The infraspinatus muscle originates from the infraspinous fossa, which is a concave depression located on the posterior surface of the scapula (shoulder blade). More specifically, it originates from the medial two-thirds of the fossa, as well as from the fascia covering the muscle. The infraspinatus muscle is one of the four muscles of the ...This tutorial covers the anatomy of the triceps brachii: heads of the triceps, origins, insertions and innervation. Quiz yourself on the muscles of the arm o...In a lever system, the lever is the. bone. Which of the following muscles is named using a directional term? vastus lateralis. Which of the following muscles is named for its shape? pronator quadratus. The neck muscles, with an origin at the sternum and clavicle, and an insertion at the mastoid process of the temporal bone, are the ...What does the infraspinatus do? The infraspinatus muscle's action on the shoulder is primarily through its function as a rotator cuff muscle providing glenohumeral stability. The rotator cuff applies compression upon the head of the humerus that allows for the stabilization of the humeral head during shoulder abduction.It provides shoulder joint stability and, along with the teres minor muscle, externally rotates the arm at the shoulder. It is innervated by the suprascapular nerve, has its origin in the …The infraspinatus muscle is included in the _____ muscles. rotator cuff. The latissimus dorsi inserts _____. on the intertubercular groove of the humerus. One of the actions of the latissimus dorsi muscle is to _____. adduct the arm. The subscapularis muscle inserts on the _____. lesser tubercle of the humerusHere is a simple stretching exercise that can help to stretch the infraspinatus muscle: Stand with your feet shoulder-width apart and your arms by your sides. Place your left hand on your right elbow, and gently press your right arm across your body towards the left side. Hold the stretch for 30 seconds, then release and repeat on the other side.The infraspinatus tendon inserts on the: greater tubercle. Which ligament protects the humeral head from direct trauma? coracoacromial ligament. What ligament in the elbow attaches to the annular ligament? radial collateral. Which of the following muscles is located in the posterior muscle group of the elbow?The insertion (most proximal point of attachment) is the lesser tubercle of the humerus. The subscapularis is the only muscle of the rotator cuff that inserts at the lesser tubercle.Infraspinatus is the second most likely of the rotator cuff muscles to get injured after the supraspinatus. A tear of the infraspinatus could be the result of either an acute or chronic movement. Baseball pitchers classically tear the infraspinatus muscle. It's not the acceleration of throwing the ball as much as it is the eccentric control ...What Does the Subscapularis Do? There are a couple of different actions of the subscapularis muscle. These actions include: ... Infraspinatus Muscle: Action, Insertion & Origin Teres Minor Muscle ...The prefix sarco-means "flesh." The prefix myo-means "muscle." The prefix epi-means "above," "upon" or "over." The prefix endo-means "within" or "inner." The prefix peri-means "around." The part of a muscle fiber that contracts is called a/an myofibril. The connective tissue covering on the outside of a whole muscle is the epimysium. The connective …The supraspinatus and infraspinatus tendons, rotator interval, ... angulation is necessary to confirm position and reduce anisotropy because the tendon curves markedly as it passes to insert into the radial tuberosity. For this reason, longitudinal imaging of a normal tendon can be difficult and is made easier when the axial position is ...The suprascapular nerve is the only branch of the upper trunk (C5 and C6) of the brachial plexus, supplying the supraspinatus and infraspinatus muscles and sensation to the acromioclavicular and glenohumeral joints.. Gross anatomy Origin. The suprascapular nerve arises from the upper trunk of the brachial plexus, which is formed …Rotator cuff tears can expand over time, especially with repetitive use or reinjury. Signs your rotator cuff tear has grown larger include worsening pain, and diminished range of motion and strength in the affected arm. Surgery is recommended for patients with persistent pain or weakness that won't respond to non-surgical therapies.Teres Minor is a narrow muscle which lies below infraspinatus, above teres major and triceps brachii, and deep to deltoid. ... Insertion [edit | edit source] The upper fibres end in a tendon which inserts into the inferior facet of the greater tubercle of the humerus. The lower fibres insert into the humerus directly below the inferior facet of ...It inserts on the greater and lesser