{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T17:31:26Z","timestamp":1792085486510,"version":"4.4.0"},"reference-count":22,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2010,6]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>Deep brain stimulation (DBS) of the ventral intermediate nucleus of the thalamus (VIM) has proven to be efficacious in the treatment of essential tremor (ET). The authors report on long-term follow-up of a series of patients treated at 1 institution by 1 neurosurgeon.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Thirty-four patients with ET received unilateral or bilateral VIM DBS. The tremor and handwriting components of the Fahn-Tolosa-Marin clinical tremor rating scale were assessed pre- and postoperatively. Visual analog scale scores for overall patient satisfaction and tremor control were recorded. Stimulation parameters at different intervals after surgery were also recorded.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>The average follow-up period was 56.9 months. The average tremor score improved from 3.27 preoperatively to 0.64 postoperatively (on stimulation; p &lt; 0.001) and the average handwriting score improved from 2.94 to 0.89 (p &lt; 0.001). The average visual analog scale score for overall satisfaction was 8.12 and for tremor control was 1.43. Overall, there was an 80.4% improvement in tremor and 69.7% improvement in handwriting. In 12 patients both tremor and handwriting scores were compared between 57.3 months and 90.7 months after surgery and no significant changes were discovered. Comparison of stimulation parameters at onset and at 1\u20133, 3\u20135, 5\u20137, and &gt; 7 years after surgery showed significant differences, with a gradual increase in stimulation parameters within 5 years after surgery. The overall hardware-related complication rate was 23.5%.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Deep brain stimulation of the VIM is an efficient and safe treatment for ET. Tremor and handwriting improvements in long-term follow-up are stable. The patients' perception of their outcome is quite good. However, tolerance may develop in some patients requiring changes in stimulation parameters.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2009.10.jns09371","type":"journal-article","created":{"date-parts":[[2009,11,13]],"date-time":"2009-11-13T15:03:44Z","timestamp":1258124624000},"page":"1271-1276","source":"Crossref","is-referenced-by-count":155,"title":["Long-term results of thalamic deep brain stimulation for essential tremor"],"prefix":"10.3171","volume":"112","author":[{"given":"Kai","family":"Zhang","sequence":"first","affiliation":[{"name":"Neurosurgical Department, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sanjay","family":"Bhatia","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael Y.","family":"Oh","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Cohen","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cindy","family":"Angle","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Donald","family":"Whiting","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-1121271","series-title":"Acta Neurochir (Wien)","first-page":"75","article-title":"Stimulation of the ventral intermediate thalamic nucleus in tremor dominated Parkinson's disease and essential tremor","volume":"136","author":"Alesch","year":"1995"},{"issue":"11 Suppl 4","key":"b2-1121271","series-title":"Neurology","first-page":"S7","article-title":"Criteria for the diagnosis of essential tremor","volume":"54","author":"Bain","year":"2000"},{"key":"b3-1121271","series-title":"Appl Neurophysiol","first-page":"344","article-title":"Combined (thalamotomy and stimulation) stereotactic surgery of the VIM thalamic nucleus for bilateral Parkinson disease","volume":"50","author":"Benabid","year":"1987"},{"key":"b4-1121271","series-title":"Stereotact Funct Neurosurg","first-page":"367","article-title":"Surgical complications of deep brain stimulation. 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