Acromioclavicular Joint
Description[edit | edit source]
The Acromioclavicular Joint, or AC joint, is one of four joints that compose the shoulder complex. The AC joint is formed by the junction of the lateral clavicle and the acromion process of the scapula. The AC joint serves as the main articulation that suspends the upper extremity from the trunk, and it is at this joint about which the scapula moves[1].
Motions Available[edit | edit source]
Ligaments[edit | edit source]
Muscles[edit | edit source]
Closed Packed Position[edit | edit source]
The closed packed position of the AC joint occurs when the GH joint is abducted to 90 degrees.
Open Packed Position[edit | edit source]
The open packed position of the AC joint is undetermined.
Other Important Information[edit | edit source]
References
[edit | edit source]
- ↑ [Dutton, M. (2008). Orthopaedic: Examination, evaluation, and intervention (2nd ed.). New York: The McGraw-Hill Companies, Inc.]
