So, the function of your clavicles is to attach your arms to your ribcage, and to further assist your scapula to stabilize your arms.
What I know so far is that clavicle lengthening is ABSOLUTELY possible by conventional methods like bone graft or even long bone lengthening via the technique of osteogenesis (bone distraction).
The important question is...
What will be the impact on the biomechanics of your shoulder joint? Will the disproportionate increase in the bone length of your clavicle cause disharmony in the structure of the shoulder joint? The shoulder joint is a series of interdependent bones, muscles and ligaments, so would an increase of one inch for each clavicle impact that negatively? Your clavicle meets the acromiom tip part of the scapula in what's called the A.C joint. Theoritcally, the increase in length will force your whole upper arm to be pushed out. In what direction I do not know. Will that transfer into visible improvement in width?
Help me answer these questions