Thumb Anatomy

The thumb is the first digit finger of the handalthough your thumb is not actually a finger people still classify it as one. Injuries to the fingers and thumb are a common reason for visits to primary care clinics and emergency departments.

Thumb Motion Hand Orthobullets

This article discusses the ligamentous structures of the metacarpophalangeal mp joints see the first image below proximal interphalangeal pip joints and distal interphalangeal dip joints.

Thumb anatomy. This tendon travels along the back of the thumb and helps straighten the thumb. It differs from other digits in having only two phalanges tubular bones of the fingers and toes. To care for such injuries well clinicians must have a sound grasp of basic hand anatomy.

Few structures of the human anatomy are as unique as the hand. There are four thumb tendons. This tendon helps you bend the thumb.

The thumb also differs in having much freedom of movement and being opposable to tips of other digits. Did you know that the tendons attached to your thumb run all the way up your forearm. The medical latin english noun for thumb is pollex compare hallux for big toe and the corresponding adjective for thumb is pollical.

The hand needs to be mobile in order to position the fingers and thumb. Additionally the thumb has 2 joints that will be discussed here the mp joint and the interphalangeal ip joint see the second image below. The thumb possesses a unique and wide range of motion not shared by the hands other digits.

The thumb is the first of the hands five digits but it is typically not referred to as a finger. Adequate strength forms the basis for normal hand function. Thumb short thick first digit of the human hand and of the lower primate hand and foot.

This tendon helps you move the thumb away from the palm to form an open hand. When a person is standing in the medical anatomical position where the palm is facing to the front the thumb is the outermost digit.

Thumb Arthritis Pain At The Base Of The Thumb With