Avaliação do volume do conteúdo da cavidade orbitária e sua influência na permanência de complicações pós-traumáticas / Evaluation of the volume of the orbital cavity content and its influence on the permanence of post-traumatic complications

O objetivo deste estudo foi avaliar, por meio de tomografias computadorizadas, as alterações volumétricas pós-traumáticas, dos tecidos orbitários, no período préoperatório, pós-operatório imediato e após os primeiros 3 meses da cicatrização, correlacionando-as com a manutenção das complicações pós-traumáticas. Vinte e três pacientes com indicação cirúrgica para fraturas unilaterais de órbita foram avaliados clinicamente e por meio de tomografia computadorizada. A órbita oposta, não fraturada foi utilizada como controle. As complicações mais frequentes foram enoftalmo, diplopia e distopia. A alteração volumétrica tecidual nas órbitas fraturadas apresentou-se constante e com diferença estatística significante, com p< 0,0001. Não houve correlação estatística entre a diferença volumétrica do conteúdo orbitário nos 3 períodos e a manutenção das complicações pós-traumáticas, apresentando p= 0,1617. Semelhantemente, não houve correlação entre a área fraturada e a permanência das complicações. Conclui-se que o volume do conteúdo da cavidade orbitária não poderá ser utilizado como fator determinante para a permanência da complicação pós-traumática(AU)

The aim of this study was to evaluate through computed tomography, the posttraumatic volumetric alterations of the orbital tissues, in the preoperative period, immediate postoperative period, and after the first 3 months of healing, correlating them with the maintenance of the post-traumatic complications. Twenty-three patients with surgical indication for unilateral orbital fractures were evaluated clinically and by means of computed tomography. The opposite, unfractured orbit was used as a control. The most frequent complications were enophthalmos, diplopia and dystopia. The tissue volume change in the fractured orbits was constant and present statistically significant difference, with p< 0.0001. There was no statistical correlation between the volumetric difference of orbital content in the 3 periods and the maintenance of post-traumatic complications, with p= 0.1617. Similarly, there was no correlation between the fractured area and the permanence of complications. It is concluded that the volume of the orbital cavity content cannot be used as a determining factor for the permanence of the post-traumatic complication(AU)

Neumomediastino secundario a fractura aislada de piso de órbita / Pneumomediastinum secondary to isolated fracture of orbit floorx

Resumen Introducción: El neumomediastino se define como la presencia de aire o gas dentro de los planos fasciales del mediastino. Por lo general, es un fenómeno secundario a perforaciones traumáticas del tracto aerodigestivo. El neumomediastino secundario a una fractura orbitaria es un evento raro. Se asocia a complicaciones potencialmente mortales como el neumotórax, el neumopericardio y la mediastinitis. Objetivo: Describir un caso de neumomediastino secundario a una fractura aislada de piso orbitario y su manejo médico-quirúrgico. Caso clínico: Paciente de sexo femenino de 42 años que sufre traumatismo en regiones facial, cervical y torácica desarrollando secundariamente un enfisema subcutáneo panfacial y un neumomediastino, el cual se resuelve exitosamente. Discusión: El neumomediastino secundario a una fractura aislada de piso orbitario es un evento muy raro. El aire puede descender a lo largo de los espacios fasciales hasta el mediastino. En este sentido, sonarse la nariz es un factor de riesgo para desarrollar esta pa-tología. Conclusión: Ocurrido un trauma maxilofacial puede presentarse enfisemas de espacios profundos de la cabeza, cuello e incluso el mediastino.

Introduction: Pneumomediastinum is defined as the presence of air or gas within the fascial planes of the mediastinum. It is usually a phenomenon secondary to traumatic perforations of the aerodigestive tract. Pneumomediastinum secondary to an orbital fracture is a rare event. And it is related to life-threatening complications such as pneumothorax, pneumopericardium and mediastinitis. Aim: To describe a case of pneumomediastinum secondary to an isolated orbital floor fracture and its medical-surgical management. Clinical case: A 42-year-old female patient who suffers trauma to the facial, cervical and thoracic regions, secondary development of a subcutaneous panfacial emphysema and pneumomediastinum, which resolves successfully. Discussion: Pneumomediastinum following an isolated orbital floor fracture is a very rare event. The air can descend along the fascial spaces to the mediastinum. In this sense, blowing your nose is a risk factor to develop this pathology. Conclusion: After a maxillofacial trauma, emphysema of the deep spaces of the head, neck and even the mediastinum can occur

Inferior rectus muscle rupture due to orbital trauma / Ruptura de músculo reto inferior por trauma orbitário

ABSTRACT A 48-year-old patient with blunt periorbital trauma presented with vertical strabismus and diplopia secondary to inferior rectus muscle avulsion. After ophthalmologic and CT scan evaluation, early surgical treatment with anatomical restoration led to improvement in motility deficits with resolution of diplopia.

