Ameliorating joint conditions including injuries and diseases

A method of promoting healing in or adjacent to a portion of a bone layer at a treatment site within a body joint, the method comprising:

• providing an implantable device having a body formed of non-resorbable material, the implantable device comprising:
• an axis defining an axial direction of the device;
• a first section comprising:
• a joint-ward end having an inner surface and an outer surface spaced apart from one another along the axial direction of the device, the outer surface defining a convex or a concave profile, the joint-ward end further having first fenestrations extending fully through the joint-ward end in a manner that includes extending between and through the inner surface of the joint-ward end and the convex or concave profile of the outer surface of the joint-ward end;
• and
• a second section arranged along the axial direction from the first section and comprising:
• an opposing leading end;
• and
• a lateral wall extending between the joint-ward end and the leading end, wherein the lateral wall comprises threads configured to engage the bone layer at the treatment site;
• penetrating the leading end into the bone layer to a depth;
• positioning the second section in the bone layer;
• and
• positioning the joint-ward end in a position to facilitate transmission through the first fenestrations into a cartilage zone by positioning the joint-ward end at a transition area substantially between a cartilage layer in the cartilage zone and the bone layer at the treatment site such that the joint-ward end is beneath the cartilage zone or otherwise not extending entirely through the cartilage zone.