Sometimes (normally from overuse) the joint between the acromion and collarbone can become arthritic.
Symptoms The arthritic joint produces pain around the shoulder during high, overhead activities.
Investigations X rays and an ultrasound or MRI scan.
Treatments Non-Operative: Ultrasound guided injections of local anaesthetic and cortisone into the arthritic joint can reduce pain and occasionally stop any further deterioration.
Operative: If injections fail then the arthritic joint can be removed (distal clavicle excision) either with keyhole or open surgery depending on the severity of the arthritis.