Arthrology: Sternoclavicular joint Flashcards
1
Q
SC Joint type
A
Sellar/saddle
2
Q
Morphology
A
Clavicle is convex superior-inferior
Clavicle is concave anterior-posterior
Manubrium is concave superior-inferior
Manubrium is convex anterior-posterior
3
Q
Protraction arthrokinematics
A
anterior roll and glide of concave clavicle
4
Q
Retraction arthrokinematics
A
posterior roll and glide of concave clavicle
5
Q
Elevation arthrokinematics
A
superior roll and inferior glide of convex clavicle
6
Q
Depression arthrokinematics
A
inferior roll and superior glide of convex clavicle
7
Q
Innervation
A
Medial supraclavicular n.
Deep n. to subclavius
8
Q
SC joint dislocation
A
Anterior or posterior
Very rare
Direct trauma or FOOSH
Clavicle fx more common
Posterior dislocation = risk of critical injury to neurovasculature
