Hand by the ability to be brought opposite to the fingers, a muscle action known as opposition. The skeleton of the human hand consists of 27 bones: the eight short carpal bones of the wrist are organized into a proximal row (scaphoid, lunate, triquetral and pisiform) which articulates with the bones of the forearm, and a distal row (trapezium, trapezoid, capitate and hamate), which articulates with the bases of the five metacarpal bones of the hand. The heads of the metacarpals will each in turn articulate with the bases of the proximal phalanx of the fingers and thumb. These articulations with
Hand transplantation comparison, a typical heart transplant operation lasts 6 to 8 hours. Surgeons usually connect the bones first, followed by tendons, arteries, nerves, veins, and skin. The recipient of a hand transplant needs to take immunosuppressive drugs similar to other transplants such as kidneys or livers, as the body's natural immune system will try to reject, or destroy, the hand. These drugs cause the recipient to have a weaker immune system which may lead to an increased risk of infections and some cancers. There have been many advances in solid organ transplantation over the years that have made these medications quite