Orthopedics Physical Therapy Print Tendonitis: Causes, Symptoms, and Treatment By Laura Inverarity, DO Updated May 12, 2019 More in Orthopedics Physical Therapy Exercises Sprains & Strains Fractures & Broken Bones Orthopedic Surgery Osteoporosis Pediatric Orthopedics Sports Injuries Shoulder & Elbow Hip & Knee Hand & Wrist Leg, Foot & Ankle Assistive Devices & Orthotics Medication & Injections View All Tendonitis (also spelled tendinitis) is an acute condition where the tendons that connect muscle to bone become inflamed. This inflammation can cause pain, loss of mobility in the tendon, and decreased strength in the muscle from which the tendon arises. Tendons are fibrous cords of collagen that serve as flexible anchors in and around the joints of the body. They come in many shapes and sizes, from smalls ones which enable the movements of fingers, to larger ones, like the Achilles tendon, which help us stand or walk. There are many reasons why a tendon can become inflamed and, when it does, it can often be painful. The pain tends to be felt most profoundly at the insertion site where the tendon attaches to the bone. It can also be strongly felt where the muscle and tendon connect. Chronic tendon problems are commonly referred to as tendinosis or tendinopathy. This simply refers to some pathologic condition of the tendon. This condition may cause pain, inflammation, and limited mobility. Illustration by Jessica Olah, Verywell Causes of Tendonitis John Fredele/Getty Images While there are hundreds of tendons throughout the body, only a small handful are affected by tendonitis. These tendons tend to have fewer blood vessels servicing them, and the lack of blood supply hinders their ability to heal after injury. The parts of the tendon most impacted by this effect are called the watershed zones where the blood supply is at its weakest. Tendonitis is most often caused by the overuse of a tendon in the course of work, athletics, or daily activities. It is most often associated with repetitive movements such as that caused by assembly line work or sports like golf or tennis where an action is repeated excessively. Direct injury—such as a blow to the tendon—can also cause tendonitis. Inflammatory disorders, such as rheumatoid arthritis and osteoarthritis, can also give rise to both the sudden (acute) and persistent (chronic) inflammations of tendons. Tendonitis is more commonly seen in people over 40 with the risk and severity of symptoms typically increasing with age. Common Locations of Tendonitis Westend61/Getty Images Tendonitis can happen almost anywhere on the body and is typically classified by its location. Because the condition is associated with the repetitive movement, we tend to see it in people who perform certain tasks by routine or who engage in specific sports activities. Some of the more common types include: Achilles tendonitis, involving the tendon between the calf muscle and heelPatellar tendonitis, sometimes referred to as jumper’s kneesElbow tendonitis, commonly known as tennis elbow or golfer's elbowBiceps tendonitis, involving the tendon between the bicep and shoulderRotator cuff tendonitis, known as pitcher’s shoulder or swimmer’s shoulderWrist tendonitis, sometimes called bowler’s wrist Symptoms and Diagnosis BSIP/UIG/Getty Images Tendonitis is a characterized by the sudden appearance of pain and inflammation and should not be confused with tendinosis in which symptoms are chronic and persistent. In many cases, the appearance of symptoms will be abrupt, often associated with an injury or a period of excessive activity. At other times, the symptoms will appear gradually and worsen over time. The most common features of tendonitis include: Swelling of the tendon, usually with redness and warmthTenderness directly over the tendonPain with the movement of the affected areaA cracking or grating sensation when the joint is movedThe appearance of a lump or bulge on the tendon itselfStiffness due to swelling Diagnosis is typically made with a physical examination. If the cause is not clear or there are co-occurring conditions, the doctor may order additional tests. X-rays and magnetic resonance imaging (MRI) are generally less helpful in making a diagnosis and are really only used if there are concerns about a possible fracture or joint damage. Treatment UpperCut Images/ Getty Images The treatment of tendonitis involves three elements: Restriction of movement of the affected tendonReduction of inflammationRehabilitation of the injured tendon, joint, and muscle which includes regaining normal tendon mobility and tolerance to loading. To achieve this, the injured joint must first be immobilized to relieve any pressure on the afflicted tendon. Ice can be used in the initial days to reduce swelling and pain. Non-steroidal anti-inflammatory drugs, like ibuprofen, may also provide relief. The main objective of treatment is to prevent any movement the can further inflame the condition. Depending on where the tendonitis is, you may need to avoid simple, everyday tasks like driving or typing until symptoms are fully settled. In people with tendinosis or recurrent tendonitis, corticosteroid injections may be used to provide short- to medium-term relief. Overuse should be avoided as it can weaken the tendon over time and increase the risk of rupture. Treatment may be supported by physical therapy to manipulate and massage the affected area. Recovery tends to be faster, often with the recovery of the full range of motion. Fitness for Prevention of Tendonitis UpperCut Images / Getty Images In addition to physical therapy, a structured home fitness program can assist with the avoidance of tendonitis. One technique that seems particularly useful is a form of exercise called eccentric resistance training. During everyday activities, our muscles work by contracting and releasing. The contraction is called a concentric action; the release is an eccentric action. In eccentric resistance training, a muscle is contracted to lift a weight but then slowly released to maintain tension until the muscle is fully extended. This slow, eccentric action allows you build strength in and around the affected joint without placing undue stress on the tendon itself. It is a system commonly used by athletes following a severe injury and has been found to beneficial to older adults who are less likely to be injured. A Word From Verywell Tendonitis can be a painful condition that limits your ability to engage in your normal work or recreational activities. If you suspect you have tendonitis, check in with your physical therapist and get started on treatment right away. Was this page helpful? Thanks for your feedback! Get exercise tips to make your workouts less work and more fun. Email Address Sign Up There was an error. Please try again. Thank you, , for signing up. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources Murtagh, B. and Ihm, J. "Eccentric Training for the Treatment of Tendinopathies." Current Sports Medicine Report. 2013; 12(3):175-181. Scott, A.; Bachman, L.; and Speed, C. "Tendinopathy: Update on Pathophysiology." Journal of Orthopaedic & Sports Physical Therapy. 2015; 45(11):833-841.