Baseball pitchers classically tear the infraspinatus muscle. If you are working a lot in a bend over position, do lots of desk work or with your arms over your head, you are prone to develop problems in your. The infraspinatus is a thick and triangular muscle. Intraosseous calcifying tendinitis of the infraspinatus.
There is no way to be more specific with you without having the opportunity to examine the shoulder first hand. Humeral insertion of the supraspinatus and infraspinatus reply article pdf available in the journal of bone and joint surgery 91a5. You need to see an orthopod or a elbowshoulder surgeon to get the best advice, as otherwise. This lesson will define this important shoulder muscle and describe its function and. Shoulder motions used during activities like golfing, throwing or overhead lifting may cause repetitive stress within the rotator cuff, leading to irritation, bruising or fraying of the tendon. The mri of the shoulder is not particularly impressive. Pain in the back of the shoulder is often the result of muscle and tendon injuries.
Similarly, for transosseous and arthroscopic supraspinatus tendon repairs, images at 5, 30, 60, and 90 n of supraspinatus tendon loads were chosen for evaluation at each joint position for the infraspinatus tendon only. The infraspinatus tendon is located below the supraspinatus tendon in the lower part of the shoulder blade. The four possible tendons that can be affected by tendinosis are the supraspinatus tendon, the infraspinatus tendon, the teres minor tendon and the subscapularis tendon. Calcific tendinitis of the shoulder pubmed central pmc. Infraspinatus tendinosis and teres minor tendinosis. Infraspinatus tendinopathy is a condition in which there is an injury to the infraspinatus tendon as a result of overuse or a direct trauma to the shoulder area. Calcific tendinitis of the shoulder abstract calcific tendinitis of the shoulder is a process involving crystal calcium deposition in the rotator cuff tendons, which mainly affects patients between 30 and 50 years of age.
The function of the infraspinatus tendon is to turn the arm outwards when the elbow is bent perpendicular to the floor. This tendon attaches muscle to bone and is the focus for the pull of the muscle. Supraspinatus tendinopathy occurs commonly from overloading the shoulder with repetitive or heavy weighted activities, especially overhead activities. Mar 31, 2016 infraspinatus tendinosis and teres minor tendinosis march 31, 2016 by john castle this is a common condition seen in both athletes and nonathletes as these muscles tend to be weak, overstretched, and prone to injury. Nsaids have a similar role in the treatment of supraspinatus tendinopathy. The other muscles are the supraspinatus, teres minor, and subscapularis. A tear of the infraspinatus could be the result of either an acute or chronic movement. The infraspinatus muscle has its origin in the infraspinous fossa of the scapula and inserts into the middle facet of the greater tuberosity of the humerus see fig. The infraspinatus is one of four rotator cuff muscles, responsible for keeping the ball in the socket as the shoulder moves.
Laceration of unspecified muscle, fascia and tendon at shoulder and upper arm level, right arm, initial encounter. Although calcific tendinitis most frequently occurs in a single tendon, namely the supraspinatus tendon, involvement of multiple tendons of the rotator cuff may occur. This muscle tendon unit is responsible for the lateral rotation of the shoulder. The infraspinatus muscle plays a very important role in the mobility and stability of the shoulder joint. Know the causes, symptoms, treatment and diagnosis of infraspinatus tendinopathy. The impingement of the supraspinatus tendon leads to supraspinatus tendonitis, common site of the impingement occurs in under the acromion process and over the bursae. As one of the four muscles of the rotator cuff, the main function of the infraspinatus is to externally rotate the humerus and stabilize the shoulder joint. It originates on the back of the scapula shoulder blade and attaches to the. What are the most common injuries to infraspinatus and teres minor.
It is a prime mover in shoulder external rotation and plays important roles in shoulder stability. The infraspinatus tendon, as with our case report, is the second most common site of reported calcific tendinitis, with the subscapularis tendon third. Watch the infraspinatus video, learn how to do the infraspinatus, and then be sure and browse through the infraspinatus workouts on our workout plans page. The shoulder is a ball and socket joint, held in place with ligaments and muscles. Infraspinatus tendinitis atlas of uncommon pain syndromes. Oct 15, 2018 infraspinatus tendinopathy is a condition in which there is an injury to the infraspinatus tendon as a result of overuse or a direct trauma to the shoulder area. Doctor answers on symptoms, diagnosis, treatment, and more. The therapist will apply a medially directed force to the arm while the patient is instructed to resist. Cronicon open access ec orthopaedics integrative case. Infraspinatus muscle an overview sciencedirect topics.
Strain of unspecified muscle, fascia and tendon at shoulder and upper arm level, right arm, initial encounter. Because it has a poor mechanical advantage, the infraspinatus is a relatively weak muscle in most people. While standing, raise an extended arm on the affected side sideways all the way up. Infraspinatus and supraspinatus tendon strain explained using. Infraspinatus tendon y ou use the infraspinatus muscletendon unit in a backhand motion, when you write, open a door, or reach behind you. Humeral insertion of the supraspinatus and infraspinatus reply. Case discussion the infraspinatus tendon is a relatively uncommon site of calcific tendinitis of the shoulder, the supraspinatus tendon being the commonest site for it. Relative contributions of infraspinatus and deltoid during external rotation in healthy shoulders natalie l. Local strains in the repaired supraspinatus tendon could not be evaluated due to tendon buckling at the repair site. As various therapies have not worked, consider seeing an orthopedist who specializes in shoulder issues. Strain of muscles and tendons of the rotator cuff of right shoulder, initial encounter. A change in sport or gym program, or starting a new sport or gym program may also make a person more susceptible to sustaining a supraspinatus injury axis physiotherapy, n. Infraspinatus is the second most likely of the rotator cuff muscles to get injured after the supraspinatus.
