Case Study: Why the Diagnosis Comes Before the Treatment

A 51-year-old woman came to us after being treated with physical therapy for “shoulder impingement.” She was not improving. If anything, she was getting worse.

What the Ultrasound Actually Showed

When I examined her shoulder with high-resolution musculoskeletal ultrasound, the first abnormality was obvious: a relatively soft calcific deposit within the supraspinatus tendon. That could easily have been the end of the story.

But when I looked carefully at the tendon insertion, something else caught my attention. The deep fibers near the footprint almost looked like a partial articular-sided tear. Almost. Something did not fit. So instead of labeling it, I traced the supraspinatus fibers in real time, from tendon to footprint and back again.

That changed the diagnosis. What initially resembled a partial-thickness tear was actually cortical erosion of the greater tuberosity with intraosseous extension of the calcific deposit. This is an uncommon but important manifestation of calcific tendinopathy: during the resorptive phase, calcium can become less dense and migrate out of its original location, most often toward the bursa, but occasionally into bone or even muscle.

Where Diagnosis Becomes Treatment

This is where diagnosis becomes treatment. There were two reasonable minimally invasive options to consider. Ultrasound-guided barbotage mechanically needles, irrigates and aspirates the calcific material. The alternative is focused extracorporeal shockwave therapy (fESWT).

In this particular case, I strongly preferred fESWT. The reason is that I was no longer treating only a calcification inside a tendon. There were two involved tissues: the supraspinatus tendon and the underlying bone. Focused shockwave has a well-established role in calcific rotator-cuff tendinopathy and can promote resorption of calcific deposits, and focused shockwaves are also used in bone pathology, where mechanotransduction can stimulate vascular and bone-remodeling responses.

So rather than passing a needle through an already disrupted tendon-bone interface to remove a soft deposit, fESWT gave us the opportunity to address both sides of the lesion, the calcification and the bone response. A potential double win. This also fits what the comparative literature suggests: once a deposit has eroded into bone, it is often no longer a straightforward target for percutaneous irrigation.

Why an Incorrect Diagnosis Is a Treatment Problem

This case illustrates something more important than a naming error. Every diagnosis creates a treatment strategy. If we diagnose “impingement,” we may repeatedly strengthen and load the shoulder as an impingement problem. But if the real problem is an active resorptive calcific tendinopathy with cortical erosion and intraosseous involvement, repeatedly loading a highly reactive tendon-bone interface may be exactly what the patient does not need at that stage.

The physical therapy itself was not necessarily wrong. It was being applied to the wrong diagnosis. That distinction matters.

The NYDNRehab Approach

At NYDNRehab, this is why we place so much emphasis on precision diagnosis before treatment. Musculoskeletal ultrasound is not simply about finding something abnormal. It is about understanding what tissue is involved, what biological process is occurring, and therefore what treatment actually makes sense. Sometimes the most important part of an ultrasound examination is knowing when not to stop looking.

If you have shoulder pain that is not responding to treatment, a precise diagnosis is the first step. You can contact our clinic to arrange an assessment.

Medical Disclaimer: This case study describes a single patient’s presentation and is provided for general educational purposes only. It is not medical advice and does not establish a standard of care. Diagnosis and treatment must be individualized by a qualified clinician, and outcomes vary between patients.