When “Restless Legs” Was Really a Fascial Adhesion

Dana, a 48-year-old woman who had run for most of her adult life, developed a deep ache and tightness in her right calf. It was quiet during the day and loud at night: as soon as she lay down to sleep, the leg would start to gnaw and she felt a restless urge to move it — symptoms that looked, on the surface, like restless legs syndrome. Over four years she saw several clinicians. A workup pointed toward lumbar nerve involvement, and she ultimately underwent lumbar spine surgery for a presumed radiculopathy. Her calf pain did not change. A vascular workup — arterial and venous studies — was normal. A nerve conduction study (EMG/NCS) was normal. When she came to us, we did not order another scan first; we put an ultrasound probe on the calf that hurt — over the exact spot that was tender when we pressed on it. There, in the superficial fascial layer of the gastrocnemius, was a thickened, tethered adhesion. We released it with Hydrofascia Release. Her pain resolved completely and stayed gone, and she returned to running about 25 miles a week.

Chronic calf pain is deceptively hard to sort out, because so many different problems can produce it and the obvious ones get ruled in first. Dana’s story followed the usual map:

Every one of those tests did its job. The gap was not a missed reading — it was that none of them image the fascia, and fascia was where the problem lived. This is a recurring theme in our clinic and the reason we so often start with a dynamic ultrasound of the tissue that hurts.

The most confusing part of Dana’s story was the timing. Most musculoskeletal pain is worse with activity and better with rest. Hers was the opposite — comfortable on the run, miserable in bed. That reversal is exactly why she kept being pointed toward restless legs. Here is the working explanation we gave her, offered as clinical reasoning rather than proven fact:

When you stand and walk, your calf muscles act as a pump. Every step squeezes the deep veins and moves blood and fluid up and out of the leg, and the muscle layers glide over one another to do it. When you lie down at night, that pump switches off. Blood and fluid redistribute, pressures in the leg shift, and the tissues settle. In a normal calf, none of this is noticeable. But where a fascial layer is stuck to the one beneath it, that adhesion tethers small nerves and vessels and resists the change. As flow shifts away from and around the restricted area at rest, the tethered tissue becomes irritable — producing a deep, crawling ache and an urge to move. Moving, of course, turns the pump back on and briefly relieves it. The result is a peripheral, one-sided problem that impersonates a central one.

The clinical lesson is not that restless legs syndrome isn’t real — it very much is, and it deserves proper neurological workup.⁴ The lesson is that “worse at rest, better with movement, relieved when I get up” can also be the signature of a mechanical fascial problem, especially when it is one-sided, tied to a specific spot, and unresponsive to the treatments RLS usually responds to. In a runner, chronic calf pain also overlaps with chronic exertional compartment syndrome, another condition where the fascia — not the muscle, nerve, or artery — is the culprit.⁵

We examined the symptomatic calf with high-resolution, dynamic ultrasound — imaging the tissue while it moves, not just at rest — and focused on the point that was tender to palpation. In the superficial fascial layer of the gastrocnemius, where the tissue should glide smoothly, was a thickened, tethered plane that did not slide when the ankle was moved. That is a fascial adhesion (Figure 1), and it sat directly beneath the spot that reproduced her pain on exam.

This is precisely the kind of change static imaging tends to miss. MRI is superb for tears, tumors, and bone, but a thin, non-gliding fascial layer can look unremarkable on a still image. Ultrasound, by contrast, can show altered connective-tissue structure and, uniquely, can watch tissue move in real time — which is why researchers have used it to document abnormal fascial thickness and shear in people with chronic pain.⁶ A detailed, head-to-toe version of this same approach is what we call Fascial Mapping, and the “normal scans but real pain” story it so often uncovers is one we’ve written up before.

Hydrofascia Release (ultrasound-guided hydrodissection) treats an adhesion directly. Under live ultrasound, a small volume of fluid is placed precisely into the stuck fascial plane. The fluid does mechanically what the tissue can no longer do on its own: it separates the layers, frees the tethered nerves and vessels, and restores glide. It is not a cortisone shot and it is not surgery — it is a targeted, image-guided release of the exact interface that isn’t moving.

This technique is well described in the sports-medicine literature and is part of our founder’s own published work. Dr. Jacques Courseault first described ultrasound-guided fascial hydrodissection for chronic hamstring injury,² and a separate published case documented fascial hydrodissection resolving chronic calf pain in a former marathon runner whose imaging, like Dana’s, was normal — and who returned to running.³ For runners whose calf problem is a chronic exertional compartment issue, our team has also reported resolving symptoms with ultrasound-guided hydrodissection combined with dextrose prolotherapy — a non-surgical alternative to fasciotomy.¹ Where an adhesion sits alongside instability or a stubborn tendon, we may add prolotherapy or ProloBoost PRP; where the goal is durable return to sport, we bridge into the Fascia Performance Program.

Dana reported complete resolution of her calf pain — a full 100% improvement by her own account — including the nightly restlessness that had disrupted her sleep for four years. At follow-up the improvement was maintained. She has returned to running roughly 25 miles per week without pain, and without the nightly urge to move her leg. After four years, three normal tests, and a spine surgery that never addressed the real problem, the fix was releasing a single fascial adhesion the other studies could not see.

Individual results vary. This is a single de-identified case and is not a promise of a particular outcome. A careful evaluation is the only way to know whether a fascial cause is contributing to a given person’s pain.

Written for The Fascia Institute and Treatment Center of LA. Clinical approach directed by Dr. Jacques Courseault, MD, founder of the Fascia Institute and a physician who has published on ultrasound-guided fascial hydrodissection.

1. Cristian AL, Courseault J. Successful Treatment of Chronic Exertional Compartment Syndrome with Hydrodissection & Prolotherapy. Association of Academic Physiatrists, Physiatry ’24 Annual Meeting; Poster 1028; Feb 23, 2024. Abstract.
2. Courseault J, Kessler E, Moran A, Labbe A. Fascial Hydrodissection for Chronic Hamstring Injury. Curr Sports Med Rep. 2019;18(11):416–420. PMID: 31702723. doi:10.1249/JSR.0000000000000650.
3. Bailowitz Z, Chang CJ. Ultrasound-guided Fascial Plane Hydrodissection for Chronic Calf Pain. PM R. 2021;13(S1). Abstract.
4. Kwatra V, Khan MA, Quadri SA, Cook TS. Differential Diagnosis and Treatment of Restless Legs Syndrome: A Literature Review. Cureus. 2018;10(9):e3297. PMID: 30443467. doi:10.7759/cureus.3297.
5. Tarabishi MM, Almigdad A, Almonaie S, Farr S, Mansfield C. Chronic Exertional Compartment Syndrome in Athletes: An Overview of the Current Literature. Cureus. 2023;15(10):e47797. PMID: 38022185. doi:10.7759/cureus.47797.
6. Langevin HM, Stevens-Tuttle D, Fox JR, et al. Ultrasound evidence of altered lumbar connective tissue structure in human subjects with chronic low back pain. BMC Musculoskelet Disord. 2009;10:151. PMID: 19958536. doi:10.1186/1471-2474-10-151.

This case report is provided for general educational purposes and is de-identified. It describes the course of a single patient; individual results vary and no specific outcome or cure is implied. Nothing here is a substitute for evaluation and advice from your own qualified healthcare provider. If you have sudden, severe, or rapidly worsening leg pain, swelling, numbness, or discoloration, seek urgent medical care to rule out a clot or acute vascular problem.