Radiology Teaching Files > Case 5420575

Contributed by: Fritsch & Thompson.
Patient: male

Fig. 1: abduction

Fig. 2: internal rotation

Fig. 3: external rotation
Discussion: Lateral downsloping of the acromion is one of several configurations of the relationship between the clavicle and the acromion.  It is common and reported over half of normal, asymptomatic shoulders. It may or may not be a predisposing factor for impingment.  There is some mild reactive sclerosis on the postero-lateral aspect of the humerus (see int. rotation projection) that may be an indication of chronic contact of the humerus and acromion.
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Additional Details:

Case Number: 5420575Last Updated: 07-27-2006
Anatomy: Skeletal System   Pathology: Normal/Variants
Exam Date: Access Level: Readable by all users
Keywords: acromion; anomaly; impingement

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