Arthrex Questions And Answers

Where does the Pectoralis Major tendon (Pec Major) attach? - Origin -Superior: CLAVICLE- anterior border of the medial half of clavicle -Medial: STERNUM-anterolateral border of sternum and costal cartilage of ribs 1-7 -Inferomedial: ABDOMEN-aponeurosis of the external abdominal obliques Insertion -Lateral: distal lateral aspect of greater tuberosity of humerus/bicipital groove of humerus What is the function of the pec major? - -powerful ADduction (toward body) of humerus -internal rotation of the humerus (minor role) What is the common cause of pec major tendon rupture? - commonly associated with heavy lifting (dips or bench press) usually men 20-40 (rare in women), usually report pop or tearing sensation Where is the most common place to tear the tendon? - insertion at the humeral insertion or some at the musculotendinous junction near the insertion but very rarely occurs at the origins What are the challenges associated with the repair? - -Repairing the retracted tendon to its anatomic location -Insertional avulsions leave little remnant tendon tissue with which to identify the insertional footprint -Chronic rupture cases also present a surgical challenge to locating the site for anatomic repair and may even require allograft tendon reconstruction What is arthritis caused by? - the articular cartilage degenerates over time bc of lack of blood supply Most common fracture site of humerus? - the surgical neck Supraspinatus