EU EXTEND Projects researchers tested and compared the use of surface and intramuscular EMG measurements for the estimation of required joint torques using EMG driven modelling framework in healthy individuals and incomplete SCI patients. More info in the link:

A jointly publication done by Imperial College of London, CSIC and SESCAM.

Intramuscular EMG-driven Musculoskeletal Modelling: Towards Implanted Muscle Interfacing in Spinal Cord Injury Patients