pisiform


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Related to pisiform: hamate, trapezoid bone

pi·si·form

 (pī′sə-fôrm′)
adj.
Resembling a pea in size or shape.
n.
A small bone at the junction of the ulna and the carpus.

[Latin pīsum, pea; see pea + -form.]

pisiform

(ˈpɪsɪˌfɔːm)
adj
(Biology) zoology botany resembling a pea
n
(Anatomy) a small pealike bone on the ulnar side of the carpus
[C18: via New Latin from Latin pīsum pea + forma shape]

pisiform

- Shaped like a pea.
See also related terms for pea.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pisiform - a small wrist bone that articulates only with the triquetralpisiform - a small wrist bone that articulates only with the triquetral
carpal, carpal bone, wrist bone - any of the eight small bones of the wrist of primates
References in periodicals archive ?
The distal pole of the scaphoid and the pisiform should overlap the palmar cortex of the capitate.
Carpal tunnel is a covered canal comprised of scaphoid bone tubercle and trapezium edge at lateral, hamate bone hamulus and pisiform bone at medial.
They go on to show that another bone -- the pisiform -- was lost in bird-like dinosaurs, but then re-acquired in the early evolution of birds, probably as an adaptation for flight, where it allows transmission of force on the downstroke while restricting flexibility on the upstroke.
The ulnar nerve travels through the canal of Guyon (ulnar nerve tunnel) along the ulnar aspect of the wrist and is the most ulnar structure in the canal, in close proximity to the pisiform and hook of the hamate.
Moreover, the specimen pertains to a goose rather than a swan because the process of metacarpal I (terminology follows Howard, 1929) is high, the proximal edge of the process of metacarpal i is nearly perpendicular to the shaft, and the pit on the internal side below the pisiform process is separated from the intermetacarpal space by a distinct raised area (Woolfenden, 1961).
The presence (ossification) or absence of the pisiform and adductor sesamoid bones is also noted.
Isometric exercise of the FCU will act to compress the pisiform against the volar aspect of the triquetrum, thus contributing to stability in the presence of an ulnar midcarpal instability pattern.
For those anatomy junkies out there, I'm talking about the pisiform bone.