Fig. 2From: Mid-term outcomes of arthroscopic-assisted Core decompression of Precollapse osteonecrosis of femoral head—minimum of 5 year follow-upa Fluoroscopy AP of left hip demonstrating the positioning of the guide wire in the femoral head directed towards the necrotic area, while monitoring the femoral head cartilage by arthroscope to avoid articular cartilage penetration. b Fluoroscopy Lateral of left hip showing the positioning of the guide wireBack to article page