Fig 1.

Arthroscopy in a left shoulder with the patient in the beach-chair position. The index arm is fixed within an adjustable arm holder, and anatomic bony landmarks are drawn onto the shoulder (A). Setting up a lateral and anterior-inferior portal with adding transparent cannulas into the anterior-inferior and posterior portal and switching the camera into the lateral portal should give a good view on the chondral defect (B). During the whole procedure, a dry arthroscopy can be performed. However, starting off wet and switching to a dry procedure just before the chondral chips are about to be implanted represents a second option (AI, anterior-inferior portal; L, lateral portal; P, posterior portal; HH, humerus head; white arrow, chondral defect.)