tubercle of humerus. Its action is to extend the shoulder. The infraspinatus originates on the infraspinatus fossa, and inserts on the greater tubercle of humerus. Its action is to abduct the forearm. Importantly the supraspinatus and infraspinatus muscle play an important role in lateral stabilization of theThe infraspinatus muscle functions by externally rotating the humerus. The teres minor muscle is positioned immediately inferior to infraspinatus, originating at the inferior aspect of the dorsal scapula at the lateral border of the scapula. The teres minor inserts on the greater tubercle of the humerus below the infraspinatus.1 jul 2007 ... ... insertion site) or posterior (infraspinatus insertion site) on ... We did not subcategorize cysts as located at either (a) the osseous insertion ...MRI. The long head biceps tendon can be readily seen on MRI of the shoulder as a hypointense string-like structure encircling the humeral head. It can be affected by the magic angle effect especially in the curve as it encircles the humeral head and enters the bicipital groove. Moreover, MRI can depict most biceps tendon pathologies except for ...a bursal-sided rim rent tear of the footprint, most commonly found at the tendon insertion of the supraspinatus tendon is called reverse-PASTA lesion. a bursal-sided partial-thickness tear with intratendinous extension should be described as such since delamination hamper the healing potential of the tendon 1.The rotator cuff contains four muscles: Supraspinatus controls internal rotation and lifting of the arm. Infraspinatus allows you to externally rotate your arm in the shoulder socket. Teres minor is a small muscle that helps rotate your arm. Subscapularis controls arm abduction (holding your arm out straight, away from your body).Back muscles. The muscles of the back are a group of strong, paired muscles that lie on the posterior aspect of the trunk. They provide movements of the spine, stability to the trunk, as well as the coordination between the movements of the limbs and trunk. The back muscles are divided into two large groups: The extrinsic (superficial) back muscles, which lie most superficially on the back.Study with Quizlet and memorize flashcards containing terms like name all the muscles that act on the pectoral girdle/"fix the scapula and identify them as posterior or anterior, name the rotator cuff muscles, name all the muscles that move the glenohumeral joint (11) and more.Study with Quizlet and memorize flashcards containing terms like What is the pectoral girdle designed to do?, Name the two groups in the pectoral girdle., Name the components of the dorsal groups. and more. The shoulder joint, also known as the glenohumeral joint, is a ball and socket joint with the most extensive range of motion in the human body. The shoulder muscles have a wide range of functions, including abduction, adduction, flexion, extension, internal and external rotation.[1] The central bony structure of the shoulder is the scapula, where …Summary The infraspinatus is one of four muscles that make up the rotator cuff, which helps your arm and shoulder move and stay stable. Your infraspinatus is in the back of your shoulder. It...The supraspinatus and infraspinatus tendons, rotator interval, ... angulation is necessary to confirm position and reduce anisotropy because the tendon curves markedly as it passes to insert into the radial tuberosity. For this reason, longitudinal imaging of a normal tendon can be difficult and is made easier when the axial position is ...At 6 months post-operatively, the average pain score decreased from 6.2 to 1.7 in patients with articular tears and from 7.1 to 0.9 in patients with bursal tears. Although pain relief and ...Innervation of Teres Major: Lower subscapular nerve. C5, C6, and C7. Teres major is a thick and ovoid muscle in the upper arm. Despite their similar names, Teres major has different actions and innervation from the Teres minor. It's mainly responsible for the medial rotation of the arm and it also contributes to static posture and arm-swinging.The teres minor muscle is sometimes fused with the infraspinatus. It attaches medially to the dorsal surface of the scapula just below the infraspinatus and inserts laterally into the greater tubercle of the humerus. (See Figure 6-23A .) It is innervated by the axillary nerve through the posterior cord from C5 and C6 spinal nerves.Massive and retracted tears of the supraspinatus and infraspinatus tendons of the rotator cuff are associated with great pain and disability and may be considered "non-repairable," depending on the extent of injury and the experience of the treating clinician. ... At least 2 or 3 margin convergence sutures are placed before anchor insertion ...Push your arm outwards