Ultrasound-Guided Suprapatellar Recess Hydrodistension Before Hyaluronic Acid Injection
Ultrasound-guided hydrodistension of the suprapatellar recess before hyaluronic acid injection in the knee. Technique, indications and advantages by Dr. Santiago Robles.
Reviewed by Dr. Santiago Robles · Specialist in Physical Medicine & Rehabilitation · License No. 052406034 · Last reviewed:
Ultrasound-Guided Suprapatellar Recess Hydrodistension
Ultrasound-guided hydrodistension of the suprapatellar recess is a technique I perform before hyaluronic acid injection in the knee to confirm intra-articular access and optimize how the treatment is distributed. In selected patients, it may improve joint access and facilitate intra-articular treatment.
Key Takeaways
- Performed before hyaluronic acid injection (viscosupplementation) of the knee.
- Confirms the intra-articular position of the needle in real time.
- Improves joint access in cases where a direct injection is more difficult.
- An ultrasound-guided technique, with no ionizing radiation.
- Mainly indicated in knee osteoarthritis (gonarthrosis).
Procedure Video
What Does It Involve?
Saline is introduced into the suprapatellar recess —the most superior extension of the knee joint cavity— to distend it and confirm access, and hyaluronic acid is then injected. The suprapatellar recess communicates with the rest of the joint, making it a reliable access route. The technique is performed in two complementary steps:
- Hydrodistension of the recess: saline is introduced under ultrasound guidance to distend the suprapatellar recess and confirm the correct intra-articular position of the needle.
- Hyaluronic acid injection: once access is secured, hyaluronic acid (viscosupplementation) is delivered into the joint.
Why Perform Hydrodistension First?
Because distending the recess before the injection confirms the needle is inside the joint and helps the treatment distribute properly. It offers several advantages:
- Improves joint access in cases where a direct injection may be more difficult
- Confirms the intra-articular position of the needle in real time
- Facilitates intra-articular treatment in selected patients
- Helps the hyaluronic acid distribute more evenly
When Is It Indicated?
I usually consider this technique in patients who are candidates for viscosupplementation with hyaluronic acid, particularly in the context of:
- Knee osteoarthritis (gonarthrosis)
- Degenerative joint pain
- Cases where optimizing intra-articular access is needed
Why Guide It With Ultrasound?
Ultrasound guidance allows visualization of the suprapatellar recess and safe needle placement, confirming true intra-articular access. Its main advantages are:
- Real-time visualization of the needle and joint structures
- Confirmation of true intra-articular access
- Greater accuracy in delivering the treatment
- No ionizing radiation
What Happens After the Procedure?
Following the technique, there is a brief observation period and a progressive return to usual activity:
- A brief observation period in the clinic
- Progressive return to usual activity
- Continuation, if appropriate, of the prescribed rehabilitation and exercise plan
Consult with Dr. Santiago Robles
If you suffer from knee pain and want to know if ultrasound-guided hyaluronic acid injection may be a treatment option for your case, don't hesitate to schedule a consultation. Dr. Santiago Robles specializes in ultrasound-guided interventional techniques and offers a personalized evaluation for each patient.