Tendinitis and Tendinosis treatments – Injections for Chronic Tendinopathy

Ross Hauser, MD  | Caring Medical Regenerative Medicine Clinics, Fort Myers, Florida
Katherine L. Worsnick, MPAS, PA-C  | Caring Medical Regenerative Medicine Clinics, Fort Myers, Florida

You went to your follow up visit with your orthopedist. You were told that you have Tendinopathy or “Tendon problems.” This came as no surprise to you. You know something is wrong. You have pain and sometimes you can barely move. Some of you may be curious as to why your  joint swelling went away. You initially thought this was a good thing and that your tendon was healing. Now you are finding out pain without swelling is not such a good thing and you have progressed to “tendinosis.” You are anxious to get something positive done but this is now turning into a long-term, “I have to live with this problem.”

In this article we will talk and guide you to information and research on various treatment options for various tendinopathies.

Tendinosis, the long-term consequences of non-treatment or ineffective tendon injury

When a patient comes to Caring Medical with joint problems related to sports or active lifestyle or physically demanding job and a diagnosis of one of the various tendinopathy issues described in this article, many of them will have an advanced case. It will either be advanced tendinitis or advanced tendinosis.

  • Tendinitis
    • The initial wear and tear and overuse injuries to tendons usually involve a degree of inflammation. This is the Tendinitis stage. This is where your health care provider will attack your problems with anti-inflammatory medications and possibly cortisone injections.
  • Tendinosis
    • You continue to have pain but not inflammation. In essence your body has given up trying to repair the tendon because you body believes, it is “too far gone.”

The medical community is in debate as to what is a “true tendinitis,” and what is a “true tendinosis.”


This effects your treatment, you have to pay attention and talk to your doctor

The differences between tendinitis and tendinosis are important as it helps guide treatments. Clearly a path of anti-inflammatory treatments would have to be carefully evaluated for effectiveness in tendinosis.

Here is an example that will help you understand the confusion in the medical community and why you need to talk to your doctor about your treatment.

An example with tennis elbow, what is it? “itis” or “osis”?

  • For example, you may have a diagnosis of “tennis elbow.” Tennis elbow is a common name for the more medical term “lateral epicondylitis.
  • Lateral epicondylitis means an inflammation “itis” of the side (lateral) area where the tendon attaches to the bones in the elbow. In this case the humerus, the upper arm bone and the radius, the forearm bone.

Itis” means inflammation and to treat with anti-inflammatories.

Research questions the “tennis elbow” diagnosis: “As orthopedic surgeons, we are besieged by myths that guide our treatment of lateral epicondylitis, or “tennis elbow.””

In 1999, doctors at the Department of Orthopaedic Surgery, Washington University School of Medicine warned about calling “Tennis Elbow,” a problem of inflammation in the Journal of Shoulder and Elbow Surgery:

  • “As orthopaedic surgeons, we are besieged by myths that guide our treatment of lateral epicondylitis, or “tennis elbow.” This extends from the term used to describe the condition to the nonoperative and operative treatments as well. The term epicondylitis suggests an inflammatory cause; however, in all but 1 publication examining pathologic specimens of patients operated on for this condition, no evidence of acute or chronic inflammation is found. Numerous nonoperative modalities have been described for the treatment of lateral tennis elbow. Most are lacking in sound scientific rationale.”(1)

In 2018 the confusion continues. So you go to your health care provider with a history of “outside elbow pain.” What type of treatments might you get? Anti-inflammatory, maybe a cortisone injection. In our opinion, as we will document below, these treatments will make your elbow worse.

Research: “Tendinopathic cells are not responsive to ibuprofen . . . there was no indication that short-term ibuprofen treatment affects gene expression in human chronic tendinopathic tendon or leads to any clear changes in tendon pain or function”

You do not have to be a scientist to understand this research. Ibuprofen does not help tendinosis.

This research came from the University of Copenhagen and was published in the Journal of applied physiology in November 2017 (2).