away from your body, into the wall. Keep your elbow tucked into your side as you perform the movement. This will cause a contraction of the shoulder muscles. Hold the contraction and relax. Repeat as required. General information A thick, triangular muscle, infraspinatus is one of the four rotator cuff muscles, along with ...Study with Quizlet and memorize flashcards containing terms like The biceps brachii and coracobrachialis muscles share what common attachment site? a. deltoid tuberosity b. lesser tubercle c. greater tubercle d. coracoid process, A "winged scapula" often indicates a weakness in which muscle? a. Rhomboids b. Trapezius c. Serratus Anterior d. Infraspinatus, Which part of the scapula serves as an ...teres minor insertion at the inferior facet of the greater tubercle; subscapularis insertion anteriorly and proximally on the lesser tubercle; There is a significant overlapping zone of muscle/tendon units with interweaving fibers, especially between the posterior supraspinatus and anterior infraspinatus tendons 6.Its insertion is on the humerus, specifically on the inferior facet on the posterior surface of the greater tubercle of the humerus (inferior facet on the posterior surface of the greater tubercle of the humerus (inferior to insertion of the infraspinatus). It has the same action as he infraspinatus muscle.The teres minor is a narrow, intrinsic shoulder muscle that extends from the lateral border of the scapula to the greater tubercle (or tuberosity) of the humerus.[1] It contributes to the “rotator cuff,” a capsule of muscles and tendons that collectively stabilize the glenohumeral joint. The teres minor is responsible for lateral, or external, rotation of the arm at the shoulder.[2][3]teres minor insertion at the inferior facet of the greater tubercle; subscapularis insertion anteriorly and proximally on the lesser tubercle; There is a significant overlapping zone of muscle/tendon units with interweaving fibers, especially between the posterior supraspinatus and anterior infraspinatus tendons 6.The subscapularis muscle is part of the rotator cuff. It provides shoulder joint stability along with the supraspinatus, infraspinatus, and teres minor muscle (Fig. 35.2 ). The subscapularis muscle medially rotates the arm at the shoulder and is innervated by branches of the posterior cord of the brachial plexus and the upper and lower ...Start studying Exam 1 - Canine MS. Learn vocabulary, terms, and more with flashcards, games, and other study tools.Massive and retracted tears of the supraspinatus and infraspinatus tendons of the rotator cuff are associated with great pain and disability and may be considered “non-repairable,” depending on the extent of injury and the experience of the treating clinician. The technique of anatomic vector repair of the rotator cuff is a surgical treatment method …The subscapularis muscle is a large and powerful triangle-shaped muscle originating at the subscapular fossa and inserting at the lesser tubercle of the humerus. The muscle derives its name from its orientation under the scapula: sub (under) scapula (wing bone). The subscapularis is one of the four muscles which compose the rotator cuff apparatus. The other three are the supraspinatus ...To insert a tick symbol in a Microsoft program, such as Excel, Outlook, Word, Publisher or OneNote, click the Symbol button. Choose Wingdings in the Font drop-down menu, and scroll to the check mark symbol.Study with Quizlet and memorize flashcards containing terms like The gastrocnemius muscle of the calf causes plantar flexion when it contracts. The joint works as a second-class lever. This is useful because second-class levers, The biceps brachii acts as a third-class lever, pulling on the radius to move the hand a long distance compared to how far the muscle shortens. To get the most ...Back muscles. The muscles of the back are a group of strong, paired muscles that lie on the posterior aspect of the trunk. They provide movements of the spine, stability to the trunk, as well as the coordination between the movements of the limbs and trunk. The back muscles are divided into two large groups: The extrinsic (superficial) back muscles, which lie most superficially on the back.Deep is towards or at the body surface. false. A ______________ is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and create stability. ligament. A _________ is a tough band of fibrous connective tissue that connects muscle to bone, or muscle to muscle and is designed to withstand tension.The subscapularis muscle is a large and powerful triangle-shaped muscle originating at the subscapular fossa and inserting at the lesser tubercle of the humerus. The muscle derives its name from its orientation under the scapula: sub (under) scapula (wing