KINESIOL 3K03 Lecture Notes - Clavicle Fracture, Sternoclavicular Joint, Joint Capsule
9 Jan 2014
School
Department
Course
Professor
Document Summary
Rhomboids and trapezius (lower and middle) indirectly influence how the ac joint operates. Gliding, translating, small amount of rotation in the ac joint. Joint capsule contributes to the stability but coracoclavicular ligaments are the main stabilizers. Primary stabilizers for the ac joint, binds clavicle down to the scapula. Ac joint sprain: acute: separated shoulder , not a dislocation, clavicle separated from scapula. Sprain of ligaments (harder to fail, need more trauma) o o o o. Most common way, direct physical contact to the joint (acromion and clavicle. Foosh, load from the fall goes up to the ac joint. Step deformity = lowering of the acromion relative to the clavicle. Caused by weight of arm pulling it down and muscle guarding more. Bruising: can spread from shoulder down to armpit. Muscle guarding: upper trapezius contracts to protect the shoulder lifts the clavicle up. Get x-ray done to rule out clavicle fracture.