Highlights of research

  • Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used to treat tendinopathy, but evidence for this treatment is lacking, and little is known regarding effects of NSAIDs on human tendinopathic tendon.
  • This study investigated the effects of NSAID treatment (ibuprofen) on human tendinopathic tendon, with changes in gene expression (generally: Gene expression is your cells talking to each other or signalling each other that they need to heal something) as the primary outcome, and tendon pain, function, and blood flow as secondary outcomes.
  • Noteworthy of this research: “Nonsteroidal anti-inflammatory drugs are widely used in the treatment of tendinopathy, but little is known of the effects of these drugs on tendon tissue. We find that one week of ibuprofen treatment has no effect on gene expression of collagen and related growth factors in adult human tendinopathic tendon in vivo  . . . suggesting that tendinopathic cells are not responsive to ibuprofen.”

Ibuprofen does not stimulate healing in tendinosis

Our discussions with patients helping them to understand their advancing stage tendon injuries

Despite the differences in what a tendinitis and a tendinosis is, most patients come in for our first visit with an MRI film and report and say they have a “tendinitis.” This is probably the more easier of terms for them to understand as it is a term to describe a new onset of pain. But when you look at his or her MRI and read the MRI report we find that this problem of tendinitis has been going on for some time. It has deteriorated into tendinosis. So we ask them:

  • Have you continued to work out or play sports or go to work with your tendon problem?
    • For the worker, they see themselves as having little choice. For the sports minded or physical exercise enthusiast, many patients we see say yes they have. For both groups the anti-inflammatory medication help get them through their workday or workout. Certainly putting ice on the problem are has its benefits.

In the initial phase of a tendon injury, you likely had an inflamed tendon.  Ice and anti-inflammatories will help reduce the swelling and with pain, but at what cost? Long-term tendinosis and continued doctor visits.

  • We find this particularity true in weight lifters. They continue on with their routines looking to increase the size of their bicep muscles for instance. Yet the entire success of their workout is dependent on a healthy bicep tendon. When the bicep tendon is hurt, they have their tendinitis treated with anti-inflammatories and cortisone injections. The exact treatments that will decrease the size of their bicep by damaging the bicep tendon. Then they will get cortisone injection. Then they will come into our office looking for help because the cortisone “wore off,” or is no longer effective. They can no longer train. This happens all the time. Let’s briefly look at the various tendinopathies we see:

Achilles tendon

We see many people with Achilles Tendinopathy. You may be an older active person, maybe you are a sport referee or like to run. Men’s league basketball players often show up with Achilles injuries from “out of no where.” If it is your Achilles tendon that is the problem, please see our article: Achilles Tendinopathy and Achilles tendon partial and full thickness rupture | Surgery and non operative treatment.

Rotator Cuff

We see many people with Swimmer’s shoulder, or supraspinatus tendinopathy, or a rotator cuff tendinopathy diagnosis, they come in knowing that their shoulder hurts, there is a problem with tendons, and they are thinking that somewhere along the line someone, if they have not already, is going to eventually recommend a surgery. Surgery means extended time away from sport or work. Surgery for many, therefore, is not a realistic option. But perhaps the biggest problem is that everywhere this person has been, all the talk is about a single tendon or the rotator cuff as a single unit. It is most probable that no one sat down with this person and said to them, “to heal this tendon problem, we have to heal your whole shoulder.” If it is your Rotator Cuff and you want to learn more about your realistic options, start here: Rotator Cuff Tendinopathy

Is it your knee?

In our clinics we see a lot of knees. Like the rotator cuff people, many of these knees have been diagnosed with a “tendinopathy,” (tendon problems);  a “tendinosis,” (tendon problems without inflammation “osis.”); a “tendinitis,” (tendon problems with “inflammation or “itis.”)

These are some of the tendinopathy problems of the knee:

  • Patellar tendinitis is inflammation of the patellar tendon, which attaches the kneecap to the tibia or shinbone.The patellar tendon helps your muscles extend your knee.
  • Pes anserinus tendinitis, which involves the pes anserinus tendons that lie on the inside and just below the knee joint and prevents the lower leg from twisting outward while running.
  • Popliteus tendinitis
  • Semimembranous tendinitis.

If it is your knee please visit our article discussing the options to Knee Tendinopathy treatments.

