Scaphoid Fracture Nonunion: Correlation Of Radiographic Imaging, Proximal Fragment Histologic Viability Evaluation, And Estimation Of Viability At Surgery

dc.creatorBervian
dc.creatorMichel Roberto; Ribak
dc.creatorSamuel; Livani
dc.creatorBruno
dc.date2015-JAN
dc.date2016-06-07T13:14:09Z
dc.date2016-06-07T13:14:09Z
dc.date.accessioned2018-03-29T01:34:57Z
dc.date.available2018-03-29T01:34:57Z
dc.identifier
dc.identifierScaphoid Fracture Nonunion: Correlation Of Radiographic Imaging, Proximal Fragment Histologic Viability Evaluation, And Estimation Of Viability At Surgery. Springer, v. 39, p. 67-72 JAN-2015.
dc.identifier0341-2695
dc.identifierWOS:000347730200010
dc.identifier10.1007/s00264-014-2579-4
dc.identifierhttp://link.springer.com/article/10.1007%2Fs00264-014-2579-4
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/241572
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1305270
dc.descriptionPurpose The purpose of this study was to correlate the pre-operative imaging, vascularity of the proximal pole, and histology of the proximal pole bone of established scaphoid fracture non-union. Methods This was a prospective non-controlled experimental study. Patients were evaluated pre-operatively for necrosis of the proximal scaphoid fragment by radiography, computed tomography (CT) and magnetic resonance imaging (MRI). Vascular status of the proximal scaphoid was determined intra-operatively, demonstrating the presence or absence of puncate bone bleeding. Samples were harvested from the proximal scaphoid fragment and sent for pathological examination. We determined the association between the imaging and intra-operative examination and histological findings. Results We evaluated 19 male patients diagnosed with scaphoid nonunion. CT evaluation showed no correlation to scaphoid proximal fragment necrosis. MRI showed marked low signal intensity on T1-weighted images that confirmed the histological diagnosis of necrosis in the proximal scaphoid fragment in all patients. Intra-operative assessment showed that 90 % of bones had absence of intra-operative puncate bone bleeding, which was confirmed necrosis by microscopic examination. Conclusions In scaphoid nonunion MRI images with marked low signal intensity on T1-weighted images and the absence of intra-operative puncate bone bleeding are strong indicatives of osteonecrosis of the proximal fragment.
dc.description39
dc.description1
dc.description
dc.description67
dc.description72
dc.description
dc.description
dc.description
dc.languageen
dc.publisherSPRINGER
dc.publisher
dc.publisherNEW YORK
dc.relationINTERNATIONAL ORTHOPAEDICS
dc.rightsfechado
dc.sourceWOS
dc.subjectAvascular Necrosis
dc.subjectBone-graft
dc.subjectVascularity
dc.subjectComplications
dc.subjectEnhancement
dc.subjectSclerosis
dc.subjectDiagnosis
dc.subjectPatterns
dc.titleScaphoid Fracture Nonunion: Correlation Of Radiographic Imaging, Proximal Fragment Histologic Viability Evaluation, And Estimation Of Viability At Surgery
dc.typeArtículos de revistas


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