The usual workup runs backward: scan first, then treat whatever the scan finds. Past 50, a scan almost always finds something. The faster question is older than any MRI: what were you doing when it started, and what have you done every day since?

Did your shoulder pain start with a fall, a crash or a lift?

A shoulder that was fine on Monday and useless after a slip on the ice, a rear-end collision or a pallet that shifted is a time-sensitive shoulder. Three injuries lead the list. A traumatic rotator cuff tear shows up as an arm you suddenly cannot raise on your own, even though someone else can lift it for you. An acromioclavicular (AC) separation leaves a bump at the top of the shoulder where the collarbone meets the shoulder blade, often from landing on the point of the shoulder. A dislocation that went back in on its own can leave a torn labrum (the cartilage rim of the socket) that makes the shoulder feel loose for months.

The clock matters here in a way it does not for worn shoulders. A freshly torn tendon pulls back and its muscle starts turning to fat within months, which is why a true traumatic tear in a working-age adult gets imaging and a surgical opinion in weeks, not after a long trial of therapy. If the injury came from a car crash, the shoulder is rarely the only thing hurt; care after a car accident covers the neck and back injuries that ride along with it.

Can your job wear out your shoulder?

Yes, and the dose is measurable. A systematic review of occupational studies by van Rijn and colleagues found that subacromial impingement, the pinching of the cuff tendons under the roof of the shoulder, was 2.8 to 4.2 times as common in workers who lifted more than 20 kilograms (about 44 pounds) more than ten times a day or held high hand force for over an hour a day. So did something no lifting belt fixes: high psychological job demand, with odds 1.5 to 3.2 times higher.

That last finding surprises people. A worker under constant time pressure holds the upper trapezius tight all shift, the shoulder blade rides higher, and the space the cuff tendon slides through narrows. Stress becomes posture, and posture becomes load. This clinic sits minutes from the cargo docks and hangars around Lambert, and the shoulders we see reflect it: baggage handlers, overhead mechanics, drywall crews, nurses who lift patients. When the job caused it, care for a work injury in Missouri explains how the claim and the treatment fit together.

Why does a shoulder tendon fail without any injury at all?

Tendon stays strong by answering load: its cells sense stretch and lay down new collagen. Two upstream forces quietly break that conversation. The first is mechanical: a cuff squeezed under the acromion thousands of times a week loses blood flow at its weakest point, near where it attaches to the bone. The second is metabolic. Insulin resistance and high triglycerides change the tendon itself: collagen gets stiffer and more disorganized, small blood vessels supplying it narrow, and low-grade inflammation from abdominal fat bathes the tissue every hour of the day. A 2019 systematic review by Burne and colleagues pooled six studies of 1,187 people with rotator cuff-related shoulder pain; four of the six found it more common in people with metabolic syndrome, and the individual cardiometabolic risk factors tracked with it consistently. The studies were observational and modest in quality, so they show a link, not a proven cause. We check the blood work anyway, because the same terrain drives knee and back pain too.

The third force is behavior. A sore shoulder gets guarded, the tendon gets less load and weakens, and the next ordinary reach overloads it.

Is the pain in the shoulder joint, the shoulder blade or the neck?

Three places produce pain people call “my shoulder.” The ball-and-socket joint and the cuff tendons around it hurt with arm movement, especially reaching up or out. The muscles that steer the shoulder blade, along the top and inner edge of the blade, hurt with sitting, driving and screens, and often carry tender knots that respond to trigger point injections. A pinched nerve root in the neck hurts with head movement and sends tingling past the elbow; that pattern belongs on cervical radiculopathy, not on a shoulder injection schedule.

The shoulder blade is the one most often skipped. When the muscles that steer it are weak or tired, the socket points the wrong way during a reach and the cuff tendon takes the hit. Treating the tendon while ignoring the blade is like replacing the tires on a car with a bent axle.

How is shoulder pain diagnosed here?

History first, because the story narrows the list. Then an exam that tests each tendon against resistance, checks motion when you lift the arm and when we lift it, and watches the shoulder blade move from behind. In-office ultrasound shows the tendons and bursa while the arm moves. An MRI is ordered when the exam points to a full tear, a labral injury or a bone problem.

When the picture is still mixed, a test injection settles it. Numbing medicine goes under ultrasound into one space, such as the bursa above the cuff or the AC joint. If the painful reach stops hurting within minutes, that space is the source. If it does not, we have ruled something out without an operation. image-guided joint injections explains why the guidance matters.

