acromion

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acromion

 [ah-kro´me-on]
the lateral extension of the spine of the scapula, forming the highest point of the shoulder. adj., adj acro´mial.
 Posterior (dorsal) surface of the scapula, showing the acromion. From Dorland's, 2000.

a·cro·mi·on

(ă-krō'mē-on), [TA] Avoid the misspelling achromion.
The lateral extension of the spine of the scapula that projects as a broad flattened process overhanging the glenoid fossa; it articulates with the clavicle and gives attachment to part of the deltoid muscles. Its lateral border is a palpable landmark ("the point of the shoulder").
Synonym(s): acromial process
[G. akrōmion, fr. akron, tip, + ōmos, shoulder]

acromion

(ə-krō′mē-ən)
n. pl. acro·mia (mē-ə)
The outer end of the scapula to which the collarbone is attached.

a·cro′mi·al adj.

Acromion

The flattened lateral, vaguely triangular projection of the spine of the scapula that forms the highest point of the shoulder and articulates with the clavicle. The acromion forms the point of attachment for the trapezius and deltoid muscles; medially, the acromion articulates with the lateral end of the clavicle, immediately behind the attachment of the coracoacromial ligament, the latter of which, in conjunction with the acromion and the coracoid process, forms an arch over the glenohumeral joint, preventing its upward dislocation and limiting the upward rotation of the humerus. The acromion is recognised by its thickened lateral border, which is a palpable subcutaneous mass.

ac·ro·mi·on

(ă-krō'mē-on) [TA]
The lateral end of the spine of the scapula, which projects as a broad flattened process overhanging the glenoid fossa; it articulates with the clavicle and gives attachment to parts of the deltoid and trapezius muscles.
Synonym(s): acromial process.
[G. akrōmion, fr. akron, tip, + ōmos, shoulder]

acromion

The outermost extremity of the spine of the shoulder-blade. The acromion is joined to the outer tip of the collar bone (clavicle) in the acromioclavicular joint.

acromion

the ventral prolongation of the spine of the shoulder blade or SCAPULA.
References in periodicals archive ?
Type II acromia was observed in 51.1% of cases and compared favorably with a weighted mean of 53.9 extracted from the literature (Table II).
This study revealed a high frequency of Type I acromia (flat inferior surface) on the right side, whilst Types II (curved inferior surface) and III (hooked inferior surface) acromia were most prevalent on the left side.
and Mohamed & Abo-Sheisha, both of whom recorded the high prevalence of Types II and III acromia in male individuals while Type I acromia commonly presented in female individuals.
The high frequency of Types I (flat inferior surface), II (curved inferior surface) and III (hooked inferior surface) acromia in the Black race group may be related to the racial distribution of the sample size.