Hi Rosie
Yes I believe the the SCJ doesn't properly ossify and fuse until around the age of 18 so the chances are the problem will resolve. I guess the best option is to maintain the integrity of the joint and protect from further damage in the meantime. Sounds like you are on to it and heading in the right direction. I'm assuming the subluxations are anterior?? I've read about a clavicular strap in literature before but haven't any experience in having used one with a patient before but may be an option?? Good luck and thanks for an interesting post!!
Hi Rosie - I'm sure that trying to strengthen the shoulder stabilizers will help - but unfortunately our young athletes will spend more time training the traumatic movement (the crawl in this case). I have had some success using KT Tape (kinesiotape) with some tennis players - overhead athletes as well - as this will somehow protect or even alter the movement patterns slightly. A good website with instructional videos is kttapeeurope.com. The pre-cut strips are easy to apply, and they even stay on in water, which can extend the protection to several days. Your athlete can even learn to use the tape on his own.
Ignoring the site of SCJ, did you check the functional movement of shoulder?
Extention. flextion, abduction, adduction, external and internal rotation by active and passive? did you find any limited motion? If those movement is limited(dysfunctional) then you need to treat those structures before strength exercise.
Treating those structures can reduce loads to shouder and SC joints. make sure you put patients back on the wall when doing abduction adduction, external and internal rotation. patients will cheat movements by doing uncalled moveoument.(anterior superior shoulder movement)