Fig. 4From: The proper correction of the mechanical axis in high tibial osteotomy with concomitant cartilage procedures—a retrospective comparative studyThis case was a 59-year-old female suffering from medial osteoarthritis with right knee pain. a Large cartilage defect on medial femoral condyle through preoperative MRI. b 3.0-cm2-sized cartilage defect was confirmed by diagnostic arthroscopy. c Concomitant ACI was performed. d The mechanical axis could be corrected from 10° varus preoperatively to neutral alignment at the final follow-up. e The cartilaginous regeneration (ICRS score, 10 points) could be confirmed at the second-look diagnostic arthroscopyBack to article page