Tag: Ac joint separation

Affecting around 10% of all shoulder girdle injuries, acromioclavicular (AC) joint separation is a surprisingly common reason for a noticeable shoulder bump, especially in young, active individuals. A prominent or 'why is my bone showing on my shoulder?' can be a confusing symptom that points to several possible underlying causes, ranging from injury to nerve damage.

Over one million shoulder separations occur annually in the U.S., with many being a severe, type 3 injury. A type 3 injury represents a complete tear of specific ligaments, leading to significant joint instability and often a visible deformity, making it a serious orthopedic concern that demands appropriate medical attention.