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Patellar Tendonitis

Causes, Symptoms, Treatments, and Other Resources

What is the Patellar Tendon?

A tendon is a piece of connective tissue that connects muscle to bone. It serves to move the bone or a given joint.  The patellar tendon is a major tendon in the knee.  It is located at the bottom of the kneecap (patella) and stretches down to the shin. The patellar tendon enables you to extend your knee, kick, run, and jump

What is Patellar Tendinitis?

Patellar tendinitis is an irritation and inflammation of the tendon that connects your kneecap (patella) to your shinbone. Patellar tendinitis, also known as jumper’s knee, can affect anyone.  The most common symptom is pain at the shin or lowest part of the kneecap.  Other symptoms include swelling, tenderness, and restriction in motion.  Kneeling or squatting often is quite painful

What are the causes of Patellar Tendonitis?

Patellar tendonitis can be caused by trauma or repetitive stress on your patellar tendon. 

including activities that involve running, jumping, pivoting on one foot for a prolonged period (especially if you are wearing high-heeled shoes), kneeling with excessively bent knees during activities such as gardening or housecleaning.

In sports where there is a lot of jumping and running, such as basketball and volleyball, athletes are more likely to experience patellar tendinitis.

Symptoms of Patellar Tendinitis

You may only feel discomfort in your knee while beginning a physical activity or just after a strenuous workout at first. The pain gets worse over time and begins to limit your ability to play your favorite sports. The pain may be localized on the top portion of your shin or the lowest part of the kneecap. The pain may be worse when you climb stairs, walk, run, or jump. You may also have a burning sensation in the tendon.  If left untreated simple activities such as climbing stairs and getting out of a chair may be difficult.  Knee swelling and restriction in range of motion can occur.

 Read more about the symptoms below:

Anterior Lateral Knee Pain

The knee joint is one of the most complex joints of the human body. The femur, the tibia, patella, and fibula all contribute to this joint. They are held together by a myriad of strong ligaments that stabilize and support the joint. Anterior lateral knee pain is pain that occurs in the anterior and the anterior lateral region of the knee joint. A person may experience this pain front and center, in the outer aspect of the knee, or diffusely throughout the joint. The cause of the pain is some pathology in the anterior and lateral aspect of the knee.

Read More About Anterior Lateral Knee Pain

Bruising in Knee

Bruising in the knee, also known as a knee contusions, is an uncomfortable yet common condition that occurs when you strike your knee with force or a symptom of a knee condition. When the tiny blood vessels are damaged and blood leaks out beneath the skin, causing the typical swelling and red/purple discoloration seen in these injuries, it is termed a bruise or contusion. Although a knee contusion does not usually require medical intervention, you may need to visit your doctor to ensure that you do not have a more significant problem. If you hurt your knee and have swelling/pain that gets worse instead of better…

Read More About Bruising in Knee

Burning Pain on Outside of Knee When Kneeling

There are many possible causes of burning pain on the outside of the knee while kneeling. One possibility is that you may have patellofemoral syndrome, which is a condition that results in pain around the kneecap. This pain can be aggravated by activities such as kneeling or squatting. Other potential causes of this type of pain include iliotibial band syndrome, runners knee, and meniscal tears. If you are experiencing burning pain on the outside of your knee while kneeling, it is important to see a doctor for evaluation. Some of these conditions can be treated with conservative measures such as rest, ice, and physical therapy…

Read More About Burning Pain on Outside of Knee When Kneeling

Knee Hurts When I Bend It and Straighten It

Your knees bend countless times throughout the day. Running up the stairs, down the hall after kids, and getting into the car. You straighten the knee as you walk, descend stairs or get into and out of the car. Bending and straightening the knee are necessary for daily activities. Knee pain with bending or straightening may be a mild, transient irritation or may indicate a more significant problem. Learn more below and avoid further injury and dysfunction. Knee pain can vary significantly depending upon many factors including the actual source of the pain, the severity of the injury, general health, and level of activity…

Read More About Knee Hurts When I Bend It and Straighten It

Knee Locking & Catching

Knees have the ability to bend forward and back, as well as rotate slightly. When a knee is unable to execute these actions, it impairs mobility and the capacity to complete daily chores such as sitting, standing, squatting, or kneeling. A locked knee occurs when a knee cannot be bent or straightened so it gets stuck or feels locked in a certain position for an extended period of time. There are two forms of locked knees: one that is due to inability to move because of an actually physical or mechanical restriction and there is one that feels locked due to the pain involved in moving it. When a person has their knee joint effectively frozen into place and cannot move, this is known as a true locked knee….

