What is a capitate bone?
The capitate, also known as the os magnum, is the largest of the carpal bones and sits at the center of the distal carpal row. A distinctive head-shaped bone, it has a protected position in the carpus, and thus isolated fractures are unusual.
What is the purpose of the capitate bone?
Function. The carpal bones function as a unit to provide a bony superstructure for the hand. They allow movements of the wrist from side to side (medial to lateral) as well as up and down (anterior to posterior).
What type of bone is the capitate classified as?
The capitate is a carpal bone located in the most central portion of the wrist. The bones of the wrist are called carpals and the bones of the hand are called metacarpals. The capitate is the largest of the carpal bones.
What is the definition of capitate?
1 : forming a head. 2 : abruptly enlarged and globose.
What is lunate and capitate?
The lunate is one of the eight carpal bones located in the wrist. These eight bones are arranged into two rows with four bones in each. The lunate articulates laterally with the scaphoid, medially with the triquetrum, and inferiorly with the capitate and hamate.
What muscle attaches to the capitate?
adductor pollicis
The adductor pollicis is a two-headed muscle lying deep in the web space of the thumb (see Fig. 7.30; see also Fig. 7.28). This muscle has its proximal attachments on the most stable skeletal regions of the hand: The capitate bone and the second and third metacarpals.
Is the capitate bone a tarsal bone?
In fact, there are seven tarsal bones while there are eight carpal bones. Besides, talus, calcaneus, cuboid, navicular and three cuneiforms are the seven tarsal bones. Meanwhile, scaphoid, lunate, triangular, pisiform, trapezium, trapezoid, capitate, and hamate are the eight carpal bones.
What does capitate articulate with?
The capitate articulates with seven bones: the scaphoid and lunate proximally, the second, third, and fourth metacarpals distally, the trapezoid on the radial side, and the hamate on the ulnar side.
What is the meaning capacitate?
to make capable
transitive verb. 1 archaic : to make capable. 2 : to cause (sperm) to undergo capacitation.
What is Scapholunate?
The scapholunate is an interosseous carpal ligament that provides stability to the proximal carpal row. It consists of dorsal, proximal and palmar segments that bridge the scaphoid and lunate.
What is the function of the capitate bone?
Functions: What Does the Capitate Bone Do. It has the highest number of articulations among all the carpal bones, meaning it plays a vital role in shaping the carpal rows and maintaining the movements of the wrist.
Where is the capitate located in the wrist?
The capitate is a carpal bone located in the most central portion of the wrist. The bones of the wrist are called carpals and the bones of the hand are called metacarpals. The capitate is the largest of the carpal bones. It lies between the trapezoid and hamate, which are also carpal bones.
Which is the upper part of the capitate?
The upper part of the capitate (the part toward the metacarpals) is called the head, while the lower part (toward the proximal row) forms the body, with the middle part being referred to as the neck [4]. Due to this shape, it gets its name from the Latin word ‘caput’, meaning ‘head’ [5].
Where does the capitate get its blood supply?
The radioscaphocapitate ligament attaches with the capitate in a way that it creates a flexible sling that supports the scaphoid [11]. It gets its primary blood supply from the dorsal basal metacarpal and dorsal intercarpal arches.