Infraspinatus exercises stimulate blood flow, but infraspinatus exercises can also lead to more injury because of strain the excercise motion puts on the shoulder muscles. The infraspinatus muscletendon unit is responsible for lateral rotation of the shoulder. Symptoms of tendinitis and bursitis usually last for only a few days, but may recur or become chronic. The infraspinatus test is used to test for subacromial impingement or rotator cuff tears. Rotator cuff tendonitis rehabilitation protocol impingement is a chronic inflammatory process produced as the rotator cuff muscles supraspinatus, infraspinatus, teres major, and subscapularis and the subdeltoid bursa are pinched against the coracoacromial ligament and the anterior acromion when the arm is raised above 90 degrees. An overview 467 available in 18 patients, three sets in 19, four sets in 11 patients and.
For infraspinatus braces, youre better to buy a coldcure wrap. The essential principle of adhesive scar tissue formation explains how this can happen. Supraspinatus tendinopathy is a common and disabling condition that becomes more prevalent after middle age12 and is a common cause of shoulder pain34. Lets say that as a youth your client tore some of the supraspinatus tendon fibers during a tournament swim.
It is at this insertion that infraspinatus tendinitis most commonly occurs. Infraspinatus muscle trigger points 2 red dots over the scapula in the left image and pain distribution. The patient should be standing, with the arm in a neutral position and the elbow flexed to 90 degrees. Calcific tendinitis and peritendinitis of the infraspinatus. This shoulder conditioning program should be continued for 4 to 6 weeks, unless otherwise specified by your doctor or physical therapist.
The definitive guide to infraspinatus anatomy, exercises. No is important for the volume of collagen synthesis during tendon healing. Relative contributions of infraspinatus and deltoid during. Fibrotic contracture of the infraspinatus muscle is an uncommon cause of shoulder lameness in hunting or working dogs. The infraspinatus muscle is a common pain troublemaker in athletes, musicians and desk workers. Clinical anatomy 1,2 figure 1 clinical presentation. Infraspinatus calcific tendinitis what does the doctor say. Infraspinatus tendinitis can manifest as an acute or chronic painful condition of the shoulder. Its one of the rotator cuff muscles providing the mechanical link between the posterosuperior and anterior parts of the rotator cuff. Electrophysiological and histological studies have indicated infraspinatus contracture to be a primary muscle disorder rather than a neuropathy. Supraspinatus tendonitis is an inflammation of supraspinatus tendon often associated with shoulder impingement syndrome. The muscle covers the lower portion of the scapula beneath the spine of the scapula, and its tendon attaches to the back of the greater tubercle of the humerus at the posterior upper arm.
Each of these muscles not only stabilizes the shoulder joint but also allows for normal biomechanical motion to occur at the glenohumeral joint. This muscle can contain three trigger points, arranged in a triangular pattern within the belly of the muscle. Rotator cuff tendinosis is a noninflammatory degeneration of the collagen fibers of a rotator cuff tendon. If you are working a lot in a bend over position, do lots of desk work or with your arms over your head, you are prone to develop problems in your infraspinatus. Infraspinatus tendinitis is a strain caused to the infraspinatus tendon. Pain back shoulder teres and infraspinatus muscle sioux city. The infraspinatous muscle is one of the four muscles that comprise the rotator cuff. Infraspinatus supporting the shoulder joint subscapularis front of shoulder biceps front of upper arm triceps back of upper arm length of program. Increased blood flow will bring nutrientrich blood to your injured infraspinatus, helping to speed up your recovery. The infraspinatus muscle is innervated by the suprascapular nerve. The infraspinatus tendon has a very large and broad tendon attachment, about a halfinch wide or more depending upon the size of the person. Aug 22, 2011 the major antagonists to the infraspinatus are the subscapularis and pectoralis major muscles, both of which act to medially rotate the arm. Mar 23, 2015 the infraspinatous muscle is one of the four muscles that comprise the rotator cuff. Infraspinatus tendinitis treatment new doctor insights.
There are many symptoms of supraspinatus pain caused by supraspinatus injuries. Several major muscles control how the shoulder moves, including the deltoid, teres minor, teres major, and infraspinatus muscles. On damage, the muscle pulls part of the tendon away from the bone and the attachment point becomes frayed and sore. Murrell 2007 has identified nitric oxide no therapy, administered via a patch, as a possible treatment for supraspinatus tendinopathy. Calcific tendinitis is a form of tendinitis, a disorder characterized by deposits of hydroxyapatite a crystalline calcium phosphate in any tendon of the body, but most commonly in the tendons of the rotator cuff shoulder, causing pain and inflammation. Calcific tendinitis of the shoulder is an acute or chronic painful condition due to the presence of calcific deposits inside or around the tendons of the rotator cuff. In human anatomy, the infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa. While physical activity promotes blood flow, when you have an injury like an infraspinatus tear, you want to avoid most physical activity in order to prevent reinjury.409 476 1196 678 69 74 266 902 291 255 325 220 827 1497 1350 504 959 1402 140 604 565 1249 11 692 1516 161 875 315 1430 605 1155 1317