Uso del polietileno poroso de alta densidad como alternativa en reconstrucción de fracturas orbitarias. Serie de 22 casos / Use of high-density porous polyethylene as an alternative in orbital fracture reconstruction. 22 Case series

Introducción: las fracturas de pared de órbita pueden producir secuelas funcionales y estéticas. La indicación de reconstrucción quirúrgica, es indispensable para la recuperación de la motilidad y estética ocular. Los materiales reconstructivos más utilizados son los aloplásticos, como el titanio y el polietileno poroso de alta densidad (PPAD), el cual ha resultado exitoso en reconstrucción maxilofacial. El propósito de este estudio retrospectivo, es exponer los resultados tras el uso del PPAD en reconstrucciones orbitarias y sus posibles complicaciones. Materiales y métodos: se realizó una revisión retrospectiva de 22 pacientes donde se utilizó PPAD como material de reconstrucción en fracturas orbitarias. Se consideró para la indicación quirúrgica que el paciente presentara alguno de los siguientes signos: diplopía o síntomas vasovagales por atrapamiento muscular, restricciones en la motilidad ocular, enoftalmo mayor a 4mm. El material utilizado fue PPAD (Medpor Stryker®) puro en 17 casos y PPAD reforzado con una malla de titanio en el interior de su estructura (Medpor Titan Stryker®), en los 5 restantes. Resultados: se registraron 3 casos con complicaciones; ectropión, diplopía y ectropión con diplopía, los cuales todos fueron reversibles. No se registraron casos de infección ni complicaciones oftalmológicas postoperatoria. Discusión: los injertos autólogos fueron los primeros utilizados con resultados de compatibilidad y resistencia óptimos. El uso de PPAD como material de reconstrucción ha sido bien documentado con buenos resultados en términos de una baja incidencia de infección y óptima motilidad ocular a largo plazo.

Introduction: Orbital wall fractures can cause functional and aesthetic sequelae. When there is an indication for surgical reconstruction, this is essential for the recovery of ocular motility and aesthetics. The most commonly used reconstructive materials are alloplastics, such as titanium and porous high-density polyethylene (PPAD), which have been successful in maxillofacial reconstruction. The purpose of this retrospective study is to present the results and their possible complications in orbital reconstruction with PPAD. Materials and methods: a retrospective review of 22 patients in whom PPAD was used as reconstruction material for orbital fractures was performed. It was considered for the surgical indication that the patient presented any of the following signs: diplopia or vasovagal symptoms due to muscle entrapment, ocular motility restrictions, enophthalmos greater than 4mm. The material used was pure PPAD (Medpor Stryker®) in 17 cases, and PPAD reinforced with a titanium mesh inside its structure (Medpor Titan Stryker®), in the remaining 5. Results: 3 patients with complications were registered; ectropion, diplopia, and ectropion with diplopia, all of which were reversible. There were no cases of postoperative infection or ophthalmological complications. Discussion: Autologous grafts were the first used with optimal compatibility and resistance results. The use of PPAD as a reconstruction material has been well documented with good results in terms of a low incidence of infection and optimal long-term ocular motility

Clinical outcome after orbital floor fracture reduction with special regard to patient's satisfaction / 中华创伤杂志(英文版)

PURPOSE@#Primary reconstruction via transconjunctival approach is a standardized treatment option for orbital floor fractures. The aim of this study was to compare the findings of specific ophthalmologic assessment with the patient's complaints after fracture reduction.@*METHODS@#A retrospective medical chart analysis was performed on patients who had undergone transconjunctival orbital floor fracture reduction for fracture therapy with resorbable foil (ethisorb sheet or polydioxanone foil). A follow-up assessment including ophthalmological evaluation regarding visual acuity (eye chart projector), binocular visual field screening (Bagolini striated glasses test) and diplopia (cover test, Hess screen test) was conducted. Additionally, a questionnaire was performed to assess patients' satisfaction.@*RESULTS@#A total of 53 patients with a mean follow-up of 23 months (ranging from 11 to 72) after surgical therapy were included. Diplopia was present preoperatively in 23 (43.4%) and reduced in follow-up examination (n = 12, 22.6%). Limitations in ocular motility reduced from 37.7% to 7.5%. The questionnaire about the patient's satisfaction revealed excellent outcomes in relation to the functional and esthetical parameters.@*CONCLUSION@#Transconjunctival approach is a safe approach for orbital fracture therapy. Postoperative diplopia is nearly never perceptible for the individual and differs to pathologic findings in the ophthalmic assessment.

