ACROMIAL ANGLE Meaning and
Definition
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The acromial angle is a term used in anatomy and orthopedics to describe the angle formed by the meeting of two lines: one passing through the lateral border of the acromion process of the scapula (shoulder blade) and the other passing through the distal end of the clavicle (collarbone). This angle is an important measurement in understanding the biomechanics and structural integrity of the shoulder joint.
The acromial angle is primarily used to evaluate the orientation and shape of the acromion, which is a bony projection of the scapula that forms the apex of the shoulder. The shape and angle of the acromion can influence the risk of impingement and other shoulder conditions, as well as impact the range of motion and overall functionality of the joint.
Various classifications of acromial angles exist, with three primary types commonly identified: type I, type II, and type III. Type I describes a flat or horizontal acromion, type II refers to a curved or convex acromion, and type III signifies a hooked or beaked acromion. These classifications help in understanding the distribution of forces across the shoulder joint and can aid in diagnosing and treating specific shoulder injuries and pathologies.
Overall, the acromial angle serves as a valuable anatomical measurement in evaluating the shoulder joint and its associated structures. It contributes to the understanding of shoulder mechanics, facilitates diagnosis and treatment of various shoulder conditions, and is an essential component of the broader study of shoulder anatomy and biomechanics.
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The angle at the lower edge of the spine of the scapula where it ascends to become the acromion.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ACROMIAL ANGLE
- zcromial angle
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- aceomial angle
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Etymology of ACROMIAL ANGLE
The word "acromial" comes from the Latin word "acromion", which means "highest point of the shoulder". It is derived from the Greek word "akros", meaning "highest" or "topmost". The term "angle" has its origins in the Latin word "angulus", which means "corner" or "angle". When combined, the term "acromial angle" refers to the angle formed by the acromion process of the scapula (shoulder blade) and the clavicle (collarbone).
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