Cosman-Roberts-Wells [Neurosurgery Wiki]

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====== Cosman-Roberts-Wells ======

The Cosman-Roberts-Wells [[stereotactic]] instrument is a recently developed modification, based on an arc-radius design, of the [[Brown-Roberts-Wells]] [[stereotactic frame]] utilizing the existing fixation and fiducial components of the Brown-Roberts-Wells stereotactic [[system]] to localize and verify target data. The design modification has been made with a view to facilitating technical approaches both in stereotactic biopsy and in stereotactic craniotomy, whilst encompassing the same stereotactic space. Initial experience with the Cosman-Roberts-Wells instrument is reported. Over a 5-month period 55 procedures were performed which included 40 stereotactic biopsies, five CT-guided stereotactic craniotomies, three stereotactic placements of a Bennett Ball for thalamotomy, three stereotactic implantations of intracranial electrodes for recording in drug-resistant epilepsy, three aspirations of cyst or haematoma and one implantation of a Gutin catheter for interstitial brachytherapy. There was minimal morbidity and no mortality related to operation. This frame offers rapid targeting without the need to pre-determine entry points, as well as allowing direct lateral passes and unimpeded stereotactic craniotomy
((Pell MF, Thomas DG. The initial experience with the Cosman-Roberts-Wells
stereotactic system. Br J Neurosurg. 1991;5(2):123-8. PubMed PMID: 1863372.
)).