Sternoclavicular joint injuries affect the small joint where your collarbone (clavicle) meets the breastbone (sternum) at the base of your throat. Even though it is a small joint, it is the only true bony link between your arm and your trunk, so it has a big influence on how your shoulder blade and shoulder move. When the sternoclavicular joint is irritated, sprained, partially displaced (subluxed), or fully dislocated, you can feel pain right at the “inner end” of the collarbone, and that pain often spreads into the neck, upper chest, or shoulder.
It is helpful to think of sternoclavicular joint injuries as a spectrum. Some are straightforward ligament sprains that settle with guided sternoclavicular joint rehab. Others are more serious dislocations, particularly a posterior sternoclavicular dislocation where the collarbone shifts backwards toward the airway and major blood vessels. These need urgent medical assessment. Even after medical management, physiotherapy for sternoclavicular joint injuries is essential to restore shoulder mechanics, rebuild strength, and guide a safe return to work and sport.
Physiotherapy for sternoclavicular joint injuries also focuses on the “why” behind ongoing symptoms. The sternoclavicular joint is sensitive to poor load sharing across the shoulder girdle, especially if the shoulder blade (scapula) is not moving well, the upper back is stiff, or the neck and upper chest muscles are overworking. That is why good sternoclavicular joint physiotherapy exercises are not just about the joint itself. Rehab needs to progressively train the whole shoulder girdle system so the joint is protected during pushing, pulling, lifting, throwing, and contact.
Key Facts
- Sternoclavicular joint dislocations are uncommon and make up under 3% of shoulder girdle dislocations, and under 1% of joint dislocations overall. 🔗
- Sternoclavicular joint injuries involve the joint where the collarbone meets the breastbone at the base of the neck. Because this joint helps link your arm to your trunk, a sternoclavicular joint injury can affect shoulder blade control and make pushing, lifting, and reaching painful. 🔗
- Most sternoclavicular joint injuries are ligament sprains rather than full dislocations. 🔗
- With timely diagnosis and appropriate management, long-term function can be favourable for both anterior and posterior sternoclavicular joint injuries, whether treated conservatively (including physiotherapy rehab) or with surgery when required. 🔗
Risk Factors
- Contact sports (AFL, rugby, league, hockey, martial arts)
- High-energy falls (cycling, skateboarding, skiing) or motor vehicle accidents
- Prior sternoclavicular joint injury or a history of shoulder girdle instability
- Generalised hypermobility
- Poor scapular control or low shoulder girdle strength (especially serratus anterior and lower trapezius)
- Work requiring repetitive pushing, lifting, or overhead tasks
- Returning to contact sport too early after a sternoclavicular joint injury
Symptoms
- Pain or tenderness right at the inner end of the collarbone (near the sternum)
- Swelling or bruising at the sternoclavicular joint area
- A visible bump or step at the sternoclavicular joint (more common in anterior dislocation)
- A “dip” or loss of the usual collarbone contour (can occur with posterior displacement)
- Pain when lifting the arm, reaching across the body, pushing up from a chair, or carrying a bag
- Clicking, clunking, or a sense the joint is moving excessively (sternoclavicular instability)
- Reduced shoulder range of motion because shoulder blade movement feels blocked or guarded
- Neck tightness, headaches, or upper back pain due to protective muscle spasm
- Red flag symptoms (need urgent assessment): shortness of breath, choking sensation, hoarse voice, difficulty swallowing, tingling or weakness in the arm, or changes in arm colour/temperature
Aggravating Factors
- Pushing movements (push-ups, bench press, getting up off the floor)
- Reaching across the body (hugging, seatbelt reach, washing the opposite shoulder)
- Overhead work, especially if combined with load (lifting into cupboards, shoulder press)
- Carrying heavy loads on the injured side (tool bags, school bags, groceries)
- Contact or impact (tackles, falls, collisions in footy, rugby, hockey)
- Sleeping on the injured side or with the arm pulled forward
- Prolonged slumped posture that pulls the shoulder girdle forward and loads the sternoclavicular joint
Causes
Sternoclavicular joint injuries most commonly happen from trauma. A typical mechanism is a fall onto the shoulder or an impact to the outer shoulder that drives the collarbone medially toward the sternum. Less commonly, a direct blow to the sternoclavicular joint itself can injure the supporting ligaments. In sport, tackles and collisions can create the compressive forces that sprain or dislocate the joint.
Not all sternoclavicular joint problems are a one-off traumatic event. Some people develop sternoclavicular instability over time due to repeated minor strains, especially if they have generalised joint hypermobility. In those cases, the joint capsule and ligaments gradually become less effective at controlling motion, and symptoms can flare with pushing, heavy lifting, or overhead work. Physiotherapists often see this presentation when the shoulder blade muscles are under-conditioned, the upper back is stiff, and the chest and neck muscles are overactive.
