Finger Rehabilitation Support System Using a Multifingered Haptic Interface Controlled by a Surface Electromyogram

Figure 3

The muscles related to finger motion. The muscle functions are as follows: the flexor digitorum superficialis muscle is for PIP joint flexion of the 2–5th fingers and is innervated by the median nerve. The flexor digitorum profundus muscle is for DIP joint flexion of the 2-5th fingers and is innervated by median nerve. The extensor digitorum muscle is for MP, PIP, and DIP extension of the 2–5th fingers and is innervated by the radial nerve. The above 3 muscles are located at the forearm. The abductor digiti minimi muscle is for abduction of the pinkie and is innervated by the ulnar nerve. The opponens pollicis muscle is for thumb opposition motion and is innervated by the median nerve. These two muscles are in the hand.