subscapularis


Also found in: Encyclopedia.

sub·scap·u·la·ris (mus·cle)

[TA]
intrinsic (scapulohumeral) muscle of shoulder joint, the tendon of which contributes to the formation of the rotator cuff; origin, subscapular fossa; insertion, lesser tuberosity of humerus; action, rotates arm medially; its tonic contraction helps to hold the head of the humerus in the shallow glenoid fossa; nerve supply, upper and lower subscapular from posterior cord of brachial plexus (fifth and sixth cervical spinal nerves).
References in periodicals archive ?
Soft tissue transfers such as the Magnusson-Stack procedure (subscapularis transfer from the lesser tuberosity to the greater tuberosity) and the Putti-Platt procedure (medial capsular advancement of the lateral joint capsule with an associated subscapularis tendoesis) have been associated with decreased range of motion, altered joint biomechanics, and increased glenohumeral wear.
Associated involvement of subscapularis and infraspinatus muscles did not show much difference.
The site of each full-thickness subscapularis tendon tear was confirmed, and the incision was using subcutaneous and skin sutures.
The scapula glides over the thoracic wall, cushioned from the undulating surface of the ribs by the serratus anterior and subscapularis muscles.
Additional mass lesions with similar hypermetabolic activity were identified in the right subscapularis muscle ([SUV.sub.max] = 15) and left adrenal gland ([SUV.sub.max] = 15.3).
MRI of the right humerus was obtained and showed small bursal effusion, severe osteoarthritis, rotator cuff tear, severe chondral loss, severe tendinosis of subscapularis tendon, and full-thickness tear supraspinatus tendon, but no muscle edema.
I can feel the gentle stretch in my subscapularis buried behind each shoulder blade: the hard-to-reach muscles that contract and hurt, often leading to neck or shoulder pain.
For instance, a full-thickness tear of the SST was significantly associated with the entire spectrum of BPEs, whereas subscapularis tendon tears were significantly associated with moderate and severe BPEs.
The relationship between [VO.sub.2]max and waist circumference (5, 7, 11), BMI (5, 9, 11), body mass (9), body fat percentage (4), triceps skinfold (12), subscapularis skinfold (13) and sum of skinfolds (4, 5) has been verified.
One researcher demonstrated that SSB was a separate pouch.[sup][1] However, others believed that SSB was actually the superior subscapularis recess (SSR), which is an outpouching of the glenohumeral joint capsule.[sup][2],[3],[4] Whether or not the SSB and SSR are two different bursae must be confirmed.
Therefore the target muscles to which treatment must be directed are the pectoral muscles anteriorly (pectoralis major, pectoralis minor, and the subclavius), and the posterior muscles of thoracic-spinal extension (erector spinae and transversospinalis), shoulder girdle retraction (rhomboids and trapezius, especially middle trapezius), and humeral medial rotation (subscapularis, teres major, latissimus dorsi, anterior deltoid, and pectoralis major).
The major bursae are, the scapulothoracic bursa which is located between the posterior chest wall and the serratus anterior muscle and subscapular bursa which is located between the subscapularis and serratus anterior muscles (Fig.1).