Carpal Bone Siding

In human anatomy the main role of the wrist is to facilitate effective positioning of the hand and powerful use of the extensors and flexors of the forearm and the mobility.

Carpal bone siding.

Those between the radius and the proximal carpal bones except pisiform 8. The smallest of the carpal bones actually a sesamoid bone the pisiform is a pea shaped bone bearing only a single articular facet for the triquetral. Hamate the hamate is the carpal bone which has the hook shaped non articular projection called the hamulus. Articulations between the carpal bones in hand are an.

While this may make me a bad anatomist editor s note. Capitate the capitate is a larger carpal bone that articulates distally with the metacarpal 3 2 and sometimes 4. The pisiform serves as an attachment site for the flexor retinaculum. Dorsal surface triquetrum 3.

Like all carpals the capitate possesses a distinctive irregular shape that makes it easy to identify and side. The pisiform cannot always be accurately assigned to side although the lateral surface usually bears a small grove for the ulnar artery. Once i know that i ve got a scaphoid i orient it so that the tubercle is the head of the snail and the smooth indentation for the capitate. In the distal row all of the carpal bones articulate with the.

Click on the tags below to find other quizzes on the same subject. All the joints involving the carpal bones are synovial joints where the articulation surface has a flexible cartilage layer along with a fluid lining to allow for better freedom of movement 22. The carpal bones are the eight small bones that make up the wrist or carpus that connects the hand to the forearm the term carpus is derived from the latin carpus and the greek καρπός karpós meaning wrist. The tight space between this fibrous band and the wrist bone is called the carpal tunnel.

This is an online quiz called carpal bones. Palmar surface flexor carpi ulnaris abductor. A membranous band the flexor retinaculum spans between the medial and lateral edges of the arch forming the carpal tunnel. This quiz has tags.

This is a key aid in the diagnosing the hamate carpal. Touch your thumb to every finger like you are. The end is squared off whilst the proximal end is rounded. Proximally the scaphoid and lunate articulate with the radius to form the wrist joint also known as the radio carpal joint.

Repeat this for five to 10 times. Smallest carpal bone last to ossify sits at a plane anterior to the other carpal bones medial to guyon s canal 2. Collectively the carpal bones form an arch in the coronal plane. There is a printable worksheet available for download here so you can take the quiz with pen and paper.

It does make her a bad anatomist when i m working with whole carpals i rarely rely on their anatomical relationships but instead use cheap tricks to identify and side them.