Is it your elbow?

We started this conversation above. We see a lot of people with elbow problems, they have been diagnosed with “Tennis Elbow” and “Golfer’s Elbow.” A history of cortisone and physical therapy has now made their situation worse. If this sounds like this is happening to you, please see our article: Comprehensive Prolotherapy and PRP tennis elbow and elbow instability injections.

Is it your “Glutes?”

The “glutes” of the hip, that is the gluteus maximus and the smaller gluteus medius, are powerful muscles of the hip and pelvic region. Connecting theses powerful muscles are powerful tendons. When these tendons are damaged patients are diagnosed with a problem of hip or pelvic tendinopathy. Problems that can bring with it significant pain and disability. If this is you, you can get more information in our article Gluteus Medius Tendinopathy Injections.

Your continued tendon problems are so challenging that an international team of researchers have published findings on treatment guidelines: Date: December 2018

This is what the surgical group: The European Society of Sports Traumatology Knee Surgery and Arthroscopy, published in their Journal of experimental orthopaedics.(3) December 2018. Remember above what the surgeons wrote in 1999. Here we are 19 years later.

  • The treatment of painful chronic tendinopathy is challenging.
  • Patients and health care providers have a choice to treat problems with multiple non-invasive (non-surgery) and tendon-invasive (surgery) methods.
  • When traditional non-invasive treatments fail, the injections of platelet-rich plasma autologous blood or cortisone have become increasingly favored. However, there is little scientific evidence from human studies supporting injection treatment.
  • As the last resort, open or arthroscopic surgery to the tendon, or surgery to the tendon and surrounding soft tissue are employed even though these also show varying results.

In the opening of this study, the surgeons acknowledge that helping people with tendinopthy is challenging. Non-surgical methods do not work that well, see the research they cite below of a 25% failure rate, and surgeries do not typically work that well. Cortisone is usually not supported and the surgeons question the benefit of PRP injections. Which we will discuss at length below.

So what are the treatments and what does the research say?


“The great incidence of tendon injuries as the failure rate of up to 25% (of the available conservative treatments) has made alternative biological approaches (PRP and stem cell therapy among them) “most interesting.”

The above quote is from research published in the journal BMC musculoskeletal disorders (4). A fascinating part of this research is the investigators suggesting that: “The study of the microenvironment of tendinopathy is a key factor in improving tendon healing.” What is the microenvironment of tendinopathy? INFLAMMATION

Listen to what the researchers suggest, it will give you an understanding of how to heal by getting rid of anti-inflammatory medications.

  • “An alternative anti-inflammatory and immunomodulatory (suppressing the immune response, i.e., inflammation) approach that replaces the traditional anti-inflammatory modalities (i.e. NSAIDs) may provide another potential opportunity in the treatment of chronic tendinopathies.”

The research shows that even in cases of tendinosis, where it is thought that no inflammation is occurring, there is still inflammatory cellular activity. IN OTHER WORDS – your tendon is waiting for inflammation to start up again and do its repair and there is a “skeleton crew,” of cellular communicators waiting for signals. Waiting for signals as we will see below is an important part of the tendons rebooting its healing cycle.

Rebooting the inflammatory process in tendon healing – one way to fix chronic tendinopathy

Rebooting the inflammatory process means getting blood flow and healing factors back into the damaged area. There are many treatments that can do this.

Before we get into these treatments a quick word about ice packs. Some people become “addicted” to ice because it helps numb the area and reduce pain in the short-term. Icing make pain worse in the long run. We cover this at length in our article Rest ice compression elevation | Rice Therapy and Price Therapy

 Extracorporeal shock wave therapy

Some people explore Extracorporeal shock wave therapy and find this treatment effective. Shock wave therapy puts pressure on the damaged area, it is an electric massage. It does bring circulation and healing factors to the damaged tendon. We find this to be a good supportive treatment for some, but not a primary treatment as tendon damage may be more significant than the treatment can realistically help.

Physical therapy and light exercise

Movement brings circulation and healing factors to the site of injury. The careful thing of course is that the movement does not make the injury worse. We also find this to be a good supportive treatment for some, but not a primary treatment as tendon damage may be more significant than the treatment can realistically help.

