Pronunciation: [pˈɪsɪfˌɔːm bˈə͡ʊn] (IPA) 
The pisiform bone is a small, pea-shaped bone that is part of the wrist joint. The spelling of this bone can be explained using IPA phonetic transcription as /pɪsiːfɔːrm bəʊn/. The "pi-" is pronounced with a short "i" sound as in "pig", followed by "s" and "i" sounds. The "-form" ending is pronounced with a long "o" sound as in "go" and a silent "e". The final "bone" is pronounced with a short "o" sound as in "on".
The pisiform bone is a small, pea-shaped bone located in the wrist joint of the human body. It is one of the eight carpal bones that comprise the proximal row of the wrist. The pisiform bone is positioned on the palmar side of the wrist, anterior to the triquetrum bone and ulnar in relation to the other carpal bones.
Measuring approximately 1 centimeter in length, the pisiform bone is known for its rounded shape and slightly convex surface. It is often compared to the size of a pea, which explains its name, derived from the Latin word "pisum," meaning pea. Despite its small size, the pisiform bone plays a vital role in the overall structure and functionality of the wrist joint.
The pisiform bone serves multiple purposes, including providing a stable base for the flexor carpi ulnaris muscle and acting as a pulley for its tendon. It also aids in proper movement and function of the wrist, acting as a point of attachment for ligaments and tendons associated with the hand and forearm.
Due to its location and function, the pisiform bone can be subject to various injuries or conditions, such as fractures, dislocations, or arthritis. Nonetheless, understanding the anatomy and importance of the pisiform bone is essential for medical professionals when diagnosing and treating wrist-related disorders or injuries.
Os pisiforme.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "pisiform" comes from the Latin word "pisum", which means "pea". This is because the pisiform bone, one of the eight carpal bones located in the wrist, has a small and round shape resembling a pea.
