1. The “Cup-Shaped” Technique for Uncontained Osteochondral Lesion of the Talus 
Ichiro Yoshimura, M.D., Ph.D., Tomonobu Hagio, M.D., Masatoshi Naito, M.D., Ph.D. 
Arthroscopy Techniques 
Volume 2, Issue 4, Pages e347-e350 (November 2013)
DOI: /j.eats
Copyright © 2013 Arthroscopy Association of North America Terms and Conditions

2. Fig 1
Preoperative magnetic resonance image (coronal image) showing an uncontained medial OLT. The uncontained lesion does not have a peripheral cartilage border on one side, with loss of the medial articular buttress.
Arthroscopy Techniques 2013 2, e347-e350DOI: ( /j.eats )
Copyright © 2013 Arthroscopy Association of North America Terms and Conditions

3. Fig 2
Uncontained posteromedial OLT (with arthroscope in anterolateral portal). (A) The fragment is removed, the (B) fibrous tissue is curetted at the base of the lesion, (C) the bottom of the lesion is abraded, and (D) microfracture holes are sited. (E) After creation of the cup shape by arthroscopy (in the anteromedial portal), the base of the lesion is surrounded by the edge of the lesion.
Arthroscopy Techniques 2013 2, e347-e350DOI: ( /j.eats )
Copyright © 2013 Arthroscopy Association of North America Terms and Conditions

4. Fig 3
The subchondral bone of the lesion is denuded with an abrader burr and an open/closed curette to create a cup shape.
Arthroscopy Techniques 2013 2, e347-e350DOI: ( /j.eats )
Copyright © 2013 Arthroscopy Association of North America Terms and Conditions

5. Fig 4
Postoperative magnetic resonance image (coronal image) showing that the osteochondral lesion is completely filled with repair tissue 12 months after surgery. The intensity of the lesion is similar to that of the cartilage. The subchondral bone of the lesion is cup shaped.
Arthroscopy Techniques 2013 2, e347-e350DOI: ( /j.eats )
Copyright © 2013 Arthroscopy Association of North America Terms and Conditions