Résumé
Objective To investigate the relationship between lesion size of solitary bone cyst ( SBC) and pathological fracture of calcaneus, so as to provide references for the treatment of SBC. Methods The three dimensional (3D) finite element model of foot and ankle was established based on CT images. Four models with gradient spherical bone defects were constructed in the focal area to simulate different SBC lesion sizes, and the biomechanical characteristics of calcaneus in different gait phases were analyzed. Results With the increasement of SBC size, the kinematics of calcaneus did not change significantly, but the peak stress of calcaneus increased gradually. When the SBC size exceeded 75% of the calcaneal width, the stress in calcaneal sulcus and cortical bone below SBC increased by 1. 48 times and 7. 74 times, respectively. Conclusions The risk of pathological fracture increases when the SBC diameter exceeds 75% of the calcaneal width, and early surgical intervention should be recommended. The calcaneal sulcus and the cortex bone below SBC are stress concentration regions and can be used as important areas to evaluate pathological fractures.
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Objetivo: apresentar um caso clínico de paciente com cisto ósseo solitário em mandíbula e sua evolução após o tratamento de exploração e curetagem cirúrgica por meio de achados radiográficos. Caso clínico: paciente do sexo masculino, 45 anos, compareceu à clínica da Faculdade de Estudos Administrativos Fead. Ao exame clínico, os tecidos se apresentavam dentro dos padrões de normalidade e ao exame radiográfico observou-se área radiolúcida unilocular, limites regulares e bem definidos em região anterior de mandíbula entre ápices dos dentes 33, 32, 31, 41 e 42, sem deslocamento desses. Para confirmação do diagnóstico, além do exame clínico, foi necessário realizar a tomografia de feixe cônico e exploração cirúrgica. Após a exploração cirúrgica foi realizada a curetagem das paredes ósseas e a proservação do caso para acompanhar a sua evolução. Considerações finais: por ser uma lesão de comportamento não agressivo, responde bem a este tipo de tratamento, sendo notável sua melhora durante o período de acompanhamento.(AU)
Objective: To present a clinical case report of a patient with solitary bone cyst of the mandible and its evolution after exploration and surgical curettage treatment through radiographic findings. Case report: A 45-year-old male patient attended the clinic of the School of Administrative Studies - FEAD. The clinical examination showed normal tissues and the radiographic examination showed unilocular radiolucent area and regular and well-defined boundaries in the anterior mandible between the apexes of teeth 33, 32, 31, 41, and 42, without displacement. To confirm the diagnosis, in addition to the clinical examination, cone beam tomography and surgical exploration were required. After the surgical exploration, bone wall curettage and case proservation were performed to monitor the evolution. Final considerations: Considering it is a non-aggressive lesion, it responds well to this type of treatment, with considerable improvement during follow-up.(AU)
Sujets)
Humains , Mâle , Adulte d'âge moyen , Kystes de la mâchoire/chirurgie , Kystes de la mâchoire/imagerie diagnostique , Maladies mandibulaires/chirurgie , Maladies mandibulaires/imagerie diagnostique , Radiographie panoramique , Résultat thérapeutiqueRésumé
Resumen El quiste óseo solitario es una lesión benigna cuyo origen sigue siendo hasta hoy desconocido, siendo el traumatismo la principal teoría de su origen, atribuido a un sangrado intraóseo, el cual no permite la reparación ósea, lo que conlleva a la formación de una cavidad quística con contenido serohemático sin revestimiento epitelial siendo la mandíbula la más afectada en la mayoría de los casos; se presenta en pacientes entre 20 y 30 años, con prevalencia por género masculino, asintomática, de crecimiento lento y desplazamiento de corticales, pudiendo producir fracturas patológicas mandibulares, su hallazgo es incidental durante el examen radiográfico, observándose como una imagen radiolúcida uni- o multilocular, con bordes definidos, sin zona esclerótica. Estudios complementarios de tomografía y resonancia magnética, han mostrado que estas cavidades no necesariamente están ocupadas por líquido, sino que puede haber gas o estar vacías. Se debe de hacer diagnóstico diferencial con quiste dentígero, ameloblastoma, tumor odontogénico queratinizante, tumor odontogénico epitelial calcificante, tumor odontogénico adenomatoide.
