Where it hurts and where the load is coming from are often different places.
You noticed it reaching for something on a high shelf. Or putting a jacket on. Or reaching into the back seat, which is a movement nobody thinks about until it stops being free.
For a lot of people the first real sign is sleep. You cannot lie on that side any more, and you have quietly reorganised how you sleep around it.
Sometimes it is a specific point on the outside of the arm. Sometimes it is vaguer, sitting somewhere between the shoulder blade and the neck, and hard to put a finger on.
What is actually in there
The ball sits against a socket that is shallow by design, closer to a golf ball resting on a tee than a hip sitting in its cup. Almost all the stability comes from soft tissue: the capsule, the ligaments, and four small muscles collectively called the rotator cuff.
The cuff is usually described as a group of movers. It is closer to a group of controllers. Its main job is keeping the ball centred while the larger muscles do the moving, and it does that continuously, without instruction.
Behind all of it is the shoulder blade, which is not fixed to your ribs. It floats on muscle, and it has to rotate and glide in coordination every time you lift your arm. When it stops doing that well, the joint above it takes the difference.
One more thing worth knowing. Structures in the neck refer pain into the shoulder and upper arm regularly. The shoulder is one of the places the body is least precise about locating.
The load it carries
Overhead work is the obvious load: painting a ceiling, a shelving project, a swim block, throwing. Less obvious is the load of holding still. A desk day is hours of the shoulder blade held in one position while the arm works in front of the body, which is a small range repeated thousands of times.
Sleep matters here more than at most other joints, because side sleeping compresses the shoulder for six or seven hours at a stretch and most people do it on the same side every night.
The pattern that produces trouble is usually the same: a body that spends most of its day in a narrow range, then asks the shoulder for something at the edges of its range without preparation.
Why the threshold got crossed this week
It was the moment the arithmetic stopped working. Two things move the line. Load went up, or capacity came down.
A weekend of painting. A new gym program with pressing or pulling. A house move. A baby who now gets lifted and carried on one side. Back to swimming after a long break.
A stretch of poor sleep, especially on that side. A period of no training. Illness. A month where stress has been high and everything sat a little tighter than usual.
Usually both, at once.
If you would rather skip ahead and have someone look at it, that is a reasonable place to start.
Book an assessmentWhy your capacity was thin
Load arrives, tissue responds, you recover, you carry on.
We describe it in three stages: adapting, borrowing and overloaded. The line between them is not how much load you carry. It is how much of it you clear before the next lot arrives.
Shoulders are a common place for the borrowing to show, because the joint sits at the end of a chain. When a mid-back stops rotating or a neck stops moving freely, the shoulder is what makes up the difference, on every rep of every day.
Read how your body carries loadWhat we check
A shoulder can hurt because of the shoulder. It can also hurt because the shoulder blade underneath it is not moving, or because the neck above it is referring, or because the mid-back behind it has stopped rotating and the joint has been covering for it for years.
That is why we do not assess a shoulder by looking only at the shoulder.
What you do, how you sleep, what your body has already been through, and what has changed recently.
How far the region moves, how it moves, and what the surrounding structures are doing to compensate.
Reflexes, sensation and strength, to understand how well the system is communicating.
Where we need to understand structure before making a decision, we say so and explain why.
We tell you what we found, what it means in plain English, and what we think is worth doing about it. You decide from there.
Call an ambulance if shoulder or arm pain comes on with chest pain, tightness or pressure, shortness of breath, sweating, nausea, or pain spreading into the jaw. Shoulder and arm pain can be a symptom of a heart problem, particularly on the left side, and it is not something to sit with.
See your GP or go to an emergency department if your shoulder pain follows a significant fall or impact and you cannot lift the arm, if the joint is hot, red and swollen, or if it comes with fever or unexplained weight loss.
If you are not sure, ask us. We would rather send you to the right person than be the wrong one.
Side sleeping loads the joint for hours at a time without variation, and there is nothing to distract you from it. Night pain is common with shoulder problems and it is also a detail worth reporting, because it helps narrow what is going on.
Complete rest is rarely the answer, and neither is pushing through. What the shoulder can tolerate depends on what is happening in it, which is the thing to establish first.
Sometimes, and the phrase gets used far more broadly than it should. The cuff is four muscles doing a specific job, and plenty of shoulder pain does not involve them.
It can, and it does more often than people expect. That is one of the reasons the assessment does not start and finish at the shoulder.
An assessment at Wild Chiropractic in Shenton Park starts with a history, a look at how you move, and a conversation about what we found.
Book an assessmentWhat happens first