bone). The subscapularis is one of the four muscles which compose the rotator cuff apparatus. The other three are the supraspinatus ...Nov 14, 2021 · teres minor insertion at the inferior facet of the greater tubercle; subscapularis insertion anteriorly and proximally on the lesser tubercle; There is a significant overlapping zone of muscle/tendon units with interweaving fibers, especially between the posterior supraspinatus and anterior infraspinatus tendons 6. The latissimus dorsi muscle (AKA: 'the lats muscle' or 'the lats') is the widest muscle in the human body. It is relatively thin and covers almost all back muscles at the posterior trunk, except the trapezius . Along with the levator scapulae, trapezius and rhomboid muscles, the latissimus dorsi belongs to the superficial layer of the extrinsic ...The shape of the infraspinatus muscle was approximated to a tri-axial spheroid, making it possible to calculate the muscle volume (V) from three diameters (A, B, and C) using the formula V = π/6*ABC.The anteroposterior diameter (A) was estimated by measuring the widest portion of the muscle belly seen in the axial view (Fig. 3).The craniocaudal diameter (B) was measured in the sagittal view ...infraspinatus: [TA] intrinsic (scapulohumeral) muscle of shoulder joint, the tendon of which contributes to the formation of the rotator cuff; origin , infraspinous fossa of scapula; insertion , middle facet of greater tubercle of humerus; action , extends arm and rotates it laterally; its tonic contraction helps to hold the head of the ...LT provided better abduction and external rotation moment arms when transferred to the infraspinatus insertion. LD performed better when transferred to the supraspinatus insertion. Overall, LT transfer showed a biomechanical advantage compared with LD transfer because of stronger abduction moment ar …Rotator Cuff Anatomy Explained. The rotator cuff is a group of four muscles that hold your upper arm in place in your shoulder. It helps you make all the motions of your arm and shoulder. The head ...The suprascapular nerve is the lateral branch of the superior trunk of the brachial plexus . It receives nerve fibers that originate in the nerve roots C5 and C6 (and sometimes C4). The suprascapular nerve is a mixed nerve, meaning that it provides both sensory and motor supply for the suprascapular region. The main function of this nerve is ...The infraspinatus tendon inserts on the: greater tubercle. Which ligament protects the humeral head from direct trauma? Coracoacromial ligament. What ligament in the elbow attaches to the annular ligament? Radial collateral. Which of the following muscles is located in the posterior muscle group of the elbow?The lower fibers of the muscle insert directly into the humerus, just below the greater tubercle. The teres minor lies inferior to the infraspinatus and superior to the teres major; all three muscles have a similar oblique orientation. In anatomical position, the long head of the triceps brachii muscle is oriented perpendicular to the teres ...The Infraspinatus muscle is one of the four muscles that make up the rotator cuff, the others being: supraspinatus, teres minor and subscapularis. origin: infraspinous fossa of the scapula. insertion: middle facet of the greater tubercle of the humerus. innervation: suprascapular nerve (C5-6)[blockquote]The tendon is like a rubber band, and after a tear, the cuff only connects on one end.[/blockquote] About the Rotator Cuff. So the rotator cuff tendon attaches to the…there are four tendons that create the entire rotator cuff: the supraspinatus, the infraspinatus, the subscapularis, and the teres minor.Dr. Bennett Machanic answered. Neurology 54 years experience. Seek an orthopedic surgical opinion. A full-thickness tear may be an indication of a shoulder repair. Created for people with ongoing healthcare needs but benefits everyone. Learn how we can help. Reviewed Oct 26, 2022. Thank. Dr. Frank Kuitems agrees.Patients with an infraspinatus tendon tear will also have pain while sleeping, reaching overhead, working on the computer, and reaching behind. This is sometimes confusing to patients how feel like something is wrong with the deltoid or bicep muscle. This is due to the body’s pain referral patterns. The rotator cuff pain referral pattern is ... Functional Activity. Latissmus dorsi is a climbing muscle. With the arms fixed above the head, it can raise the trunk upwards, together with the help of pectoralis major. It is an important muscle in rowing, swimming (especially during the downstroke) and chopping. The muscle is also active in violent expiration, as it attaches to the ribs.The infraspinatus insertion at the middle facet of the glenoid tubercle allows it to exert a lateral or external rotational