A related injury that can mimic sternoclavicular dislocation in teenagers is a medial clavicle growth plate injury (because the growth plate near the sternum closes later than many others). This can behave like a “dislocation-like” injury and still requires careful assessment. Regardless of the exact tissue involved, sternoclavicular joint rehab is aimed at restoring controlled shoulder girdle motion and strength while protecting the injured structures during healing.
How Is It Diagnosed?
Diagnosis starts with a detailed history of the mechanism of injury and the current symptoms. A physiotherapist will assess tenderness, swelling, deformity, and how your shoulder blade and shoulder move together. Because sternoclavicular joint injuries can change the way the whole shoulder girdle functions, a physio assessment looks beyond the painful spot. This includes checking upper back mobility, neck movement, breathing mechanics, and the pattern of scapular control during arm elevation.
A key part of assessment is screening for a posterior sternoclavicular dislocation or other complications. If the inner end of the collarbone has moved backwards, there is a risk of compression of structures behind the joint. A physiotherapist will take any breathing, swallowing, voice change, arm circulation changes, or nerve symptoms seriously and refer urgently.
In more stable injuries (such as a sternoclavicular ligament sprain), diagnosis is often clinical, with imaging used to rule out fracture or confirm joint position if needed. Physios also use symptom behaviour over time to guide sternoclavicular joint physiotherapy exercises and return-to-activity progression.
Investigations & Imaging
- X-ray
- Helps screen for fracture and may show displacement, though the sternoclavicular joint can be difficult to see clearly on standard views.
- CT scan
- Best for confirming sternoclavicular joint position (especially posterior displacement) and for defining associated injuries around the medial clavicle and sternum.
- MRI
- Can show ligament injury, joint capsule disruption, and associated soft tissue injury when pain persists or instability is suspected.
- Ultrasound
- May help with superficial soft tissue assessment, but it is not the preferred test for confirming sternoclavicular joint alignment.
Physiotherapy Management
Exercise
Sternoclavicular joint physiotherapy exercises usually start with restoring comfortable shoulder blade control without provoking the joint. Early exercise often includes gentle scapular setting, supported arm movements, and isometric strengthening that builds stability without large joint shear. As pain settles, rehab progresses into serratus anterior and lower trapezius strengthening, because these muscles help position the shoulder blade so forces are shared through the shoulder girdle rather than concentrated at the sternoclavicular joint. Later-stage sternoclavicular joint rehab includes progressive pressing, pulling, and overhead patterns, but with careful attention to technique so the collarbone is not forced forward or upward aggressively. For sport, physiotherapy for sternoclavicular joint injuries should include contact preparation where relevant, such as controlled perturbations, bracing strategies, and graded exposure to tackling or collision drills.
Activity Modification
In the early phase, a physio will help you avoid the specific positions that stress the injured sternoclavicular structures, commonly end-range cross-body reach and heavy pushing. This does not mean total rest. It means using a planned reduction in load while keeping the shoulder moving in safe ranges to prevent stiffness and deconditioning. Modifications can include avoiding heavy bench press or dips, reducing overhead lifting at work, changing sleeping position, and temporarily using a sling if prescribed. Activity modification is also about pacing, because flare-ups are common if you repeatedly “test” the joint with pushing or carrying too soon.
Manual Therapy
Manual therapy for sternoclavicular joint injuries is typically directed at surrounding regions rather than aggressive mobilisation of the sternoclavicular joint itself, especially early on. A physiotherapist may use gentle soft tissue techniques for overactive neck and chest muscles, and improve upper thoracic mobility to help normalise shoulder blade movement. If the sternoclavicular joint is unstable, hands-on treatment must be cautious and purpose-driven, aiming to reduce protective muscle tone and improve movement options, not to force joint motion.
Postural Retraining
Posture matters because a persistently rounded shoulder position can keep the collarbone sitting forward and can increase compressive and shear forces at the sternoclavicular joint. A physio will retrain thoracic extension control, rib cage position, and scapular mechanics so the shoulder girdle sits in a more efficient, supported position during desk work, lifting, and exercise. The goal is not “perfect posture”, but better load-sharing so the sternoclavicular joint is not repeatedly irritated.
Bracing & Taping
Some sternoclavicular joint injuries benefit from short-term external support. Depending on the injury pattern and medical advice, a sling may be used early to reduce pain and protect the joint. A physiotherapist may also use taping strategies to cue scapular position and limit provocative movements, particularly cross-body reach and forward shoulder drift. For contact athletes returning to play, strapping can provide confidence and reduce excessive movement, but it should sit alongside strength-based sternoclavicular joint rehab rather than replace it.
Heat & Ice
Ice can be useful in the first few days to settle pain and swelling around the sternoclavicular joint. Heat may help later when muscle guarding around the neck, upper chest, and shoulder becomes the main limiter. A physio will guide timing and dosage so these strategies support movement rather than encourage over-resting.
Education
Education is a major part of physiotherapy for sternoclavicular joint injuries because people often worry about the visible bump (especially with anterior dislocation) or the clicking sensation. A physiotherapist explains what the joint is doing, what symptoms are normal during healing, and which symptoms are not normal and require urgent review. Education also covers return-to-gym and return-to-sport decisions, including how to rebuild pressing strength without repeatedly flaring the joint, and how to judge readiness for contact if you play a collision sport.
