Osteotomies around the knee are surgical treatment techniques which are applied to patient who have varus or valgus deformity with single compartment osteoarthropathy. Osteotomies may be applied for proximal tibia, distal femur or both sites. It is very important to make a detailed pre-operative planning for patient who will receive total knee arthroplasty after an osteotomy around knee joint. Incision choice must be done while taking previous incisions to account. Surgeon must be precautious about especially proximal tibia closed wedge osteotomy caused patellar tendon fibrosis and patella baja related issues which may develop while overturning or shifting patella to lateral side. In addition to this implants must be removed from osteotomy site if they would prevent to apply arthroplasty materials. Bone cuttings must be done with the consideration of osteotomy related anatomical changes while surgery. Surgeon must be precautious about the instability especially for the patient who have serious coronal and sagittal plane deformities and because of this stabilizing prosthesis options must be ready while surgery. Total knee arthroplasty that would be performed with correct surgical technique after sufficient preoperative planning is satisfactory in terms of clinical and radiological results.