A shoulder pain specialist finds which structure is making the pain. It may be the rotator cuff tendons, the bursa above them, the joint capsule, the joint at the top of the shoulder, or a nerve in the neck that only feels like the shoulder. Then that structure is treated under image guidance. At the Padda Institute in St. Louis you need no referral, and most shoulder pain is treated without surgery.
The shoulder is the joint where a scan misleads most often. When doctors ran ultrasound on both shoulders of 664 adults in one Japanese village, 22 percent had a full-thickness rotator cuff tear. Two out of every three of those tears caused no pain at all. By the 80s, more than a third of the village had one. So “you have a tear” is a finding. It is not yet a diagnosis, and it is a poor reason on its own for an operation.
Put a finger where it hurts most. That spot, and what sets it off, narrows the list faster than any scan.
Often, yes. The nerve roots at C5 and C6 leave the neck and supply the skin and muscles over the shoulder. When one of them is pinched, the brain reports the pain where that nerve ends, not where it is pinched. Patients get shoulder injections for months for a problem that sits two inches from their spine.
A few clues tip it toward the neck. The pain changes when you turn your head or look up. It travels below the elbow. It comes with tingling, numbness or a weak grip. And raising the arm overhead does not make it worse. Some people find it eases when they rest the hand on top of the head. A shoulder problem gets worse in that position. A neck root gets better, because the position takes slack off the nerve.
The exam sorts most of this out. When it does not, EMG and nerve conduction testing shows whether a nerve root is carrying signals normally. Our neck pain page covers cervical radiculopathy in detail.
Three things stack up after dark. Lying on the painful side squeezes the bursa and the cuff tendon between the arm bone and the roof of the shoulder. Lying flat lets the arm drop backward and stretches an irritated tendon. And the body’s own anti-inflammatory hormone, cortisol, is at its lowest in the middle of the night. Inflammation that was held back in the afternoon comes forward at 2 a.m.
Then lost sleep turns up the gain. One bad night lowers the pain threshold the next day, so the shoulder hurts more, so the next night is worse. That loop is why we treat sleep as part of shoulder care, not as an afterthought. A pillow hugged against the chest keeps the painful arm from falling backward. Sleeping on the good side, with that pillow, takes the load off the cuff.
I spent years telling patients that a prediabetic A1c was “not too bad.” I was wrong, and the shoulder is one of the first places that mistake shows.
A meta-analysis of 18 studies found that people with diabetes were five times as likely to develop a frozen shoulder. Frozen shoulder affected 13.4 percent of them. It ran the other way too: 30 percent of people arriving with a frozen shoulder already had diabetes.
The mechanism is chemistry, not bad luck. Sugar binds to collagen with no enzyme needed and forms cross-links called advanced glycation end products. The capsule of the shoulder is a sleeve of collagen. Cross-link it and the sleeve thickens and shrinks. High insulin adds a second push, because it keeps the cells lining the joint in an inflamed state. Then add the money. The cheapest calories in any grocery store are acellular carbohydrates, so the people with the least money carry the most glucose. The shoulder is where a food system shows up as a diagnosis. Read more in diabetes, frozen shoulder and trigger finger.
So a frozen or slow-healing shoulder gets an A1c, a fasting insulin and a triglyceride-to-HDL ratio here. A stiff shoulder in a 52-year-old is a metabolic finding until proven otherwise.
For most shoulder pain, no. The best test of that question was the CSAW trial in the United Kingdom. It enrolled 313 people with at least three months of shoulder pain, intact cuff tendons, and failed exercise therapy plus at least one steroid shot. One group had the bone spur shaved away. A second group had a camera put in the shoulder and nothing removed. The two surgical groups did the same. Shaving the bone added nothing over a placebo operation.
That is a finding about one common operation for one type of pain. It does not mean surgery is never right. A full-thickness tear from a fall, with sudden loss of the ability to lift the arm, is a different problem. It gets imaging and a surgical opinion within weeks, not months, because a torn tendon pulls back over time. Dr. Gurpreet Singh Padda, MD, MBA, MHP is a licensed physician and surgeon. We start with the least invasive option that answers the question and move to surgery when the shoulder needs it.
The exam comes first, then imaging read against it. Ultrasound in the office shows the tendons and bursa while you move the arm. An MRI is ordered when the exam suggests a full tear or something deeper.
Injections go where the problem is. A shoulder injection given by feel lands in the wrong place far more often than patients are told, and the person holding the needle usually cannot tell. Ours are placed under ultrasound or fluoroscopic guidance. See how often blind injections miss. A steroid shot calms an inflamed bursa. It does not rebuild tendon, so we do not keep repeating it into the tendon itself.
The tissue gets treated, not just quieted. For a worn or partly torn cuff, an image-guided tendon injection of PRP works on the tendon itself. Our orthobiologic treatment for partial rotator cuff tears page explains how it rebuilds the tendon before it splits, and chronic tendinitis covers the tendon that has stalled. For a frozen shoulder, a guided injection into the capsule calms the inflamed lining so the stretching can work. For tendon pain that has lasted for years, shockwave therapy and hydrodissection are options.
The injection is not the treatment. It is what makes the treatment possible. A tendon rebuilds in response to force. Its cells sense load and answer with new collagen, a process called mechanotransduction. Rest a sore cuff forever and it gets weaker. Load it too hard too soon and it flares. The bridge an injection buys is the window to load it at the right dose. Our rotator cuff exercise evidence page covers what the trials found.
Procedures are done with local anesthetic. There is no sedation, and most patients drive themselves home and are back to normal activity within two to four hours.
Call 911 or go to an emergency room if shoulder pain comes with any of these:
More on the shoulder from Dr. Padda on YouTube:
No. You can book directly, and you do not need to be a current patient. A few insurance plans want a referral on file before they pay. Our page on referrals for pain management explains which ones.
No. Bring one if you have it. The exam and an in-office ultrasound answer most shoulder questions. An MRI is worth ordering when the exam points to a full tear, a labral injury, or a problem the ultrasound cannot see.
One well-placed shot into an inflamed bursa is not the worry. The worry is a long run of steroid shots, especially into the tendon itself, because steroids slow the cells that make collagen. That is why we look for the cause after the first shot wears off, instead of repeating it.
Raising the arm narrows the space under the roof of the shoulder. An irritated cuff tendon or bursa gets pinched in the middle of that arc and is free again at the top. A painful middle arc points to the cuff. Pain only at the very top points to the AC joint.
Expect weeks to months, not days. Tendon has a poor blood supply and rebuilds slowly. Pain usually eases before strength returns, which is why the loading program continues after you feel better.
Usually, with changes. Keep the arm below shoulder height under load, swap overhead presses for rows, and stop any lift that causes sharp pain in the middle of the arc. Complete rest weakens a tendon that needs load to heal.
Bring any shoulder imaging, a list of the injections you have had and whether they helped, and your most recent A1c if you have one. If you have been told your shoulder is “just wear and tear,” ask us which structure is making the pain and how we will prove it. Call us or request an appointment. See all conditions we treat.
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