Table 2.
Summarized Atzei’s classification of TFCC peripheral tear (from Douglass, Nathan & Yao, Jeffrey. (2016). Biomechanics and Classification (Diagnosis and Imaging for TFCC Injuries, Instability).
| Class | 0 | 1 | 2 | 3 | 3a | 4 | 5 |
|---|---|---|---|---|---|---|---|
| Description | Ulnar styloid tip fracture | Distal TFCC tear | Distal & Proximal tear | Proximal TFCC tear | Ulnar Styloid base fracture | Irreparable proximal TFCC tear | Advanced DRUJ arthritis |
| Clinical DRUJ instability | Stable | Stable | Mild to severe instability | Variable | |||
| Distal TFCC | Intact | Torn | Torn | Normal | Normal | Irreparable tear | Variable |
| Proximal TFCC | Intact | Intact | Torn | Torn | Intact | Irreparable tear | Variable |
| Hook Test | Negative (taut) | Positive (Abnormal Laxity) | Variable | ||||
| Treatment | Immobilisation | TFCC suture repair | Fixation of proximal TFCC to fovea | Ulnar Styloid fixation | TFCC reconstruction | Salvage | |