Anterior Labrum

Description of Variant

% Prevalence

Triangular

Not specified – CT Arthrography [33]

64% – MR Arthrography [28]

45 %  - MR Imaging [32]

50% - MR Imaging [35]

Round

Not specified – CT Arthrography [33] 17% - MR Arthrography [28]

19% - MR Imaging [32]

 Not specified – MR Imaging [35]

Flat

2% - MR Arthrography [28]

6% - MR Imaging [35]

7% - MR Imaging [32]

Cleaved

Not specified – CT Arthrography [33] 11% - MR Arthrography [28]

0% - MR Imaging [35]

15% – MR Imaging [32]

Notched

Not specified – CT Arthrography [33]

3% - MR Arthrography [28]

2% - MR Imaging [35]

8% – MR Imaging [32]

Crescent

Not specified  – MR Imaging [35]

Enlarged or Redundant

Not specified – Arthroscopy [33]

Not specified – CT Arthrography [33]

Unattached

6%  – MR Imaging [35]

Absent

Not specified – Arthroscopy [34]

2% - MR Arthrography [28]

6% - MR Imaging [32]

6%  - MR Imaging [35]

anterior labrum “…small yet well defined”. [34]

Not specified  - Arthroscopy [34]

Not specified - CT Arthrography [33]

The presence of a sulcus between the articular cartilage of the glenoid and a well developed anterior labrum [33]

Not specified - Arthroscopy [34]

Not specified – CT Arthrography [33]

Strangely shaped anterior labrum

Not specified – CT Arthrography [33]

Meniscoid appearance - a space is present between the labrum and the articular cartilage.

< 5% - Arthroscopy [6]

Thin anterior labrum

Not specified - CT Arthrography [33]