Arthrology: Sternoclavicular joint Flashcards
SC Joint type
Sellar/saddle
Morphology
Clavicle is convex superior-inferior
Clavicle is concave anterior-posterior
Manubrium is concave superior-inferior
Manubrium is convex anterior-posterior
Protraction arthrokinematics
anterior roll and glide of concave clavicle
Retraction arthrokinematics
posterior roll and glide of concave clavicle
Elevation arthrokinematics
superior roll and inferior glide of convex clavicle
Depression arthrokinematics
inferior roll and superior glide of convex clavicle
Innervation
Medial supraclavicular n.
Deep n. to subclavius
SC joint dislocation
Anterior or posterior
Very rare
Direct trauma or FOOSH
Clavicle fx more common
Posterior dislocation = risk of critical injury to neurovasculature