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Rev. bras. ortop ; 47(2): 241-245, mar.-abr. 2012. ilus
Article in Portuguese | LILACS | ID: lil-643104

ABSTRACT

OBJETIVO: Este estudo objetiva apresentar sete casos de necrose avascular de sesamoide e relatar o papel da cintilografia óssea no diagnóstico desses pacientes. MÉTODOS: Sete pacientes com suspeita clínica de necrose avascular de sesamoide submetidos a cintilografia óssea trifásica com 30mCi de MDP-99mTc. RESULTADOS: A maioria dos pacientes eram adultos jovens, do sexo feminino, com queixas de dor limitante em antepé, que faziam uso de calçados inadequados e/ou apresentavam relato de trauma associado ou não à fratura. Não houve predileção por um dos pés ou entre sesamoides tibial ou femoral. Dois (28,57%) pacientes apresentavam sesamoides tibiais bipartidos e um (14,29%) apresentava bipartição de sesamoides tibial e fibular. Em 100% dos pacientes a cintilografia óssea trifásica, associada a outros métodos propedêuticos, mostrou-se fundamental para o diagnóstico. A conduta inicial em todos os casos foi conservadora. Nos quatro casos (57,14%) em que não houve remissão dos sintomas, excisão cirúrgica do tecido sesamoideo necrotizado foi realizada. Em todos os pacientes a terapia utilizada se mostrou eficaz, havendo completa remissão dos sintomas sem complicações ou deformidades do antepé. CONCLUSÕES: A cintilografia óssea trifásica torna-se angular na propedêutica da necrose avascular do sesamoide, concorrendo com diagnóstico precoce acurado e permitindo ao especialista tratamento adequado.


OBJECTIVE: This study aimed to present seven cases of avascular necrosis of the sesamoid end report the role of bone scintigraphy in the diagnosis of these patients. METHODS: Seven patients with clinical suspicion of avascular necrosis of the sesamoid underwent three-phase bone scintigraphy with 30 mCi of 99mTc-MDP. RESULTS: Most of the patients were young female adults with complaints of limiting pain in the forefoot, who were making use of inappropriate footwear and/or had a history of injury with or without fracture. There was no predominance of either of the feet or between the femoral or tibial sesamoid. Two patients (28.57%) had a bipartite tibial sesamoid and one (14.29%) had splitting of the tibial and fibular sesamoids. In 100% of the patients, three-phase bone scintigraphy, combined with other propaedeutic methods, proved to be crucial for the diagnosis. The initial procedure in all cases was conservative. In four cases (57.14%), there was no remission of symptoms, and surgical excision of the necrotized sesamoid tissue was performed. In all the patients, the therapy used was effective, with complete remission of symptoms, without complications or deformities of the forefoot. CONCLUSIONS: Three-phase bone scintigraphy becomes a cornerstone of the propaedeutics when avascular necrosis of the sesamoid is suspected, through contributing towards early and accurate diagnosis and enabling allowing appropriate specialized treatment.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Osteonecrosis , Radionuclide Imaging
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