Lateral clavicle fractures are classified according to Jäger and Breitner (1984)as follows:
| Type | Fracture | Ligamentous injury |
| Type 1 | Fracture lateral (away from the midline of the body) of the coracoclavicular ligament (connecting the clavicle to the processus coracoideus of the scapula) | Occasional acromioclavicular ligament (ligament that reinforces the acromioclavicular joint. It extends from the acromion of the scapula to the clavicle). |
| Type 2a | Fracture at the base of the coracoclavicular ligament | Rupture (tearing) of the pars conoidea of the coracoclavicular ligament |
| Type 2b | Fracture at the base of the coracoclavicular ligament | Rupture of the pars trapezoidea of the coracoclavicular ligament |
| Type 3 | Fracture medial (oriented toward the center of the body) of the coracoclavicular ligament | None |
| type 4 | Fracture medial to the acromioclavicular joint (joint connection between the clavicle (collarbone) and the acromion of the scapula (shoulder blade)) | None |
