INCISURA ULNARIS Meaning and
Definition
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Incisura ulnaris, also known as the ulnar notch, is a specific anatomical structure located on the lower end of the ulna bone in the forearm. It is a shallow depression or concavity that is present on the medial (inner) side of the bone where it articulates with the wrist bones. The ulnar notch is an important landmark for understanding the structure and function of the wrist joint.
The incisura ulnaris plays a significant role in the mobility and stability of the wrist joint. It forms the distal (lower) part of the conjunction between the ulna and the radius, the two bones of the forearm. This region connects the ulna to the carpal bones, allowing for movements such as flexion, extension, adduction, and abduction of the hand and wrist.
The concave depression of the incisura ulnaris accommodates the convex head of the ulna, forming a joint known as the ulnar notch or the distal radioulnar joint. This joint allows for rotational movements of the forearm, particularly the pronation and supination actions.
The incisura ulnaris is vital for maintaining the proper alignment of the bones of the wrist and forearm. It provides stability and support to the joint, preventing dislocation and ensuring smooth and controlled movements. Additionally, the structure of the incisura ulnaris contributes to the overall strength and integrity of the upper limb, allowing for precise and coordinated hand movements.
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Ulnar notch, sigmoid cavity of the radius, a concave surface on the inner side of the lower extremity of the radius articulating with the head of the ulna.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for INCISURA ULNARIS
- incisura ulnaric
- incisura ulnariq
- incisura ulnarir
- inncisuraulnaris
- i ncisura ulnaris
- in cisura ulnaris
- inc isura ulnaris
- inci sura ulnaris
- incis ura ulnaris
- incisu ra ulnaris
- incisur a ulnaris
- incisura u lnaris
- incisura ul naris
- incisura uln aris
- incisura ulna ris
- incisura ulnar is
- incisura ulnari s
Etymology of INCISURA ULNARIS
The word "incisura ulnaris" is derived from Latin.
- "Incisura" comes from the Latin verb "incidere", which means "to cut into" or "to notch". It is derived from the prefix "in-" (meaning "into" or "in") and the verb "caedere" (meaning "to cut").
- "Ulnaris" is derived from the Latin noun "ulna", which means "elbow" or "forearm".
When combined, "incisura ulnaris" refers to the "ulnar notch". This term is used in anatomy to describe a notch on the inner side of the proximal end of the ulna bone, which articulates with the humerus bone to form the elbow joint.
