Barbotage is a minimally invasive procedure that uses a needle to break up and wash out calcium deposits from a tendon. It’s most commonly performed on the shoulder to treat calcific tendonitis, a condition where hard calcium crystals build up inside the rotator cuff and cause significant pain. The procedure is done with ultrasound guidance, typically in an outpatient setting, and takes roughly 30 to 45 minutes.
How the Procedure Works
Barbotage has two parts: needling and lavage (washing). During the needling phase, a doctor inserts a needle into the calcium deposit under ultrasound imaging and repeatedly punctures it to break the hardite crystite crystals into smaller fragments. During the lavage phase, saline solution is injected through the needle and then withdrawn, flushing out as many of the broken-down calcium particles as possible. This inject-and-withdraw cycle is repeated multiple times until the deposit is reduced or cleared.
After the calcium has been removed, a steroid injection is typically delivered into the fluid-filled space (bursa) just above the rotator cuff tendon. This helps control inflammation and provides short-term pain relief while the tendon heals.
The entire procedure is performed with local anesthetic to numb the skin and surrounding tissue, so you’re awake throughout. Most people describe the experience as uncomfortable but tolerable.
What It Treats
The primary use of barbotage is calcific tendonitis of the shoulder, where calcium crystals (hydroxyapatite) accumulate within the rotator cuff tendons. This condition affects roughly 2 to 8% of adults and can cause intense shoulder pain, stiffness, and difficulty sleeping on the affected side. While many cases eventually resolve on their own, the process can take months to years, and symptoms during that time can be severe enough to interfere with daily life and work.
Barbotage is generally considered after other treatments have failed, including physical therapy and steroid injections alone. Current orthopedic guidelines from the Dutch Orthopedic Association recommend a practical approach: start with a steroid injection, and if symptoms persist, barbotage with an additional steroid injection is a reasonable next step, particularly for patients with large calcium deposits visible on imaging.
Success Rates
Research from the Hospital for Special Surgery found that 75% of patients had a successful outcome after ultrasound-guided barbotage, measured by meaningful improvements in both pain and function at a minimum of eight months of follow-up. About 83% of all patients in the study reported pain relief. Broader studies have reported clinical success rates between 60% and 74%, depending on follow-up length and how success was defined.
Patients with acute symptoms lasting three months or less before the procedure did slightly better, with 87.5% achieving successful outcomes compared to 71% of those with chronic, longer-standing symptoms. Interestingly, patients who had already received steroid injections before barbotage still responded well, with 85% achieving a successful result.
One important note: recovery after barbotage is not immediate. Guidelines advise patients that full recovery typically takes 6 to 12 months, and that pain may temporarily worsen in the first few days or weeks after the procedure as the tendon heals and any remaining calcium is reabsorbed by the body.
How It Compares to Surgery
The main surgical alternative is arthroscopic debridement, where a surgeon uses small instruments inserted through keyhole incisions to physically scrape out the calcium deposit. This is a more invasive procedure requiring general anesthesia and a longer recovery period. Arthroscopic surgery is often chosen for patients who haven’t responded to less invasive options, including barbotage.
Barbotage sits in the middle of the treatment ladder. It’s more targeted than steroid injections or physical therapy alone, but far less invasive than surgery. There’s no incision, no general anesthesia, and most people return to normal activities within a few days to weeks, though the underlying healing takes longer. Cost is also significantly lower than arthroscopic surgery, and the procedure can be performed in an office or radiology suite rather than an operating room.
Who Benefits Most
The best candidates for barbotage tend to be patients with clearly visible, relatively large calcium deposits on ultrasound or X-ray who haven’t improved with initial conservative treatment. Recent evidence suggests the procedure may offer only modest additional benefit over a steroid injection alone in some patients, so the size and nature of the deposit matters when deciding whether barbotage is worthwhile.
Patients should also understand that calcific tendonitis is often self-limiting, meaning the calcium deposits eventually break down and are reabsorbed without any treatment at all. The purpose of barbotage is to speed up that process and relieve pain sooner rather than waiting months or years for natural resolution.
Barbotage in Anesthesiology
The term “barbotage” also appears in an entirely different medical context. In spinal anesthesia, barbotage refers to the technique of repeatedly drawing up cerebrospinal fluid into a syringe and re-injecting it along with the anesthetic drug. The idea is to mix the anesthetic more thoroughly with the spinal fluid, potentially affecting how high the numbing block spreads. Whether this technique meaningfully changes outcomes is debated among anesthesiologists, and its use varies widely in practice.