Treatment depends on the seriousness of injury. The clavicle can be damaged / broken in proximal, middle or distal (thats towards the arm end) parts. With distal injuries the ligaments to the coracoid and acromion (which belong to the shoulder blade) can be involved in various severities causing more or less displacement and potential instability. Often the bone heals despite not being completely together leaving a lump or step in it which doesn't have to cause problems. It's not quite clear from your information what it is that hasn't healed properly, none union of bone is possible and also if there's been inadequate rest for the arm and too much attempted movement the ligaments can be involved. The types of acromioclavicular ligamentous injuries with displacement are classified and up to type III conservative treatment possible. For active rugby players and young people other rules may apply. Somtimes an operation is neccesary for vertical stability (so the clavicle doesn't displace upwards and distal end) but I'd only go to a surgeon who does lots of sports injuries successfully and not all local hospitals have that. I would advise you to get your exact diagnosis and X-rays before going to the physio. If you have just been seen briefly at fracture clinic and not by doctors experienced in rugby injuries consider a second opinion. Ask the physio to explain everything about the anatomy and function of what has been damaged if it's not clear to you. I guess you with want to return to rugby and you need to get good recovery and repair and advice before joining the next scrum. Physio can fix a number of problems but not all if the gap is too big. Wish yyou luck. JM