If the MRI shows a tear, do I need surgery?

Not if the tear came on without an injury and you are past your mid-50s. A Finnish trial by Kukkonen and colleagues randomized 180 shoulders in patients over 55 with non-traumatic supraspinatus tears to physiotherapy alone, physiotherapy plus bone-spur removal, or full cuff repair plus spur removal and physiotherapy. At one year the shoulder scores were 74.1, 77.2 and 77.9, a difference too small to matter, and the trial authors concluded that conservative care should come first for this group.

That finding is scoped. It does not cover the traumatic tear in a 45-year-old, a tear that keeps growing on repeat imaging, or a shoulder that stays weak after a well-run rehab program. Dr. Padda is a licensed physician and surgeon, and for those shoulders a surgical repair is the right next step, made early enough to work.

How is shoulder pain treated without surgery?

Dr. Padda’s own record with dosing is not tidy. He once ran a sauna hyperthermia experiment on himself, wired to an EKG and drawing his own blood, pushed his heart into an irregular rhythm called bigeminy, and reversed it with a cold plunge. It was a reckless way to learn something true: tissue answers the dose you give it, and too much too fast is its own injury. Tendon rehab runs on that rule.

• An injection to open the window. A guided steroid injection into an inflamed bursa or AC joint calms it within days. It does not rebuild tendon, so it is placed beside the tendon, not into it, and it is not repeated on a calendar. Each shot is a clinical decision.
• Loading that rebuilds the tendon. Slow, heavy-enough resistance work for the cuff and the shoulder blade muscles, started low and raised every week or two. Pain up to a mild level during the exercise is allowed if it settles by the next morning.
• Treatment aimed at the tissue. For a worn or arthritic shoulder, PRP or bone marrow concentrate placed under image guidance works on the joint itself; see shoulder arthritis treatment and the full overview of orthobiologics and PRP. For tendon pain that has lasted years, shockwave therapy is another option.
• The terrain. Fasting insulin, triglycerides and A1c, then the food and sleep changes that lower them, because the tendon heals inside that blood. Metabolic health and pain explains the program.

What happens on the day of a shoulder injection, and after?

The injection itself takes a few minutes under local anesthetic. You are awake, there is no sedation, and most people drive themselves home and are back to normal activity, including work, within two to four hours. Numbing medicine can make the arm feel heavy for an hour or two; wait until it feels like yours again before you drive. The follow-up asks what the injection proved: which motions improved, which did not. Rehab starts within days, while the window is open, and a loading program is written down so you can run it at home or with your own therapist.

Which shoulder symptoms need the emergency room instead?

• Left shoulder or arm pain with chest pressure, shortness of breath, sweating or nausea. Call 911. Heart pain often lands in the shoulder.
• A deformed shoulder after a fall or crash, or an arm you cannot move at all. That can be a fracture or an unreduced dislocation.
• A hot, swollen, red shoulder with fever or chills. A joint infection needs same-day care.
• Sudden weakness or numbness in the arm with a severe headache, facial droop or trouble speaking. Call 911. See when pain is an emergency.

Frequently asked questions

Do I need a referral for shoulder pain treatment?

No. You can book directly with us. Some insurance plans, mostly HMO plans, want a referral from your primary care doctor on file before they pay, and we can help you check. Whether you need a referral for pain management walks through which plans ask for one.

My shoulder was hurt at work. Can I still come here?

Yes. In Missouri the employer usually directs the first treatment, and you can also be evaluated at your own expense. Bring the claim number and any notes from the company doctor. What to bring to a first pain appointment lists the rest.

Should I stop lifting until my shoulder heals?

Usually not completely. Keep heavy loads close to the body and below shoulder height, and drop the movements that give sharp pain in the middle of a reach. Total rest weakens the tendon you are trying to heal. How interventional care differs from plain pain management explains why we pair the injection with a plan to load.

Does food really matter for a shoulder tendon?

It matters for the blood the tendon heals in. High insulin and triglycerides track with cuff pain, and lowering them is one of the few things that helps the tendon around the clock. A low-carb diet for pain covers how to start without a rough first month.

Related reading

• Shoulder arthritis treatment with PRP and bone marrow concentrate
• Orthobiologics and PRP injections in St. Louis
• Cervical radiculopathy
• Image-guided joint injections
• Injured at work
• Trigger point injections