Facial Trauma & Fractures | Function and longer-term outcome

Residual trismus after a mandibular fracture may be due to scarring in traumatized muscles or, rarely, ankylosis in intracapsular condylar fractures. Poorly reduced zygomatic arch fractures can also cause bony interference with the coronoid process. Condylar fractures are common mandibular fractures. In one cited study, dexamethasone reduced inflammation and helped prevent trismus or temporomandibular joint stiffness in condylar fractures. Heterotopic ossification can also form a bony bridge and cause trismus after reconstruction. The cause must be carefully ascertained and treated surgically or with exercises and physiotherapy. Patients vary in pain perception and recovery, so each case must be considered individually. Complete bone healing takes several months longer than clinical union.

Acute swelling and bruising can hide subtle asymmetry after facial trauma, so delayed reevaluation after swelling resolves is often needed to appreciate the true deformity. Examination may include inspection, palpation for step-offs or instability, occlusion assessment, cranial nerve and eye checks, and review of photographs or dental records. High-quality CT imaging is essential to identify and characterize fractures completely and plan treatment; CT information is of far greater net value than routine radiographs and clinical examination. Treatment may range from observation of barely displaced fractures to extensive reconstruction in severe fractures with displacement. The clinician is concerned with malocclusion, abnormal mobility and crepitation as signs of fracture.

Facial trauma evaluation should include cranial nerve assessment, and facial nerve status is especially important to record within the first 72 hours. Numbness or paresthesia is a recognized complication after facial fracture; nondisplaced fractures are associated with lower incidence and more favorable healing, while medial displacement of the zygoma can pinch the infraorbital nerve. The infraorbital nerve supplies feeling to the cheek, nose and upper lip. Imaging helps identify fracture position and nerve compression, and high-quality imaging is essential for treatment planning. In one reported case, persistent paresthesia for three weeks without improvement led to CT imaging and infraorbital nerve decompression. Treatment decisions remain individualized.

Facial trauma can damage teeth in several ways. Crown fractures with pulp exposure in mature teeth may require pulp removal and endodontic filling. Root fractures closer to the crown have a worse prognosis; apical-third fractures may be splinted, and root fractures with pulp exposure typically need endodontic therapy if the tooth can be salvaged. Crown-root fractures depend on how much root remains; some can be restored, while deep or longitudinal fractures may require extraction. Definitive treatment is often deferred to a dentist and may include root canal therapy, crown lengthening, repositioning, extrusion or restoration. Emergency stabilization and follow-up help determine whether definitive root canal therapy is necessary.

Malaligned bones often require variations of both osteotomy and onlay grafting to restore original shape and volume. In severe mandible and midface injuries, perfect bony reduction and facial symmetry may be compromised to achieve normal occlusion; later, displaced mandibular segments can create asymmetry, deformity or bony step-offs that warrant reconstruction. Postoperative occlusal issues may require orthodontic treatment. Skeletal augmentation may improve residual asymmetry or contour deformities after inadequate reduction or bone resorption, using sculpted porous polyethylene or patient-specific CAD-CAM implants. Imaging and clinical examination guide the final plan. Treatment is individualized after assessment. Dr. Vishal Purohit can explain procedure options, suitability, benefits and limitations during consultation. A proper assessment is needed before deciding treatment.

Orbital fracture treatment aims to restore skeletal support and orbital volume. These fractures are often associated with zygoma and midface fractures. Delayed repair may be needed to let associated eye injuries stabilize, but delayed secondary treatment of fractures with diplopia or enophthalmos gives considerably inferior results. An ophthalmology examination is generally warranted for orbital fractures, and entrapment of the inferior rectus requires emergent treatment. In children, delayed repair of entrapment can cause permanent visual deficit. Defect size, early enophthalmos and muscle entrapment are cited surgical indications, though indication remains controversial. Primary repair is preferred when indicated because delayed secondary treatment gives considerably inferior results; however, associated ocular injuries may need to stabilize first.

Children are not small adults: their facial bones have more elasticity and cartilage, fractures are often greenstick, and the growing skull can remodel. Therefore pediatric facial fractures are treated less often with open reduction and internal fixation and more often conservatively. When surgery is needed, surgeons must protect developing teeth and growth sites, consider effects of wide subperiosteal undermining, and avoid or remove implants that may restrict growth or migrate. Because growth patterns after facial fracture are unpredictable, long-term follow-up is essential. A younger child may need more exhaustive evaluation and a more conservative plan, while older children approach adult management.

High-energy facial injuries can develop soft-tissue scar and contracture from the time of injury; the soft tissue may become stiff, thicker, discolored and less pliable. Soft-tissue contracture and stiffness can follow the shape of displaced bone, and reduction incisions or dissection in the vulnerable period one to three weeks after injury can create a second soft-tissue injury. Where there is no significant bone or soft-tissue loss, fractures may be managed with open reduction and usual techniques, with soft-tissue closure. Where tissue is lost, initial soft-tissue reduction is followed by repeated wound checks, removal of blood clots and dead tissue, then closure by moving nearby skin or grafting; bone and soft-tissue gaps are rebuilt once no further dead tissue remains.

Postoperative trismus is often transient and resolves after proper reduction; when it persists, jaw physiotherapy may help regain preinjury mouth opening. A soft or semi-liquid diet is usual for a few weeks, and normal eating often returns in about four to six weeks for most foods. Minor bite changes are commonly overcome by normal chewing during early healing, though selective grinding of interfering cusps is sometimes needed. If teeth were lost or retained in the fracture line, dental monitoring and replacement planning may also matter. Nutrition should be maintained with small frequent meals, and oral hygiene remains important while jaws are immobilized. Each case is individualized by injury complexity and healing.