Kinematics Team FAQ: Glenohumeral Joint Capsular Fibrosis (Frozen Shoulder)
October 16thYour shoulder has gradually become stiff. Reaching overhead is harder. Getting dressed takes more effort. Sleeping on that side is suddenly out of the question.
If this has crept up over weeks or months, you may be dealing with glenohumeral joint capsular fibrosis, more commonly known as frozen shoulder. So, what is actually happening inside the joint?
Glenohumeral Joint Capsular Fibrosis Definition aka Frozen Shoulder. Think of your shoulder as a ball sitting inside a shallow socket, surrounded by a loose, stretchy sleeve of tissue called the joint capsule.
That capsule needs to move and stretch with you. It is part of what allows you to reach overhead, scratch your back, throw a ball or simply move your arm through everyday life.
With fibrosis, the capsule becomes thicker and tighter as scar-like tissue develops. The stretchy sleeve effectively loses some of its give.
That is where the term “frozen” comes from. The shoulder has not necessarily been damaged. The capsule has simply become less flexible, restricting how much the joint can move.
Where will I feel pain with a glenohumeral joint capsular fibrosis?
The pain is often deep and difficult to pinpoint. Rather than pointing to one particular spot, you might find yourself placing your whole hand over the shoulder. It can also travel down the outside of your upper arm towards the elbow.
Night pain is particularly common and can be frustrating. You may wake when you roll onto the affected side, or spend half the night trying to find a position that feels comfortable.
Earlier in the process, quick or unexpected movements can produce a sharper catch of pain. Reaching suddenly, being jolted when a car stops or moving the arm quickly can all bring it on.
What movements will I struggle to perform if I have fibrosis in my glenohumeral joint capsular?
Overhead movement is often one of the first things you notice changing. Washing your hair. Reaching for something on a high shelf. Pulling a jumper over your head. Suddenly, tasks you have done thousands of times require more planning.
Reaching behind your back can be even more restricted. Doing up a bra, tucking in your shirt or reaching into the back seat of the car may become surprisingly difficult.
External rotation or turning your arm outwards is another movement that is commonly limited during assessment. Think about reaching back for your seatbelt.
You may also notice carrying a bag away from your body or lifting a saucepan from a low shelf becomes harder than expected.
The important thing here is that it is usually not just one movement causing trouble. The capsule has tightened around the joint, so several directions of movement can be affected.
Will I feel pain in any other regions of my body?
You can. When your shoulder is not moving well, other areas often start doing more of the work. Your neck and trapezius (the large muscle running from your neck towards your shoulder) commonly become tighter or more uncomfortable.
Your shoulder blade may also feel tender or restricted. If you have been protecting the arm for a while, you might even notice stiffness through your mid-back because you have gradually changed how you sit and move.
The elbow or wrist can sometimes become uncomfortable too, particularly when you start relying on them more during everyday tasks.
How does a glenohumeral joint capsular fibrosis happen?
Sometimes there is no obvious reason. There may have been no fall, injury or single event you can point to. Frozen shoulder is more common between the ages of 40 and 60, particularly in women, and there is a well-established association with diabetes and thyroid conditions.
There can also be a clearer trigger. A shoulder that has been kept still following surgery or a fracture, for example, can become progressively stiffer. Avoiding movement because of another painful shoulder problem can have a similar effect.
Frozen shoulder generally progresses through three overlapping phases: a painful “freezing” phase, a “frozen” phase where stiffness becomes more prominent, and a gradual “thawing” phase as movement starts to return.
What things should I try initially once I’ve glenohumeral joint capsular fibrosis?
Keep it moving, but keep it gentle. Complete rest is rarely helpful for a stiff shoulder. Pendulum exercises can be a useful starting point because the arm hangs loosely while you make small, comfortable movements.
Heat before exercise may help the shoulder feel more comfortable and ready to move. Ice afterwards can help settle a flare-up if one occurs.
Keep using the arm for light everyday activities within what you can comfortably manage like folding washing, stirring a pot, or typing, for example.
Getting the shoulder assessed early can also help. Understanding which stage you are in matters because the right approach can change as the shoulder moves from painful and irritable towards stiffness and, eventually, recovery.
What things should I try to avoid in the initial stages of a glenohumeral joint capsular fibrosis?
Avoid forcing your shoulder into sharp pain. It can feel as though pushing harder must mean making more progress. During an acute, irritated stage, though, aggressive stretching can simply flare things up.
At the same time, completely protecting the shoulder is unlikely to help. Keeping it in a sling or barely using the arm can contribute to further stiffness.
The goal is usually somewhere in between: keep moving, respect the symptoms and temporarily modify the specific activities that consistently aggravate things.
That might mean easing back on certain gym exercises or overhead work rather than stopping all movement.
What type of exercises or movements do I need to learn to rehab the glenohumeral joint capsular?
Range of movement is usually the starting point. As your shoulder becomes more comfortable, the focus can shift towards rebuilding strength and control through the rotator cuff and the muscles around your shoulder blade.
From there, rehabilitation becomes increasingly specific to what you actually need your shoulder to do.
That might mean carrying, controlled overhead lifting or rotational movements. Someone working towards swimming will need a different final-stage programme from someone whose main goal is comfortably reaching the top kitchen cupboard.
What other considerations contribute to fibrosis of glenohumeral joint capsular?
Blood sugar control is worth considering, particularly because of the established association between diabetes and frozen shoulder.
Sleep matters too. Persistent pain can disrupt sleep, and poor sleep can make it harder to manage ongoing pain.
Stress, general activity levels and prolonged desk posture may also influence how your body responds to the problem. These factors do not necessarily cause the shoulder stiffness, but they can contribute to the tension and compensations that develop around it.
What treatments can help relieve some pain or fast track my glenohumeral joint capsular rehabilitation?
A thorough assessment is the place to start. Your practitioner can work out which movements are restricted, how much they are restricted and how irritable the shoulder is. That information helps shape the rehabilitation plan.
Treatment may include hands-on joint mobilisation, guided stretching, and a home exercise programme matched to the stage your shoulder is in.
For some people, a corticosteroid injection can help reduce pain enough to make early movement more manageable. If pain is significantly limiting progress, this is something to discuss with your GP.
If diabetes or thyroid issues are part of the picture, it is also worth addressing those alongside your physiotherapy care with your doctor.
What are the expected timeframes of rehabilitating glenohumeral joint capsular?
Frozen shoulder is rarely a quick process. A full recovery can take 12 to 24 months, and sometimes longer. That does not automatically mean rehabilitation has failed. The condition itself can take time to move through its different stages.
For most people, consistent rehabilitation and continued movement are important parts of working towards restoring function.
If your shoulder has been painful or stiff for more than a few weeks, particularly if it is affecting your sleep or making everyday tasks harder, getting it properly assessed is worth your time.
Book online today so our physiotherapists look at the whole picture. What is happening in your shoulder, how it is affecting your day-to-day life, and what you need to get back to doing.
From there, we can help you unlock the playbook for your next stage of rehab and level up your movement with a plan that is built around you.
This article is for general education only and is not a substitute for personalised medical advice.