Kinesiology 2236A/B Lecture Notes - Lecture 11: Coracoclavicular Ligament, Sternoclavicular Joint, Acromioclavicular Joint

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2236A/B
• Professor: Dave Humphreys

Document Summary

Shoulder injuries in sport, percent of injuries in sport, high number of injuries in sports especially with involvement with upper body (hitters, throwers, contact) Gh st joint ac joint sc(outer to inner) 70% of injuries happen to upper extremities, many athletes have shoulder problems. Many people have shoulder problems (tendinitis/dislocations, broken collar bones) Usually condition where arm comes over horizontal position supraspinatus. Connects the upper limb to the axial skeleton on each side. Clavicle attaches medially to the sternal manubrium. Laterally to the acromion process of the scapula. Clavicle articulates with manubrium to form the sternoclavicular joint. Only 25% of clavicles surface area in (boney contact) Integrity of the joint comes from strong ligament attachment. Only direct connection between ue (upper extremity) and trunk. Integrity of the joint needs to come from ligaments to help attach them. Clavicle can move freely forward/back, up and rotate. Attached to the shoulder blade this has to rotate, movement of the scapula.