Method of reconstructing cartilage of distal femur

A method of reconstructing cartilage of a distal femur in which damaged cartilage of the distal femur is reconstructed to a pre-damaged state thereof for designing a patient-specific artificial knee joint, the method comprising:

• (a) generating a distal femur model (A) having only a bone without cartilage from image data of a femur captured by a medical imaging device;
• (b) generating a distal femur model (B) having damaged cartilage from the image data;
• (c) extracting a bone cross section for each region in each of the model (A) and the model (B);
• (d) obtaining a distance (d) between an articular surface of the model (A) and a cartilage surface of the model (B) at each predetermined point by using a bone cross section of the model (A) and a bone cross section of the model (B) which are extracted from the same region;
• and
• (e) generating a distal femur model (C) with cartilage reconstructed according to a reconstruction line (L1) offset by a thickness of the cartilage from the articular surface of the model (A) after presetting a specific value of the distance (d) obtained in the obtaining (d) as the thickness of the cartilage to be reconstructed.