What is Hydrodissection
Hydrodissection is a minimally invasive, ultrasound-guided injection technique that involves the precise delivery of fluid—typically a combination of sterile saline and a small amount of local anaesthetic to gently separate and release soft tissue structures that are adhered or entrapped. At The Injury Hub, we specialise in using hydrodissection for Achilles and Patellar tendinopathy/tendinosis, conditions frequently seen in runners and athletes.
Unlike steroid injections, no corticosteroids or regenerative medications are used, making hydrodissection an appealing option for patients seeking natural, low-risk pain relief and restoration of movement.
How Does It Work?
Under real-time ultrasound guidance, fluid is carefully injected into the space between the painful tendon and the surrounding Kager’s fat pad (Achilles) or Hoffa’s fat pad (knee). These regions are often infiltrated by neovessels (new blood vessels) and nerve ingrowth, which are strongly associated with chronic pain.
By mechanically “stripping” or dissecting the tendon away from these inflamed adjacent structures, the procedure:
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• Reduces abnormal nerve input that perpetuates pain
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• Disrupts neovascularisation, which often maintains chronic inflammation
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• Restores natural tendon gliding and mobility
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• Creates space for proper tissue remodelling and repair
This technique does not damage the tendon instead, it facilitates recovery by restoring the natural interface between tissues.
Why is Hydrodissection So Effective?
Hydrodissection can provide immediate reduction in pain and improved movement, enabling patients to progress to rehabilitation without delay. At The Injury Hub, we combine this procedure with a structured progressive loading programme guided by our onsite Strength & Conditioning specialist, which helps consolidate the gains made during treatment and prevent recurrence.
This holistic approach allows patients especially runners or athletes with long-standing tendon issues, to return to activity faster and with more confidence.
Conditions We Commonly Treat with Hydrodissection:
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• Achilles Tendinopathy/Tendinosis
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• Patellar Tendinopathy
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• (Also applicable for Frozen Shoulder, although not a primary use at The Injury Hub)
Frequently Asked Questions:
Q: Is the procedure painful?
A: Most patients tolerate the procedure well. We use a small amount of local anaesthetic in the fluid mixture to make the process comfortable.
Q: How long does the procedure take?
A: Typically 10–20 minutes, including ultrasound imaging and the injection itself.
Q: When can I return to activity?
A: Often within a few days. Many patients begin rehab exercises within the same week, under our in house strength & conditioning coach.
Q: Is this a one-off treatment?
A: Many patients experience significant relief after a single session. However, a second procedure may be needed in some chronic cases.