The Bio2M muscle testing device is adapted to your subject. The Which uses torque motors and transducers adapted to:

   - the tested joint and the force developed by the muscles crossing    the joint:
Ankle joint , Knee joint,  Elbow joint and Wrist joint.  
   - the subject profile (e.g. sportsmen, patients, children).

Bio2M also develops muscle testing devices to meet your specific needs. Further multi-joint systems can be designed for evaluating mechanical properties of muscles crossing several joints.