Read More About Knee Locking & Catching

Knee Pain

Knee pain can be caused by many factors. Overuse injuries, direct trauma to the knee and arthritis are the most common causes of knee pain. Damage to the knee structures may cause swelling, scar tissue formation (fibrosis), and loss of function of the joint. Pain is often accompanied by difficulty walking, weakness, and instability. When the knee is overused, the thigh and shin bones (femur and tibia), cartilage, or tendons may experience stress. This leads to pain and discomfort as well as stiffness in the knee. Overuse injuries are common among athletes who participate in sports that involve running, jumping…

Read More About Knee Pain

Knee Swelling

Swelling of the knee, also known as water on the knee, is a condition in which fluid collects around the knee joint. Swelling can occur for a variety of reasons and affect patients of any age. Some swelling can be treated with over-the-counter medicines, but persistent and continuous swelling might result in tissue damage, bone softening, and cartilage deterioration. Over-the-counter medicines will assist relieve pain for individuals with a history of osteoarthritis and swelling following physical activity, such as exercise or running. During and after activity, the patient may apply compression sleeves to reduce the inflammation. Ice is another method…

Read More About Knee Swelling

Knee Twitching & Spasms

Knee twitching and or spasms are common occurrences that can be caused by a variety of factors. In most cases, it is not a cause for concern and does not require treatment. However, in some instances, knee twitching may be a sign of a more serious condition. Knee twitching is often accompanied by a feeling of pins and needles or tingling in the knee. It may also be accompanied by a burning sensation. The twitching usually occurs intermittently and lasts for a few seconds. There are a number of things that can cause knee twitching. Some of the most common…

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Treatment Options

Conservative Care

Your first-line treatment options include:

  • RICERest, Icing, Compression, and Elevation
  • Physical therapy

More Extensive Treatment

If conservative treatments aren’t effective, your doctor may recommend other treatment options, such as:

  • Corticosteroid injection. Ultrasound-guided injections of corticosteroids into the sheath surrounding the patellar tendon may help with discomfort. However, these medicines can also damage tendons and make them more prone to rupture.
  • Platelet-rich plasma injection. These injections promote new tissue formation and help the body heal tendon damage.
  • Surgery. If you’re not offered surgery to clean out the patellar tendon after other treatments have failed, your doctor may advise surgical debridement of the tendon in rare circumstances. Small incisions around your knee are sometimes possible for some operations. However, it is advised to use platelet-rich plasma before considering surgery.

A Deeper Dive Into Your Treatment Options

NSAIDs

The other day I was evaluating a patient and reviewing the treatment options for their spine condition.  After discussing prior treatments, we got to the topic of medications taken for pain relief. She explained that she mainly utilized anti-inflammatory (NSAID) medications and then she told me to hold much she takes and has been for many years…..she takes close to 2 grams (2000 milligrams) on a daily basis which equated to about 9-10 capsules of medication per day.  I was shocked, considering she was pre-diabetic and with high blood pressure plus the kicker of it is that her PCP (primary care physician) is ok with this…

Read More About NSAIDs

PRP Knee Injections

PRP stands for Platelet-Rich Plasma. Platelets are blood cells that prevent bleeding. They contain important growth factors that aid in healing. Plasma is the light yellow liquid portion of our blood. So PRP is simply a concentration of a patient’s own platelets that are suspended in plasma and are used to accelerate healing. PRP is NOT stem cell therapy. Regrettably, blood contains few circulating stem cells. Rich sources of stem cells are bone marrow and fat. PRP is rich in growth factors. There are many different types of growth factors with different properties. VEGF is a very important one as it can increase the blood flow to an area.

Read More About PRP Knee Injections

Our Doctors That Can Assist With Patellar Tendonitis

Christopher J. Centeno, MD

Christopher J. Centeno, M.D. is an international expert and specialist in Interventional Orthopedics and the clinical use of bone marrow concentrate in orthopedics. He is board-certified in physical medicine and rehabilitation with a subspecialty of pain medicine through The American Board of Physical Medicine and Rehabilitation. Dr. Centeno is one of the few physicians in the world with extensive experience in the culture expansion of and clinical use of adult bone marrow concentrate to treat orthopedic injuries. His clinic incorporates a variety of revolutionary pain management techniques to bring its broad patient base relief and results. Dr. Centeno treats patients from all over the US who…

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John Schultz, MD

My passion and specialization are in the evaluation and treatment of cervical disc, facet, ligament and nerve pain, including the non-surgical treatment of Craniocervical instability (CCI). I quit a successful career in anesthesia and traditional pain management to pursue and advance the use of PRP and bone marrow concentrate for common orthopedic conditions. I have been a patient with severe pain and know firsthand the limitations of traditional orthopedic surgery. I am a co-founder of the Centeno-Schultz Clinic which was established in 2005. Being active is a central part of my life as I enjoy time skiing, biking, hiking, sailing with my family and 9 grandchildren.

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John Pitts, M.D.

Dr. Pitts is originally from Chicago, IL but is a medical graduate of Vanderbilt School of Medicine in Nashville, TN. After Vanderbilt, he completed a residency in Physical Medicine and Rehabilitation (PM&R) at Emory University in Atlanta, GA. The focus of PM&R is the restoration of function and quality of life. In residency, he gained much experience in musculoskeletal medicine, rehabilitation, spine, and sports medicine along with some regenerative medicine. He also gained significant experience in fluoroscopically guided spinal procedures and peripheral injections. However, Dr. Pitts wanted to broaden his skills and treatment options beyond the current typical standards of care.

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Jason Markle, D.O.

