Quadriceps Tendonitis

Similarly to patellar tendonitis, quadriceps tendonitis occurs when the quad tendon, which runs from the quad muscle group to the top portion of the kneecap (patella) becomes inflamed.
The quadriceps tendon connects the thigh muscles to the patella (knee cap), and helps straighten the knee. Stress is greatest across the quadriceps tendon when jumping and landing, and excessive stress can damage the tendon. Patients often feel increased symptoms when bending the knee, squatting or walking down stairs. Tendonitis (tendinitis) means “inflammation of the tendon,” but we now know that inflammation is not a common cause of tendon pain.
Most tendon injuries are a result of gradual wear and tear. Stress can result in micro tears over time, and the damage can exceed the rate of repair. Micro-damage over time can result in degenerative tears of the tendon and pain.

Symptoms can include knee pain and often the tendon is stiff in the morning. Patients will often feel increased symptoms when bending the knee, such as when squatting or going down stairs.

Diagnosis is based on detailed history, physical examination, and imaging. During the physical examination, a series of provocative tests may be utilized to further determine presence of injury.
Advanced imaging may be required to confirm diagnosis and determine injury severity. Both magnetic resonance imaging (MRI) and Ultrasound can help effectively identify and assess injury to either tendon or surrounding structures. X-ray can help determine if any bony structures are involved.

Nonsurgical options historically included rest, ice, medication and physical therapy. Imaging, including an MRI or musculoskeletal ultrasound, will often confirm the diagnosis.
In the past when these traditional conservative treatments failed, surgery was recommended. Boston Sports & Biologics now offers alternatives to surgery for chronic tendinopathy including Ultrasound-guided Needle Tenotomy, Shockwave Therapy, and platelet rich plasma (PRP) injections Learn more about these options here.