Table 5: Arthroscopic staging system for osteochondral lesions of the talus.
| Grade |
Definition |
| A |
Smooth, intact, but soft cartilage |
| B |
Rough cartilage |
| C |
Fibrillations or fissures |
| D |
Flap present or bone exposed |
| E |
Loose, nondisplaced fragment |
| F |
Displaced fragment |
Cheng/Ferkel Arthroscopic staging system of OLT Cheng MS, Ferkel RD, Applegate GR. Osteochondral lesions of the talus: a radiologic and surgical comparison. Abstract presented at the Annual Meeting of the American Academy of Orthopedic Surgeons New Orleans. 1995.