RESUMO Paciente de 48 anos com história de trauma periorbitário contuso apresentou estrabismo vertical e diplopia secundários à avulsão de músculo reto inferior. Após avaliação oftalmológica e tomográfica, o tratamento precoce cirúrgico das lesões com reparo anatômico permitiu melhora nos deficits de motilidade com resolução da diplopia.

La diplopía que bajó de un cocotero: trauma por coco / Diplopia falling from one coconut tree: trauma by coco

Se presenta el caso clínico de un paciente a quien la caída de un coco y el consecuente traumatismo sobre su cara. produjo una fractura del piso orbitario con atrapamiento muscular, diplopía no diagnosticada y confundida con un aneurisma cerebral. Se hacen consideraciones sobre este tipo de accidentes en playas arenosas donde abundan cocoteros. La comparación de su frecuencia con ataques de tiburón y acerca de cómo un artículo médico puede ser tergiversado por el autor y convertido en noticia de prensa como para obtener el Ig Premio Nobel de Medicina con base a "una investigación que no puede o no debe ser duplicada" logros que primero hacen reir y después pensar e intertan celebrar lo inusual, imaginativo y espolear el interés por la ciencia, la medicina y la tecnología

We present the clinical case of a patient who, after being hit the face by a falling coconut, with consequent trauma to his face, fractured his orbital floor with muscle entrapment and undiagnosed diplopia which was mistaken for a brain aneurysm. We make considerations about such accidents on sandy beaches where coconut trees abound, compare its frequency with shark attacks and discuss how a medical article can be misrepresented by its autor and become news in order to obtain the nomination for the Ig Nobel Prize for medicine based on "research that cannot or should not be duplicated; achievements that first make you laugh and then make you and try to celebrate the unusual, imaginative and spur interest in science, medicine and technology

Management of diplopia in patients with blowout fractures.

Purpose: To report the management outcomes of diplopia in patients with blowout fracture. Materials and Methods: Data for 39 patients with diplopia due to orbital blowout fracture were analyzed retrospectively. The inferior wall alone was involved in 22 (56.4%) patients, medial wall alone was involved in 14 (35.8%) patients, and the medial and inferior walls were involved in three (7.6%) patients. Each fracture was reconstructed with a Medpore® implant. Strabismus surgery or prism correction was performed in required patients for the management of persistent diplopia. Mean postoperative follow up was 6.5 months. Results: Twenty-three (58.9%) patients with diplopia underwent surgical repair of blowout fracture. Diplopia was eliminated in 17 (73.9%) patients following orbital wall surgery. Of the 23 patients, three (7.6%) patients required prism glasses and another three (7.6%) patients required strabismus surgery for persistent diplopia. In four (10.2%) patients, strabismus surgery was performed without fracture repair. Twelve patients (30.7%) with negative forced duction test results were followed up without surgery. Conclusions: In our study, diplopia resolved in 30.7% of patients without surgery and 69.2% of patients with diplopia required surgical intervention. Primary gaze diplopia was eliminated in 73.9% of patients through orbital wall repair. The most frequently employed secondary surgery was adjustable inferior rectus recession and <17.8% of patients required additional strabismus surgery.

Blow-in fracture of the orbital roof presenting as a case of non-resolving choroidal effusion.

A 34-year-old male patient was referred to us as a case of non-resolving suprachoroidal hemorrhage. History revealed decrease in right eye vision following trauma to forehead. B scan ultrasonography (USG) of the right eye showed a high-reflective structure indenting the globe. It turned out to be an inferiorly displaced fracture fragment from the orbital roof on computerized tomography (CT) scan. The choroidal elevation disappeared after open reduction of the fracture fragment and patient had good recovery of vision. USG and CT scan were helpful in the diagnosis and management of this case.

Traumatic orbital fracture with intact ocular globe displacement into the maxillary sinus / Fratura traumática de órbita com deslocamento de globo ocular intacto para o seio maxilar

The authors report one case of orbital fracture of the floor and the medial walls after trauma with an intact ocular globe displacement into the maxillary sinus. The same authors emphasize the treatment, complications and the rarity of this case. In this case the patient developed a good visual acuity and a loss of ocular motility as complication (except abduction) .

