One study followed 89 patients with PD who were treated with unilateral subthalamotomy. Sixty-eight patients were available for evaluations after 12 months, 36 after 24 months and 25 patients after 36 months.
Definition of alpaca for English Language Learners. : 1  a South American animal that is related to the llama and has long woolly hair. : 2  wool of the alpaca or a cloth made of it.
There are thought to be just on three million alpacas worldwide with 94 percent living in South America. This worldwide population is made up of 93 % huacaya and 7 % suri alpacas. There are about 35,000 registered alpacas in the UK and 300,000 in th USA and 300,000 in Australia. There are two different breeds of alpacas, the Huacaya, pronounced wa-ky-ya and the suri.