration prevention (if voice or swallowing affected), hydration, head-elevated position (if CSF leak).

CSF otorrhoea management: most (80%) close spontaneously within 7-10 days — wound healing + fibrin plug. Conservative: bed rest, head elevation (30-45°), activity restriction (avoid cough, strain, defecation strain — stool softener helpful), antibiotic prophylaxis controversial (modern practice not routine — low meningitis risk; consider in persistent leak). If not closed within 1-2 weeks — endoscopic or transmastoid repair.

Facial paralysis management: critical timing. Immediate complete paralysis: at time of trauma — possible transection or crush; ENoG performed; <90% degeneration → surgical decompression (translabyrinthine or transmastoid opening of facial canal + nerve release + suture/graft if needed) — ideally within 7-14 days; >90% degeneration + EMG fibrillation → surgery indicated.

Delayed paralysis: emerges hours-days later — nerve oedema or vascular compromise. Most (>90%) recover with conservative — corticosteroid (prednisone 1 mg/kg/day, 7-10 days then taper). Surgery rarely needed.

Ossicular injury (incus disarticulation commonest): assessed in late phase. Acute inflammation and oedema preclude exam. After 3-6 months audiometry + middle ear inspection (microscope) — persistent conductive hearing loss → ossiculoplasty (incus reconstruction, malleus-stapes piston, prosthesis).

Haemotympanum: blood in middle ear — common acute finding. Usually resorbs over 6-8 weeks — observation sufficient. Persistent or secondary infection (otitis media) — antibiotic or tympanostomy considered.

Tympanic membrane perforation: small (<25% surface) usually heals spontaneously in 6-12 weeks. Large or failed healing → tympanoplasty (3-6 months later).

Intracranial complications: epidural/subdural haematoma, intracerebral contusion — neurosurgery urgent; some may need evacuation. Pneumocephalus (intracranial air from CSF leak, CSF-middle ear fistula) — conservative (bed rest, head up); persistent/expanding may need surgery.

Vestibular rehabilitation: if vertigo persists (weeks-months) initiate vestibular physiotherapy — balance exercises, head-movement tolerance, visual-vestibular coordination. Most achieve central compensation with symptom resolution.

Late complications — years after: cholesteatoma (epithelial entry into middle ear after penetrating trauma), chronic otitis media (unhealed perforation), skull base meningocele/encephalocele (CSF leak link), benign paroxysmal positional vertigo (BPPV — displaced otoconia), perilymph fistula (vertigo + hearing fluctuation), epilepsy (intracranial injury). Step-by-step details: hearing loss page.

Long-term prognosis depends on fracture pattern and associated injury. OCS (otic capsule spared) is favourable; OCV (otic capsule violated) is poor for hearing + balance.

Long-term hearing loss: conductive loss is repairable in most (80%+) by surgery (tympanoplasty, ossiculoplasty); sensorineural loss is mostly permanent — options for sound delivery (BAHA — bone anchored hearing aid, cochlear implant).

BAHA (bone anchored hearing aid): useful in unilateral sensorineural loss — titanium implant in bone + external aid; contralateral hearing transmitted via bone. Markedly improves QoL in unilateral total sensorineural loss (post-transverse fracture).

Cochlear implant: in bilateral severe-profound sensorineural loss when hearing aids insufficient. Postlingual deafness (adult-onset) does well.

Facial nerve rehab: partial palsy — corticosteroid + facial muscle physiotherapy; permanent palsy — eye protection (artificial tears, night taping, weighted upper-lid), advanced reconstruction (nerve graft, dynamic reanimation — temporalis transfer, masseter or hypoglossal-facial anastomosis, free flap; static — fascia lata fixation).

Vertigo rehab: vestibular rehabilitation programme — balance exercises (static + dynamic), head-movement tolerance (Cawthorne-Cooksey), visual motion tolerance (busy environment adaptation), Tai Chi, walking. Professional supervision (physiotherapy) drives outcome.

BPPV (benign paroxysmal positional vertigo) treatment: post-temporal-bone-trauma BPPV is common (otoconia displaced into canals). Epley manoeuvre (posterior canal — commonest) or Barbecue (lateral) resolves most in a few sessions.

Psychosocial: head trauma + sensory losses (hearing, balance, facial appearance) cause psychological impact — depression, anxiety, PTSD (especially after MVA), work loss, social isolation. Psychological support + group therapy useful.

Legal and occupational: trauma compensation, insurance (especially work or traffic accident); functional impairment documentation (formal report); occupational fitness reassessment (e.g., hearing/balance for drivers).

Follow-up programme: first month — weekly or biweekly ENT + neurology, CSF leak monitoring, facial nerve progression, vertigo trend; next 6 months — monthly, audiometry (3 and 6 months), planning of further surgery if needed (ossiculoplasty, CSF closure); >1 year — 6-monthly, functional rehab review, long-term screening (cholesteatoma CT, BPPV recurrence). Multidisciplinary — ENT, neurology, neurosurgery, physiotherapy, audiology, psychology. Related reading: our patient testimonials.