Os autores relatam um caso de fratura de assoalho e parede medial de órbita após trauma com deslocamento de globo ocular intacto para o seio maxilar. Os mesmos autores enfatizam o tratamento, complicações e a raridade da entidade. Neste caso o paciente desenvolveu uma boa acuidade visual e uma perda de motilidade ocular como complicação (exceto abdução).

Orbital Fracture: significance of lateral wall

The lateral orbital wall is the strongest among other orbital walls. However, it is commonly fractured in the setting of severe facial trauma. The fracture usually occurs at the sphenozy-gomatic suture line. In general, patients with lateral wall fractures are commonly young male who may present with mid facial swelling and some degree of deformity. In some cases, lateral orbital wall fracture may be associated with visual loss or change in mental status due to associated intra-cranial injury. Imaging studies with computed tomography is important in the proper diagnosis and planning of the surgical intervention. Management of intracranial or eye injuries should be undertaken on emergent basis. Thereafter, significantly displaced lateral wall fractures need to be repaired on timely basis. Proper realignment of the plane of the lateral orbital wall at the sphenozygomatic suture along with the other complex articulations of the zygomatic bone is necessary for proper functional and aesthetic outcome

Indirect orbital floor fractures: a meta-analysis

Orbit fractures are common in the context of orbital trauma. Fractures of the orbital flloor without orbital rim involvement are known as indirect orbital floor fractures, pure internal floor fractures, and orbital blowout fractures. In this paper, we have reported a meta-analysis of orbital floor fractures focusing on indications and timing of surgical repair, outcomes, and complications

Avaliação da abordagem palpebral subtarsal no tratamento cirúrgico das fraturas zigomático-orbitais / Evaluation of palpebral subtarsal approach in surgical treatment of orbito-zigomatic fractures

OBJETIVO: avaliar as complicações, vantagens e desvantagens da abordagem subtarsal quando utilizada para exposição da borda infra-orbital e do assoalho da órbita em fraturas zigomático-orbitais. MÉTODOS: Estudo retrospectivo de 41 incisões subtarsais empregadas em 39 pacientes com fraturas do complexo zigomático e/ou do assoalho da órbita do tipo blow-out, no período de janeiro de 2002 a dezembro de 2006. RESULTADOS: As complicações observadas foram conjuntivite, epífora e cicatriz aparente em seis (14,6 por cento), cinco (12,2 por cento) e dois (4,9 por cento) dos casos, respectivamente. Não houve presença de ectrópio, entrópio ou esclera aparente nos pacientes reavaliados. CONCLUSÃO: As principais vantagens dessa abordagem são os resultados estéticos e funcionais associados aos benefícios trans-operatórios.

OBJECTIVE: To evaluate the complications, advantages and disadvantages of the subtarsal approach when used to exposure the orbital rim and orbital floor in orbitozygomatic fractures. METHODS: Retrospective study of the 41 subtarsal incisions that were used in 39 patients with fractures of the zygomatic complex and/or orbital floor, of blowout type, between January 2002 and December 2006. RESULTS: The observed complications were conjunctivitis, epiphora and noticeable scar, in six (14,6 percent), five (12,2 percent) and two (4.9 percent) of the cases, respectively. There was no ectropion, entropion or scleral show in the patients reevaluated. CONCLUSIONS: The main advantages of this approach are the esthetic result together with the transoperative benefits.

Clinico-Radiologic Findings of Entrapped Inferior Oblique Muscle in a Fracture of the Orbital Floor

A 51-year old man presented with vertical and torsional diplopia after reduction of a blowout fracture at another hospital one year ago. He had no anormalies of head position and 14 prism diopters (PD) right hypertropia (RHT) in the primary position. In upgaze no vertical deviation was found, and hyperdeviation on downgaze was 35PD. Bielschowsky head tilt test showed a negative response. Distinct superior oblique (SO) and inferior rectus (IR) underaction of the right eye was noted but IO overaction was mild on the ocular version test. Double Maddox rod test (DMRT) revealed 10-degree extorsion, but fundus extorsion was minimal in the right eye.Thin-section coronal CT scan showed that there was no fracture line on the anterior orbital floor, but a fracture remained on the posterior orbital floor. Also, the anterior part of the right inferior oblique muscle was vertically reoriented and the medial portion of the inferior oblique muscle was not traced on the coronal CT scan. The patient underwent 14 mm right IO recession and 3 mm right IR resection. One month after the surgery, his vertical and torsional diplopia were eliminated in the primary position.

