Recovery from an acromioclavicular (AC) joint injury typically takes 2–6 weeks for mild sprains (Grade I–II) and 6–12 weeks or longer for more severe injuries (Grade III and above). Persistent pain may benefit from ultrasound-guided cortisone or hyaluronic acid injections to reduce inflammation and improve joint function.
Acromioclavicular Joint Injury Recovery Time: What to Expect
An acromioclavicular (AC) joint injury, sometimes called a shoulder separation, occurs when the ligaments connecting the collarbone (clavicle) to the shoulder blade (acromion) are stretched or torn.
It is a common cause of pain at the top of the shoulder, particularly after a fall or direct impact.
Understanding recovery time helps set realistic expectations and guides appropriate treatment.
What Is the AC Joint?
The AC joint is located at the top of the shoulder where the collarbone meets the shoulder blade. It plays a key role in shoulder stability and overhead movement.
Injury usually occurs due to:
- Falling onto the shoulder
- Sporting collisions
- Direct trauma
- Road traffic accidents
AC Joint Injury Grades & Recovery Time
Grade I (Mild Sprain)
- Ligaments stretched but not torn
- Mild swelling and tenderness
- Recovery: 2–4 weeks
Grade II (Partial Tear)
- Partial ligament tear
- Visible swelling
- Moderate pain with movement
- Recovery: 4–8 weeks
Grade III (Complete Tear)
- Complete ligament rupture
- Visible bump on the shoulder
- Pain and instability
- Recovery: 6–12 weeks or longer
Higher-grade injuries may take several months, particularly if pain persists.
Why Some AC Joint Injuries Take Longer to Heal
Recovery may be prolonged if:
- Inflammation persists
- The joint remains irritated during movement
- There is underlying AC joint arthritis
- Early treatment was delayed
Chronic AC joint pain can develop even after the ligaments heal.
Treatment We Offer at Alton Pain Clinic
For persistent AC joint pain, we provide targeted, image-guided treatments.
Ultrasound-Guided Cortisone Injections
Cortisone reduces inflammation within the AC joint.
Benefits include:
- Rapid pain relief
- Reduced swelling
- Improved shoulder movement
- Better tolerance of daily activities
Ultrasound guidance ensures precise placement directly into the AC joint for maximum effectiveness.
Ultrasound-Guided Hyaluronic Acid Injections
Hyaluronic acid injections help lubricate and cushion the AC joint, particularly useful in:
- Post-traumatic AC joint arthritis
- Chronic AC joint inflammation
- Degenerative joint irritation
Benefits include:
- Improved joint glide
- Reduced friction
- Longer-lasting symptom relief in some patients
Key Takeaway
AC joint injury recovery time depends on severity:
- Mild sprains: 2–4 weeks
- Moderate injuries: 4–8 weeks
- Severe injuries: 6–12+ weeks
If pain persists, ultrasound-guided cortisone injections or hyaluronic acid injections can significantly reduce inflammation and improve shoulder function.
At c, we provide precise, image-guided treatment for AC joint pain to optimise recovery and restore shoulder comfort.
Explore Other Treatment Options
Hyaluronic Acid Injections
Hyaluronic acid (HA) injections can help improve joint lubrication by replenishing the natural hyaluronic acid found within the joint. This may reduce friction between joint surfaces, support smoother movement and help improve comfort during everyday activities.
PRP Injections
Platelet-rich plasma (PRP) injections use a concentrated preparation of your own platelets to support the body’s natural healing processes within the affected joint. They may help support tissue repair, reduce discomfort and promote improved joint function and mobility.
Frequently Asked Questions
How long does AC joint pain last?
Mild injuries settle within weeks, but moderate to severe injuries may take several months.
Can AC joint injuries heal without surgery?
Yes. Most AC joint injuries are treated non-surgically.
Are cortisone injections effective for AC joint pain?
Yes. They are highly effective in reducing inflammation and relieving pain.
What is the benefit of hyaluronic acid injections?
They improve joint lubrication and may provide longer-lasting relief in degenerative or chronic cases.