Table 1.
Rockwood classification of the acromioclavicular joint dislocations
| 1st Degree | Extension of the acromioclavicular ligaments | -clear acromioclavicular articulation | Orthopedic treatment |
| -clear coracoclavicular ligaments | |||
| -clear trapeze and deltoid muscles | |||
| 2nd Degree | Break of the acromioclavicular ligaments | -increase the space in acromioclavicular joint | Orthopedic treatment/surgery |
| - extended coracoclavicular ligaments | |||
| -clear trapeze and deltoid muscles | |||
| 3rd Degree | Break of the acromioclavicular and coracoclavicular ligaments | - acromioclavicular joint dislocations | Orthopedic treatment |
| - increase of the acromioclavicular space with 25-100% | |||
| - muscles trapeze and deltoid detached of the distal part of clavicle | |||
| 4th Degree | Break of the acromioclavicular and coracoclavicular ligaments | - coracoclavicular space increased/normal | Surgery treatment |
| Acromioclavicular joint dislocations with posterior movement of the clavicle | - trapeze and deltoid muscles detached | ||
| 5th Degree | Break of the acromioclavicular and coracoclavicular ligaments | - increase of the acromioclavicular space with 100-300% | Surgery treatment |
| Acromioclavicular joint dislocations | - trapeze and deltoid muscles detached | ||
| 6th Degree | Break of the acromioclavicular ligaments | Subcoracoidal type | Surgery treatment |
| - distal clavicle is dislocated inferior to coracoids process | |||
| - coracobrachialis ligaments are disrupted | |||
| Subacromial type | |||
| - clavicle inferior to acromion | |||
| - coracoclavicular space is smaller | |||
| - coracoclavicular ligaments are disrupted |