Orbital Floor Fracture

The medial wall and floor of the bony orbit are frequently fractured because of the delicate anatomy. To optimize functional and aesthetic results, reconstructive surgeons should understand the anatomy and pathophysiology of orbital fractures. Appropriate treatment involves optimal timing of intervention, proper indications for operative repair, incision and dissection, release of herniated tissue, implant material and placement, and wound closure. The following review will discuss the management of orbital floor fractures, with the operative method preferred by the author. Special considerations in operation technique and the complication are also present in this article.

Barotraumatic Subcutaneous Orbital Emphysema after Nose Blowing: Case Report.

Orbital subcutaneous emphysema is defined as the abnormal presence of air within the periorbital soft tissue. It occurs generally as a result of blunt or penetrating facial trauma. Spontaneous barotraumatic emphysema is a very rare entity that generally results due to a sudden increase in the intraorbital pressure. If there is not an obvious visual acuity loss even with high ocular pressure, it is generally managed conservatively. However prolonged elevation of intraorbital pressure may cause an irreversible, ischemic visual loss secondary to an ischemic optic neuropathy or an acute central retinal artery occlusion. Emergency decompression may be required. Here we are presenting a patient with barotraumatic orbital subcutaneous emphysema, occurring after forceful nose blowing who was managed conservatively without any complications.

Effectiveness of Computed Tomography for Blow-out Fracture / 대한악안면성형재건외과학회지

PURPOSE: This study assessed the association between eye symptoms (enophthalmos or diplopia) and site of damage, volume, deviated inferior rectus muscle (IRM) and type of fracture with computed tomography (CT). The intent is to anticipate the prognosis of orbital trauma at initial diagnosis. METHODS: Forty-five patients were diagnosed with fractures of the inferior wall of one orbit. Fracture area, volume of displaced tissue, deviated IRM, and type of fracture were evaluated from coronal CT by one investigator. The association of those variables with the occurrence of eye symptoms (diplopia and enophthalmos) was assessed. RESULTS: Of 45 patients, 27 were symptom-free (Group A) and 18 had symptoms (Group B) of enophthalmos and/or diplopia. In Group B, 12 had diplopia, one was enophthalmos, and five had both. By CT measurement, group A mean area was 192.6 mm2 and the mean volume was 673.2 mm3. Group B area was 316.2 mm2 and volume was 1,710.6 mm3. The volume was more influential on symptom occurrence. Each patient was categorized into four grades depending on the location of IRM. Symptom occurrence and higher grade were associated. Twenty-six patients had trap-door fracture (one side, attached to the fracture), and 19 had punched-out fracture (both sides detached). The punched-out fracture was more strongly associated with symptoms and had statistically significantly higher area and volume. CONCLUSION: In orbital trauma, measurement of fracture area and volume, evaluation of the deviated IRM and classification of the fracture type by coronal CT can effectively predict prognosis and surgical indication.

Antero- and postero-decompression through posterior approach to treat thoracolumbar burst fractures / 中华创伤骨科杂志

Objective To discuss the operative efficacy of anterior- and postero-decompression plus pedicle screw instrumentation through posterior approach in the treatment of thoracolumbar burst fractures. MethodsFrom February 2006 to November 2009,28 patients with thoracolumbar burst fracture and spinal cord injury were treated with anterior-and postero-decompression plus pedicle screw instrumenattion through posterior approach.They were 19 men and 9 women,21 to 52 years of age (average,35.6 years).The fractures happened at T11 in 3 cases,at T12 in 11 cases,at L1 in 9 cases and at L2 in 5 cases.By AO classification,there were 16 cases of type A3,7 cases of type B and 5 cases of type C.By the ASIA(American Spinal Injury Association) system,6 cases were rated as grade A,12 cases as grade B and 10 cases as grade C. Bone grafting was performed according to different conditions of the patients.Results The patients were followed for 12 months to 24 months,with an average of 14 months.The X-ray examinations showed that the mean anterior border height of the injured vertebrae recovered from46.8％ ± 18.3％ of the normal height before operation to 90.3％ ± 14.2％ postoperatively; the mean posterior border height recovered from preoperative 80.4％ ± 12.4％ to postoperative 94.2％ ± 15.1％ ; and the mean cobb angle decreased from preoperative 20.1°± 11.5° to postoperative 2.7°± 2.4°. The differences between preoperation and postoperation were significant(P ＜ 0.05).According to the ASIA evaluation system,neurofunctional recovery was achieved in the cases of incomplete paralysis except in the 6 eases who had had complete spinal cord injury of Grade A. Conclusion Anterior- and posterro-decompression plus pediclescrew instrumentation through posterior approach is an effective method of treating thoracolumbar burst fractures.

