Effectiveness of Powerball System in People With Multiple Sclerosis

Inclusion Criteria

• •Age between 20 and 60 years
• •Diagnosed with MS according to McDonald criteria with an evolution time of more than two years
• •Evaluation in the Kurtzke Disability Status Scale in Multiple Sclerosis (EDSS) with a score between 3.5 and 6
• •Score less than or equal to 4 on the "Pyramidal Function" section of the EDSS functional scale
• •Stable medical treatment for at least six months prior to surgery
• •Muscle tone in the upper extremities no greater than 2 points on the modified Ashworth scale.
• •Muscle balance equal to or greater than 3 in the upper extremity
• •Absence of cognitive impairment with ability to understand instructions and score equal to or greater than 4 on the Minimental Test.