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[[Image:Os_pisiforme.GIF|left|thumb|300px|pisiform]]
[[Image:Os_pisiforme.GIF|left|thumb|300px|pisiform]]


The Pisiform Bone (os pisiforme) The pisiform bone may be known by its small size, and by its presenting a single articular facet. It is situated on a plane anterior to the other carpal bones and is spheroidal in form. Its dorsal surface presents a smooth, oval facet, for articulation with the triquetral bone: this facet approaches the superior, but not the inferior border of the bone. The palmar (volar) surface is rounded and rough, and gives attachment to the transverse carpal ligament, and to the Flexor carpi ulnaris and Abductor digiti quinti. The lateral and medial surfaces are also rough, the former being concave, the latter usually convex.
The '''pisiform bone (os pisiforme)''' can be distinguished by its small size, and having a single articular facet. It is pea-shaped and is situated anteriorly to the other bones of the wrist. Its dorsal surface presents a smooth, oval facet, for articulation with the triquetral bone. This facet approaches the superior, but not the inferior border of the bone. The palmar (volar) surface is rounded and rough, giving attachment to the transverse carpal ligament, and to the flexor carpi ulnaris and abductor digiti quinti. The lateral and medial surfaces are also rough, the former being concave, the latter usually convex.
   
   
Articulation.—The pisiform articulates with one bone, the triquetrum
Articulation: the pisiform bone articulates only with one other bone, the triquetral.


Volar: Pertaining to both the palm and sole. It comes from word "vola" which the ancient Romans used for "the palm of the hand and the sole of the foot."
Volar: Pertaining to both the palm and sole. It comes from word "vola" which the ancient Romans used for "the palm of the hand and the sole of the foot."

Revision as of 21:39, 25 February 2007

Template:Systemic

pisiform bone (os pisiforme)

parent article - wrist or carpus

pisiform

The pisiform bone (os pisiforme) can be distinguished by its small size, and having a single articular facet. It is pea-shaped and is situated anteriorly to the other bones of the wrist. Its dorsal surface presents a smooth, oval facet, for articulation with the triquetral bone. This facet approaches the superior, but not the inferior border of the bone. The palmar (volar) surface is rounded and rough, giving attachment to the transverse carpal ligament, and to the flexor carpi ulnaris and abductor digiti quinti. The lateral and medial surfaces are also rough, the former being concave, the latter usually convex.

Articulation: the pisiform bone articulates only with one other bone, the triquetral.

Volar: Pertaining to both the palm and sole. It comes from word "vola" which the ancient Romans used for "the palm of the hand and the sole of the foot."

cf palmar (palm side of hand)and plantar (sole of foot)

The Triangular Bone (os triquetrum; cuneiform bone)

By comparison, the term "palm" applies to only the palm (the grasping side) of the hand. The Romans actually used the word "palma" for the outstretched palm of the hand.

Topics in Anatomy

SYSTEMIC ANATOMY Introduction and Systemic Overview

  • Anatomical Nomenclature
  • Basic Structure and Function of Cells
  • Integrating Cells into Tissues

Systemic Overview

  • Nervous System
  • Blood, Lymphoid Tissues and Haemopoiesis
  • Functional Anatomy of the Musculoskeletal System
  • Smooth Muscle and the Cardiovascular and Lymphatic systems
  • Skin and its Appendages
  • Endocrine System
  • Principles of Hormone Production and Secretion
  • Embryology
    • Embryogenesis
    • Prenatal and Neonatal Growth

Integumentary System

Skeletal System

Muscular System

Nervous System

Endocrine System

Cardiovascular System (Circulatory System)

Lymphatic System

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