KINESIOL 3K03 Lecture Notes - Lecture 15: Subacromial Bursa, Coracoacromial Ligament, Deltoid Tuberosity
21 Sep 2016
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Mechanism local tissue damage never diagnose someone with impingement, it doesn"t tell you what"s wrong, it"s a mechanism; not a specific pathology it"s an umbrella, a category, tells why a structure is damaged. When we start to fatigue, mechanics start to screw up. Pinching something underneath acromion coraco-acromial arch and the subacromial space black rectangle: coraco-acromial ligament size of subacromial space is very small, < 1cm, but have to squeeze a number of structures through this external impingement. 1. impingement/effect on outer/ superficial surface of structures because they"re the ones that are in close contact with the arch. 3 candidates for pathology: things you fit under the coraco-acromial arch: supraspinatus tendon passes underneath, subacromial bursa fluid sac we find in places where there"s high degree of friction long head of bicep tendon. 4: most difficult because they"re the most complicated to perform, require coordination between scapula, clavicle, humerus the more complex, the more opportunity for things to go wrong.
