Ear Trauma / Auricular Reconstruction | Injury assessment and urgent decisions

The pinna has thin cartilage that depends on overlying skin for blood supply, yet the ear has good blood supply and can keep tissue alive on small pedicles. Doctors therefore use conservative debridement and first reapproximate known landmarks, then adjoining tissue, with fine sutures; cartilage sutures are usually unnecessary. Skin may be closed with 6-0 or 7-0 nylon or other fine suture, and torn cartilage repaired with a minimum number of sutures. In avulsive injuries, missing or pedicle-attached segments should be returned to proper position and secured to skin. Postoperative care may include bed rest, a supportive bandage, ice, heparin and antibiotics.

The ear has a good blood supply, so even completely avulsed tissue can sometimes be replaced in its proper position. Replantation depends on tissue quality, how the injury happened, and overall condition; a sharp cut near the ear base has the best chance. In hospital, severed tissue is cleansed and kept in cold sterile saline until reimplantation; leech therapy may help. Conservative debridement preserves tissue, and cartilage repair uses fine sutures. Haematoma can threaten repair, so blood collection is prevented. Sutures first reapproximate known landmarks; cartilage suturing is usually unnecessary, but fine chromic sutures may be used if needed. Torn cartilage should be repaired with minimal sutures.

The ear gets blood from several vessels: front branches from the superficial temporal artery, back branches from the posterior auricular and occipital arteries, with veins running alongside them. After trauma, a partly attached ear may keep only a lower tissue bridge, so survival depends on which vessels remain connected. Repair planning also considers defect size, cartilage loss and available skin; larger or total defects may need rib cartilage or other reconstruction. Surgeons also consider whether skin and subcutaneous tissue are intact, since large wounds affecting the auricle and temporal region may preclude autologous reconstruction. The exact method depends on injury pattern and tissue condition, so assessment is individualized.

Blunt trauma can shear the perichondrium from ear cartilage, letting blood collect between skin and cartilage. If not evacuated quickly, the clot can scar or calcify, and cartilage may resorb or react, producing cauliflower ear. Hematomas are evacuated as quickly as possible to avert this adverse sequela. Drainage may use aspiration or incision, followed by a bolster or compression dressing to prevent re-accumulation. A compression dressing is employed regardless of drainage technique, and significant lacerations may need antibiotic-impregnated gauze with a light head wrap. Delayed pain after treatment warrants immediate inspection because it may indicate hematoma or infection. Cartilage infection is serious because cartilage has poor blood supply and may need intravenous antibiotics or debridement.

After blunt or shearing trauma, blood can collect between ear cartilage and its covering. If neglected, it may scar and harden, producing a thickened cauliflower ear; it can also cause cartilage resorption or reactive cartilage growth, leaving permanent fibrotic deformity. Infection or chondritis may worsen damage. Blood trapped there can reduce nourishment to cartilage, so early treatment matters. If swelling appears after injury, urgent assessment is safer than waiting. If deformity has already developed, correction may be more complex. A clinician can assess whether drainage, compression or later reconstruction is appropriate. Prompt incision and drainage with compression is described to reduce this risk, but timing and injury severity matter.

The examination looks for cuts, blood collection and exposed cartilage on both ear surfaces. Otoscopy is used when lacerations extend into the external auditory meatus. Looking inside the canal checks the ear canal and eardrum for narrowing or a tear that can reduce hearing. It can also show damage to the front or lower canal wall. In traumatic deformities, the canal is checked for narrowing and the eardrum is examined. Hearing tests, middle-ear imaging and, sometimes, balance-organ checks may be used. If there was a serious head injury, a skull-base fracture should be excluded. These findings guide whether observation, repair or referral is appropriate, and no outcome is guaranteed.

Bite wounds are often ragged and contaminated by saliva, so immediate care focuses on cleaning, antitetanus and antirabies prophylaxis as needed, and trimming exposed cartilage edges. These edges may be sutured secondarily after 8 to 10 days to prevent infection. Reconstruction then proceeds in a delayed manner after 2 to 3 months, or 2 to 4 months after complete healing. Emergency replantation attempts often yield poor results, so the damaged area is usually tidied and left to heal before reconstruction. Most patients present months or years later. BAPRAS notes most ear-trauma injuries are caused by biting, and reconstruction uses the same methods as microtia repair.

Tetanus-prone wounds include contaminated wounds, wounds with dead tissue, wounds open more than six hours, or wounds deeper than one centimetre. A fully immunized patient with a tetanus-prone wound may need tetanus toxoid; a patient with unknown or inadequate immunization may need toxoid and, after fewer than two prior injections, immune globulin. For rabies exposure, management includes washing the wound with a virucidal agent, rabies immune globulin around the wound, and vaccine doses over twenty-eight days; patients with documented antibody titers may not need immune globulin. Rabies risk is extremely low in the United Kingdom but must be considered in other countries.

Because ear skin is tightly attached to cartilage, cuts often involve both layers, so repair starts with aligning the helix, anti-helix, and other landmarks, then closing skin; buried sutures may be placed in intact perichondrium, and everting stitches help prevent notching. Degloving may need a bolster. For near-total avulsion, surgeons irrigate, preserve anatomy, confirm perfusion, and restore arterial inflow if needed; venous drainage may need leeching or heparin pledgets. The avulsed segment should not be re-implanted in the emergency room. Larger defects are staged: costal cartilage framework first, then elevation about six months later. An acquired deformity is not reconstructed within six months of primary wound care.