Forms of Luxation
Different shapes are distinguished depending on how the joint head and socket are positioned in relation to each other after the shoulder has been dislocated. Luxatio anterior/subcoracoidea: Anterior dislocation is the most common form. The head stands in front of the shoulder joint under a bony projection of the shoulder blade (proc.
coracoidus). Luxatio inferior/axillaris: The head is located below the glenoid cavity and is displaced in the direction of the armpit. Luxation posterior/infraspinata: Here, the dislocated shoulder causes the joint head to stand behind the glenoid cavity, displaced in the direction of the back.
Other very rare forms are: Luxatio superior (upward), Luxatio erecta (head is below, arm can no longer be brought to the body), Luxatio intrathoracica (head is pressed into the thorax).
- Luxatio anterior/subcoracoidea: Anterior luxation is the most common form. The head is located in front of the shoulder joint under a bony projection of the shoulder blade (proc. coracoidus).
- Luxatio inferior/axillaris: Here the head is below the joint socket and is displaced in the direction of the armpit.
- Dislocation posterior/infraspinata: In this case, the dislocated shoulder causes the joint head to stand behind the socket, displaced in the direction of the back.