The evidence that pro-inflammatory treatments work better than anti-inflammatory treatments

Below is a pro-inflammatory treatment demonstration. It is injections of detxrose Prolotherapy. This simple solution brings pro-inflammatory factors into the damaged area to stimulate healing. The research is below.

The best way in our opinion to show you how pro-inflammatory treatments heal where anti-inflammatory treatments do not heal is in the research making a direct comparison.

A multi-national team of researchers including those from Rutgers University, Virginia College of Osteopathic Medicine, and the University Regensburg Medical Centre in Germany tested the effects of Prolotherapy on tenocytes repair (tendon cells). Published in the journal Clinical orthopaedics and related research(5) what the team was looking for was how did Prolotherapy injections change the immune system’s response to a difficult to teal tendon injury.

These are the highlights:

  • Prolotherapy injections changed the cellular metabolic activity to a healing, regenerative environment in the tendon cells.
  • Prolotherapy activated RNA expression. The healing phase of soft tissue injury starts spontaneously after the tendon injury. Healing occurs  in three phases: inflammation, proliferation and maturation. RNA expression is the communication changes in genes (remember the gene expression from above)  that coordinates the beginning and ending of these three cycles of healing and injury repair process.
  • Activated Protein secretion – the process of rebuilding. For a fascinating look at this subject please see our article on Extracellular matrix in osteoarthritis and joint healing.
  • Cell migration. The ability of healing cells to get to the site of an injury, and the denial of damaging inflammatory factors from reaching the same site.

In our own published research, we reported in the Clinical medicine insights. Arthritis and musculoskeletal disorders, (6) we reported that the consensus is growing regarding the effectiveness of dextrose Prolotherapy as an alternative to surgery for patients with chronic tendinopathy who have persistent pain despite appropriate rehabilitative exercise.

Platelet Rich Plasma therapy and Prolotherapy

Platelet Rich Plasma therapy (PRP) can be added to the traditional Prolotherapy solution to expedite the process, in specific cases.

  • PRP treatment re-introduces your own concentrated blood platelets into areas of chronic tendinopathy
  • Your blood platelets contain growth and healing factors. When concentrated through simple centrifuging, your blood plasma becomes “rich” in healing factors, thus the name Platelet RICH plasma.
  • The procedure and preparation of therapeutic doses of growth factors consist of an autologous blood collection (blood from the patient), plasma separation (blood is centrifuged), and application of the plasma rich in growth factors (injecting the plasma into the area.)
  • In our clinics, patients are generally seen every 4-6 weeks. Typically three to six visits are necessary per area.

Below is a pro-inflammatory treatment demonstration of Prolotherapy combined with PRP treatments. This simple treatment brings pro-inflammatory factors into the damaged area to stimulate healing. The research is below.

Platelet Rich Plasma vs Cortisone. Pro-inflammatory treatments vs anti-inflammatory treatments

What we see in this research is a straight out comparison of PRP treatments with cortisone

  • Patients with chronic gluteal tendinopathy achieved greater clinical improvement at 12 weeks when treated with a single PRP injection than those treated with a single corticosteroid injection.(7)
  • PRP improved pain and function patients with chronic lateral epicondylitis (Tennis elbow), who had not had relief with cortisone injection.(8)
  • Journal of clinical and diagnostic research, a 2015 study reveals PRP as a superior treatment option to cortisone in cases of tennis elbow.(9)
  • Doctors in Pakistan have shown the effectiveness of platelets rich plasma versus corticosteroids or the “tennis elbow steroid injection.” The doctors looked at 102 patients in the study and divided them into two groups of 51(50%) each.
    • In the patients in the cortisone group 53% improvement
    • In the patients in the PRP group 82%
    • Their conclusion: PRP is an effective alternative to corticosteroid in the treatment of lateral epicondylitis (tennis elbow).(10)
  • International orthopaedics (2012) Compared with cortisone injections, PRP showed significant clinical benefit for patellar tendinopathy. Additionally, the PRP benefit worked best when the patient did not have a PREVIOUS CORTISONE INJECTION.(11)

In Summary

In our 25 plus years of helping people with tendon injuries, we have found Prolotherapy and PRP treatments to be effective in helping their goals of getting back to sport of work.

