Mid-term Outcomes of Microfracture for the Treatment of Focal, Full-thickness Cartilage Defects Isolated to the Humeral Head Gallery Mid-term Outcomes of Microfracture for the Treatment of Focal, Full-thickness Cartilage Defects Isolated to the Humeral Head Cartilage Microfrature Joint Preservation Surgery, Shoulder Studies Mid-term Outcomes of Microfracture for the Treatment of Focal, Full-thickness Cartilage Defects Isolated to the Humeral HeadCategories: Cartilage Microfrature Joint Preservation Surgery, Shoulder Studies|Tags: Cartilage microfracture, Humeral Head Chondral Defect|