Abstract Solitary bone cyst is a benign lesion of unknown origin up to the present date. Its origin is mainly attribute to trauma theory, caused by intra-osseous bleeding which prevents bone repair, causing thus a cystic cavity with serous hematic content lacking epithelial lining. In most cases, the lower jaw is the most affected. It is observed in patients with ages ranging 20-30 years, generally male, it is an asymptomatic, slow-growing entity which progresses toward the cortical plates; it can cause pathological mandible fractures. Its discovery is usually incidental during a radiographic examination. It appears as a radiolucent, unilocular ormultilocular image, with well -defined borders, lacking sclerotic areas. Additional tomography and magnetic resonance studies have revealed that these cavities are not necessarily taken up by fluids: there can be presence of gas, or they could be empty. A differential diagnosis must be established to discard dentigerous cysts, ameloblastoma, keratinizing odontogenic tumor, calcifying epithelial tumor or adenomatoid odontogenic tumor.
Résumé
El quiste óseo solitario de la mandíbula es una cavidad intraósea sin recubrimiento epitelial, considerado un pseudoquiste, ha recibido diversas denominaciones debido a su etiología y patogenia inciertas como quiste óseo traumático, quiste óseo solitario y quiste óseo idiopático. Clínicamente suele ser una lesión asintomática, muestra bordes festoneados cuando está localizado entre las raíces dentales, es una cavidad vacía pero puede contener sangre, fluido seroso o serohemático y es descubierta en exámenes radiológicos de rutina. En este artículo se presenta un caso de quiste óseo solitario localizado en el cuerpo mandibular que acomete a un paciente femenino de 17 años de edad con tetralogía de Fallot, revelando aspectos clínicos, diagnósticos e imagenológicos y tratamiento.
Solitary bone cyst of the mandible is an intra-osseous cavity lacking epithelial lining considered a pseudocyst. Due to its uncertain etiology and pathogenesis, it has received several names such as traumatic bone cyst or idiopathic bone cyst. From a clinical perspective, it is oftentimes an asymptomatic lesion, with festooned borders when located between dental roots. It is an empty cavity but might contain blood, serous or serous-hematic fluid and can be perceived in routine X-ray examinations. The present article describes the case of a solitary bone cyst located in the body of the mandible of a 17-year old female patient. Afflicted with Fallot's tetralogy. Clinical, diagnostic and radiologic aspects as well as treatment are described.
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Background: The calcium phosphate system and in particular hydroxyapatite (CHA), has been the subject of intensive investigation. Although coralline hydroxyapatite is not inherently as strong as trabecular bone and does not exhibit plastic properties owing to the absence of a collagen matrix, with subsequent growth of native bone, it has been shown to become stronger but less stiff than autogenous graft material. Method: Thirty six cases of cystic lesions of long bones were curretted and filled with CHA blocks with or without autogenous cancellous bone chips between 2013 to 2014 with follow up duration ranging from 12 to 24 months. Filling by CHA blocks, mixing with autogenous bone grafts was done in osteoclastoma and fibrous dysplasia cases, while only CHA block filling was done in solitary bone cyst, aneurysmal bone cyst and fibroma cases. In all the cases, the diagnosis was made on the basis of clinical, radiological and histopathological examination. Both with and without pathological fractures cystic lesions were taken. Results: In the present study, 11 cases had pathological fracture. In our series, maximum cases were of osteoclastoma. Most of the cases were associated with pathological fracture. The pathological fractures united from 20-30 weeks time, Radiologically, the density of CHA blocks increased with the lapse of time. In our series, the longest follow up period was about 24 months and the shortest was of 12 months duration. 20 patients had excellent results with full functional, anatomical restoration without any pain and radiograph shows no recurrence, with healing of pathological fracture. While 2 patients had poor results they were not able to do activities of daily living, had pain and delayed healing. Conclusion: The CHA has favourable clinical result because of less adverse effects, biocompatibility to the tissue of the body, ease of manufacture, production and shape adjustment. Therefore, it is strongly suggested as a useful bone substitute.In our limited experience with coralline hydroxyapatite bone graft substitutes, we have encountered no significant complications related to implant themselves.
