Human ECM Implanted Within Microfracture Interstices & the Cartilage Defect in the Knee to Regenerate Hyaline Cartilage

This is an Intervention Model where all patients who are identified/confirmed candidates for microfracture surgery will be enrolled to receive the microfracture surgery (standard of care). Ten (10) patients will be randomized to receive the study intervention (HST003). HST003 will be injected into the microfracture defects (interstices) and fill the remainder of the defect to the cartilage margin following surgery. The primary purpose of the study is to compare the two groups: microfracture surgery + HST003 as compared to the microfracture surgery only group.