Is it possible the replace an injured AC shoulder joint with an artificial joint?

i had an injury about a year ago in my shoulder MRI shows a complete tear of the acromioclavicular joint it's the small space bteween the acromion & the clavicle anyway doctor said it'll be better but till now i still have pain & instability in my shoulder! is there an artificial something to replace the old torn one?& if yes can it be done through arthroscopy or open surjery?