Figs. 7-A and 7-B Removal of sclerotic bone/intralesional osteophytes. (Reproduced, with permission of Elsevier, from: Minas T. A primer in cartilage repair and joint preservation of the knee. Expert consult. Philadelphia: Elsevier Saunders; 2011.).

Fig. 7-A.

Intralesional osteophytes may form after use of a marrow stimulation procedure (abrasion, drilling, or microfracture) as well as from idiopathic osteoarthritis.

Fig. 7-B.

A 5-mm high-speed burr is used gently, under irrigation, to remove sclerotic cortical-type bone to the level of the adjacent native subchondral bone.