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. 2015 Sep 15;99(1):1–20. doi: 10.5334/jbr-btr.846

Figure 21.

Figure 21

Axial FS T2-WI. The Palmer classification for traumatic lesions (type I): A: central perforation, B: ulnar avulsion with or without distal ulnar fracture, C: distal avulsion from the carpus, D: radial avulsion with or without sigmoid notch fracture. R: Radius, U: Ulna.