Rockwood classification
Trauma and orthopaedics
Also known as: Rockwood-Klassifikation (AC-Gelenkverletzung, Schultereckgelenk) · Rockwood sınıflaması (akromiyoklaviküler eklem yaralanması) · Rockwood classification (acromioclavicular joint injuries)
What it is for
Six types of acromioclavicular (AC) joint injury by injury to the AC and coracoclavicular (CC) ligaments, the deltotrapezial fascia, and the direction and degree of clavicular displacement.
Classification
| Category | Description |
|---|---|
| Type I | AC ligament sprain; AC joint and CC ligaments intact; normal radiograph. |
| Type II | AC ligaments torn, CC ligaments sprained but intact; AC joint widened, slight vertical subluxation. |
| Type III | AC and CC ligaments torn; clavicle displaced upward relative to the acromion, CC distance increased up to 100% (up to about twice the other side). |
| Type IV | AC and CC ligaments torn; clavicle displaced posteriorly into or through the trapezius. |
| Type V | AC and CC ligaments torn; marked upward displacement with the deltoid and trapezius detached from the distal clavicle, CC distance increased 100–300%. |
| Type VI | clavicle displaced inferiorly below the acromion or the coracoid process (rare). |
Source
Fractures and dislocations of the shoulder (chapter)
In: Rockwood CA Jr, Green DP, eds. Fractures in Adults. Lippincott, Philadelphia 1984:860–910 (Rockwood CA Jr)
- Edition
- Rockwood 1984 (types I–VI), expanding Tossy 1963
- Checked on
Summary of the published classification in our own words. Not a substitute for the original publication.
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