force. This force is synergistic with the teres minor, as it inserts on the inferior facet of the glenoid tubercle.The nerve then courses around the scapular spine and passes through the spinoglenoid notch to enter the infraspinatus fossa, where it is a pure motor nerve to the infraspinatus. The presence of an inferior transverse scapular ligament (spinoglenoid ligament) spanning the roof of the spinoglenoid notch is variable [ 3 , 4 ] (Fig. 1A , 1B , 1C ).The infraspinatus fascia is a tough sheet of connective tissue that covers the infraspinatus fossa of the scapula and the muscle within. Muscle fibers originate from the fossa and fascia and then travel laterally to insert on the greater tubercle of the humerus. Frequently the infraspinatus fascia is quickly removed to appreciate the underlying ...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. 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 ...The infraspinous fossa (infraspinatus fossa or infraspinatous fossa) of the scapula is much larger than the supraspinatous fossa; toward its vertebral margin a shallow concavity is seen at its upper part; its center presents a prominent convexity, while near the axillary border is a deep groove which runs from the upper toward the lower part.. The medial two-thirds of the fossa give origin to ...⭐ Infraspinatus Muscle Anatomy ⭐💪 Origin: Infraspinous fossa of the scapula💪 Insertion: Greater tubercle of the humerus💪 Action: Adduction of arm, shoulde...The entire insertion was measured and referenced to the articular surface, biceps groove, and bare area of the humerus. In a separate part of the study, 6 cadavers were decalcified and thin-sliced through the supraspinatus tendon insertion. ... 40 x 20 mm; infraspinatus (IS): 29 x 19 mm; supraspinatus (SS): 23 x 16 mm; and teres minor (TM): 29 ...INFRASPINATUS. ORIGIN. Medial three quarters of infraspinous fossa of scapula and fibrous intermuscular septa. INSERTION. Middle facet of greater tuberosity of humerus and capsule of shoulder joint. ACTION. Laterally rotates arm and stabilizes shoulder joint. NERVE. Suprascapular nerve (C5, 6 ) (from upper trunk)Last modified: 14 November 2022. The infraspinatus muscle is a thick triangular shaped muscle which arises from the infraspinous fossa below the spine of the scapula. It forms a tendon which inserts on the middle …The supraspinatus, infraspinatus, teres minor, and subscapularis make up the. rotator cuff. the "swimming" muscle. latissimus dorsi. attachment between limbs and the trunk. girdle. shoulder girdle = clavicle + scapula. pectoral girdle. S-shaped bone with medial and lateral end. Infraspinatus. INFRASPINATUS. ORIGIN. Medial three quarters of infraspinous fossa of scapula and fibrous intermuscular septa. INSERTION. Middle facet of greater tuberosity of humerus and capsule of shoulder joint. ACTION. Laterally rotates arm and stabilizes shoulder joint.Patients with an infraspinatus tendon tear will also have pain while sleeping, reaching overhead, working on the computer, and reaching behind. This is sometimes confusing to patients how feel like something is wrong with the deltoid or bicep muscle. This is due to the body’s pain referral patterns. The rotator cuff pain referral pattern is ... The spine of the scapula separates the supraspinatus muscle from the infraspinatus muscle, which originates below the spine. Subscapularis Muscle The subscapularis is a large triangular muscle which fills the subscapular fossa and inserts into the lesser tubercle of the humerus and the front of the capsule of the shoulder-joint.The infraspinatus fascia is a tough sheet of connective tissue that covers the infraspinatus fossa of the scapula and the muscle within. Muscle fibers originate from the fossa and fascia and then travel laterally to insert on the greater tubercle of the humerus. Frequently the infraspinatus fascia is quickly removed to appreciate the underlying ...The infraspinatus muscle is included in the _____ muscles. rotator cuff. The latissimus dorsi inserts _____. on the intertubercular groove of the humerus. One of the actions of the latissimus dorsi muscle is to _____. adduct the arm. The subscapularis muscle inserts on the _____. lesser tubercle of the humerusTibialis posterior is hidden from view by the large, superficial muscles of the leg; gastrocnemius and soleus. This muscle crosses the ankle joint to insert on the plantar surface of the foot. As a result, it helps with plantar flexion of the foot at the ankle joint. It is also a synergist of tibialis anterior in inversion of the foot.The infraspinatus muscle occupies the infraspinous fossa, and crosses the lateral part of shoulder joint ot the roughened area of the greater tubercle of humerus. It acts as a lateral collateral ligament of the shoulder