Post-residency, Dr. Markle was selected to the Interventional Orthopedic Fellowship program at the Centeno-Schultz Clinic. During his fellowship, he gained significant experience in the new field of Interventional Orthopedics and regenerative medicine, honing his skills in advanced injection techniques into the spine and joints treating patients with autologous, bone marrow concentrate and platelet solutions. Dr. Markle then accepted a full-time attending physician position at the Centeno-Schultz Clinic, where he both treats patients and trains Interventional Orthopedics fellows. Dr. Markle is an active member of the Interventional Orthopedic Foundation and serves as a course instructor, where he trains physicians from around the world.

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Matthew William Hyzy, D.O.

Doctor Hyzy is Board Certified in Physical Medicine and Rehabilitation (Physiatry) and fellowship-trained in Interventional Orthopedics and Spine. Dr. Hyzy is also clinical faculty at the University of Colorado School of Medicine in the Department of Physical Medicine and Rehabilitation; In addition, Dr. Hyzy is an Adjunct Clinical Assistant Professor at The Rocky Vista University College of Osteopathic Medicine. Dr. Hyzy also maintains an active hospital-based practice at Swedish Medical Center and Sky Ridge Medical Center. He is also recognized and qualified as an expert physician witness for medical-legal cases and Life Care Planning. He is published in the use of autologous solutions including…

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Brandon T. Money, D.O., M.S.

Dr. Money is an Indiana native who now proudly calls Colorado home. He attended medical school at Kansas City University and then returned to Indiana to complete a Physical Medicine and Rehabilitation residency program at Indiana University, where he was trained on non-surgical methods to improve health and function as well as rehabilitative care following trauma, stroke, spinal cord injury, brain injury, etc. Dr. Money has been following the ideology behind Centeno-Schultz Clinic and Regenexx since he was in medical school, as he believed there had to be a better way to care for patients than the status quo. The human body has incredible healing capabilities…

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Other Resources on the Patella Tendon

Free Download: The Knee Owner’s Manual

This e-book by Dr. Chris Centeno examines the knee and its role in the human musculoskeletal system and the body as a whole. The Knee Owner’s Manual provides a series of tests and clearly defined exercises that you can perform on your own to assess and monitor your own knee health. It will allow you to look for trouble spots where your own body may be having difficulty with stability, articulation, symmetry, and neuromuscular function. You’ll be able to see how these deficits in other regions of the body relate to the knee.

The Knee Owner’s Manual also discusses how Regenexx is pioneering the development of interventional orthopedics, a new branch of medicine that employs regenerative biologic therapies such as adult bone marrow concentrate and platelet-rich plasma to help repair and strengthen damaged tissues in other areas of the body.

This is contrasted with invasive knee surgeries, which often remove important tissues or replace the entire knee itself when it becomes damaged. With hyperlinks to more detailed information, related studies, and commentary, this book condenses a vast amount of data, images, and resources into an enjoyable and informative read. This is the first edition of The Knee Owner’s Manual, a companion book to Orthopedics 2.0.

  • ACL Tear Treatment Without Surgery: Our New Publication!

    It all happened so suddenly.  You were running down the field and made a quick cut.  You heard an audible pop followed by searing knee pain and then collapsed to the ground. Your doctor thinks your tore your ACL and has referred you to a surgeon.  What is the Anterior Cruciate Ligament?  What is the … Continued


  • How to Avoid Knee Replacement: A Quickstart Guide

    Your knee pain initially was intermittent and mild.  Unfortunately, It is now constant and debilitating.  Your doctor recommends knee replacement surgery. What is the knee composed of?  What are the most common knee injuries?  What is knee replacement surgery? What are the different types of knee replacements?  What is knee replacement surgery success? What are … Continued


  • How to Read a Knee MRI for Meniscal Tear

    Dr. Chris Centeno discusses how to read a knee MRI for meniscal tears and what you need to know about such tears. Transcript Hi, this is Dr. Centeno. And I’d like to go over today How to Read Your Knee MRI: Focus on the Meniscus. I have a whole series of these and reading a … Continued


  • How Likely Is a Second ACL Tear On the Same Knee?

    Anterior Cruciate Ligament Injuries and Treatments The ACL (anterior cruciate ligament) is an important knee stabilizing ligament. It prevents the tibia from moving too much frontward (anterior translation) and twisting too much (internal rotation).  It is under most stress with landing from a jump, or a planted foot with twisting, and this is how it … Continued


  • How to Read Knee MRI

    Transcript for “How to Read Knee MRI” Hi, this is Dr. Centeno and I’d like to go over how to read knee MRI. I got the idea for this when a friend had a knee injury, got an MRI, was sent home with the CD, and just jumped on the internet to try to figure … Continued


  • Regenexx ACL Repair vs Reconstruction Surgery for Knee ACL

    Regenexx ACL Repair vs Reconstruction Surgery for Knee ACL Today I’d like to highlight a patient named Joe’s story.  Joe is unique in that he has had the non-surgical Regenexx Perc-ACLR procedure which uses your own cells injected via a small needle, and a surgical ACL reconstruction, so he can compare the two. So let’s … Continued


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