Prostheses with flexible surface lamellas

An implant for use in joint or bone repair comprising a stem having a proximal end, a distal end, and an external surface, in which a portion of the stem comprises two or more non-overlapping lamellas around part or all of the circumference of the stem;

• wherein:
• each lamella comprises an outer surface, an inner surface, and a thickness therebetween, wherein the inner surface of the lamella faces the external surface of the stem,
• each lamella is connected to the external surface of the stem via a bending joint on the inner surface of the lamella, wherein each of the lamellas comprises a proximal edge, a distal edge, a left edge, and a right edge, wherein the proximal edge is the edge nearest the proximal end, and the distal edge is the edge nearest the distal end, wherein the bending joint is on either the right edge of the lamella between the proximal edge and the distal edge, or on the left edge of the lamella between the proximal edge and the distal edge, and wherein the rest of the inner surface of the lamella and the external surface of the stem is separated by a space;
• the bending joint permits the space between the rest of the inner surface of the lamella and the external surface of the stem to decrease upon application of a force to the outer surface of the lamella,
• wherein the lamellas are arranged in two or more columns of lamellas in a direction of the proximal end to the distal end of the stem, and two or more rows of lamellas around the circumference of the stem, and
• when implanted in a body, the space between the inner surface of the lamella and the external surface of the stem can decrease but cannot increase.