How effective is physiotherapy for AC joint injury?

The AC joint sits where the collarbone meets the shoulder blade. An injury may cause pain with reaching across the body, lifting, pushing, or lying on that side. Therapy may begin with comfortable movement and strategies to reduce strain, then progress to shoulder-blade control, rotator-cuff strength, posture, and task practice.

The timeline and goals vary with the degree of ligament damage, pain, shoulder stability, work demands, and whether another injury is present. A visible bump can remain even when pain and function improve, so appearance alone does not measure recovery.

Use the sling only as directed, keep the elbow, wrist, and hand moving when permitted, and avoid repeatedly testing painful ranges. Your physiotherapist can adjust load, technique, and pacing so that the shoulder is challenged without a sharp increase in symptoms. Gradual return to lifting and sport is based on control and strength, not a fixed calendar.

Arrange prompt assessment after a new fall with marked deformity, inability to raise the arm, numbness or weakness in the hand, severe unrelenting pain, or skin that becomes pale or cold. Seek advice for worsening swelling, fever, or a wound after an operation.

Ask which structures are injured, whether the joint is stable, what movements to avoid initially, and what milestones should guide return to work or sport. Ask your physiotherapist how to judge acceptable muscle fatigue versus a warning increase in pain.