hand, grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint, the carpal bones, the metacarpal bones, and the phalanges. The digits include a medial thumb (when viewed with the palm down), containing two phalanges, and four fingers, each containing three phalanges.
Anatomy of the Hand The hand is composed of many different bones, muscles, and ligaments that allow for a large amount of movement and dexterity. There are three major types of bones in the hand itself: Phalanges. These 14 bones are found in the fingers of each hand and also in the toes of each foot. Each finger has three phalanges (the distal, middle, and proximal). The thumb only has two ...
Human hand parts Areas of the human hand include: The palm (volar), which is the central region of the anterior part of the hand, located superficially to the metacarpus. The skin in this area contains dermal papillae to increase friction, such as are also present on the fingers and used for fingerprints. The opisthenar area (dorsal) is the corresponding area on the posterior part of the hand ...
Hand surgeons use Verdan’s zones to classify tendon injuries. This system divides the hand and forearm into five zones (plus additional zones for the thumb). Each zone has its own challenges when it comes to tendon repair. Zone I: This is the fingertip region, from the tip of the finger to the middle of the middle phalanx.
Hand Bones There are 27 bones in each human hand, with the total number being 54. These bones, along with the muscles and ligaments in the region, give structure to the human hand and allow for all the movement and dexterity of the hands and fingers. There are three major types of bones in hand, based on their location and purpose.