Subscapularis muscle
Citation, DOI, disclosures and article data
At the time the article was created Jeremy Jones had no recorded disclosures.
View Jeremy Jones's current disclosuresAt the time the article was last revised Ciro Menna Barreto Duarte had no financial relationships to ineligible companies to disclose.
View Ciro Menna Barreto Duarte's current disclosures- Subscapularis tendon
- Subscapularis muscle
The subscapularis muscle is one of the four muscles that make up the rotator cuff, the others being: supraspinatus, infraspinatus and teres minor.
Summary
origin: subscapular fossa of the scapula
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insertion: lesser tubercle of the humerus and up to 40% may insert at surgical neck
some fibers also extend to the greater tubercle and bicipital groove
arterial supply: suprascapular, axillary and subscapular arteries 1
innervation: upper and lower subscapular nerves (C5-6)
action: internal rotation of the humerus, adduction of the humerus, stabilizes the shoulder joint
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bursa: lies between subscapularis tendon and glenoid neck
communicates with the joint cavity via the foramen of Weitbrecht (between the superior and middle glenohumeral ligament)
Quiz questions
References
- 1. Standring S, Gray H. Gray's anatomy, the anatomical basis of clinical practice. Churchill Livingstone. (2008) ISBN:0443066841. Read it at Google Books - Find it at Amazon
- 2. Schünke M, Schulte E, Ross LM et-al. Thieme atlas of anatomy, general anatomy and musculoskeletal system. Thieme Publishing Group. (2006) ISBN:3131420812. Read it at Google Books - Find it at Amazon
Incoming Links
- Infraspinatus muscle
- Duchenne muscular dystrophy
- Subscapularis insufficiency after shoulder arthroplasty
- Biceps pulley injury
- Lower subscapular nerve
- Shoulder protocol (MRI)
- Glenohumeral joint injection (technique)
- Imaging the shoulder
- Shoulder
- Osteoarthritis of the shoulder
- Quadrangular space
- Full-thickness rotator cuff tear
- Axilla
- Rotator cuff (mnemonic)
- Medial triangular space
- Shoulder impingement
- Subcoracoid bursa
- Long head of biceps tendon dislocation
- Subscapular nerves
- Movements of the arm
- Calcific tendinopathy of subscapularis
- Partial subscapularis tendon tear
- Rim rent tear - rotator cuff
- Avulsion fracture - greater tuberosity of the humerus
- Avulsion fracture of the lesser tuberosity of the humerus
- Subacromial-subdeltoid bursal rupture
- Subluxation of the long head of the biceps tendon
- Subscapularis tendon tear
- Greater tuberosity avulsion fracture
- Anterior labral tear- extensive
- Bifid biceps tendon
- Partial supraspinatus tear wih subacromial impingement
- Brachial plexus birth palsy
- Bifid biceps tendon
- SLAP tear and supraspinatus full-thickness tear
- Bankart lesion with grade V SLAP tear (shoulder MR-arthrogram)
- Posterior shoulder dislocation
- Subscapularis tendon tear
- Complete rupture of the subscapularis tendon
- Subscapularis myotendinous junction tear - mimicry
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skeleton of the upper limb
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