Other
Breathing mechanics and rib movement can become guarded after a sternoclavicular injury because the pain is close to the chest wall. If this is a factor, physiotherapy may include breathing retraining and graded exposure to chest expansion. For people with ongoing sternoclavicular instability, rehab may also involve longer-term strength programming, confidence-building for load, and strategies to manage hypermobility, including reducing end-range joint “hanging” and improving mid-range control.
Other Treatments
In the acute stage, pain relief and short-term immobilisation may be recommended by a doctor, particularly for more severe sprains, subluxations, or after reduction of a dislocation. Some people require emergency department care for assessment and reduction, especially if a posterior dislocation is suspected.
Medication such as simple analgesics or anti-inflammatory medication may be used to manage pain so you can move and participate in physiotherapy for sternoclavicular joint injuries. In selected persistent cases where inflammation remains high and function is limited, a specialist may consider image-guided injection, but this is not routine for acute traumatic sternoclavicular joint injuries and must be considered in context.
Surgery
Surgery is not required for most mild sternoclavicular sprains. However, surgical management becomes more likely when there is a posterior sternoclavicular dislocation (because of the risk to structures behind the joint), when a dislocation cannot be maintained after reduction, or when there is persistent symptomatic instability that fails appropriate sternoclavicular joint rehab.
Acute posterior dislocations are typically managed urgently in hospital, often with attempted closed reduction. If the joint cannot be reduced or remains unstable, open reduction and stabilisation may be required. Surgical techniques vary and may use graft-based reconstruction to restore stability. After surgery, physiotherapy is essential. Sternoclavicular joint physiotherapy exercises are progressed carefully to protect the reconstruction while restoring scapular mechanics, shoulder range, strength, and function. Your physiotherapist will work closely with the surgeon’s protocol, particularly around timelines for returning to pressing, overhead lifting, and contact sport.
Prognosis & Return to Activity
Prognosis depends on the injury type, the direction of any dislocation, how quickly the injury was identified, and whether the joint remains stable through healing. Mild sternoclavicular sprains often improve steadily with a structured physiotherapy program that restores scapular control and gradually reloads pushing and lifting. More significant ligament injury or subluxation can take longer because the joint may remain irritable if rehab progresses too quickly.
Anterior dislocations can sometimes leave a visible bump even after symptoms settle. Many people regain strong function with sternoclavicular joint rehab even if the contour remains changed, as long as pain and instability are managed. Posterior dislocations are treated more cautiously and require medical clearance before physiotherapy progression, particularly before returning to contact sport or heavy overhead work.
Return to activity is best guided by function rather than dates alone. A physiotherapist will look for comfortable full-range shoulder motion, good scapular control under load, the ability to push and pull without joint shift, and confidence with sport-specific tasks. For contact sports, return also requires graded exposure to impact and the ability to maintain shoulder girdle control when fatigued.
Complications
- Missed posterior dislocation with compression of airway, swallowing structures, nerves, or blood vessels
- Persistent sternoclavicular joint instability with recurrent subluxation episodes
- Ongoing pain with pushing and overhead work due to poor shoulder girdle load sharing
- Reduced shoulder function due to scapular dyskinesis (altered shoulder blade control)
- Degenerative change at the sternoclavicular joint over time after significant injury
- Anxiety and movement avoidance because the joint feels unsafe or unstable
Preventing Recurrence
- Build pressing tolerance gradually: keep regular, progressive strengthening of serratus anterior, lower trapezius, and rotator cuff so the shoulder blade shares load and the sternoclavicular joint is not taking the brunt of pushing tasks.
- Avoid repeated end-range cross-body loading when irritated: if you are prone to sternoclavicular joint flare-ups, limit heavy “across the body” lifts and stretches, and prioritise mid-range control during rehab and gym training.
- Improve upper back mobility and rib control: targeted thoracic mobility and postural retraining can reduce forward shoulder drift that increases stress at the sternoclavicular joint during desk work, driving, and lifting.
- Contact sport strategies: refine tackling and falling technique to avoid landing directly on the point of the shoulder, and use graded contact exposure in sternoclavicular joint rehab before full return.
- Manage load spikes: plan increases in training volume and upper body strength work so you do not jump suddenly into heavy bench press, dips, or push-ups after a layoff.
When to See a Physio
- If you have pain, swelling, or a new bump at the inner collarbone after a fall, tackle, or collision
- If pushing, lifting, or overhead activity keeps flaring your sternoclavicular joint despite rest
- If you feel clicking, clunking, or a sense the sternoclavicular joint is “slipping”
- If you want a guided plan for physiotherapy for sternoclavicular joint injuries and a safe return to gym, work, or sport
- Urgently (or emergency department): any breathing difficulty, swallowing difficulty, voice change, arm tingling/weakness, or changes in arm colour/temperature after a sternoclavicular joint injury