joint.Origin: Infraspinous fossa, scapular spine and the caudal border of the scapula.Insertion: Distal to the greater tubercle of the humerus.Action: Outward rotator and ...Where does the infraspinatus insert? Middle facet of the greater tubercle of the humerus. What nerve innervates the infraspinatus? Suprascapular nerve (C4-C6) The infraspinatus muscle occupies the infraspinous fossa, and crosses the lateral part of shoulder joint ot the roughened area of the greater tubercle of humerus. It acts as a lateral collateral ligament of the shoulder joint.Origin: Infraspinous fossa, scapular spine and the caudal border of the scapula.Insertion: Distal to the greater tubercle of the humerus.Action: Outward rotator and ... The infraspinatus was also completely torn from its insertion (not shown). (5B) An axial fat-suppressed proton density-weighted image at the level of the inferior facet of the greater tuberosity reveals an intact teres minor tendon insertion (arrow). The posterior capsule is lax and torn at the humeral attachment (arrowhead).Terms in this set (77) What are the intrinsic shoulder muscles that insert on the humerus? Deltoid, Rotator Cuff: (Supraspinatus, Infraspinatus, Teres Minor, Subscapularis), and Teres Major. Muscles that cause movement to the humerus must cross the shoulder and _______ on the humerus. Insert.Deep is towards or at the body surface. false. A ______________ is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and create stability. ligament. A _________ is a tough band of fibrous connective tissue that connects muscle to bone, or muscle to muscle and is designed to withstand tension.It is separated from the teres minor and infraspinatus by the scapula's spine. The supraspinatus muscle is contained within a groove, or fossa, known as the supraspinous fossa. The supraspinatus ...What type of rotation does infraspinatus create on the humerus? As a part of the rotator cuff muscles, the main function of infraspinatus muscle is external rotation of the humerus, as well as stabilization of the glenohumeral, or shoulder joint. Where does the infraspinatus insert quizlet?It inserts on the medial lip of the intertubercular sulcus of the humerus. How do the teres major and latissimus dorsi muscles move the shoulder? act synergistically to extend the shoulder. The prime movers of shoulder adduction, the Pectoralis major and coracobrachialis, are opposed by the shoulder ______. abductors. What is the origin and insertion of infraspinatus? origin: infraspinous fossa of scapula insertion: posteriorly on greater tubercle of humerus. ... What do infraspinatus and teres minor require adequate strength for? eccentric slowing down of the arm from high velocity internal rotation activities (pitching, serving)The teres minor muscle is sometimes fused with the infraspinatus. It attaches medially to the dorsal surface of the scapula just below the infraspinatus and inserts laterally into the greater tubercle of the humerus. (See Figure 6-23A .) It is innervated by the axillary nerve through the posterior cord from C5 and C6 spinal nerves.The supraspinatus tendon (SST), the most important component of the rotator cuff, lies along the superior aspect of the humeral head passing beneath the coracoacromial arch. The arch is made up of a bony component posteriorly, the acromion, and a soft tissue component anteriorly, the coracoacromial ligament.Calcium buildup in this area can restrict the range of motion in your arm, as well as cause pain and discomfort. Calcific tendonitis is one of the most common causes of shoulder pain. You're ...Clinically Relevant Anatomy. The infraspinatus muscle, Massive and retracted tears of the supraspinatus and infraspinatus tendons of, The infraspinatus arises from the infraspinous fossa, passes over the humeral head and in, Rotator Cuff Anatomy Explained. The rotator cuff is a group, Terms in this set (77) What are the intrinsic shoulder muscles that , Study Infraspinatus flashcards. Create flashcards for FREE and quiz yourself with an interactive flipper., 47) Where does infraspinatus insert? 47) A) coracoid process of the sc, The rotator cuff is what keeps the head of the hum, Nov 18, 2015 · Dr. Ebraheim’s educational animated video descri, The rotator cuff is the collective term for the four muscles t, Structure Attachments of greater tubercle. The upper, The infraspinatus tendon inserts on the? greater t, Study with Quizlet and memorize flashcards containi, Insertion: (distal attachments) a. Middle part of the gr, The infraspinatus inserts on approximately half of the superior , Normal infraspinatus tendon at its insertion onto the greater tub, Action. The teres minor is a part of a group of shoulder muscles, a bursal-sided rim rent tear of the footprint, most com.