Knee Infiltrations: Everything You Need to Know

20 de June de 2024

Knee infiltrations are a common treatment to relieve pain and improve joint function in patients with various conditions, such as osteoarthritis or sports injuries. This article will provide you with detailed information about the process, the types of infiltrations available, their benefits and considerations.

What are Knee Injections?

Infiltrations consist of injecting medication directly into the knee joint. These drugs can be anti-inflammatory, anesthetic or biological, and their purpose is to reduce inflammation and pain, facilitating movement.

Types of Infiltrations

1. Corticosteroid infiltrations:

  • Used to reduce inflammation and pain quickly.
  • Indicated for acute outbreaks of joint pain.
  • Effects may last for weeks or months, depending on the patient and the severity of the condition.

Infiltrations with Hyaluronic Acid:

  • They help to lubricate the joint, improving movement and reducing pain.
  • Effective in patients with osteoarthritis.
  • They act as a substitute for synovial fluid, providing a cushioning and lubricating effect.

3. Infiltrations with Platelet Rich Plasma (PRP):

  • Promote regeneration of damaged tissue.
  • Used in cases of sports and degenerative injuries.
  • PRP is obtained from the patient’s own blood, which reduces the risk of adverse reactions.

4. Infiltrations with Stem Cells:

  • Innovative technique that seeks to regenerate damaged cartilage.
  • Still in the study phase, but with promising results.
  • Stem cells have the ability to differentiate into various types of tissues, aiding in joint repair.


The procedure is relatively simple and is performed under sterile conditions. The physician uses a fine needle to inject the medication into the joint, often guided by ultrasound for accuracy. The duration of the procedure is short, and the patient can resume normal activities quickly, although relative rest is recommended during the first 24 hours.

Benefits of Infiltrations

  • Pain Relief: Rapid decrease in joint pain.
  • Improved Function: Increased mobility and functionality of the knee.
  • Few Side Effects: Fewer adverse effects compared to oral treatments.
  • Maintenance of Physical Activity: They allow patients to continue with their daily activities and exercises in a more comfortable way.

Considerations and Risks

Although infiltrations are generally safe, it is important to consider possible side effects such as infections, allergic reactions or temporary increase in pain. It is crucial to perform this procedure under the supervision of a specialist in rheumatology or traumatology.

Pre and Post Infiltration Precautions:

  • Inform the physician of any allergies or existing medical conditions.
  • Avoid intense activities and rest the treated joint.
  • Follow the physician’s instructions on the use of analgesics and specific post-procedure care.


Knee infiltrations are an effective option for managing joint pain and improving function in patients with a variety of conditions. Consult with your physician to determine if this treatment is right for you and to learn more about the options available.

To receive a personalized diagnosis and treatment, visit our Pain Management Unit at Clínica San Román and schedule an appointment with our specialists. Your well-being is our priority.

Contact and Appointments

If you experience knee pain and consider that infiltrations could be a solution for you, do not hesitate to contact our Pain Management Unit at Clínica San Román. Our experts are here to help you regain your quality of life.

Address: Avenida del, Av. de Ramón y Cajal, 1, BAJO, 03001 Alicante

Phone: 965 92 11 56


Schedule your appointment today and discover how infiltrations can help you live pain-free.


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