A Case of Pseudo-Duane's Retraction Syndrome With Old Medial Orbital Wall Fracture

We report a case of pseudo-Duane's retraction syndrome with entrapment of the medial rectus muscle in an old medial orbital wall fracture presenting identical clinical symptoms as Duane's retraction syndrome. A 15-year-old boy presented with persistent limited right eye movement since a young age. Examination showed marked limited abduction, mildly limited adduction, and globe retraction accompanied by narrowing of the palpebral fissure during attempted adduction in the right eye. He showed a right esotropia of 16 prism diopters and his head turned slightly to the right. A slight enophthalmos was noted in his right eye. A computed tomography scan demonstrated entrapment of the medial rectus muscle and surrounding tissues in an old medial orbital wall fracture. A forced duction test revealed a marked restriction of abduction in the right eye. A 5 mm recession of the right medial rectus muscle was performed. Postoperatively, the patient's head turn and esotropia in the primary position were successfully corrected, but there was still some limitations to his ocular movement. The importance of several tests such as the forced duction test and an imaging study should be emphasized in making a diagnosis for limitation of eye movement.

Upper Eyelid Retraction After Periorbital Trauma

We report four unusual cases of upper eyelid retraction following periorbital trauma. Four previously healthy patients were evaluated for unilateral upper eyelid retraction following periorbital trauma. A 31-year-old man (Case 1) and a 24-year-old man (Case 2) presented with left upper eyelid retraction which developed after blow-out fractures, a 44-year-old woman (Case 3) presented with left upper eyelid retraction secondary to a periorbital contusion that occurred one week prior, and a 56-year-old man (Case 4) presented with left upper eyelid retraction that developed 1 month after a lower canalicular laceration was sustained during a traffic accident. The authors performed a thyroid function test and orbital computed tomography (CT) in all cases. Thyroid function was normal in all patients, CT showed an adhesion of the superior rectus muscle and superior oblique muscle in the first case and diffuse thickening of the superior rectus muscle and levator complex in the third case. CT showed no specific findings in the second or fourth cases. Upper eyelid retraction due to superior complex adhesion can be considered one of the complications of periorbital trauma.

Ocular Motility Disturbances in Orbital Wall Fracture Patients

It is difficult to identify the exact cause of ocular motility disturbances in orbital wall fracture patients. By performing CT and ocular motility tests before and after surgery, this study analyzes the functions of the extraocular muscles and determines correlations between the results. Between February 2001 and January 2003, 45 eyes of 45 patients with orbital wall fractures, whose medical records could be traced back at least 6 months, underwent surgical repair in our hospital. All variables were analyzed using the independent t-test, paired t-test, and Chi-square test. There was no significant difference in the location and degree of fracture and the incarceration pattern of 6 patients who had moderate or severe diplopia, and of the remaining patients 6 months after surgery. However, in the case of diplopia, the sum of ocular motility limitation was 5.67 +/- 4.18, and the degree of extraocular motility disturbance was 3.67 +/- 2.42 before surgery. When there was no diplopia, the sum of ocular motility limitation was 1.13 +/- 1.38, and the degree of extraocular motility disturbance was 1.08 +/- 1.16 (p < 0.005, independent t-test). Ocular movement was successfully recovered by surgical reduction within 3 weeks from trauma. Postoperative ocular motility disturbance was more related to various ocular motility test results than CT findings. Ocular motility disturbances can remain after surgery if ocular motility limitation and extraocular motility disturbance are significant after trauma. Additional studies on the various tests to examine functions of extraocular muscles are required to identify and analyze the exact cause of ocular motility disturbance.

Frequency of severe visual disturbance associated with midfacial fractures

Visual loss after traumatic injuries of the maxillofacial area is one of the worst complications of these injuries and if remains untreated will affect seriously the future life of patient. The aim of this study was to evaluate the frequency of blindness associated with midfacial fractures in Kerman Bahonar Hospital from 1996-2002. This descriptive study was done retrospectively on 207 patients with midface maxillofacial trauma admitted to Kerman Bahonar Hospital from 1996 to 2002. The frequency of unilateral blindness associated with midfacial trauma was 5.3 percent. The main etiologic factor was motor vehicle accidents [81.8%] and the most common area of fracture site of midface associated with blindness was Lefort III, Lefort II and NOE [Naso- Orbito- Ethmoidal] fractures. The evaluated frequency of blindness after midfacial injuries in this study was similar to previous studies. The etiologic factors were different from those of developed countries and similar to developing ones

Fratura de órbita: classificação e tratamento / Orbital and Zygoma fractures: classification assessment and treatment

Foram avaliados clinicamente, 111 paciente de acordo com os métodos de fixação de fraturas orbitárias. Técnicas de fixação rígida, semi-rígidas e com fio de Kirschnner foram avaliadas. Um tratamento baseado na classificação dessas fraturas foi apresentado. Parâmetros clínicos, como anormalidades na posição do globo ocular (distopia e enoftalmia), projeção do malar e teste de sensibilidade foram avaliados. O presente estudo confirma que podemos usar material de baixo custo com bons resultados.