O acesso subciliar como opção para o tratamento de fratura do complexo zigomático-orbitário: relato de caso / The subciliary approach as an option for the treatment of zigomatic-orbital complex fractures: case report

A escolha do tipo de acesso para exploração do complexo zigomático-orbitário depende da localização e tipo de fratura, da experiência do cirurgião e do sucesso dos resultados obtidos. São vários os tipos de acesso para essa região, dentre eles, podem ser citados o acesso subciliar, o subtarsal e o transconjuntival. O acesso subciliar além de promover uma excelente exposição do rebordo infra-orbitário, da parede lateral da órbita e do assoalho orbital, mostra um resultado estético aceitável com cicatriz imperceptível. No entanto, alguns problemas estão relacionados a esta abordagem como o aumento da exposição da esclera e o ectrópio. O propósito deste trabalho é apresentar um caso clínico e discutir seu protocolo de tratamento, bem como suas vantagens e desvantagens e as possíveis complicações.

The type of access for treatment of the zygomatic-orbital complex fractures depends on the fracture type and localization, the surgeon's experience and the good outcomes obtained. There are several types of approach to this place, like the subciliary, the subtarsal and transconjunctival approach. The subciliary approach in addition to promoting an excellent exposure of the infra-orbital rim, the side wall of the orbit and the orbital floor it can end with an acceptable aesthetic result and imperceptible scar. However, some problems are related to this approach as increasing the exposure of the sclera and ectropion. The purpose of this paper is to present a clinical case and discuss the protocol of treatment and their advantages and disadvantages and possible complications.

Orbital Wall Reconstruction by Copying a Template(defect model) from the Facial CT in Blow-out Fracture

PURPOSE: Recently, orbital wall fracture is common injuries in the face. Facial CT is essential for the accurate diagnosis and appropriate treatment to reconstruct of the orbital wall. The objective of this study was to report the method for accurate measurement of area and shape of the bony defect in the blow-out fractures using facial CT in prior to surgery. METHODS: The authors experienced 46 cases of orbital wall fractures and examined for diplopia, sensory disturbance in the area of distribution of the infraorbital nerve, and enophthalmos in the preoperation and followed 1 months after surgery, from August 2007 to May 2008. Bony defect was predicted by measuring continuous defect size from 3mm interval facial CT. Copying from the defect model(template), we reconstructed orbital wall with resorbable sheet(Inion CPS(R), Inion Oy, Tampere, Finland). RESULTS: One months after surgery using this method, 26(100%) of the 26 patients improved in the diplopia and sensory disturbance in the area of distribution of the infraorbital nerve. Also 8(72.7%) of the 11 patients had enophthalmos took favorable turn. CONCLUSION: This accurate and time-saving method is practicable for determining the location, shape and size of the bony defect. Using this method, we can reconstruc

Orbital Wall Reconstruction by Copying a Template(defect model) from the Facial CT in Blow-out Fracture

PURPOSE: Recently, orbital wall fracture is common injuries in the face. Facial CT is essential for the accurate diagnosis and appropriate treatment to reconstruct of the orbital wall. The objective of this study was to report the method for accurate measurement of area and shape of the bony defect in the blow-out fractures using facial CT in prior to surgery. METHODS: The authors experienced 46 cases of orbital wall fractures and examined for diplopia, sensory disturbance in the area of distribution of the infraorbital nerve, and enophthalmos in the preoperation and followed 1 months after surgery, from August 2007 to May 2008. Bony defect was predicted by measuring continuous defect size from 3mm interval facial CT. Copying from the defect model(template), we reconstructed orbital wall with resorbable sheet(Inion CPS(R), Inion Oy, Tampere, Finland). RESULTS: One months after surgery using this method, 26(100%) of the 26 patients improved in the diplopia and sensory disturbance in the area of distribution of the infraorbital nerve. Also 8(72.7%) of the 11 patients had enophthalmos took favorable turn. CONCLUSION: This accurate and time-saving method is practicable for determining the location, shape and size of the bony defect. Using this method, we can reconstruc

Thirty-two cases of blow-out fracture with orbital floor repaired by auto-cranial pedicle flap / 眼科

2cm~2.Conclusions The auto-cranial pedicle flap via endonasal repairing blow-out fractures of or- bital inferior wails is an effective technique.The results are good for improving eye movement especially for fracture ranged≤2cm~2. (Ophthalmol CHN,2007,16:388-390)