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El quiste óseo solitario es una lesión seudotumoral que se presenta predominantemente en la metáfisis de huesos largos de niños y adolescentes. El tratamiento actual estándar es el injerto óseo autólogo, sin embargo, sus tasas de no unión, morbilidad en el sitio de toma del injerto y la limitada cantidad con que se cuenta, así como, la no presencia de un banco de tejidos, fomentan el surgimiento de diferentes alternativas al mismo. Se presentaron dos pacientes en los cuales se utilizó la hidroxiapatita HAP-200 como sostén en la resección de seudotumores óseos benignos, teniendo en cuenta la curación ósea y la reincorporación rápida a la vida social. Se le realizaron exámenes clínicos, radiográficos y posteriormente histopatológicos que permitieron confirmar el diagnóstico, para luego realizar curetaje quirúrgico o exéresis de la lesión y relleno de la cavidad con hidroxiapatita. En todos los casos en los que se realizó este tipo de tratamiento tuvo efectividad máxima la terapéutica utilizada como alternativa de injerto óseo con una respuesta hueso-implantación u osteointegración. Los pacientes tuvieron una excelente resolución ósea, lo que confirmó la alta biocompatibilidad y poder osteoconductor de la hidroxiapatita porosa coralina HAP-200.
The solitary bone cyst is a tumor lesion that occurs predominantly in the metaphyses of long bones in children and adolescents. The current standard treatment is autologous bone graft, however, their rates of nonunion, morbidity site takes the graft and the limited amount that is counted and the non-presence of a tissue bank, encourage emergence of alternatives. Two patients, in whom hydroxyapatite HAP-200 was used as a support in the resection of benign bone pseudotumors, considering bone healing and rapid return to social life were presented. Clinical, radiographic and histopathological examinations were performed subsequently that allowed to confirm the diagnosis, and then make surgical performance or excision of the lesion and filling the cavity with hydroxyapatite. In all cases in which this type of therapy was performed a great effectiveness of the treatment was observed as an alternative therapy for bone graft with a bone-implantation or osseointegration response. Patients had excellent bone resolution, which confirmed the high biocompatibility and osteoconductive power of coral porous hydroxyapatite HAP-200.
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Solitary bone cyst is an uncommon non-epithelial lesion of the jaw bones. It was first defined by Lucas and Blum in 1929. It is classified as an intraosseous pseudocyst. They are asymptomatic and are usually seen during routine radiographical examination. According to the 2002 classification of the WHO, traumatic bone cysts are miscellaneous lesions. This report describes an 18-year-old female patient who had a solitary bone cyst in the posterior region of mandible associated with an impacted third molar.
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STUDY DESIGN: A case report and review of the literature. OBJECTIVES: To discuss a solitary bone cyst originating from the pedicle of the first lumbar vertebra. SUMMARY OF LITERATURE REVIEW: The solitary bone cyst in the spinal colume is extremely rare. Since Dawson reported the first case in fourth cervical vertebral body, only 8 cases have been reported. The solitary bone cyst originating in the pedicle of the lumbar vertebra is the first reported case. MATERIALS AND METHODS: A 53-year-old female patient visited the emergency room for severe radiating pain to the left lower extremity. T2 weighted MRI image showed a solitary bone cyst in the left pedicle of the first lumbar vertebra. RESULTS: The medial wall of the pedicle showed cortical breakage causing nerve root compression. Pathology revealed fibrous membrane corresponding to a bone cyst. On postoperative 2 years of follow up, the patient was pain-free enjoying normal daily life. CONCLUSION: A case report of a solitary bone cyst in the left pedicle of the first lumbar vertebra accompanied with severe radiating pain resulting from a pathologic fracture and expansion of the medial pedicle wall.
Sujets)
Femelle , Humains , Adulte d'âge moyen , Kystes osseux , Service hospitalier d'urgences , Études de suivi , Fractures spontanées , Membre inférieur , Imagerie par résonance magnétique , Membranes , Anatomopathologie , Radiculopathie , RachisRésumé
Solitary bone cyst are usually found in the juxta-epiphyseal region of metaphysis of long bones of children. They are rarely seen in non-tubular bones. The following case describes what we believe to be a solitary cyst of the capitate. Cyst was treated by radical curettage and packing with autogenous iliac bone. The most recent evaluation 7 months after surgery showed no discomfort.