<qa>  What is the impact of pinch grip force on CTS?Previous authors have recognised that pinch grip force is affected by in CTS Hsu et al. 2013. The investigators intend to extend this work by showing how other aspects of force control are altered in CTS throughout the action of picking an object up, and how they correlate with CTS severity. This will allow us to use different readings taken during a pinch grip test to assess CTS severity. This will also reveal how heavy objects may have a greater adverse affect on grip control in CTS patients. 