Treatment of spasticity related to multiple sclerosis with intrathecal baclofen: A long-term follow-up.

Rekand & Grønning. J Rehabil Med. 2011 May;43(6):511-4.

14 patients with MS and an intrathecal baclofen pump were followed up clinically; intrathecal baclofen was well-tolerated and the effect lasts for up to 12 years.

"Excellent long-term results for this invasive, albeit expensive, treatment."