Does The Chest Get Wider With Clavicle Lengthening?
Q: Dr. Eppley, I noticed that your clavicle lengthening results usually add about two inches overall. Since the pectoral muscle attaches to the clavicle does this usually result in a broader chest?
A: Your supposition would be correct. As the clavicle is lengthened it pushes the shoulder out. Since the insertion of the pectoralis muscle is attached to the humerus (upper arm) it will also get pushed out laterally. This will move the lateral pectoral muscle border, which is what defines the width of the chest, outward. Thus the chest does get wider as the clavicle gets longer.
Dr. Barry Eppley