Prof. Lennard Funk’s Education Portal

Call: 01625 545071
Email: [email protected]
For treatment enquires visit The Arm Clinic

Subscapularis

This is “…the secondary landmark of shoulder arthroscopy”. [7] It extends between its origin at the humeral head to the lesser tuberosity of the humerus. [6] The superior border of the tendon is intra-articular, “…lying in a recess between the superior and middle glenohumeral ligaments”. [8]

Snyder [6] described the intra-articular appearance of the tendon, with it most commonly having “…a smoothly rolled edge…” Variants include the leading edge having a split or bifid type appearance, with no associated fraying and a prevalence of 3%. [6] 

In an arthroscopic study, Wright et al [74] reported only 26% ± 11% of the entire tendon could be seen through arthroscopy. This represents 44% of the mean height of the tendon. [74] Poor visualisation of the tendon occurs as a result of its position in which it covered by the middle and inferior glenohumeral ligaments. [74]

A separate arthroscopic study showed the average height and width of the intra-articular subscapularis tendon to be 5mm and 11mm respectively. [75]

From our study:
A subscapularis tendon was noted in all 132 cases, with all having “…a smoothly rolled edge…” [6] A 3% prevalence of a bifid subscapularis tendon noted in the present study is similar to that previously documented. [6] Examples of previously undescribed double and triple subscapularis tendons were also noted. 

Table 15 – Prevalence and variation in the appearance of the Subscapularis tendon

 

 

No.

%

Prevalence

 

 

Present

132

100%

Absent

0

0%

Appearance – smooth rolled up edges

 

 

Present

132

100%

Absent

0

0%

Prevalence of Variations

 

 

Present

7

5.3%

Absent

125

94.7%

Variation in the appearance of the Subscapularis tendon

 

 

Split / Bifid subscapularis tendon

3

3%

Double tendon appearance

2

2%

Triple tendon appearance

2

2%

 

This website is certified by Health On the Net Foundation. Click to verify. This site complies with the HONcode standard for trustworthy health information:
verify here.

ShoulderDoc.co.uk satisfies the INTUTE criteria for quality and has been awarded 'editor's choice'.

The material on this website is designed to support, not replace, the relationship that exists between ourselves and our patients. Full Disclaimer