We evaluated 111 pacientes to assess clinically the results of fixation methods on orbital and zygoma fractures. Rigid plate fixation, wire techniques and fixation with Kirschnner were used. A treatment guidline based on classification of orbital fractures is presented. The major clinical parameters assessed were globe position abnormalities (enophthalmus and dystopia), malar projection and cheek sensation. The present study confirms that we can use low-cost material with good results.

Diplopia in facial fractures.

A prospective study was made on facial fracture patients who received treatment in Siriraj Hospital from 1 Jan 1997 to 31 Dec 1998. We recorded the types of fractures which involved the orbit, diplopia, operations and results. From the 675 facial fracture patients in this period, there were 256 cases that involved the orbit. Diplopia was found in 17 cases; Orbital floor fracture 8, Zygomatic fracture 4, Le Fort fracture 4, and Medial aspect fracture of maxilla 1. Ten cases were recent fractures and seven cases were old fractures. The floor of the orbits were explored in all cases and repaired with silastic sheath, except 2 severe enophthalmos cases whose medial wall and the floor of the orbits were repaired with titanium mesh. Diplopia disappeared after operation in 14 cases. Three cases still had minimal diplopia in the upward-gaze position and all of them were old fracture cases. The authors concluded that diplopia was found in 6.64 per cent of orbital fractures. Fracture of the floor of the orbit was the most common cause. An early operation will give a better result than late repair.

Correction of severe enophthalmos with titanium mesh.

The aim of this study was to analyse the types of facial fractures that caused severe enophthalmos and the outcome after repair of the medial wall and the floor of the orbit with titanium mesh. Eighteen cases with severe enophthalmos were repaired with titanium mesh in Siriraj Hospital between January 1992 and December 1999. We recorded the types of facial fractures of the patients, the results after operations and the complications. All cases were followed-up for at least 6 months. Le Fort fracture was the most common cause of severe enophthalmos from orbital fracture. The results after operations were satisfactory in 17 cases. Only one case still had enophthalmos after the first correction with titanium mesh and needed further repair with bone graft. Few complications happened post-operatively. They were 4 cases of chemosis and 4 cases of temporary diplopia. All subsided spontaneously. The author concludes that titanium mesh can be used to repair the medial wall and the floor of the orbit with good results.

Nuestra conducta frente a las fracturas órbito-cigomáticas / Our management in orbitocygomatic fractures

Objetivo: Analizar en forma retrospectiva la táctica, los resultados y las secuelas del tratamiento de las fracturas órbito-cigomáticas con osteosíntesis rígida. Población: Se analizaron 53 pacientes tratados con osteosíntesis rígida por traumatismos del complejo órbito-cigomático. 41 pacientes pertenecían al sexo masculino y la edad media fue de 37,4 años. La causa etiológica en el 64,2 por ciento fue el accidental vial y en el 32,5 por ciento se asoció con traumatismos de otra zona. Método: La cirugía se llevó a cabo dentro de los 7 días en el 77,3 por ciento, el resto se difirió por complicaciones de otros órganos. La técnica utilizada fue exponer los trazos de faractura con el triple abordaje cola de ceja, subciliar y vestibular superior y reducido el malar se realizó osteosíntesis con placas de titanio en tres puntos: frontomalar, reborde malar inferior y cigomático maxilar. Resultados: No se registró mortalidad. Las complicaciones propias de la cirugía se presentaron en tres pacientes -5,7 por ciento- y en otros tres, complicaciones por las placas utilizadas, requiriendo la exéresis. El resultado funcional y cosmético fue satisfactorio. En el 11,3 por ciento se presentaron secuelas: 3 hipoestesia del nervio infraorbitario, 2 ectropión y 1 enoftalmo. Conclusión: Las fracturas órbito-cigomáticas con desplazamientos son quirúrgicas. La cirugía debe realizarse precozmente sobre todo si presenta patología ocular. Se deben exponer todos los trazos fracturarios, reducción de los mismos y osteosíntesis rígida en tres puntos