Do you have a question about tendon damage and repair?  Get help and information from Caring Medical

Prolotherapy Specialists Tendinitis and Tendinosis treatments - Injections for Chronic Tendinopathy

Danielle Steilen-Matias, PA-C | Katherine Worsnick, PA-C | Ross Hauser, MD | David Woznica, MD

1 Boyer MI. Lateral tennis elbow:” Is there any science out there?.”Journal of Shoulder and Elbow Surgery. 1999;8(5):481-91. [Google Scholar]
2 Heinemeier KM, Øhlenschlæger TF, Mikkelsen UR, Sønder F, Schjerling P, Svensson RB, Kjaer M. Effects of anti-inflammatory (NSAID) treatment on human tendinopathic tissue. Journal of Applied Physiology. 2017 Aug 31;123(5):1397-405. [Google Scholar]
3 Abat F, Alfredson H, Cucchiarini M, Madry H, Marmotti A, Mouton C, Oliveira JM, Pereira H, Peretti GM, Spang C, Stephen J. Current trends in tendinopathy: consensus of the ESSKA basic science committee. Part II: treatment options. Journal of experimental orthopaedics. 2018 Dec 1;5(1):38. [Google Scholar]
4 Lohrer H, David S, Nauck T. Surgical treatment for achilles tendinopathy – a systematic review. BMC Musculoskelet Disord. 2016;17:207. Published 2016 May 10. doi:10.1186/s12891-016-1061-4 [Google Scholar]
5 Ekwueme EC, Mohiuddin M, Yarborough JA, Brolinson PG, Docheva D, Fernandes HA, Freeman JW. Prolotherapy Induces an Inflammatory Response in Human Tenocytes In Vitro. Clinical Orthopaedics and Related Research®. 2017 Apr 27:1-1. [Google Scholar]
6 Hauser RA, Lackner JB, Steilen-Matias D, Harris DK. A Systematic Review of Dextrose Prolotherapy for Chronic Musculoskeletal Pain. Clin Med Insights Arthritis Musculoskelet Disord. 2016;9:139-59. Published 2016 Jul 7. doi:10.4137/CMAMD.S39160 [Google Scholar]
7 Fitzpatrick J, Bulsara MK, O’Donnell J, McCrory PR, Zheng MH. The Effectiveness of Platelet-Rich Plasma Injections in Gluteal Tendinopathy: A Randomized, Double-Blind Controlled Trial Comparing a Single Platelet-Rich Plasma Injection With a Single Corticosteroid Injection. The American Journal of Sports Medicine. 2017:0363546517745525.  [Google Scholar]
8. Massy-Westropp N, Simmonds S, Caragianis S, Potter A. Autologous blood injection and wrist immobilisation for chronic lateral epicondylitis. Adv Orthop. 2012;2012:387829. doi: 10.1155/2012/387829. Epub 2012 Dec 4.  [Google Scholar]
Yadav R, Kothari SY, Borah D.  Comparison of Local Injection of Platelet Rich Plasma and Corticosteroidsin the Treatment of Lateral Epicondylitis of Humerus. J Clin Diagn Res. 2015 Jul;9(7):RC05-7. doi: 10.7860/JCDR/2015/14087.6213. Epub 2015 Jul 1.  [Google Scholar]
10 Khaliq A, Khan I, Inam M, Saeed M, Khan H, Iqbal MJ. Effectiveness of platelets rich plasma versus corticosteroids in lateral epicondylitis. J Pak Med Assoc. 2015 Nov;65(11 Suppl 3):S100-4. [Google Scholar]
11 Gosens T, Den Oudsten BL, Fievez E, van ‘t Spijker P, Fievez A. Pain and activity levels before and after platelet-rich plasma injection treatment of patellar tendinopathy: a prospective cohort study and the influence of previous treatments. Int Orthop. 2012 Sep;36(9):1941-6. doi: 10.1007/s00264-012-1540-7. Epub 2012 Apr 27 [Google Scholar]


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