(redirected from Acromion process)
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
Related to Acromion process: Medial border of scapula


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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(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]
Farlex Partner Medical Dictionary © Farlex 2012


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

a·cro′mi·al adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


(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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


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.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


the ventral prolongation of the spine of the shoulder blade or SCAPULA.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
The maximum breadth of the acromion process was measured as the maximum distance between the lateral and the medial borders at the midpoint of the acromion process.
For these measurements, socket 2 was removed and a padded load cell was placed at the appropriate position and direction on or across from the acromion process. The subject was instructed to keep his or her shoulder in the same position and resist the force of the load cell while the load cell was pressed against the shoulder from above, the front, or the rear (force generated during shoulder depression could not be measured with this apparatus), and to indicate when the force applied by the load cell became uncomfortable to bear.
The Parameters Related to Scapula as a whole, Acromion Process and Glenoid Cavity were Measured using Vernier Callipers.
The UG axis was centered on the top of the subject's head; the fixed arm was aligned parallel to an imaginary line between the subject's acromion processes, and the movable arm was aligned with the subject's nose.
Triceps skin fold thickness was measured at midway between the lateral projection of the acromion process of the scapular and the inferior margin of the olecranon process of the ulna.
Crepitus was elicited over the acromion process and at the superior aspect of the shoulder during active abduction and external rotation.
We placed reflective markers on the sternal notch and bilaterally on the acromion process, lateral humeral epicondyle, ulnar styloid process, greater trochanter, lateral femoral condyle, lateral malleolus, the anterior aspect of the shoe (approximately between the first and second metatarsal), and the posterior aspect of the shoe (in the region of the calcaneus).
Arm length was measured as the distance from the acromion process to the fingertip with the arm at the side.
The driver's height and weight (in footwear), lower limb length (from the lateral condyle of the tibia to the ground; in shoes), upper arm length (from the acromion process to the lateral epicondyle of the humerus), and lower arm length (lateral epicondyle of the humerus to the styloid process of the ulna) were measured with the driver standing outside the car.
A longitudinal incision from the posterior part of the Acromion process to the lateral epicondyle was made to identify the axillary nerve, radial nerve and plate.
Glass marble naming and locations Segment / Joint Label Location Head L/R FHD Front head marker Shoulder joint L/R ACR The midpoint on the acromion process lateral ridge Elbow joint L/R MEL Medial epicondyle of the humerus L/R LEL Lateral epicondyle of the humerus Wrist joint L/R AMWR Anterior mid-stylion L/R PMWR Posterior mid-stylion Trunk L/R ICP Tubercle of the iliac crest Knee joint L/R MKN Medial epicondyle of the femur L/R LKN Lateral epicondyle of the femur Ankle joint L/R MAN Medial malleolus of the tibia L/R LAN Lateral malleolus of the tibia Table 3.