What Is Thenar Eminence?
The thenar eminence is a term given to a muscle group located in the thumb as well as on the palm of the hand. The primary function of the thenar eminence is to allow for the different types of muscle movements performed by the thumb. The nerve responsible for providing the nerve supply to this area of the body is known as the median nerve. There are three primary muscles which work together to create the muscle group known as the thenar eminence. The first of these muscles is known as the abductor pollicis brevis. This muscle helps to rotate the thumb. It also helps the thumb to have the ability to move away from the index finger. This muscle is affected when capal tunnel syndrome is present, preventing pronation of the first finger, otherwise called the thumb.
